LOGIMETRICS INC
SC 13D/A, 1998-11-05
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*

                                LOGIMETRICS, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   54141 01 06
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

   Michael Marrone, c/o Cramer Rosenthal McGlynn, LLC, 707 Westchester Avenue,
                   White Plains, New York 10604 (212) 415-0474
- --------------------------------------------------------------------------------
   (Name, Address and Telephone Number of Person Authorized to Receive Notices
                               and Communications)

                                October 21, 1998
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

      If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1 (b)(3) or (4), check the following box |_|.

      Note: Six copies of this statement, including all exhibits, should be
filed with the Commission. See Rule 13d-1(a) for other parties to whom copies
are to be sent.

      *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

      The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 (the "Act") or otherwise subject to the liabilities of that section
of the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Gerald B. Cramer
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      PF
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      United States
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             3,242,098 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        3,242,098 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      3,242,098 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      10.29%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 2 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Fred M. Filoon
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      PF
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      United States
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             324,206 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        324,206 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      324,206 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      1.13%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 3 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Eugene A. Trainor, III
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      PF
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      United States
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             162,112 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        162,112 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      162,112 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      .57%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 4 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Richard S. Fuld, Jr.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      PF
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      United States
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             486,314 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        486,314 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      486,314 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      1.7%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 5 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Cramer Rosenthal McGlynn, LLC
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware     
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares               429,924 Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             18,737,033 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power

                        429,924 Shares
                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        18,737,033 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      19,166,955 Shares*
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      41.27%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      OO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     Cramer Rosenthal McGlynn, LLC has sole power to vote and dispose of all
      429,924 shares directly held by it, and shares voting and dispositive
      power with each other Reporting Person over all shares beneficially owned
      by each such Reporting Person by virtue of its position as investment
      advisor of each of the other Reporting Persons.


                                 Page 6 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      McGlynn Family Partnership
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      New York
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares               
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             324,206 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        324,206 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      324,206 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      1.13%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 7 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      Edward J. Rosenthal Keogh
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      New York
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             324,206 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        324,206 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      324,206 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      1.13%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      OO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 8 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      L.A.D. Equity Partners, L.P.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      New York
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             693,299 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        693,299 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      693,299 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      2.44%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 9 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM 1997 Enterprises Fund, LLC
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      New York
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             2,102,237 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        2,102,237 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      2,102,237 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      6.88%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      OO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 10 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM Partners, L.P.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware     
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             1,771,532 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        1,771,532 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      1,771,532 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      5.86%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 11 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM Retirement Partners, L.P.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             984,182 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        984,182 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      984,182 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      3.34%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 12 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM Madison Partners, L.P.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             984,182 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        984,182 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      984,182 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      3.34%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 13 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM U.S. Value fund, Ltd.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Bermuda
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             336,152 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        336,152 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      336,152 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      1.17%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      CO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 14 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM 1998 Enterprise Fund, LLC
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      New York
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             2,722,897 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        2,722,897 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      2,722,897 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      8.9%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 15 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      A.C. Israel Enterprises, Inc.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             3,242,098 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        3,242,098 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      3,242,098 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      10.29%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      CO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 16 of 149
<PAGE>

CUSIP No. 54141 01 06
- --------------------------------------------------------------------------------
1     Name of Reporting Person
      S.S. or I.R.S. Identification No. of Above Person

      CRM-EFO Partners, L.P.
- --------------------------------------------------------------------------------
2     Check the Appropriate Box If a Member of a Group*
                                                                         a.  |_|
                                                                         b.  |X|
- --------------------------------------------------------------------------------
3     SEC Use Only

- --------------------------------------------------------------------------------
4     Source of Funds*

      WC
- --------------------------------------------------------------------------------
5     Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items
      2(d) or 2(e)                                                           |_|

- --------------------------------------------------------------------------------
6     Citizenship or Place of Organization

      Delaware
- --------------------------------------------------------------------------------
                  7     Sole Voting Power
  Number of
   Shares
Beneficially      --------------------------------------------------------------
  Owned By        8     Shared Voting Power
    Each
  Reporting             810,523 Shares*
   Person         --------------------------------------------------------------
    With          9     Sole Dispositive Power


                  --------------------------------------------------------------
                  10    Shared Dispositive Power

                        810,523 Shares*
- --------------------------------------------------------------------------------
11    Aggregate Amount Beneficially Owned by Each Reporting Person

      810,523 Shares
- --------------------------------------------------------------------------------
12    Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares* |_|


- --------------------------------------------------------------------------------
13    Percent of Class Represented By Amount in Row (11)

      2.77%
- --------------------------------------------------------------------------------
14    Type of Reporting Person*

      PN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


- ----------

*     The Reporting Person shares voting and dispositive power over all such
      shares with Cramer Rosenthal McGlynn, LLC, its investment advisor with
      respect to such shares.


                                 Page 17 of 149
<PAGE>

      This Amendment No. 1 is being filed pursuant to Rule 13-d-(2) promulgated
under the Securities Exchange Act of 1934 (the "Exchange Act") and amends the
Schedule 13D previously filed as of November 20, 1997 (the "Schedule 13D"). At
the time that the Schedule 13D was filed, CRM Eurycleia Partner, L.P.
("Eurycleia") was included as a Reporting Person. However, Eurycleia was
dissolved in 1998, and all shares of Common Stock beneficially owned by
Eurycleia were distributed to its General Partner as well as to certain of the
Reporting Persons. Terms not otherwise defined herein shall have the meaning
ascribed to them in the Schedule 13D.

Item 1.     Security and Issuer

            Item 1 is hereby amended and restated to read as follows:

            This statement is being filed to report the transactions by each of
            Gerald B. Cramer, Fred M. Filoon, Eugene A. Trainor III, Richard S.
            Fuld, Jr., Cramer Rosenthal McGlynn, LLC, McGlynn Family
            Partnership, Edward J. Rosenthal KEOGH, L.A.D. Equity Partners,
            L.P., CRM 1997 Enterprise Fund, LLC, CRM Partners, L.P., CRM
            Retirement Partners, L.P., CRM Madison Partners, L.P., CRM U.S.
            Value Fund, Ltd., CRM 1998 Enterprise Fund, LLC, A.C. Israel
            Enterprises, Inc. and CRM-EFO Partners, L.P. (collectively, the
            "Reporting Persons") in shares of Common Stock, par value of $.01
            per share of the Company (the "Common Stock") as well as in the
            following securities of the Company that are convertible into or
            exercisable to purchase Common Stock: Class A 13% Convertible Senior
            Subordinated Pay-In-Kind Debentures Due 1999 (the "Debentures"),
            which Debentures are convertible into shares of Common Stock at a
            conversion price of $.41667 per share; Class C 13% Convertible
            Senior Subordinated Debentures Due 1999 (the "Class C Debentures");
            Series G Warrants (the "G Warrants"), which G Warrants are
            exercisable for a period of seven (7) years to purchase shares of
            Common Stock at an exercise price of $.50 per share; Series H
            Warrants (the "H Warrants"), which H Warrants are exercisable for a
            period of seven (7) years to purchase shares of Common Stock at an
            exercise price of $.60 per share; and Series I Warrants (the "I
            Warrants"), which I Warrants are exercisable for a period of seven
            (7) years to purchase shares of Common Stock at an exercise price of
            $1.125 per share.

            On July 29, 1997, certain investors, including the Reporting
            Persons, entered into a Purchase Agreement (the "Initial Purchase
            Agreement") relating to a proposed financing (the "Financing") of
            the Company, consisting of up to $3,583,333 principal amount of
            Debentures, up to 9,350,000 G Warrants at a purchase price of $.07
            per G Warrant, up to 1,433,333 H Warrants at a purchase price of
            $.06 per H Warrant and up to 716,667 I Warrants at a purchase price
            of $.04 per I Warrant, for aggregate gross proceeds to the Company
            of up to $4,352,500. On July 30, 1997, certain of the foregoing
            investors, including certain of the Reporting Persons, consummated
            the first closing of the initial purchase (the "Initial Purchase")
            of such Financing, consisting of an aggregate of $2,535,942
            principal amount of Debentures, 6,866,129 G Warrants, 1,074,114 H
            Warrants and 537,057 I Warrants. One of the investors, not among the
            Reporting Persons, had the right, in a second closing of the Initial
            Purchase, to purchase $214,058 principal amount of Debentures,
            483,871 G Warrants, 25,886 H Warrants and 12,943 I Warrants. 


                                 Page 18 of 149
<PAGE>

            In May and August of 1998, certain investors, including certain of
            the Reporting Persons, exercised an option to purchase (the
            "Optional Purchase"), in the aggregate, $833,333 principal amount of
            Debentures, 2,000,000 G Warrants, 333,333 H Warrants and 166,667 I
            Warrants.

            On October 21, 1998, certain investors, including certain of the
            Reporting Persons, entered into a Purchase Agreement (the "Second
            Purchase Agreement") with the Company, for the purchase (the "Class
            C Purchase") by such investors of $2,666,667 in aggregate principal
            amount of Class C Debentures for aggregate gross proceeds to the
            Company of $2,000,000.

            In addition, on October 21, 1998, certain investors, including
            certain of the Reporting Persons, entered into a Stock Purchase
            Agreement (the "Stock Purchase Agreement") with an individual
            stockholder of the Company, for the purchase (the "Common Purchase";
            and together with the Class C Purchase, the "Second Financing") by
            such investors of 2,000,000 shares of Common Stock for an aggregate
            purchase price of $500,000.

            The principal executive offices of the Company are located at 50
            Orville Drive, Bohemia, New York 11716.

Item 2.     Identity and Background

            Item 2 is hereby amended and restated to read as follows:

            (a) This Statement is being filed by Gerald B. Cramer, an
            individual, Fred M. Filoon, an individual, Eugene A. Trainor, III,
            an individual, Richard S. Fuld, Jr., an individual, Cramer Rosenthal
            McGlynn, LLC, a Delaware limited liability company ("Cramer
            Rosenthal"), McGlynn Family Partnership, a New York limited
            partnership ("McGlynn Family"), Edward J. Rosenthal KEOGH, a
            retirement plan ("Rosenthal KEOGH"), L.A.D. Equity Partners, L.P., a
            Delaware limited partnership ("L.A.D Equity"), CRM 1997 Enterprise
            Fund, LLC, a New York limited liability company ("CRM 1997"), CRM
            Partners, L.P., a Delaware limited partnership ("CRM Partners"), CRM
            Retirement Partners, L.P., a Delaware limited partnership ("CRM
            Retirement"), CRM Madison Partners, L.P., a Delaware limited
            partnership ("CRM Madison"), CRM U.S. Value Fund Ltd., a Bermuda
            corporation ("CRM U.S. Value"), CRM 1998 Enterprise Fund, LLC ("CRM
            1998"), a New York limited liability company, A. C. Israel
            Enterprises, Inc., a Delaware corporation ("A.C. Israel"), and
            CRM-EFO Partners, L.P., a Delaware limited partnership ("CRM-EFO").
            Mr. Cramer, Mr. Filoon, Mr. Trainor, Mr. Fuld, Cramer Rosenthal,
            McGlynn Family, Rosenthal KEOGH, L.A.D. Equity, CRM 1997, CRM 1998,
            CRM Partners, CRM Retirement, CRM Madison, CRM U.S. Value, A.C.
            Israel and CRM-EFO are making this single, joint filing because they
            may be deemed to constitute a "group" within the meaning of Section
            13(d) (3) of the Exchange Act. The Reporting Persons disclaim the
            existence of a group with the other investors in the Financing or
            the Second Financing.


                                 Page 19 of 149
<PAGE>

            (b) - (c)

            Gerald B. Cramer

            Mr. Cramer is principally employed as the Chairman of Cramer
            Rosenthal McGlynn, LLC, a firm that provides investment management
            services, and as the Chairman of the Board of Cramer Rosenthal
            McGlynn, Inc., which is the general partner of CRM Partners, CRM
            Retirement and CRM Madison, and the investment advisor of CRM-EFO
            Investments, LLC, the general partner of CRM-EFO and CRM U. S.
            Value. The principal business address of Mr. Cramer is 707
            Westchester Avenue, White Plains, New York 10604.

            Fred M. Filoon

            Mr. Filoon is principally employed as a Senior Vice President of
            Cramer Rosenthal McGlynn, LLC, a firm that provides investment
            management services, and as Senior Vice President of Cramer
            Rosenthal McGlynn, Inc., which is the general partner of CRM
            Partners, CRM Retirement and CRM Madison, and the Managing Member of
            CRM-EFO Investments, LLC, the general partner of CRM-EFO and CRM U.
            S. Value. The principal business address of Mr. Filoon is 707
            Westchester, New York, New York 10604.

            Eugene A. Trainor, III

            Mr. Trainor is principally employed as the Chief Financial Officer
            of Cramer Rosenthal McGlynn, LLC, a firm that provides investment
            management services, and as Senior Vice President of Cramer
            Rosenthal McGlynn, Inc., which is the general partner of CRM
            Partners, CRM Retirement and CRM Madison, and the Managing Member of
            CRM-EFO Investments, LLC, the general partner of CRM-EFO, and CRM U.
            S. Value. The principal business address of Mr. Trainor is 707
            Westchester, New York 10604.

            Richard S. Fuld, Jr.

            Mr. Fuld is a client of Cramer Rosenthal McGlynn, LLC. The principal
            business address of Mr. Fuld is c/o Lehman Brothers, 3 World Trade
            Center, New York, NY 10285.

            Cramer Rosenthal McGlynn, LLC

            Cramer Rosenthal McGlynn, LLC is a corporation that provides
            investment management services, and is the Managing Member of CRM
            1997 and CRM 1998. The principal business address of Cramer
            Rosenthal McGlynn is 707 Westchester Avenue, White Plains, New York
            10604.


                                 Page 20 of 149
<PAGE>

            McGlynn Family Partnership

            McGlynn Family is a limited partnership that consists of investments
            of the family of Ronald H. McGlynn, the president and CEO of Cramer
            Rosenthal McGlynn. The principal business address of McGlynn Family
            is 520 Madison Avenue, New York, NY 10022.

            Edward J. Rosenthal KEOGH

            Rosenthal KEOGH is a retirement plan for Mr. Edward J. Rosenthal,
            Vice Chairman of Cramer Rosenthal McGlynn, LLC. The principal
            business address of Rosenthal KEOGH is 707 Westchester Avenue, White
            Plains, New York 10604.

            L.A.D. Equity Partners, L.P.

            L.A.D. Equity is a limited partnership that consists of investments
            for the Pergament family. Flint Investments, Inc. is the general
            partner, of which Arthur J. Pergament, Senior Vice President and
            Shareholder of CRM is Vice President and Secretary, and Robert M.
            Pergament, a client of CRM is President and Treasurer. The principal
            business address of L.A.D. Equity is 520 Madison Avenue, New York,
            New York 10022.

            CRM 1997 Enterprise Fund, LLC

            CRM 1997 is a limited liability company that provides investments in
            shares of small to medium sized, often value oriented companies with
            potential for long-term capital appreciation, through investment
            funds (venture capital and leveraged buyout funds). Cramer Rosenthal
            is the Managing Member of which Mr. Cramer is Chairman, Mr. Filoon
            is Senior Vice President and Mr. Trainor is Senior Vice President.
            The principal business address of CRM 1997 Enterprises is 707
            Westchester Avenue, White Plains, New York 10604.

            CRM 1998 Enterprise Fund, LLC

            CRM 1998 is a limited liability company that provides investments in
            shares of small to medium sized, often value oriented companies with
            potential for long-term capital appreciation, through investment
            funds (venture capital and leveraged buyout funds). Cramer Rosenthal
            is the Managing Member of which Mr. Cramer is Chairman, Mr. Filoon
            is Senior Vice President and Mr. Trainor is Senior Vice President.
            The principal business address of CRM 1998 Enterprises is 707
            Westchester Avenue, White Plains, New York 10604.

            CRM Partners, L.P.

            CRM Partners is a limited partnership that invests in common and
            preferred stocks, bonds, options and other money market instruments,
            utilizing hedging techniques including short selling in an effort to
            reduce market volatility. CRM, Inc. is the general partner of which
            Mr. Cramer is Chairman, Mr. Filoon is Senior 


                                 Page 21 of 149
<PAGE>

            Vice President, and Mr. Trainor is Senior Vice President. The
            principal business address of CRM Partners, L.P. is 707 Westchester
            Avenue, White Plains, New York 10604.

            CRM Retirement Partners. L.P.

            CRM Retirement is a limited partnership that invests in common and
            preferred stocks, bonds, options and other money market instruments,
            utilizing hedging techniques including short selling in an effort to
            reduce market volatility. CRM, Inc. is the general partner of which
            Mr. Cramer is Chairman, Mr. Filoon is Senior Vice President, and Mr.
            Trainor is Senior Vice President. The principal business address of
            CRM Retirement, L.P. is 707 Westchester Avenue, White Plains, New
            York 10604.

            CRM Madison Partners, L.P.

            CRM Madison is a limited partnership that invests in common and
            preferred stocks, bonds, options and other money market instruments,
            utilizing hedging techniques including short selling in an effort to
            reduce market volatility. CRM Management, Inc. is the general
            partner of which Mr. Cramer is Chairman, Mr. Filoon is Senior Vice
            President, and Mr. Trainor is Senior Vice President. The principal
            business address of CRM Madison, L.P. is 707 Westchester Avenue,
            White Plains, New York 10604.

            CRM U.S. Value Fund Ltd.

            CRM U.S. Value is a Bermuda corporation whose objective is long-term
            capital appreciation through investments primarily in equity and
            equity-related securities of U. S. companies with middle market
            capitalizations. The principal business address of CRM Value Fund is
            6 Front Street, Hamilton, HM 11, Bermuda.

            A.C. Israel Enterprises, Inc.

            A.C. Israel Enterprises, Inc. is a limited partnership that handles
            the investments of the Israel family, clients of Cramer Rosenthal
            McGlynn. The principal business address of A.C. Israel Enterprises,
            Inc. is 707 Westchester Avenue, White Plains, New York 10604.

            CRM-EFO Partners

            CRM -EFO Partners is a limited partnership whose objective is
            long-term capital appreciation through investments primarily in
            equity and equity-related securities of U. S. companies with middle
            market capitalizations. CRM-EFO LLC, a Delaware limited liability
            company is the general partner of the partnership. CRM, Inc. is the
            Managing Member of the general partner, of which Mr. Cramer is
            Chairman, Mr. Filoon is Senior Vice President, and Mr. Trainor is
            Senior Vice President. The principal business address of CRM-EFO is
            707 Westchester Avenue, White Plains, New York 10604.


                                 Page 22 of 149
<PAGE>

            (d) To the best knowledge of the Reporting Persons, during the last
            five years, none of the Reporting Persons has been convicted in a
            criminal proceeding (excluding traffic violations or similar
            misdemeanors).

            (e) To the best knowledge of the Reporting Persons, during the last
            five years, none of the Reporting Persons has been a party to a
            civil proceeding of a judicial or administrative body of competent
            jurisdiction and is subject to any judgment, decree or final order
            enjoining future violations of, or prohibiting or mandating
            activities subject to, federal or state securities laws or a finding
            of any violation with respect to such laws.

            (f) Each of the individual Reporting Persons is a citizen of the
            United States of America. Cramer Rosenthal is a Delaware limited
            liability company. McGlynn Family is a New York limited partnership.
            Rosenthal KEOGH is a retirement plan. L.A.D. Equity is a New York
            limited partnership. CRM 1997 is a New York limited liability
            company. CRM 1998 is a NewYork limited liability company. CRM
            Partners is a New York limited partnership. CRM Retirement is a
            Delaware limited partnership. CRM Madison is a Delaware limited
            partnership. CRM U.S. Value is a Bermuda corporation. A.C. Israel is
            a Delaware corporation. CRM-EFO is a Delaware limited partnership.

Item 3.     Source and Amount of Funds or Other Consideration.

            Item 3 is hereby amended and restated to read as follows:

            The source of the $736,569 paid by Mr. Cramer, the $73,656 paid by
            Mr. Filoon, the $36,830 paid by Mr. Trainor and the $110,486 paid by
            Mr. Fuld for the Common Stock, Debentures, Class C Debentures, G
            Warrants, H Warrants and I Warrants purchased by such individuals,
            as set forth in Item 5 below, was personal funds of such
            individuals.

            The source of the $80,781 paid by Cramer Rosenthal, the $73,656 paid
            by McGlynn Family, the $73,656 paid by Rosenthal KEOGH, the $163,775
            paid by L.A.D. Equity, the $476,379 paid by CRM 1997, the $391,760
            paid by CRM Partners, the $218,645 paid by CRM Retirement, the
            $218,645 paid by CRM Madison, the $75,000 paid by CRM U.S. Value,
            the $736,569 paid by A.C. Israel and the $184,142 paid by CRM-EFO
            for the Common Stock, Debentures, the Class C Debentures, G
            Warrants, H Warrants and I Warrants purchased by such entities, as
            set forth in Item 5 below, was working capital of such entities.

Item 4.     Purpose of Transaction.

            Item 4 is hereby amended and restated to read as follows:

            The Reporting Persons acquired the Common Stock, Debentures, Class C
            Debentures, G Warrants, H Warrants and I Warrants of the Company
            reported herein as being owned by each of them for investment
            purposes. Depending upon market conditions and other factors that
            each of the Reporting Persons may deem material to their respective
            investment decisions, the Reporting Persons may 


                                 Page 23 of 149
<PAGE>

            purchase shares of Common Stock of the Company in the open market or
            in private transactions, or may dispose of all or a portion of the
            Common Stock, Debentures, Class C Debentures, G Warrants, H Warrants
            and/or I Warrants or other securities of the Company that each now
            owns or hereafter may acquire, subject to restrictions on transfer
            under the securities laws and under the documents pursuant to which
            such securities were purchased.

            Each of the Reporting Persons has entered into a stockholders'
            agreement, the "Stockholders' Agreement"; a copy of which is
            attached as Exhibit 2 to the Schedule 13D) with the Company and
            Charles Brand, the Chairman of the Board and Chief Technical Officer
            of the Company and the Company's largest shareholder, in which the
            Reporting Persons agreed, among other things, to certain limitations
            on their ability to dispose of their shares of the Common Stock,
            grant and are granted certain "tag-along" rights with respect to
            future sales of the Common Stock, and agree to vote their shares of
            Common Stock for the appointment of certain nominees as members of
            the Company's Board of Directors and for certain other matters as
            set forth below. The Reporting Persons, except for Phineas Broadband
            Systems, L.P., entered into a separate stockholders' agreement with
            certain investors in the Initial Purchase (the "InterPurchaser
            Agreement") pursuant to which the Reporting Persons granted and were
            granted certain additional "tag-along" rights with respect to future
            sales of Common Stock.

            Among other things, the Stockholders' Agreement provides that a
            majority of the Directors appointed by the Majority Investors can
            recommend to the Board that the Company be sold and Mr. Brand and
            any transferee of his securities have agreed to use their best
            efforts to cause the Brand Directors to vote in favor of the sale
            provided that such recommendation is consistent with their fiduciary
            duties.

            Certain amendments have been made to the by-laws of the Company to
            implement the provisions of the Stockholders' Agreement.

            Except as otherwise set forth above, the Reporting Persons have no
            plans or proposals which relate to, or could result in, any of the
            matters referred to in Paragraphs (b) through (j) of Item 4 of
            Schedule 13D.

Item 5.     Interest in Securities of the Issuer.

            Item 5 is hereby amended and restated to read as follows:

            (a) - (c)

            Set forth below is a description of the number of shares of Common
            Stock and the percentage of the aggregate shares of Common Stock
            issued and outstanding, held by each Reporting Person. All of the
            Class C Debentures reported below were purchased by the respective
            Reporting Persons on October 21, 1998 pursuant to the Second
            Purchase Agreement, at a purchase price equal to 75% of the
            principal amount of Class C Debentures purchased by such Reporting
            Person. All shares of outright Common Stock reported herein as being
            held by Reporting Persons were 


                                 Page 24 of 149
<PAGE>

            acquired on October 21, 1998 pursuant to the Stock Purchase
            Agreement, at a price per share of $0.25.

            Gerald B. Cramer

            Mr. Cramer beneficially owns 3,242,098 shares of Common Stock,
            comprised of 1,027,479 shares issuable upon conversion of $482,117
            principal amount of Debentures and 168,154 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 967,742 shares issuable upon
            exercise of 967,742 G Warrants, 51,772 shares issuable upon exercise
            of 51,772 H Warrants, 25,886, shares issuable upon exercise of
            25,886 I Warrants, 218,372 shares of Common Stock and 782,692 shares
            issuable upon conversion of $242,635 principal amount of Class C
            Debentures currently owned by Mr. Cramer.

            For purposes of this Schedule 13D, such 3,242,098 shares of Common
            Stock comprise 10.29% of the issued and outstanding shares of the
            Common Stock, based on information received from the Company.

            Mr. Cramer shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            Fred M. Filoon

            Mr. Filoon beneficially owns 324,206 shares of Common Stock
            comprised of 102,748 shares issuable upon conversion of $42,812
            principal amount of Debentures and 16,814 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 96,774 shares issuable upon
            exercise of 96,774 G Warrants, 5,177 shares issuable upon exercise
            of 5,177 H Warrants, 2,589 shares issuable upon exercise of 2,589 I
            Warrants, 21,837 shares of Common Stock and 78,267 shares issuable
            upon conversion of $24,263 principal amount of Class C Debentures
            currently owned by Mr. Filoon.

            For purposes of this Schedule 13D, such 324,206 shares of Common
            Stock comprise 1.13% of the issued and outstanding shares of the
            Common Stock based on information provided by the Company.

            Mr. Filoon shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            Eugene A. Trainor III

            Mr. Trainor beneficially owns 162,112 shares of Common Stock
            comprised of 51,374 shares issuable upon conversion of $21,406
            principal amount of Debentures and 8,407shares issuable upon
            conversion of the paid-in-kind interest payments received on such
            Debentures as of October 15, 1998, 48,387 shares issuable upon
            exercise of 48,387 G Warrants, 2,589 shares issuable upon exercise


                                 Page 25 of 149
<PAGE>

            of 2,589 H Warrants, 1,294 shares issuable upon exercise of 1,294 I
            Warrants, 10,920 shares of Common Stock and 39,140 shares issuable
            upon conversion of $12,133 principal amount of Class C Debentures
            currently owned by Mr. Trainor.

            For purposes of this Schedule 13D, such 162,112 shares of Common
            Stock comprise .57% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            Mr. Trainor shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            Richard S. Fuld, Jr.

            Mr. Fuld beneficially owns 486,314 shares of Common Stock comprised
            of 154,120 shares issuable upon conversion of $64,217 principal
            amount of Debentures and 25,222 shares issuable upon conversion of
            the paid-in-kind interest payments accrued on such Debentures as of
            October 15, 1998, 145,161 shares issuable upon exercise of 145,161 G
            Warrants, 7,766 shares issuable upon exercise of 7,766 H Warrants,
            3,883 shares issuable upon exercise of 3,883 I Warrants, 32,756
            shares of Common Stock and 117,406 shares issuable upon conversion
            of $36,396 principal amount of Class C Debentures currently owned by
            Mr. Fuld.

            For purposes of this Schedule 13D, such 486,314 shares of Common
            Stock comprise 1.70% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            Mr. Fuld shares the power to vote and dispose of all such securities
            with Cramer Rosenthal, its investment advisor with respect to such
            shares.

            Cramer Rosenthal McGlynn, LLC

            Cramer Rosenthal beneficially owns 19,166,955 shares of Common Stock
            comprised of (i) 105,311 shares issuable upon conversion of $43,883
            principal amount of Debentures and 17,332 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 299,319 shares issuable upon
            exercise of 299,319 G Warrants, 5,306 shares issuable upon exercise
            of 5,306 H Warrants, and 2,654 shares issuable upon exercise of
            2,654 I Warrants currently owned by Cramer Rosenthal and (ii)
            18,737,033 shares of Common Stock currently held by the other
            Reporting Persons, by virtue of Cramer Rosenthal's position as
            investment advisor to each such Reporting Person with respect to
            such shares.

            For purposes of this Schedule 13D, such 19,166,955 shares of Common
            Stock comprise 41.27% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.


                                 Page 26 of 149
<PAGE>

            Cramer Rosenthal has the sole power to vote and dispose of 429,924
            shares directly held by it and shared power to vote and dispose of
            the 18,737,033 shares held by the other Reporting Persons.

            McGlynn Family Partnership

            McGlynn Family beneficially owns 324,206 shares of Common Stock
            comprised of 102,748 shares issuable upon conversion of $42,452
            principal amount of Debentures and 16,814 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 96,774 shares issuable upon
            exercise of 96,774 G Warrants, 5,177 shares issuable upon exercise
            of 5,177 H Warrants, and 2,589 shares issuable upon exercise of
            2,589 I Warrants, 21,836 shares of Common Stock and 78,267 shares
            issuable upon conversion of $24,263 principal amount of Class C
            Debentures currently owned by McGlynn Family.

            For purposes of this Schedule 13D, such 324,206 shares of Common
            Stock comprise 1.13% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            McGlynn Family shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            Edward J. Rosenthal KEOGH

            Rosenthal KEOGH beneficially owns 324,206 shares of Common Stock
            comprised of 102,748 shares issuable upon conversion of $42,452
            principal amount of Debentures and 16,814 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 96,775 shares issuable upon
            exercise of 96,775 G Warrants, 5,177 shares issuable upon exercise
            of 5,177 H Warrants, 2,589 shares issuable upon exercise of 2,589 I
            Warrants, 21,836 shares of Common Stock and 78,267 shares issuable
            upon conversion of $24,263 principal amount of Class C Debentures
            currently owned by Rosenthal KEOGH.

            For purposes of this Schedule 13D, such 324,206 shares of Common
            Stock comprise 1.13% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            Rosenthal KEOGH shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            L.A.D. Equity Partners, L.P.

            L.A.D. Equity beneficially owns 693,299 shares of Common Stock
            comprised of 317,702 shares issuable upon conversion of $132,386
            principal amount of Debentures and 52,354 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 299,231 shares issuable upon
            exercise of 299,231 G Warrants, 16,008 shares issuable upon 


                                 Page 27 of 149
<PAGE>

            exercise of 16,008 H Warrants and 8,004 shares issuable upon
            exercise of 8,004 I Warrants.

            For purposes of this Schedule 13D, such 693,299 shares of Common
            Stock comprise 2.44% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            L.A.D. Equity shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            CRM 1997 Enterprise Fund, LLC

            CRM 1997 beneficially owns 2,102,237 shares of Common Stock
            comprised of 980,962 shares issuable upon conversion of $408,767
            principal amount of Debentures and 123,204 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 923,930 shares issuable upon
            exercise of 923,930 G Warrants, 49,428 shares issuable upon exercise
            of 49,428 H Warrants, and 24,713 shares issuable upon exercise of
            24,713 I Warrants currently owned by CRM 1997.

            For purposes of this Schedule 13D, such 2,102,237 shares of Common
            Stock comprise 6.88% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM 1997 shares the power to vote and dispose of all such securities
            with Cramer Rosenthal, its investment advisor with respect to such
            shares.

            CRM 1998 Enterprise Fund, LLC

            CRM 1998 beneficially owns 2,722,897 shares of Common Stock
            comprised of 593,972 shares of Common Stock and 2,128,925 shares
            issuable upon conversion of $659,967 principal amount of Class C
            Debentures currently owned by CRM 1998.

            For purposes of this Schedule 13D, such 2,722,897 shares of Common
            Stock comprise 8.9% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM 1998 shares the power to vote and dispose of all such securities
            with Cramer Rosenthal, its investment advisor with respect to such
            shares.

            CRM Partners, L.P.

            CRM Partners beneficially owns 1,771,532 shares of Common Stock
            comprised of 805,051 shares issuable upon conversion of $335,465
            principal amount of Debentures and 147,389 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 758,245 shares issuable upon
            exercise of 758,245 G warrants, 40,565 shares issuable upon 


                                 Page 28 of 149
<PAGE>

            exercise of 40,565 H Warrants, and 20,282 shares issuable upon
            exercise of 20,282 I Warrants currently owned by CRM Partners.

            For purposes of this Schedule 13D, such 1,771,532 shares of Common
            stock comprise 5.86% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM Partners shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            CRM Retirement Partners, L.P.

            CRM Retirement beneficially owns 984,182 shares of Common stock
            comprised of 447,250 issuable upon conversion of $186,369 principal
            amount of Debentures and 81,880 shares issuable upon conversion of
            the paid-in-kind interest payments accrued on such Debentures as of
            October 15, 1998, 421,248 shares issuable upon exercise of 421,428 G
            Warrants, 22,536 shares issuable upon exercise of 22,536 H Warrants,
            and 11,268 shares issuable upon exercise of 11,268 I Warrants
            currently owned by CRM Retirement.

            For purposes of this Schedule 13D, such 984,182 shares of Common
            stock comprise 3.34% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM Retirement shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            CRM Madison Partners, L.P.

            CRM Madison beneficially owns 984,182 shares of Common Stock
            comprised of 447,250 shares issuable upon conversion of $43,858
            principal amount of Debentures and 81,880 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 421,248 shares issuable upon
            exercise of 421,248 G Warrants, 22,536 shares issuable upon exercise
            of 22,536 H Warrants, and 11,268 shares issuable upon exercise of
            11,268 I Warrants currently owned by CRM Madison.

            For purposes of this Schedule 13D, such 984,182 shares of Common
            Stock comprise 3.34% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM Madison shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            CRM U.S. Value Fund, Ltd.

            CRM U.S. Value beneficially owns 336,152 shares of Common Stock
            comprised of 154,120 shares issuable upon conversion of $64,217
            principal amount of 


                                 Page 29 of 149
<PAGE>

            Debentures and 25,222 shares issuable upon conversion of the
            paid-in-kind interest payments accrued on such Debentures as of
            October 15, 1998, 145,161 shares issuable upon exercise of 145,161 G
            Warrants, 7,766 shares issuable upon exercise of 7,766 H Warrants,
            and 3,883shares issuable upon exercise of 3,883 I Warrants currently
            owned by CRM U.S. Value.

            For purposes of this Schedule 13D, such 336,152 shares of Common
            Stock comprise 1.17% of the issued and outstanding shares of the
            Common Stock based on information received from the Company.

            CRM U.S. Value shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            A.C. Israel Enterprise, Inc.

            A.C. Israel beneficially owns 3,242,098 shares of Common Stock
            comprised of 1,027,480 shares issuable upon conversion of $428,117
            principal amount of Debentures and 168,154 shares issuable upon
            conversion of the paid-in-kind interest payments accrued on such
            Debentures as of October 15, 1998, 967,742 shares issuable upon
            exercise of 967,742 G Warrants, 51,772 shares issuable upon exercise
            of 51,772 H Warrants, 25,886 shares issuable upon exercise of 25,886
            I Warrants, 218,372 shares of Common Stock and 782,692 shares
            issuable upon conversion of $242,635 principal amount of Class C
            Debentures currently owned by A.C. Israel.

            For purposes of this Schedule 13D , such 3,242,098 shares of Common
            Stock comprise 10.29% of the issued and outstanding shares of the
            Common Stock, based on information received from the Company.

            A.C. Israel shares the power to vote and dispose of all such
            securities with Cramer Rosenthal, its investment advisor with
            respect to such shares.

            CRM-EFO Partners, L.P.

            CRM-EFO beneficially owns 810,523 shares of Common Stock comprised
            of 256,870 shares issuable upon conversion of $107,029 principal
            amount of Debentures and 42,038 shares issuable upon conversion of
            the paid-in-kind interest payments accrued on such Debentures as of
            October 15, 1998, 241,936 shares issuable upon exercise of 241,936 G
            Warrants, 12,943 shares issuable upon exercise of 12,943 H Warrants,
            and 6,471 shares issuable upon exercise of 6,471 I Warrants, and
            54,592 shares of Common Stock and 195,673 shares issuable upon
            conversion of $60,659 principal amount of Class C Debentures
            currently owned by CRM-EFO.

            For purposes of this Schedule 13D, such 810,523 shares of Common
            Stock comprise 2.77% of the issued and outstanding shares of the
            Common Stock.

            CRM-EFO shares the power to vote and dispose of all such securities
            with Cramer Rosenthal, its investment advisor with respect to such
            shares.


                                 Page 30 of 149
<PAGE>

            The Reporting Persons are making this single, joint filing because
            they may be deemed to constitute a "group" within the meaning of
            Section 13(d)(3) of the Exchange Act. In the event such a "group" is
            deemed to exist between the Reporting Persons, the "group"
            beneficially owns 19,166,965 shares of Common Stock, comprised of
            6,185,426 shares issuable upon conversion of $2,577,467 principal
            amount of Debentures and 1,012,279 shares issuable upon conversion
            of the paid-in-kind interest payments accrued on such Debentures as
            of October 15, 1998, 6,025,937 shares issuable upon exercise of
            6,025,937 G Warrants, 311,638 shares issuable upon exercise of
            311,638 H Warrants, 155,834 shares issuable upon conversion of
            155,834 I Warrants, 1,194,492 shares of Common Stock and 4,281,329
            shares issuable upon conversion of $1,400,000 principal amount of
            Class C Debentures currently owned by the Reporting Persons. For
            purposes of this Schedule 13D, such 19,166,965 shares of Common
            Stock comprise 41.27% of the issued and outstanding shares of Common
            Stock, based on information received from the Company. In the event
            a "group" is deemed to exist between the Reporting Persons within
            the meaning of 13(d)(3) of the Exchange Act, for purposes of this
            Schedule 13D each Reporting Person (other than Cramer Rosenthal)
            would be deemed to possess shared power to vote and dispose of the
            Common Stock held by such Reporting Person directly, with Cramer
            Rosenthal, the investment advisor to each such Reporting Person, and
            shared power to vote and dispose of the remainder of Common Stock of
            the Company beneficially owned by the "group". Cramer Rosenthal
            would be deemed to possess sole power to vote and dispose of the
            Common Stock directly held by it, and shared power to vote and
            dispose of the remainder of Common Stock beneficially owned by the
            "group".

Item 6.     Contracts, Arrangements, Understandings or Relationships with 
            respect to Securities of the Issuer.

            Item 6 is hereby amended and restated to read as follows:

            In accordance with the terms of the Class C Debentures, from and
            after the earliest of (i) January 31, 1999, (ii) the consummation of
            a Qualifying Offering (as defined therein), or (iii) the date of any
            repayment notice given by the Company pursuant to Section 2(d)
            thereof, any holder of the Class C Debentures has the right,
            exercisable at his, her or its option at any time during which the
            principal amount of such Class C Debenture is outstanding, to
            convert the Class C Debenture, into a number of fully paid and
            non-assessable shares equal to (i) the result obtained by dividing
            the stated principal amount of the Class C Debenture by the
            conversion rate established for any equity security issued in a
            Qualifying Offering (as defined in the Class C Debenture), if the
            Class C Debenture is converted on or after the consummation of a
            Qualifying Offering, or (ii) if no Qualifying Offering has occurred
            on or prior to such conversion, the result obtained by dividing the
            stated principal amount of the Class C Debenture by (X) $0.52 per
            share if the Class C Debenture is converted on or prior to January
            31, 1999, (Y) $0.45 per share if the Class C Debenture is converted
            on or after February 1, 1999 and on or prior to April 30, 1999, or
            (Z) $0.31 per share if the Class C Debenture is converted on or
            after May 1, 1999. The respective 


                                 Page 31 of 149
<PAGE>

            conversion prices set forth above are subject to adjustment in
            certain circumstances as provided in the Class C Debenture.

            Pursuant to a Registration Rights Agreement (the "Registration
            Rights Agreement"), dated as of October 1998, the Company has agreed
            to provide certain registration rights to investors (including
            certain Reporting Persons) in the Class C Debentures purchased
            pursuant to the Second Purchase Agreement.

            Reference is made to Item 1 above regarding the Debentures, the G
            Warrants, the H Warrants and the I Warrants.

            Reference is made to Item 4 above regarding certain arrangements
            relating to transfer or voting of securities.

            Except as set forth elsewhere in this Schedule 13D, the Reporting
            Persons do not have any contract, arrangement, understanding or
            relationship (legal or otherwise) with any person with respect to
            any securities of the Company, including, but not limited to,
            transfer or voting of any such securities, finders' fees, joint
            ventures, loan or option arrangements, puts or calls, guarantees of
            profits, division of profits or losses, or the giving or withholding
            of proxies.

Item 7.     Material to be Filed as Exhibits.

            Item 7 is hereby amended as follows:

            4.    Form of Debenture,
            5.    Form of Class C Debenture.
            6.    Form of G Warrant.
            7.    Form of H Warrant.
            8.    Form of I Warrant.
            9.    Registration Rights Agreement


                                 Page 32 of 149
<PAGE>

                                    SIGNATURE


            After reasonable inquiry, and to the best of our knowledge and
            belief, the undersigned certify that the information set forth in
            this statement is true, complete and correct.

Date: November 2, 1998

CRAMER ROSENTHAL McGLYNN, LLC


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Principal Director of Operations


L.A.D. EQUITY PARTNERS, L.P

By: Flint Investments, Inc.
its General Partner


By: /s/ Arthur J. Pergament
- ------------------------------------
Name:  Arthur J. Pergament
Title: Vice President


/s/ Gerald B. Cramer
- ---------------------------------------
Gerald B. Cramer


/s/ Edward. J. Rosenthal
- ---------------------------------------
Edward J. Rosenthal, Keogh


CRM 1997 ENTERPRISE FUND, LLC

By: Cramer Rosenthal McGlynn, LLC
its Managing Member


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Principal Director of Operations


                                 Page 33 of 149
<PAGE>

CRM 1998 ENTERPRISE FUND, LLC

By: Cramer Rosenthal McGlynn, LLC,
its General Partner


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Principal Director of Operations


CRM PARTNERS, L.P.

By: CRM Management, Inc.
its General Partner


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title:  Vice President


CRM RETIREMENT PARTNERS, L.P.

By: CRM Management, Inc.
its General Partner


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Vice President


CRM MADISON PARTNERS, L.P.

By: CRM Management, Inc.
its General Partner


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Vice President


                                 Page 34 of 149
<PAGE>

CRM U.S. VALUE FUND, LTD.

By: CRM Management, Inc.
its General Partner


By: /s/ Eugene A. Trainor
- ------------------------------------
Name:  Eugene A. Trainor
Title: Senior Vice President


A C. ISRAEL ENTERPRISES, INC.


By: /s/ Jay Howard
- ------------------------------------
Name: Jay Howard
Title:


CRM-EFO PARTNERS, L.P.

By: CRM-EFO Investments, LLC,
its General Partner

By: CRM Management Inc.,
its Managing Member


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Vice President


RICHARD S. FULD, JR.

By: Cramer Rosenthal McGlynn, LLC,
Attorney-in-Fact


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Principal Director of Operations


                                 Page 35 of 149
<PAGE>

McGLYNN FAMILY PARTNERSHIP

By: Cramer Rosenthal McGlynn, LLC,
Attorney-in-Fact


By: /s/ Michael Marrone
- ------------------------------------
Name:  Michael Marrone
Title: Principal Director of Operations


                                 Page 36 of 149
<PAGE>

                                  Exhibit Index

Sequential
Exhibit No.              Description                        Page No.
- -----------              -----------                        --------

4.                       Form of Debenture,

5.                       Form of Class C Debenture.

6.                       Form of G Warrant.

7.                       Form of H Warrant.

8.                       Form of I Warrant.

9.                       Registration Rights Agreement


                                 Page 37 of 149



                                    EXHIBIT 4

                                FORM OF DEBENTURE


                                 Page 38 of 149
<PAGE>

                                                                       EXHIBIT 4

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND CANNOT BE SOLD OR TRANSFERRED
UNLESS AND UNTIL THEY ARE SO REGISTERED OR UNLESS AN EXEMPTION UNDER SUCH ACT OR
LAWS IS AVAILABLE. THE TRANSFERABILITY OF THESE SECURITIES IS FURTHER SUBJECT TO
THE PROVISIONS OF A PURCHASE AGREEMENT DATED AS OF JULY 29, 1997 AMONG THE
COMPANY AND THE PURCHASERS NAMED THEREIN.

                         CLASS A 13% CONVERTIBLE SENIOR
                   SUBORDINATED PAY-IN-KIND DEBENTURE DUE 1999

                                  July 29, 1997

LOGIMETRICS, INC., a Delaware corporation (the "Company"), hereby promises to
pay to the order of ____________ (together with its, his or her successors and
assigns, the "Holder") the principal amount of $__________ Dollars
($_________)in lawful money of the United States, together with interest thereon
calculated from the date hereof and payable in accordance with the provisions of
this debenture ("Debenture").

      By accepting this Debenture, the Holder agrees that the obligations of the
Company to the Holder under this Debenture shall be subordinated only to the
Senior Debt (as hereinafter defined) of the Company, all upon the terms set
forth in paragraph 4 hereof.

      This Debenture may be surrendered for transfer or exchange by the Holder
hereof upon surrender of this Debenture, together with a properly completed bond
power or other instrument of transfer, and any required signature guarantees, at
the office of the Company set forth in Section 11 hereof. Upon proper surrender,
the Company shall issue one or more replacement Debentures of like tenor
registered in the names and in the denominations requested by the surrendering
Holder and dated the date of issuance thereof; provided, however, that (i)
appropriate adjustments shall be made to reflect the date of issue and principal
amount of each such replacement Debenture, (ii) the aggregate principal amount
of all Debentures, excluding Accrued Interest Debentures (as defined below),
shall be limited to $3,583,333, and (iii) no Debenture shall be issued in a
principal amount of less than $50,000 unless in connection with a transfer
resulting from the complete liquidation of the original Holder of this
Debenture. All Debentures shall rank pari passu.

      1. Payment of Interest. Subject to subparagraph 6(c)(xviii)(C) hereof,
interest will accrue from the date hereof at the rate of thirteen percent (13%)
per annum on the unpaid principal amount of this Debenture outstanding from time
to time on the basis of a 360-day year for the actual number of days elapsed.
Subject to paragraph 4 hereof, the Company will pay to the Holder all accrued
and unpaid interest on this Debenture on October 15, 1997 and quarterly
thereafter, in arrears, on the 15th day of January, the 15th day of April, the
15th day of July and the 15th day of October (each, an "Interest Payment Date")
to and including the earlier to occur of the Conversion Date (hereinafter
defined) or the Due Date (hereinafter defined). Interest will 


                                 Page 39 of 149
<PAGE>

accrue at the greater of the Default Rate (hereinafter defined) and the rate of
fifteen percent (15%) per annum on any principal payment past due under this
Debenture and, unless prohibited under applicable law (and if so prohibited then
only to the extent not so prohibited), on any interest which has not been paid
on the date on which it is due and payable (without giving effect to any
applicable grace periods or paragraph 4 hereof) until such time as payment
therefor is actually delivered to the Holder.

            On each Interest Payment Date other than the Due Date (as defined
below), in payment of the interest due on this Debenture on such Interest
Payment Date, the Company shall deliver to the Holder of this Debenture a new
Debenture (an "Accrued Interest Debenture"), in the form of this Debenture,
dated such Interest Payment Date (and bearing interest from such Interest
Payment Date) and having a principal amount corresponding to the interest due on
this Debenture on such Interest Payment Date. On the Due Date, in payment of the
interest due on this Debenture on such date, the Company shall deliver, at the
option of the Holder, either (a) a cash payment in such amount, or (b) the
number of shares of Common Stock, par value $.01 per share ("Common Stock"),
into which Accrued Interest Debentures would be convertible pursuant to Section
6 hereof if Accrued Interest Debentures had been issued to the Holder on the Due
Date in payment of such interest and such Accrued Interest Debentures were
converted by the Holder immediately thereafter. Unless the Holder gives the
Company not less than 10 days' prior written notice of the exercise of such
option, the Holder shall be deemed to have irrevocably elected to receive
payment of such interest in cash on the Due Date. Any exercise or deemed
exercise of such option shall be binding on any subsequent Holder of this
Debenture.

      2. Payment of Principal on Debenture.

            (a) Scheduled Payments. The Company will repay the principal amount
of this Debenture on July 29, 1999 ("Due Date").

            (b) Optional Prepayment. At any time after April 29, 1998, provided
that the Registration Statement (hereinafter defined) is effective and available
for sales of Registrable Securities (hereinafter defined) thereunder, the
Company may at any time hereafter prepay, without premium or penalty, all (but
not less than all) of the outstanding principal amount of the Debentures
(including, for this purpose, the Accrued Interest Debentures), together with
interest accrued on such prepaid amount to the date of payment; provided (i) the
average closing price of the Company's Common Stock on days the Common Stock
traded during the 120-day period immediately preceding the date of the notice
provided for in paragraph (c) hereinbelow shall have been not less than $5.00,
and (ii) the closing price of the Common Stock for each of the 30 trading days
immediately preceding the date of such notice shall have been not less than
$5.00, adjusted in each case for stock splits, stock dividends or other similar
transactions affecting the price of the Common Stock. All such prepayments shall
be applied pro rata to all of the Debentures. At the option of the Holder,
interest accrued on the prepaid amount to the date of payment shall be paid
either (a) in cash or (b) by the issuance by the Company to the Holder of shares
of Common Stock into which Accrued Interest Debentures would be convertible
pursuant to Section 6 hereof if Accrued Interest Debentures had been issued to
the Holder on such date in payment of such interest and such Accrued Interest
Debentures were converted by the Holder immediately thereafter. Unless the
Holder gives the Company not less than 10 days' prior written notice of the
exercise of such option, the Holder shall be deemed to have irrevocably elected
to receive payment of such interest in cash. Any exercise or deemed exercise of
such option shall be binding on any subsequent Holder of this Debenture.


                                 Page 40 of 149
<PAGE>

            (c) Notice of Prepayment. The Company will give written notice of
its election to prepay this Debenture to the Holder in person or by registered
or certified mail, return receipt requested, at least thirty (30) and not more
than forty-five (45) days prior to the date of prepayment. On the date of
prepayment specified in the Company's notice, the Company will deliver to the
Holder of this Debenture in person or by registered or certified mail, return
receipt requested, a cashier's or certified check for the entire outstanding
principal amount being prepaid, together with all accrued interest thereon
through the date of prepayment.

      3. Intentionally Omitted.

      4. Subordination. The Company's payment, whether voluntary or involuntary,
whether in cash, property, securities or otherwise and whether by application of
offset or otherwise (hereinafter "Payment") of any of its obligations under this
Debenture, other than the issuance of Accrued Interest Debentures, shall be
subject to the following restrictions:

            (a) Subordination to Senior Debt. Anything in this Debenture to the
contrary notwithstanding, the obligations of the Company in respect of the
principal of and interest (including any premium or penalty) on this Debenture
and any other amounts due under this Debenture (the "Subordinated Debt") shall
be subordinate and junior in right of payment, to the extent and in the manner
hereinafter set forth, to the Senior Debt. "Senior Debt", when used with respect
to the Company, means (i) the Company's indebtedness to North Fork Bank ("Bank")
under (A) that certain $640,000.04 Restated and Amended Term Loan Note, dated
April 25, 1997, and (B) that certain $2,200,000 Sixth Restated and Amended
Revolving Credit Note, dated April 25, 1997, in each case, together with
interest thereon and (ii) renewals, extensions, refinancings, deferrals,
restructurings, amendments, modifications and waivers of the indebtedness
described in clause (i) above.

            (b) Default on Senior Debt. So long as the Senior Debt has not been
paid in full, if there shall occur a default in the payment when due of any
amount due and owing on account of Senior Debt (any of the foregoing being a
"Senior Debt Default") then, from and after the receipt of written notice
thereof from the holder of Senior Debt unless and until such Senior Debt Default
shall have been remedied or waived the Company will not make any Payment on any
Subordinated Debt, and the Holders of Subordinated Debt will not receive or
accept any direct or indirect Payment in respect thereof, and the Company may
not redeem or otherwise acquire any Subordinated Debt.

            (c) Changes in Senior Debt. Any holder of Senior Debt may, at any
time and from time to time, without the consent of, or notice to, the Holder and
without incurring responsibility to the Holder, and without impairing or
releasing the obligations of the Holder hereunder:

                  (i) Change the manner, place or terms of payment or change or
      extend the time of payment of or renew or alter the Senior Debt or any
      portion thereof; provided, however, that without the written consent of
      the Majority Holders (hereinafter defined) the principal amount of and
      interest rate applicable from time to time to Senior Debt may not be
      increased (other than pursuant to the terms of the Senior Debt as such
      terms existed on the date of issuance hereof);


                                 Page 41 of 149
<PAGE>

                  (ii) Sell, exchange, release or otherwise deal with any
      collateral securing the Senior Debt or any other property by whomsoever at
      any time pledged or mortgaged to secure, or however securing, the Senior
      Debt or any portion thereof; and

                  (iii) Apply any sums by whomsoever paid or however released to
      the Senior Debt or any portion thereof.

            (d) Consent to Senior Debt. By acceptance of this Debenture, the
Holder hereby consents to the making of Senior Debt and hereby acknowledges that
each current and future holder of Senior Debt has relied, and in the future will
rely, upon the terms of this Debenture. The holders of Senior Debt shall have no
liability to the Holder and the Holder hereby waives any claim which it may have
now or hereafter against any holder of Senior Debt arising from any and all
actions which any holder of Senior Debt may take or omit to take in good faith
with regard to the Senior Debt or its rights or obligations hereunder.

            (e) Payments in Trust. Until the Senior Debt has been repaid in
full, in the event the Holder shall receive any Payment in contravention of the
provisions of this paragraph 4 including, Payments arising under the
subordination provisions of any other indebtedness of the Company, the Holder
shall hold all such Payments so received in trust for the holders of Senior Debt
and shall forthwith turn over all such Payments to the holders of Senior Debt in
the form received (except for the endorsement or assignment of the Holder as
necessary, without recourse or warranty) to be applied to payment of the Senior
Debt whether or not then due and payable. Any Payment so received in trust and
turned over to the holders of Senior Debt shall not be deemed a Payment in
satisfaction of the Subordinated Debt by the Company.

            (f) Payment in full of Senior Debt; Subrogation. If any Payment to
which a Holder of Subordinated Debt would otherwise have been entitled but for
the provisions of this paragraph 4 shall have been applied, pursuant to the
provisions of this paragraph 4, to the payment of Senior Debt, then and in such
case, the Holder of the Subordinated Debt (i) shall be entitled to receive from
the holders of Senior Debt at the time outstanding any payments or distributions
received by such holders of Senior Debt in excess of the amount sufficient to
pay all Senior Debt in cash in full (whether or not then due), and (ii)
following payment of the Senior Debt in full, shall be subrogated to any right
of the holders of Senior Debt to receive any and all further payments or
distributions applicable to Senior Debt, until all the Subordinated Debt shall
have been paid in full. If the Holder of the Subordinated Debt shall have been
subrogated to the rights of the holders of Senior Debt due to the operation of
this paragraph 4(f), the Company agrees to take all such reasonable actions as
are requested by such Holders of the Subordinated Debt in order to cause such
Holders to be able to obtain payments from the Company with respect to such
subrogation rights as soon as possible.

            (g) No Impairment of the Company's Obligations. Nothing contained in
this paragraph 4, as between the Company and the Holder of this Debenture, shall
impair the obligation of the Company, which is absolute and unconditional, to
pay to the Holder the principal of and interest on this Debenture as and when
the same shall become due and payable in accordance with the terms hereof.

            (h) Advances in Reliance. The Holder of this Debenture, by its
acceptance hereof, agrees that each holder of Senior Debt has advanced funds or
may in the future advance funds in reliance upon the terms and conditions
hereof.


                                 Page 42 of 149
<PAGE>

            (i) Non-Waiver of Rights. No right of any holder of Senior Debt to
enforce its right of subordination as herein provided shall at any time in any
way be prejudiced or impaired by any act or failure to act on the part of the
Company, or by any act or failure to act by any such holder, or by any
non-compliance by the Company with the terms, provisions and covenants of this
Debenture, regardless of any knowledge thereof any such holder may have or be
otherwise charged with.

            (j) Recaptured Payments. Any Payments received by a holder of Senior
Debt from the Company or the Holder which, in connection with an Insolvency
Event or Proceeding (hereinafter defined), is required to be remitted to the
payor or the bankrupt estate shall not be deemed a Payment to such holder of
Senior Debt for all purposes hereunder.

      5. Security. The obligations of the Company to the Holder of this
Debenture (including the obligation to pay the Accrued Interest Debentures when
due) are secured by certain Collateral to the extent provided in the Amended and
Restated Security Agreement, dated as of March 7, 1996, as amended and restated
as of July 29, 1997 ("Security Agreement"), made by the Company in favor of
Holders of the Debentures. In addition to all rights and remedies provided
herein, Holders of the Debentures are entitled to the benefits provided in the
Security Agreement. By accepting this Debenture, the Holder hereof agrees to be
bound by the terms of the Security Agreement.

      6. Conversion Rights.

            (a) The Holder of this Debenture has the right (the "Conversion
Right"), exercisable at his, her or its option at any time during which the
principal amount of this Debenture is outstanding, to convert this Debenture,
but only in whole, into Written (Share) shares of Common Stock, subject to
adjustment in certain circumstances as provided herein.

            (b) The Conversion Right is exercisable upon surrender of this
Debenture, together with a conversion notice, in the form attached hereto as
Exhibit A, duly executed and completed, evidencing the election of the Holder to
exercise the Conversion Right, at the Company's principal office at 50 Orville
Drive, Bohemia, New York 11716. The registered owner of this Debenture shall
become the record holder of the shares of Common Stock issuable upon conversion
as of the date of exercise of the Conversion Right (the "Conversion Date"). The
shares issued in connection with the Conversion Right shall be registered
initially in the name of the Holder, and delivered to the Holder no later than
two (2) business days after receipt of a properly completed conversion notice.
Upon conversion, the Company shall pay to the Holder accrued but unpaid interest
on this Debenture up to, but excluding, the Conversion Date. At the option of
the Holder, such accrued but unpaid interest shall be paid either (a) in cash or
(b) by the issuance by the Company to the Holder of shares of Common Stock into
which Accrued Interest Debentures would be convertible pursuant to Section 6
hereof if Accrued Interest Debentures had been issued to the Holder on such date
in payment of such interest and such Accrued Interest Debentures were converted
by the Holder immediately thereafter. Unless the Holder gives the Company not
less than 10 days' prior written notice of the exercise of such option, the
Holder shall be deemed to have irrevocably elected to receive payment of such
interest in cash. Any exercise or deemed exercise of such option shall be
binding on any subsequent Holder of this Debenture.


                                 Page 43 of 149
<PAGE>

            (c) In case, at any time or from time to time after the date of
issuance of this Debenture ("Issuance Date"), the Company shall issue or sell
shares of its Common Stock (other than any Common Stock issuable upon the
exercise or conversion of (i) the Debentures (and any replacement Debenture or
Debentures issued upon transfer or exchange of this Debenture), (ii) any Accrued
Interest Debentures (and any replacement Accrued Interest Debenture or Accrued
Interest Debentures issued upon transfer or exchange of the Accrued Interest
Debentures), (iii) the Company's Amended and Restated Class B 13% Convertible
Senior Subordinated Pay-in-Kind Debentures due 1999 (the "Class B Debentures")
(and any replacement Class B Debenture or Class B Debentures issued upon
transfer or exchange of the Class B Debentures), (iv) any additional securities
issued in lieu of cash interest otherwise payable on the Class B Debentures (the
"Class B Accrued Interest Debentures") (and any replacement Class B Accrued
Interest Debenture or Class B Accrued Interest Debentures issued upon transfer
or exchange of the Class B Accrued Interest Debentures), (v) securities
outstanding on the date hereof, (vi) awards made pursuant to the Company's Stock
Compensation Program (the "Plan"), (vii) awards made pursuant to any incentive
compensation plan or arrangement approved by the Company's Board of Directors or
by the Compensation Committee of the Company's Board of Directors, (viii) the
Company's Series G Warrants, (ix) the Company's Series H Warrants, or (x) the
Company's Series I Warrants) (such securities, collectively, the "Subject
Securities") for a consideration per share less than $.52 per share ("Trigger
Price"), or, if a Pro Forma Adjusted Trigger Price (hereinafter defined) shall
be in effect as provided below in this paragraph (c), then less than such Pro
Forma Adjusted Trigger Price per share, then and in each such case the Holder of
this Debenture, upon the conversion hereof as provided in paragraph (a) hereof,
shall be entitled to receive, in lieu of the shares of Common Stock theretofore
receivable upon the conversion of this Debenture, a number of shares of Common
Stock determined by (a) dividing the Trigger Price by a Pro Forma Adjusted
Trigger Price per share to be computed as provided below in this paragraph (c),
and (b) multiplying the resulting quotient by the number of shares of Common
Stock into which this Debenture is then convertible. A Pro Forma Adjusted
Trigger Price per share shall be the price computed (to the nearest cent, a
fraction of half cent or more being considered a full cent):

            by dividing (i) the sum of (x) the result obtained by multiplying
            the number of shares of Common Stock of the Company outstanding
            immediately prior to such issue or sale by the Trigger Price (or, if
            a Pro Forma Adjusted Trigger Price shall be in effect, by such
            Price), and (y) the consideration, if any, received by the Company
            upon such issue or sale, by (ii) the number of shares of Common
            Stock of the Company outstanding immediately after such issue or
            sale.

For the purpose of this paragraph (c):

                  (i) In case the Company splits its Common Stock or shall
      declare any dividend, or make any other distribution, upon any stock of
      the Company of any class payable in Common Stock, or in any stock or other
      securities directly or indirectly convertible into or exchangeable for
      Common Stock (any such stock or other securities being hereinafter called
      "Convertible Securities"), such split, declaration or distribution shall
      be deemed to be an issue or sale (as of the record date for such split,
      dividend or other distribution), without consideration, of such Common
      Stock or such Convertible Securities, as the case may be.


                                 Page 44 of 149
<PAGE>

                  (ii) In case the Company shall issue or sell any Convertible
      Securities other than the Subject Securities, there shall be determined
      the price per share for which Common Stock is issuable upon the conversion
      or exchange thereof, such determination to be made by dividing (a) the
      total amount received or receivable by the Company as consideration for
      the issue or sale of such Convertible Securities, plus the minimum
      aggregate amount of additional consideration, if any, payable to the
      Company upon the conversion or exchange thereof, by (b) the maximum number
      of shares of Common Stock of the Company issuable upon the conversion or
      exchange of all such Convertible Securities.

                  If the price per share so determined shall be less than the
      Trigger Price (or, if a Pro Forma Adjusted Trigger Price shall be in
      effect, less than such Price) as of the date of such issue or sale, then
      such issue or sale shall be deemed to be an issue or sale for cash (as of
      the date of issue or sale of such Convertible Securities) of such maximum
      number of shares of Common Stock at the price per share so determined,
      provided that, if such Convertible Securities shall by their terms provide
      for an increase or increases, with the passage of time, in the amount of
      additional consideration, if any, payable to the Company, or in the rate
      of exchange, upon the conversion or exchange thereof, the Pro Forma
      Adjusted Trigger Price per share shall, forthwith upon any such increase
      becoming effective, be readjusted to reflect the same, and provided,
      further, that upon the expiration of such rights of conversion or exchange
      of such Convertible Securities, if any thereof shall not have been
      exercised, the Pro Forma Adjusted Trigger Price per share shall forthwith
      be readjusted and thereafter be the price which it would have been had an
      adjustment been made on the basis that the only shares of Common Stock so
      issued or sold were those issued or sold upon the conversion or exchange
      of such Convertible Securities, and that they were issued or sold for the
      consideration actually received by the Company upon such conversion or
      exchange, plus the consideration, if any, actually received by the Company
      for the issue or sale of all such Convertible Securities which shall have
      been converted or exchanged.

                  (iii) In case the Company shall grant any rights or options to
      subscribe for, purchase or otherwise acquire Common Stock of any class
      other than the Subject Securities, there shall be determined the price per
      share for which Common Stock is issuable upon the exercise of such rights
      or options, such determination to be made by dividing (a) the total
      amount, if any, received or receivable by the Company as consideration for
      the granting of such rights or options, plus the minimum aggregate amount
      of additional consideration, if any, payable to the Company upon the
      exercise of such rights or options, by (b) the maximum number of shares of
      Common Stock issuable upon the exercise of such rights or options.

                  If the price per share so determined shall be less than the
      Trigger Price (or, if a Pro Forma Adjusted Trigger Price shall be in
      effect, less than such Price) as of the date of such issue or sale, then
      the granting of such rights or options shall be deemed to be an issue or
      sale for cash (as of the date of the granting of such rights or options)
      of such maximum number of shares of Common Stock at the price per share so
      determined, provided that, if such rights or options shall by their terms
      provide for an increase or increases, with the passage of time, in the
      amount of additional consideration, if any, payable to the Company upon
      the exercise thereof, the Pro Forma Adjusted


                                 Page 45 of 149
<PAGE>

      Trigger Price per share shall, forthwith upon any such increase becoming
      effective, be readjusted to reflect the same, and provided, further, that
      upon the expiration of such rights or options, if any thereof shall not
      have been exercised, the Pro Forma Adjusted Trigger Price per share shall
      forthwith be readjusted and thereafter be the price which it would have
      been had an adjustment been made on the basis that the only shares of
      Common Stock so issued or sold were those issued or sold upon the exercise
      of such rights or options and that they were issued or sold for the
      consideration actually received by the Company upon such exercise, plus
      the consideration, if any, actually received by the Company for the
      granting of all such rights or options, whether or not exercised.

                  (iv) In case the Company shall grant any rights or options to
      subscribe for, purchase or otherwise acquire Convertible Securities other
      than the Subject Securities, such Convertible Securities shall be deemed,
      for the purposes of subparagraph (iii) above, to have been issued or sold
      for the total amount received or receivable by the Company as
      consideration for the granting of such rights or options plus the minimum
      aggregate amount of additional consideration, if any, payable to the
      Company upon the exercise of such rights or options, provided that, upon
      the expiration of such rights or options, if any thereof shall not have
      been exercised, the Pro Forma Adjusted Trigger Price per share shall
      forthwith be readjusted and thereafter be the price which it would have
      been had an adjustment been made upon the basis that the only Convertible
      Securities so issued or sold were those issued or sold upon the exercise
      of such rights or options and that they were issued or sold for the
      consideration actually received by the Company upon such exercise, plus
      the consideration, if any, actually received by the Company for the
      granting of all such rights or options, whether or not exercised.

                  (v) In case any shares of stock or other securities, other
      than Common Stock of the Company, shall at any time be receivable upon the
      conversion of this Debenture, and in case any additional shares of such
      stock or any additional such securities (or any stock or other securities
      convertible into or exchangeable for any such stock or securities) shall
      be issued or sold for a consideration per share such as to dilute the
      purchase rights evidenced by this Debenture, then and in each such case
      the Pro Forma Adjusted Trigger Price per share shall forthwith be
      adjusted, substantially in the manner provided for above in this paragraph
      (c), so as to protect the Holder of this Debenture against the effect of
      such dilution.

                  (vi) In case any shares of Common Stock or Convertible
      Securities or any rights or options to subscribe for, purchase or
      otherwise acquire any Common Stock or Convertible Securities shall be
      issued or sold for cash, the consideration received therefor shall be
      deemed to be the amount received by the Company therefor, after deducting
      any expenses incurred and any underwriting or similar commissions,
      compensation or concessions paid or allowed by the Company in connection
      with such issue or sale.

                  (vii) In case any shares of Common Stock or Convertible
      Securities or any rights or options to subscribe for, purchase or
      otherwise acquire any Common Stock or Convertible Securities shall be
      issued or sold for a consideration other than cash (or a consideration
      which includes cash and other assets) then, for the purpose of this
      paragraph (c), the Board of Directors of the Company shall promptly
      determine the fair


                                 Page 46 of 149
<PAGE>

      value of such consideration, and such Common Stock, Convertible
      Securities, rights or options shall be deemed to have been issued or sold
      on the date of such determination in good faith. Such value shall not be
      more than the amount at which such consideration is recorded in the books
      of the Company for accounting purposes except in the case of an
      acquisition accounted for on a pooling of interest basis. In case any
      Common Stock or Convertible Securities or any rights or options to
      subscribe for, purchase or otherwise acquire any Common Stock or
      Convertible Securities shall be issued or sold together with other stock
      or securities or other assets of the Company for a consideration which
      covers both, the Board of Directors of the Company shall promptly
      determine in good faith what part of the consideration so received is to
      be deemed to be the consideration for the issue or sale of such Common
      Stock or Convertible Securities or such rights or options.

                  The Company covenants and agrees that, should any
      determination of fair value of consideration or of allocation of
      consideration be made by the Board of Directors of the Company, pursuant
      to this subparagraph (vii), it will, not less than seven (7) days after
      any and each such determination, deliver to the Holder of this Debenture a
      certificate signed by the President or a Vice President and the Treasurer
      or an Assistant Treasurer of the Company reciting such value as thus
      determined and setting forth the nature of the transaction for which such
      determination was required to be made, the nature of any consideration,
      other than cash, for which Common Stock, Convertible Securities, rights or
      options have been or are to be issued, the basis for its valuation, the
      number of shares of Common Stock which have been or are to be issued, and
      a description of any Convertible Securities, rights or options which have
      been or are to be issued, including their number, amount and terms.

                  (viii) In case the Company shall take a record of the holders
      of shares of its stock of any class for the purpose of entitling them (a)
      to receive a dividend or a distribution payable in Common Stock or in
      Convertible Securities, or (b) to subscribe for, purchase or otherwise
      acquire Common Stock or Convertible Securities, then such record date
      shall be deemed to be the date of the issue or sale of the Common Stock
      issued or sold or deemed to have been issued or sold upon the declaration
      of such dividend or the making of such other distribution, or the date of
      the granting of such rights of subscription, purchase or other
      acquisition, as the case may be.

                  (ix) The number of shares of Common Stock outstanding at any
      given time shall include shares issuable in respect of scrip certificates
      issued in lieu of fractions of shares of Common Stock, but shall exclude
      shares in the treasury of the Company.

                  (x) Following each computation or readjustment of a Pro Forma
      Adjusted Trigger Price as provided in this paragraph (c), the newly
      computed or adjusted Pro Forma Adjusted Trigger Price shall remain in
      effect until a further computation or readjustment thereof is required by
      this paragraph (c).

                  (xi) In case at any time or from time to time after the
      Issuance Date the holders of the Common Stock of the Company of any class
      (or any other shares of stock or other securities at the time receivable
      upon the exercise of this Debenture)


                                 Page 47 of 149
<PAGE>

      shall have received, or, on or after the record date fixed for the
      determination of eligible stockholders, shall have become entitled to
      receive:

                        (A) other or additional stock or other securities or
            property (other than cash) by way of dividend;

                        (B) any cash paid or payable out of capital or paid-in
            surplus or surplus created as a result of a revaluation of property
            by way of dividend; or

                        (C) other or additional (or less) stock or other
            securities or property (including cash) by way of stock-split,
            spin-off, split-off, split-up, reclassification, combination of
            shares or similar corporate rearrangement;

(other than additional shares of Common Stock issued to holders of Common Stock
as a stock dividend or stock-split, adjustments in respect of which shall be
covered by the provisions of this paragraph (c)), then in each case the Holder
of this Debenture, upon the conversion hereof as provided in paragraph (a)
hereof, shall be entitled to receive, in lieu of, or in addition to, as the case
may be, the shares theretofore receivable upon the conversion of this Debenture,
the amount of stock or other securities or property (including cash in the cases
referred to in clauses (B) and (C) above) which such Holder would hold on the
date of such exercise if, on the Issuance Date, he, she or it had been the
holder of record of the number of shares of Common Stock of the Company into
which this Debenture is convertible and had thereafter, during the period from
the Issuance Date to and including the date of such conversion, retained such
shares and/or all other or additional (or less) stock or other securities or
property (including cash in the cases referred to in clauses (B) and (C) above)
receivable by him, her or it as aforesaid during such period, giving effect to
all adjustments called for during such period by paragraph (c) and subparagraph
(xii) hereof.

                  (xii) In case of any reorganization of the Company (or any
      other corporation the stock or other securities of which are at the time
      deliverable on the conversion of this Debenture) after the date hereof, or
      in case, after such date, the Company (or any such other corporation)
      shall consolidate with or merge into another corporation or convey all or
      substantially all its assets to another corporation, then and in each such
      case the Holder of this Debenture, upon the conversion hereof as provided
      in paragraph (a) hereof, at any time after the consummation of such
      reorganization, consolidation, merger or conveyance, shall be entitled to
      receive the stock or other securities or property to which such Holder
      would have been entitled upon such consummation if such Holder had
      converted this Debenture immediately prior thereto, all subject to further
      adjustments as provided for herein; in each such case, the terms of this
      Debenture shall be applicable to the shares of stock or other securities
      or property receivable upon the conversion of this Debenture after such
      consummation.

                  (xiii) The Company will not, by amendment of its charter or
      through reorganization, consolidation, merger, dissolution, sale of assets
      or any other voluntary action, avoid or seek to avoid the observance or
      performance of any of the terms of this Debenture, but will at all times
      in good faith assist in the carrying out of all such terms and in the
      taking of all such action as may be necessary or appropriate in order to
      protect the rights of the Holder hereof against dilution or other
      impairment. Without limiting the generality of the foregoing, the Company
      will not increase the par value of any shares of


                                 Page 48 of 149
<PAGE>

      stock receivable upon the conversion of this Debenture above the amount
      payable therefor upon such exercise, and at all times will take all such
      action as may be necessary or appropriate in order that the Company may
      validly and legally issue fully paid and non-assessable stock upon the
      conversion of this Debenture.

                  (xiv) In each case of an adjustment in the number of shares of
      Common Stock or other stock, securities or property receivable on the
      conversion of this Debenture, at the request of the Holder of this
      Debenture the Company at its expense shall promptly cause independent
      public accountants of recognized standing, selected by the Company, to
      compute such adjustment in accordance with the terms of this Debenture and
      prepare a certificate setting forth such adjustment and showing in detail
      the facts upon which such adjustment is based, including a statement of
      (A) the consideration received or to be received by the Company for any
      additional shares issued or sold or deemed to have been issued or sold,
      (B) the number of shares of Common Stock outstanding or deemed to be
      outstanding and (C) the Pro Forma Adjusted Trigger Price. The Company will
      forthwith mail a copy of each such certificate to the Holder of this
      Debenture.

                  (xv) In case:

                        (A) the Company shall take a record of the holders of
            its Common Stock (or other stock or securities at the time
            deliverable upon the conversion of this Debenture) for the purpose
            of entitling or enabling them to receive any dividend (other than a
            cash or stock dividend at the same rate as the rate of the last cash
            or stock dividend theretofore paid) or other distribution, or to
            exercise any preemptive right pursuant to the Company's charter, or
            to receive any right to subscribe for or purchase any shares of
            stock of any class or any other securities, or to receive any other
            right; or

                        (B) of any capital reorganization of the Company, any
            reclassification of the capital stock of the Company, any
            consolidation or merger of the Company with or into another
            corporation, or any conveyance of all or substantially all of the
            assets of the Company to another corporation; or

                        (C) of the voluntary or involuntary dissolution,
            liquidation or winding up of the Company;

then, and in each such case, the Company will mail or cause to be mailed to the
Holder of this Debenture a notice specifying, as the case may be, (i) the date
on which a record is to be taken for the purpose of such dividend, distribution
or right, and stating the amount and character of such dividend, distribution or
right, or (ii) the date on which such reorganization, reclassification,
consolidation, merger, conveyance, dissolution, liquidation or winding up is to
take place, and the times, if any is to be fixed, as of which the holders of
record of Common Stock (or such other stock or securities at the time
deliverable upon the exercise of this Debenture) shall be entitled to exchange
their shares of Common Stock of any class (or such other stock or securities)
for reclassification, consolidation, merger, conveyance, dissolution,
liquidation or winding up or (iii) the amount and character of the stock or
other securities proposed to be issued or granted, the date of such proposed
issuance or grant and the persons or class of persons to whom such stock


                                 Page 49 of 149
<PAGE>

or other securities are to be offered, issued or granted. Such notice shall be
mailed at least thirty (30) days prior to the date therein specified.

                  (xvi) The Company will at all times reserve and keep
      available, solely for issuance and delivery upon the conversion of this
      Debenture and other similar Debentures, such shares of Common Stock and
      other stock, securities and property as from time to time shall be
      issuable upon the exercise of this Debenture and all other similar
      Debentures at the time outstanding.

                  (xvii) Upon receipt of evidence reasonably satisfactory to the
      Company of the loss, theft, destruction or mutilation of this Debenture
      and (in the case of loss, theft or destruction) upon delivery of an
      indemnity agreement in an amount reasonably satisfactory to it, or (in the
      case of mutilation) upon surrender and cancellation thereof, the Company
      will issue, in lieu thereof, a new Debenture of like tenor.

                  (xviii) (A) On or prior to October 27, 1997, the Company will
      file a registration statement ("Registration Statement") with the
      Securities and Exchange Commission ("SEC") covering the shares of Common
      Stock issuable upon conversion of the Debentures and any Accrued Interest
      Debentures (and covering such other securities as the Company shall
      determine in its sole discretion) (collectively "Registrable Securities"),
      and will use its best efforts to cause the Registration Statement to
      become effective on or prior to the ninetieth day after such filing and to
      keep the Registration Statement effective until the earlier of (i) seven
      years from the date it is declared effective by the SEC, or (ii) the sale
      of all of the Registrable Securities.

                        (B) The following provisions shall be applicable to the
            Registration Statement:

                              (aa) The Company will use its best efforts to
                  cause the Registration Statement to become effective as
                  promptly as possible, and if any stop order shall be issued by
                  the SEC in connection therewith to use its reasonable efforts
                  to obtain the removal of such order. Following the effective
                  date of the Registration Statement, the Company shall, upon
                  the request of the Holder, forthwith supply such reasonable
                  number of copies of the Registration Statement, preliminary
                  prospectus and prospectus meeting the requirements of the Act,
                  and other documents necessary or incidental to a public
                  offering of the Registrable Securities, as shall be reasonably
                  requested by the Holder to permit the Holder to make a public
                  distribution of its, his or her Registrable Securities;
                  provided, however, that by accepting this Debenture, the
                  Holder agrees, if requested by the managing underwriter(s) in
                  connection with an underwritten public offering of the
                  Company's equity securities, to enter into a customary
                  agreement with such managing underwriter(s) not to offer for
                  sale or sell its, his or her Registrable Securities for up to
                  180 days after such offering. The Company will use its
                  reasonable efforts to qualify the Registrable Securities for
                  sale in such states as the holder of Registrable Securities
                  shall reasonably request, provided that no such qualification
                  will be required in any jurisdiction where, solely as a result
                  thereof, the Company


                                 Page 50 of 149
<PAGE>

                  would be subject to service of general process or to taxation
                  or qualification as a foreign corporation doing business in
                  such jurisdiction. The obligations of the Company hereunder
                  with respect to the Holder's Registrable Securities are
                  expressly conditioned on the Holder's furnishing to the
                  Company such appropriate information concerning the Holder,
                  the Holder's Registrable Securities and the terms of the
                  Holder's offering of such Registrable Securities as the
                  Company may reasonably request.

                              (bb) The Company shall pay all expenses incurred
                  in complying with the provisions of this subparagraph (xviii),
                  including, without limitation, all registration and filing
                  fees (including all expenses incident to filing with the
                  National Association of Securities Dealers, Inc.), printing
                  expenses, fees and disbursements of counsel to the Company,
                  securities law and blue sky fees and expenses and the expenses
                  of any regular and special audits incident to or required by
                  any such registration. All underwriting discounts and selling
                  commissions applicable to the sales of the Registrable
                  Securities, and any state or federal transfer taxes payable
                  with respect to the sales of the Registrable Securities and
                  all fees and disbursements of counsel for the Holder, if any,
                  in each case arising in connection with registration of the
                  Registrable Securities shall be payable by the Holder.

                              (cc) In connection with the registration of the
                  Registrable Securities pursuant to this subparagraph (xviii),
                  the Company shall indemnify and hold harmless the Holder, its
                  affiliates, officers, directors, partners, employees, agents
                  and representatives, each person, if any, who controls the
                  Holder within the meaning of the Securities Act of 1933, as
                  amended (the "Securities Act"), or the Securities Exchange Act
                  of 1934, as amended (the "Exchange Act"), any person deemed to
                  be an underwriter of the Registrable Securities and any person
                  claiming by or through any of them (collectively, the
                  "Indemnified Persons") from and against all losses, claims,
                  damages, expenses or liabilities (or actions in respect
                  thereof) arising out of or are based upon any untrue statement
                  of any material fact contained in the Registration Statement
                  or alleged untrue statement, under which such securities were
                  registered under the Securities Act, any preliminary
                  prospectus or final prospectus contained therein, or any
                  amendment or supplement thereto, or arise out of or are based
                  upon the omission to state therein a material fact required to
                  be stated therein or necessary to make the statements made
                  therein, in light of the circumstances under which they are
                  made, not misleading, or any violation by the Company of the
                  Securities Act, the Exchange Act or state securities or blue
                  sky laws applicable to the Company and relating to action or
                  inaction required of the Company in connection with such
                  registration or qualification under such state securities or
                  blue sky laws; and will reimburse the Indemnified Persons for
                  any legal or any other expenses reasonably incurred by them in
                  connection with investigating or defending any such loss,
                  claim, damage, liability or action; provided, however, that
                  the Company will not be liable in any such case to any
                  Indemnified Person to the extent that any such loss, claim,
                  damage or liability arises out of or


                                 Page 51 of 149
<PAGE>

                  is based upon an untrue statement or omission made in the
                  Registration Statement, said preliminary prospectus or said
                  final prospectus or said amendment or supplement or any
                  document incident thereto in reliance upon and in conformity
                  with written information furnished to the Company by or on
                  behalf of the Holder.

                              (dd) The Holder will indemnify and hold harmless
                  the Company and each person, if any, who controls the Company
                  within the meaning of the Securities Act or the Exchange Act,
                  each officer of the Company who signs the Registration
                  Statement and each director of the Company from and against
                  any and all such losses, claims, damages or liabilities
                  arising from any untrue statement in, or omission from, the
                  Registration Statement, any such preliminary or final
                  prospectus, amendment, or supplement or document incident
                  thereto if the statement or omission in respect of which such
                  loss, claim, damage or liability is asserted was made in
                  reliance upon and in conformity with information furnished in
                  writing to the Company by or on behalf of the Holder for use
                  in connection with the preparation of the Registration
                  Statement or such prospectus or amendment or supplement
                  thereof.

                              (ee) The reimbursements required by clauses (cc)
                  and (dd) shall be made by periodic payments during the course
                  of the investigation or defense as and when bills are received
                  or expenses incurred; provided, however, that to the extent
                  that an indemnified party receives periodic payments for legal
                  or other expenses during the course of an investigation or
                  defense, and such party subsequently received payments for
                  such expenses from any other parties to the proceeding, such
                  payments shall be used by the indemnified party to reimburse
                  the indemnifying party for such periodic payments. Any party
                  which proposes to assert the right to be indemnified under
                  clause (cc) or (dd) will, promptly after receipt of notice of
                  commencement of any action, suit or proceeding against such
                  party in respect of which a claim is to be made against any
                  indemnified party hereunder, notify each such indemnifying
                  party of the commencement of such action, suit or proceeding,
                  enclosing a copy of all papers served, but the failure to so
                  notify such indemnifying party of any such action, suit or
                  proceeding shall not relieve the indemnifying party from any
                  obligation which it may have to any indemnified party
                  hereunder unless and only to the extent that the indemnifying
                  party is prejudiced by said lack of notice. In case any such
                  action, suit or proceeding shall be brought against any
                  indemnified party and it shall notify the indemnifying party
                  of the commencement thereof, the indemnifying party shall be
                  entitled to participate in and, to the extent that it shall
                  wish, jointly with any other indemnifying party similarly
                  notified, to assume the defense thereof, with counsel
                  satisfactory to such indemnified party, and after notice from
                  the indemnifying party to such indemnified party of its
                  election so to assume the defense thereof, the indemnifying
                  party shall not be liable to such indemnified party for any
                  legal or other expense, other than reasonable costs of
                  investigation subsequently incurred by such indemnified party
                  in connection with the defense thereof. The


                                 Page 52 of 149
<PAGE>

                  indemnified party shall have the right to employ its own
                  counsel in any such action, but the reasonable fees and
                  expenses of such counsel shall be at the expense of such
                  indemnified party, when and as incurred, unless (A) the
                  employment of counsel by such indemnified party has been
                  authorized by the indemnifying party, (B) the indemnified
                  party has reasonably concluded (based on advice of counsel),
                  that there may be legal defenses available to it that are
                  different from or in addition to those available to the
                  indemnifying party, (C) the indemnified party shall have
                  reasonably concluded (based on advice of counsel) that there
                  may be a conflict of interest between the indemnifying party
                  and the indemnified party in the conduct of defense of such
                  action (in which case the indemnifying party shall not have
                  the right to direct the defense of such action on behalf of
                  the indemnified party), or (D) the indemnifying party shall
                  not in fact have employed counsel to assume the defense of
                  such action within 15 days after receipt of notice of such
                  action. An indemnifying party shall not be liable for any
                  settlement or any action or claim effected without its
                  consent, which shall not be unreasonably withheld.

                              (ff) If the indemnification provided for in this
                  subparagraph (xviii) is unavailable to any indemnified party
                  hereunder in respect of any losses, claims, damages,
                  liabilities or expenses referred to therein, then the
                  indemnifying party, in lieu of indemnifying such indemnified
                  party, shall contribute to the amount paid or payable by such
                  indemnified party as a result of such losses, claims, damages,
                  liabilities or expenses in such proportion as is appropriate
                  to reflect the relative fault of the indemnifying party and
                  indemnified parties in connection with the actions that
                  resulted in such losses, claims, damages, liabilities or
                  expenses, as well as any other relevant equitable
                  considerations. The relative fault of such indemnifying party
                  and indemnified parties shall be determined by reference to,
                  among other things, whether any action in question, including
                  any untrue or alleged untrue statement of a material fact or
                  omission or alleged omission to state a material fact, has
                  been made by, or relates to information supplied by, such
                  indemnifying party or indemnified parties, and the parties'
                  relative intent, knowledge, access to information and
                  opportunity to correct or prevent such action. The amount paid
                  or payable by a party as a result of the losses, claims,
                  damages, liabilities and expenses referred to above shall be
                  deemed to include, subject to the limitations set forth
                  herein, any legal or other fees or expenses reasonably
                  incurred by such party in connection with any investigation or
                  proceeding.

                              (gg) The Company and the Holder agree that it
                  would not be just and equitable if contribution pursuant to
                  clause (ff) were determined by pro rata allocation or by any
                  other method of allocation that does not take account of the
                  equitable considerations referred to in the immediately
                  preceding paragraph. Notwithstanding any other provision
                  hereof, in no event shall the contribution obligation of the
                  Holder be greater in amount than the excess of (A) the dollar
                  amount of net proceeds received by the Holder upon the sale of
                  the securities giving rise to such contribution obligation
                  over (B) the dollar amount of any damages that the Holder has


                                 Page 53 of 149
<PAGE>

                  otherwise been required to pay by reason of the untrue or
                  alleged untrue statement or omission or alleged omission
                  giving rise to such obligation. No person guilty of fraudulent
                  misrepresentation (within the meaning of Section 11(f) of the
                  Securities Act) shall be entitled to contribution from any
                  person who was not guilty of such fraudulent
                  misrepresentation.

                              (hh) Neither the filing of the Registration
                  Statement by the Company pursuant to this Agreement nor the
                  making of any request for prospectuses by the Holder shall
                  impose upon the Holder any obligation to convert his, her or
                  its Debentures or to sell his, her or its Registrable
                  Securities.

                              (ii) The Holder, upon receipt of notice from the
                  Company that an event has occurred which requires a
                  post-effective amendment to the Registration Statement or a
                  supplement to the prospectus included therein, shall promptly
                  discontinue the sale of his, her or its Registrable Securities
                  until the Holder receives a copy of a supplemented or amended
                  prospectus from the Company, which the Company shall provide
                  as soon as practicable after such notice.

                        (C) In the event (a) the Registration Statement is not
            filed by the Company with the SEC on or prior to October 27, 1997,
            or (b) the Registration Statement has not been declared effective by
            the SEC on or prior to January 25, 1998, the annual interest rate on
            the Debentures shall be the rate per annum ("Default Rate") which is
            13% increased by one and one-half percent (1-1/2%) per annum for the
            first three (3) months immediately following the expiration of such
            ninety (90) day period or one hundred eighty (180) day period, as
            the case may be, and by an additional one-half of one percent (1/2%)
            per annum at the beginning of each subsequent thirty (30) day period
            thereafter, until such time as the requirements of clause (a) or (b)
            above, as the case may be, have been satisfied, at which time all
            increases in the interest rate borne by the Debentures resulting
            from the operation of this sentence shall terminate and the interest
            rate borne by the Debentures shall revert to the rate that otherwise
            would be in effect but for the operation of this sentence; provided,
            however, that in no event shall the interest rate borne by the
            Debentures exceed seventeen percent (17%) per annum pursuant to this
            sentence.

      7.    Covenants.

            (a) Affirmative Covenants: The Company will, and with respect to the
agreements set forth in subsections (i) through (viii) hereof, will cause each
subsidiary to:

                  (i) with respect to its properties, assets and business,
      maintain insurance against loss or damage, to the extent that property,
      assets and businesses of similar character are usually so insured by
      companies similarly situated and operating like properties, assets or
      businesses with responsible insurance companies satisfactory to the
      Majority Holders said insurance to indicate the Agent (as defined in the
      Security Agreement) as an additional insured;


                                 Page 54 of 149
<PAGE>

                  (ii) duly pay and discharge all taxes or other claims which
      might become a lien upon any of its properties except to the extent that
      such items are being in good faith appropriately contested;

                  (iii) maintain, preserve and keep its properties in good
      repair, working order and condition, and make all reasonable repairs,
      replacements, additions, betterments and improvements thereto;

                  (iv) conduct its business in substantially the same manner and
      in substantially the same fields as such business is now carried on and
      conducted;

                  (v) comply with all statutes, rules and regulations and
      maintain its corporate existence;

                  (vi) provide the Holder with the following financial
      information:

                        (A) annually, as soon as available, but in any event
            within one hundred twenty (120) days after the last day of each
            fiscal year, audited financial statements, including balance sheets
            as of the last day of the fiscal year and statements of income and
            retained earnings and changes in financial condition for such fiscal
            year each prepared in accordance with generally accepted accounting
            principles, consistently applied ("GAAP") for the period and prior
            periods by independent Certified Public Accountants satisfactory to
            the Majority Holders;

                        (B) as soon as available, but in any event within
            forty-five (45) days after the end of each fiscal quarter,
            internally prepared financial statements of the Company each
            prepared in accordance with GAAP and jobs-in-progress reports for
            said period and prior periods;

                        (C) within a reasonable time after a written request
            therefor, such other financial data or information as the Holder may
            reasonably request from time to time;

                        (D) at the same time as it delivers the financial
            statements required under the provisions of subsections (A) and (B)
            hereof, a certificate signed by the president or the chief
            financial, or accounting, officer of the Company, to the effect that
            no Event of Default hereunder or material default under any other
            agreement to which the Company is a party or by which it is bound,
            or by which any of its properties or assets may be affected, and no
            event which, with the giving of notice or the lapse of time, or
            both, would constitute such an Event of Default, has occurred;

                        (E) on a monthly basis, no later than the tenth (10th)
            day after each such month, backlog reports and accounts receivable
            agings of the Company;

                  (vii) permit the Holder to make or cause to be made,
      inspections and audits of any books, records and papers of the Company and
      of any parent or


                                 Page 55 of 149
<PAGE>

      subsidiary thereof and to make extracts therefrom at all such reasonable
      times and as often as the Holder may reasonably require;

                  (viii) immediately give notice to the Holder that an Event of
      Default has occurred or that an event which, with the giving of notice or
      lapse of time, or both, would constitute an Event of Default, has occurred
      and specifying the action which the Company has taken and proposes to take
      with respect thereto.

            (b) Financial Covenants:

                  (i) At the end of each fiscal quarter, the Company shall
maintain a Tangible Net Worth of (-3,042,322) or greater (as calculated in
accordance with GAAP). For purposes hereof "Tangible Net Worth" shall mean, at
any date, (i) the net book value of assets (other than patents, patent rights,
trademarks, trade names, franchises, copyrights, licenses, permits, goodwill and
other intangible assets classified as such in accordance with GAAP) after all
appropriate adjustments in accordance with GAAP (including, without limitation,
reserves for doubtful receivables, obsolescence, depreciation and amortization)
plus (ii) subordinated indebtedness, in each case computed in accordance with
GAAP; and

                  (ii) At the end of each fiscal quarter, the Company shall
report a net income (gross income less taxes and extraordinary items) of not
less than $1.00.

            (c) Negative Covenants: The Company will not, and will not permit
any subsidiary to:

                  (i) create, incur, assume or suffer to exist any liability for
      borrowed money, except (A) indebtedness to the Bank or any other financial
      institution constituting "Senior Debt" hereunder; (B) indebtedness
      outstanding on the date hereof; (C) indebtedness represented by the
      Company's 13% Senior Subordinated Interest Note (the "Note") (and any
      replacement Note or Notes issued upon transfer or exchange of the Note),
      (D) indebtedness represented by the Debentures (and any replacement
      Debenture or Debentures issued upon transfer or exchange of the
      Debentures); (E) indebtedness represented by the Accrued Interest
      Debentures (and any replacement Accrued Interest Debenture or Accrued
      Interest Debentures issued upon transfer or exchange of the Accrued
      Interest Debentures); (F) indebtedness represented by the Class B
      Debentures (and any replacement Class B Debenture or Class B Debentures
      issued upon transfer or exchange of the Class B Debentures); (G)
      indebtedness represented by the Class B Accrued Interest Debentures (and
      any replacement Class B Accrued Interest Debenture or Class B Accrued
      Interest Debentures issued upon transfer or exchange of the Class B
      Accrued Interest Debentures); and (H) other indebtedness for borrowed
      money (whether or not constituting a refinancing of existing indebtedness)
      so long as (x) such indebtedness is not secured by collateral securing
      repayment of the Debentures, (y) such indebtedness contains provisions
      reasonably satisfactory to the Majority Holders subordinating the payment
      of principal and interest thereon to the prior payment of principal and
      interest on the Debentures, and (z) the incurrence of which will not cause
      an Event of Default, or an event which with notice or the lapse of time or
      both would constitute an Event of Default, hereunder (collectively,
      "Permitted Indebtedness");


                                 Page 56 of 149
<PAGE>

                  (ii) create, incur, assume or suffer to exist, any mortgage,
      pledge, lien or encumbrance of or upon or security interest in, any of its
      property or assets now owned or hereafter acquired except (A) mortgages,
      liens, pledges and security interests securing Permitted Indebtedness; (B)
      other liens, charges and encumbrances incidental to the conduct of its
      business or the ownership of its property and assets which are not
      incurred in connection with the borrowing of money or the obtaining of
      advances or credit and which do not materially impair the use thereof in
      the operation of its business; (C) liens for taxes or other governmental
      charges which are not delinquent or which are being contested in good
      faith and for which a reserve shall have been established in accordance
      with GAAP; (D) liens granted to secure purchase money financing of
      equipment, provided such liens are limited to the equipment financed; and
      (E) liens granted to refinance unencumbered equipment provided such liens
      are limited to the equipment refinanced and the incurrence of which will
      not cause a default hereunder or in any Senior Debt;

                  (iii) assume, endorse, be or become liable for or guarantee
      the obligations of any other person except by the endorsement of
      negotiable instruments for deposit or collection in the ordinary course of
      business;

                  (iv) (A) terminate any pension plan so as to result in any
      material liability to The Pension Benefit Guaranty Corporation established
      pursuant to Subtitle A of Title IV of ERISA (the "PBGC"), (B) engage in or
      permit any person to engage in any "prohibited transaction" (as defined in
      Section 406 of ERISA or Section 4975 of the Internal Revenue Code of 1986,
      as amended) involving any pension plan which would subject the Company to
      any material tax, penalty or other liability, (C) incur or suffer to exist
      any material "accumulated funding deficiency" (as defined in Section 302
      of ERISA), whether or not waived, involving any pension plan, or (D) allow
      or suffer to exist any event or condition, which presents a material risk
      of incurring a material liability to the PBGC by reason of termination of
      any pension plan;

                  (v) amend, supplement or modify the terms of the Subject
      Securities or increase the outstanding amount of any Subject Securities
      (excluding awards granted under the Plan or under an incentive
      compensation plan or arrangement approved by the Company's Board of
      Directors or by the Compensation Committee of the Company's Board of
      Directors) without the prior consent of the Majority Holders;

                  (vi) enter into any merger or consolidation unless the Company
      shall be the surviving entity in any such merger or consolidation, and
      after giving effect to the transaction no Event of Default and no event
      which with the giving of notice or passage of time or both would
      constitute an Event of Default shall have occurred and be continuing, or
      liquidate, wind-up or dissolve itself or sell, transfer or lease or
      otherwise dispose of all or any substantial part of its assets;

                  (vii) lend or advance money, credit or property to or invest
      in (by capital contribution, loan, purchase or otherwise) any firm,
      corporation, or other person except (A) investments in United States
      Government obligations and certificates of deposit of any bank institution
      with combined capital and surplus of at least $200,000,000, (B) trade
      credit, (C) security deposits, or acquire or otherwise cause any other
      entity to become a subsidiary of the Company (as used herein the term
      "subsidiary"


                                 Page 57 of 149
<PAGE>

      means any corporation or other organization, whether incorporated or
      unincorporated, of which the Company or any other subsidiary of the
      Company beneficially owns a majority of the voting or economic interests),
      (D) loans made to Murray H. Feigenbaum and Jerome Deutsch in the aggregate
      principal amount of $162,950 existing on the date hereof, and (E) loans
      made to Norman M. Phipps and Michael Gaffney in the aggregate amount of
      $675,000 existing on the date hereof;

                  (viii) declare or pay any dividends or distributions on
      account of its capital stock or purchase, redeem, retire or otherwise
      acquire any of its capital stock or any securities convertible into,
      exchangeable for, or giving any person the right to acquire or otherwise
      subscribe for, any shares of the Company's capital stock; provided,
      however, that so long as no Event of Default or event which, with the
      giving of notice, the lapse of time, or both would constitute an Event of
      Default hereunder has occurred and is continuing, the Company may pay
      regular quarterly dividends on the Preferred Stock in accordance with the
      terms thereof; or

                  (ix) engage in any transaction with any person or entity who
      directly or indirectly, through one or more intermediaries, controls, is
      controlled by, or is under common control with, the Company (an
      "Affiliate"), other than director and compensation arrangements with
      Affiliates serving as officers and/or directors of the Company approved by
      the Company's Board of Directors and other than transactions with
      Affiliates entered into in the ordinary course of business on terms which
      are at least as favorable to the Company as those available from unrelated
      third parties. As used herein, the term "control" means the possession,
      directly or indirectly, of the power to direct or cause the direction of
      the management and policies of the Company, whether through the ownership
      of voting securities, by contract or otherwise, and the terms "controlled"
      and "controlling" have meanings correlative thereto.

      8.    Events of Default.

            (a) Definition. For the purposes of this Debenture, an Event of
Default hereunder will be deemed to have occurred if:

                  (i) the Company fails to pay the principal amount of this
      Debenture when due (whether upon the Due Date, upon acceleration or
      otherwise), whether or not such payment is prohibited by paragraph 4
      hereof;

                  (ii) the Company fails to pay any interest, premium or penalty
      on this Debenture when due and such failure has continued for a period of
      ten (10) days;

                  (iii) the Company fails to perform or observe the provisions
      set forth in Paragraphs 7(b) or 7(c) hereof;

                  (iv) the Company fails to perform or observe any provision
      contained in this Debenture or the Security Agreement (other than those
      specifically covered by the other provisions of this paragraph 8(a)) and,
      if such failure is capable of being cured, such failure continues for a
      period of 30 days after the Company's receipt of written notice thereof;


                                 Page 58 of 149
<PAGE>

                  (v) the Company shall have failed to pay when due any amount
      due and owing under any indebtedness of the Company for borrowed money or
      any other default or event of default shall have occurred (and shall have
      continued beyond the expiration of any applicable grace period) under any
      indebtedness of the Company for borrowed money which would permit the
      holder thereof to accelerate the maturity thereof or there shall have been
      an acceleration of the stated maturity of any indebtedness of the Company
      for borrowed money;

                  (vi) the Security Agreement shall at any time after its
      execution and delivery and for any reason cease to constitute a valid and
      perfected lien and security interest in and to the Collateral (as defined
      therein) or the Company shall take any position inconsistent therewith or
      any of the provisions of the Security Agreement that permit the Holder to
      exercise its remedies thereunder cease to be in full force and effect;

                  (vii) the Company makes an assignment for the benefit of
      creditors or admits in writing its inability to pay its debts generally as
      they become due; or an order, judgment or decree is entered adjudicating
      the Company as bankrupt or insolvent; or any order for relief with respect
      to the Company is entered under the Federal Bankruptcy Code; or the
      Company petitions or applies to any tribunal for the appointment of a
      custodian, trustee, receiver or liquidator of the Company or of any
      substantial part of the assets of the Company, or commences any proceeding
      relating to the Company under any bankruptcy, reorganization, arrangement,
      insolvency, readjustment of debt, dissolution or liquidation law of any
      jurisdiction ("Insolvency Event or Proceeding"); or any such petition or
      application is filed, or any such proceeding is commenced, against the
      Company and either (y) the Company by any act indicates its approval
      thereof, consents thereto or acquiescence therein or (z) such petition
      application or proceeding is not dismissed within 60 days;

                  (viii) a final judgment which in the aggregate with other
      outstanding final judgments against the Company exceeds $250,000 shall be
      rendered against the Company and within 90 days after entry thereof, such
      judgment is not discharged or execution thereof stayed pending appeal, or
      within 90 days after the expiration of such stay, such judgment is not
      discharged;

                  (ix) any representation or warranty made by the Company in the
      Purchase Agreement, dated July 29, 1997 between the Company and the
      original Holder of this Debenture, the Security Documents (as defined in
      such Purchase Agreement), or any other certificate or instrument delivered
      in connection therewith shall have been untrue in any material respect
      when made; or

                  (x) the Registration Statement shall not have become effective
      on or prior to April 25, 1998.

            (b)   Consequences of Events of Default.

                  (i) If any Event of Default (other than the type described in
      subparagraph 8(a)(vii) above) has occurred, the Holder or Holders of
      Debentures representing a majority of the aggregate principal amount of
      Debentures then outstanding (the "Majority Holders") may demand (by
      written notice delivered to the Company)


                                 Page 59 of 149
<PAGE>

      immediate payment of all or any portion of the outstanding principal
      amount of the Debentures owed by such Holder or Holders. If such Majority
      Holders demand immediate payment of all or any portion of such Holder's or
      Holders' Debentures, the Company will, to the extent permitted under the
      provisions of paragraph 4 hereof, immediately pay to such Holder or
      Holders the principal amount of the Debentures requested to be paid (plus
      accrued interest hereon). If an Event of Default of the type described in
      subparagraph 8(a)(vii) above has occurred, then all of the outstanding
      principal amount of the Debentures shall automatically be immediately due
      and payable without any action on the part of any Holders of the
      Debentures.

                  (ii) If an Event of Default has occurred, each Holder of the
      Debentures will also have any other rights which such Holder may have
      pursuant to applicable law, in each case provided such rights are
      consistent with the provisions of paragraph 4 hereof.

      9.    Amendment and Waiver. Except as otherwise expressly provided herein,
the provisions of this Debenture may be amended and the Company may take any
action herein prohibited, or omit to perform any act herein required to be
performed by it, only if the Company has obtained the written consent of the
Majority Holders, provided, however, neither the interest rate or principal
amounts payable under the Debentures, the dates on which interest or principal
under the Debentures is due nor the obligations to make payments on the
Debentures on a pro rata basis shall be amended without the prior written
consent of each Holder affected thereby, and further provided, however, that any
amendment or waiver which might in any way adversely affect the holders of
Senior Debt, including, but not limited to, any amendment or waiver affecting
the provisions of paragraph 4 or this paragraph 9 shall require the prior
written consent of each holder of Senior Debt. Any amendment or waiver effected
in accordance with this paragraph 9 shall be binding upon each Holder of this
Debenture and each future Holder of this Debenture.

      10.   Cancellation. After all principal and accrued interest at any time
owed on this Debenture has been paid in full, this Debenture will be surrendered
to the Company for cancellation and will not be reissued.

      11.   Place of Payment. Payments of principal and interest are to be
delivered to the Holder at the office of the Company, 50 Orville Drive, Bohemia,
New York 11716, or to such other address or to the attention of such other
Person as specified by prior written notice to the Company.

      12.   Waiver of Presentment, Demand and Dishonor. The Company hereby
waives presentment for payment, protest, demand, notice of protest, notice of
non-payment and diligence with respect to this Debenture, and waives and
renounces all rights to the benefit of any statute of limitations or any
moratorium, appraisement, exemption or homestead now provided or that hereafter
may be provided by any federal or applicable state statute, including but not
limited to exemptions provided by or allowed under the Federal Bankruptcy Code,
both as to itself and as to all of its property, whether real or personal,
against the enforcement and collection of the obligations evidenced by this
Debenture and any and all extensions, renewals and modifications hereof.


                                 Page 60 of 149
<PAGE>

            No failure on the part of the Holder hereof or of any other
Debentures to exercise any right or remedy hereunder with respect to the
Company, whether before or after the happening of an Event of Default, shall
constitute a waiver of any future Event of Default or of any other Event of
Default. No failure to accelerate the debt of the Company evidenced hereby by
reason of an Event of Default or indulgence granted from time to time shall be
construed to be a waiver of the right to insist upon prompt payment thereafter;
or shall be deemed to be a novation of this Debenture or a reinstatement of such
debt evidenced hereby or a waiver of such right of acceleration or any other
right, or be construed so as to preclude the exercise of any right the Holder
may have, whether by the laws of the state governing this Debenture, by
agreement or otherwise; and the Company hereby expressly waives the benefit of
any statute or rule of law or equity that would produce a result contrary to or
in conflict with the foregoing.

      13.   Usury. The Holder and the Company intend that the obligations
evidenced by this Debenture conform strictly to the applicable usury laws from
time to time in force. All agreements between the Company and the Holder,
whether now existing or hereafter arising and whether oral or written, hereby
are expressly limited so that in no contingency or event whatsoever, whether by
acceleration of maturity hereof or otherwise, shall the amount paid or agreed to
be paid to the Holder, or collected by the Holder, by or on behalf of the
Company for the use, forbearance or detention of the money to be loaned to the
Company hereunder or otherwise, or for the payment or performance of any
covenant or obligation contained herein of the Company to the Holder, or in any
other document evidencing, securing or pertaining to such indebtedness evidenced
hereby, exceed the maximum amount permissible under applicable usury law. If
under any circumstances whatsoever fulfillment of any provision hereof or any
other document, at the time performance of such provisions shall be due, shall
involve transcending the limit of validity prescribed by law, then, ipso facto,
the obligation to be fulfilled shall be reduced to the limit of such validity;
and if under any circumstances the Holder ever shall receive from or on behalf
of the Company an amount deemed interest, by applicable law, which would exceed
the highest lawful rate, such amount that would be excessive interest under
applicable usury laws shall be applied to the reduction of the Company's
principal amount owing hereunder and not to the payment of interest, or if such
excessive interest exceeds the unpaid balance of principal and such other
indebtedness, the excess shall be deemed to have been a payment made by mistake
and shall be refunded to the Company or to any other person making such payment
on the Company's behalf.

      14.   Governing Law. The validity, construction and interpretation of this
Debenture will be governed by the internal laws, but not the law of conflicts
and choices of law, of the State of New York.

      IN WITNESS WHEREOF, the Company has executed and delivered this Class A
13% Convertible Senior Subordinated Pay-in-Kind Debenture this 29th day of July,
1997.

                                        LOGIMETRICS, INC.


                                        By:
                                           -------------------------------------
                                        Name: Charles S. Brand
                                        Title: Chief Executive Officer


                                 Page 61 of 149
<PAGE>

                                    EXHIBIT A

                               ELECTION TO CONVERT

                  (All capitalized terms used and not otherwise
                     defined herein shall have the meanings
             assigned to them in the Class A 13% Convertible Senior
                      Subordinated Pay-in-Kind Debentures)

LogiMetrics, Inc.
50 Orville Drive
Bohemia, New York 11716

TO WHOM IT MAY CONCERN:

      The undersigned registered owner of the attached Class A 13% Convertible
Senior Subordinated Pay-in-Kind Debenture hereby irrevocably exercises the
option to convert such Debenture into Common Stock of LogiMetrics, Inc. in
accordance with the terms thereof, and directs that any shares issuable and
deliverable upon the conversion be issued in the name of and delivered to the
undersigned.


- --------------------------------------------------------------------------------
                            [Name of Debentureholder]


Dated:               , 199
      ---------------     -

                                 Page 62 of 149


                                    EXHIBIT 5

                            FORM OF CLASS C DEBENTURE


                                 Page 63 of 149
<PAGE>

                                                                       EXHIBIT 5

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND CANNOT BE SOLD OR TRANSFERRED
UNLESS AND UNTIL THEY ARE SO REGISTERED OR UNLESS AN EXEMPTION UNDER SUCH ACT OR
LAWS IS AVAILABLE. THE TRANSFERABILITY OF THESE SECURITIES IS FURTHER SUBJECT TO
THE PROVISIONS OF A PURCHASE AGREEMENT DATED AS OF OCTOBER 21, 1998 AMONG THE
COMPANY AND THE PURCHASERS NAMED THEREIN.

                         CLASS C 13% CONVERTIBLE SENIOR
                         SUBORDINATED DEBENTURE DUE 1999

                                                                October 21, 1998

      LOGIMETRICS, INC., a Delaware corporation (the "Company"), hereby promises
to pay to the order of (together with its, his or her successors and assigns,
the "Holder") the principal amount of in lawful money of the United States,
together with interest thereon calculated from the date hereof and payable in
accordance with the provisions of this debenture ("Debenture").

      By accepting this Debenture, the Holder agrees that the obligations of the
Company to the Holder under this Debenture shall be subordinated only to the
Senior Debt (as hereinafter defined) of the Company, all upon the terms set
forth in paragraph 4 hereof.

      This Debenture may be surrendered for transfer or exchange by the Holder
hereof upon surrender of this Debenture, together with a properly completed bond
power or other instrument of transfer, and any required signature guarantees, at
the office of the Company set forth in Section 11 hereof. Upon proper surrender,
the Company shall issue one or more replacement Debentures of like tenor
registered in the names and in the denominations requested by the surrendering
Holder and dated the date of issuance thereof; provided, however, that (i)
appropriate adjustments shall be made to reflect the date of issue and principal
amount of each such replacement Debenture, (ii) the aggregate principal amount
of all Debentures shall be limited to $2,666,667, and (iii) no Debenture shall
be issued in a principal amount of less than $5,000 unless in connection with a
transfer resulting from the complete liquidation of the original Holder of this
Debenture. All Debentures shall rank pari passu.

      1.    Payment of Interest. Interest will accrue from the date hereof at
the rate of thirteen percent (13%) per annum on the unpaid principal amount of
this Debenture outstanding from time to time on the basis of a 360-day year for
the actual number of days elapsed. Subject to paragraph 4 hereof, the Company
will pay to the Holder all accrued and unpaid interest on this Debenture on
January 15, 1999 and quarterly thereafter, in arrears, on the 15th day of
January, the 15th day of April, the 15th day of July and the 15th day of October
(each, an "Interest Payment Date") to and including the earlier to occur of the
Conversion Date (hereinafter defined) or the Due Date (hereinafter defined).
Interest will accrue at the greater of the Default Rate (hereinafter defined)
and the rate of fifteen percent (15%) per annum on any principal payment past
due under this Debenture and, unless prohibited under applicable law (and if so
prohibited


                                 Page 64 of 149
<PAGE>

then only to the extent not so prohibited), on any interest which has not been
paid on the date on which it is due and payable (without giving effect to any
applicable grace periods or paragraph 4 hereof) until such time as payment
therefor is actually delivered to the Holder.

      2.    Payment of Principal on Debenture.

            (a) Scheduled Payments. The Company will repay the principal amount
of this Debenture on September 30, 1999 ("Due Date").

            (b) Optional Prepayment. The Company may at any time hereafter
prepay, without premium or penalty, all (but not less than all) of the
outstanding principal amount of the Debentures, together with interest accrued
on such prepaid amount to the date of payment.

            (c) Mandatory Prepayment. The Company shall prepay, without premium
or penalty, all (but not less than all) of the outstanding principal amount of
the Debentures, together with interest accrued on such prepaid amount to the
date of prepayment within forty (40) days after the consummation of a Qualifying
Offering. As used herein, "Qualifying Offering" means the public or private sale
by the Company of debt or equity securities resulting in net proceeds to the
Company (after the deduction for all necessary and customary expenses payable by
the Company in connection therewith) of at least $15 million.

            (d) Notice of Prepayment. The Company will give written notice of
its election to prepay this Debenture to the Holder in person or by registered
or certified mail, return receipt requested, at least thirty (30) and not more
than forty-five (45) days prior to the date of prepayment. On the date of
prepayment specified in the Company's notice, the Company will deliver to the
Holder of this Debenture in person or by registered or certified mail, return
receipt requested, a cashier's or certified check for the entire outstanding
principal amount being prepaid, together with all accrued interest thereon
through the date of prepayment.

      3.    Intentionally Omitted.

      4.    Subordination. The Company's payment, whether voluntary or
involuntary, whether in cash, property, securities or otherwise and whether by
application of offset or otherwise (hereinafter "Payment") of any of its
obligations under this Debenture shall be subject to the following restrictions:

            (a) Subordination to Senior Debt. Anything in this Debenture to the
contrary notwithstanding, the obligations of the Company in respect of the
principal of and interest (including any premium or penalty) on this Debenture
and any other amounts due under this Debenture (the "Subordinated Debt") shall
be subordinate and junior in right of payment, to the extent and in the manner
hereinafter set forth, to the Senior Debt. "Senior Debt", when used with respect
to the Company, means only the following (and no other indebtedness of any kind
or nature whatsoever): (i) the Company's indebtedness to North Fork Bank
("Bank") under (A) that certain $640,000.04 Restated and Amended Term Loan Note,
dated April 25, 1997, and (B) that certain $2,200,000 Modified Revolving Credit
Note, dated April 30, 1998, in each case, together with interest thereon and
(ii) renewals, extensions, refinancings, deferrals, restructurings, amendments,
modifications and waivers of the indebtedness described in clause (i) above;
provided, however, that the principal amount of the Senior Debt shall not exceed
$2.8 million.


                                 Page 65 of 149
<PAGE>

            (b) Default on Senior Debt. So long as the Senior Debt has not been
paid in full, if there shall occur a default in the payment when due of any
amount due and owing on account of Senior Debt (any of the foregoing being a
"Senior Debt Default") then, from and after the receipt of written notice
thereof from the holder of Senior Debt unless and until such Senior Debt Default
shall have been remedied or waived the Company will not make any Payment on any
Subordinated Debt, and the Holders of Subordinated Debt will not receive or
accept any direct or indirect Payment in respect thereof, and the Company may
not redeem or otherwise acquire any Subordinated Debt.

            (c) Changes in Senior Debt. Any holder of Senior Debt may, at any
time and from time to time, without the consent of, or notice to, the Holder and
without incurring responsibility to the Holder, and without impairing or
releasing the obligations of the Holder hereunder:

                  (i) Change the manner, place or terms of payment or change or
      extend the time of payment of or renew or alter the Senior Debt or any
      portion thereof; provided, however, that without the written consent of
      the Majority Holders (hereinafter defined) the principal amount of and
      interest rate applicable from time to time to Senior Debt may not be
      increased (other than pursuant to the terms of the Senior Debt as such
      terms existed on the date of issuance hereof);

                  (ii) Sell, exchange, release or otherwise deal with any
      collateral securing the Senior Debt or any other property by whomsoever at
      any time pledged or mortgaged to secure, or however securing, the Senior
      Debt or any portion thereof; and

                  (iii) Apply any sums by whomsoever paid or however released to
      the Senior Debt or any portion thereof.

            (d) Consent to Senior Debt. By acceptance of this Debenture, the
Holder hereby consents to the making of Senior Debt and hereby acknowledges that
each current and future holder of Senior Debt has relied, and in the future will
rely, upon the terms of this Debenture. The holders of Senior Debt shall have no
liability to the Holder and the Holder hereby waives any claim which it may have
now or hereafter against any holder of Senior Debt arising from any and all
actions which any holder of Senior Debt may take or omit to take in good faith
with regard to the Senior Debt or its rights or obligations hereunder.

            (e) Payments in Trust. Until the Senior Debt has been repaid in
full, in the event the Holder shall receive any Payment in contravention of the
provisions of this paragraph 4 including, Payments arising under the
subordination provisions of any other indebtedness of the Company, the Holder
shall hold all such Payments so received in trust for the holders of Senior Debt
and shall forthwith turn over all such Payments to the holders of Senior Debt in
the form received (except for the endorsement or assignment of the Holder as
necessary, without recourse or warranty) to be applied to payment of the Senior
Debt whether or not then due and payable. Any Payment so received in trust and
turned over to the holders of Senior Debt shall not be deemed a Payment in
satisfaction of the Subordinated Debt by the Company.

            (f) Payment in full of Senior Debt; Subrogation. If any Payment to
which a Holder of Subordinated Debt would otherwise have been entitled but for
the provisions of this paragraph 4 shall have been applied, pursuant to the
provisions of this paragraph 4, to the


                                 Page 66 of 149
<PAGE>

payment of Senior Debt, then and in such case, the Holder of the Subordinated
Debt (i) shall be entitled to receive from the holders of Senior Debt at the
time outstanding any payments or distributions received by such holders of
Senior Debt in excess of the amount sufficient to pay all Senior Debt in cash in
full (whether or not then due), and (ii) following payment of the Senior Debt in
full, shall be subrogated to any right of the holders of Senior Debt to receive
any and all further payments or distributions applicable to Senior Debt, until
all the Subordinated Debt shall have been paid in full. If the Holder of the
Subordinated Debt shall have been subrogated to the rights of the holders of
Senior Debt due to the operation of this paragraph 4(f), the Company agrees to
take all such reasonable actions as are requested by such Holders of the
Subordinated Debt in order to cause such Holders to be able to obtain payments
from the Company with respect to such subrogation rights as soon as possible.

            (g) No Impairment of the Company's Obligations. Nothing contained in
this paragraph 4, as between the Company and the Holder of this Debenture, shall
impair the obligation of the Company, which is absolute and unconditional, to
pay to the Holder the principal of and interest on this Debenture as and when
the same shall become due and payable in accordance with the terms hereof.

            (h) Advances in Reliance. The Holder of this Debenture, by its
acceptance hereof, agrees that each holder of Senior Debt has advanced funds or
may in the future advance funds in reliance upon the terms and conditions
hereof.

            (i) Non-Waiver of Rights. No right of any holder of Senior Debt to
enforce its right of subordination as herein provided shall at any time in any
way be prejudiced or impaired by any act or failure to act on the part of the
Company, or by any act or failure to act by any such holder, or by any
non-compliance by the Company with the terms, provisions and covenants of this
Debenture, regardless of any knowledge thereof any such holder may have or be
otherwise charged with.

            (j) Recaptured Payments. Any Payments received by a holder of Senior
Debt from the Company or the Holder which, in connection with an Insolvency
Event or Proceeding (hereinafter defined), is required to be remitted to the
payor or the bankrupt estate shall not be deemed a Payment to such holder of
Senior Debt for all purposes hereunder.

            (k) Right to Convert Unaffected. Nothing contained in this Section 4
shall be construed so as to limit or restrict the ability of the Holder to
convert this Debenture in accordance with the terms hereof.

      5.    Intentionally Omitted.

      6.    Conversion Rights.

            (a) From and after the earliest of (i) January 31, 1999, (ii) the
consummation of a Qualifying Offering, or (iii) the date of any repayment notice
given by the Company pursuant to Section 2(d) hereof, the Holder of this
Debenture shall have the right (the "Conversion Right"), exercisable at his, her
or its option at any time during which the principal amount of this Debenture is
outstanding, to convert this Debenture, but only in whole, into a number of
fully paid and non-assessable shares equal to (i) the result obtained by
dividing the stated principal amount of this Debenture by the conversion rate
established for any equity


                                 Page 67 of 149
<PAGE>

security issued in a Qualifying Offering, if this Debenture is converted on or
after the consummation of a Qualifying Offering, or (ii) if no Qualifying
Offering has occurred on or prior to such conversion, the result obtained by
dividing the stated principal amount of this Debenture by (X) $0.52 per share if
this Debenture is converted on or prior to January 31, 1999, (Y) $0.45 per share
if this Debenture is converted on or after February 1, 1999 and on or prior to
April 30, 1999, or (Z) $0.31 per share if this Debenture is converted on or
after May 1, 1999. The respective conversion prices set forth above shall be
subject to adjustment in certain circumstances as provided herein. The
conversion price in effect at the time of the conversion of this Debenture is
hereinafter referred to as the "Conversion Price." No fractional shares shall be
issuable upon the conversion of this Debenture. In lieu of any such fractional
share interest, upon conversion the Holder shall be entitled to a cash payment
equal to such fractional interest multiplied by the Conversion Price in effect
at the time of such conversion.

            (b) The Conversion Right is exercisable upon surrender of this
Debenture, together with a conversion notice, in the form attached hereto as
Exhibit A, duly executed and completed, evidencing the election of the Holder to
exercise the Conversion Right, at the Company's principal office at 50 Orville
Drive, Bohemia, New York 11716. The registered owner of this Debenture shall
become the record holder of the shares of Common Stock issuable upon conversion
as of the date of exercise of the Conversion Right (the "Conversion Date"). The
shares issued in connection with the Conversion Right shall be registered
initially in the name of the Holder, and delivered to the Holder no later than
two (2) business days after receipt of a properly completed conversion notice.
Upon conversion, the Company shall pay to the Holder accrued but unpaid interest
on this Debenture up to, but excluding, the Conversion Date.

            (c) In case, at any time or from time to time after the date of
issuance of this Debenture ("Issuance Date"), the Company shall issue or sell
shares of its Common Stock (other than any Common Stock issuable upon the
exercise or conversion of (i) the Debentures (and any replacement Debenture or
Debentures issued upon transfer or exchange of this Debenture), (ii) the
Company's Class A 13% Convertible Senior Subordinated Pay-in-Kind Debentures due
1999 (the "Class A Debentures") (and any replacement Class A Debenture or Class
A Debentures issued upon transfer or exchange of the Class A Debentures), (iii)
any additional securities issued in lieu of cash interest otherwise payable on
the Class A Debentures (the "Class A Accrued Interest Debentures") (and any
replacement Class A Accrued Interest Debenture or Class A Accrued Interest
Debentures issued upon transfer or exchange of the Class A Accrued Interest
Debentures), (iv) the Company's Amended and Restated Class B 13% Convertible
Senior Subordinated Pay-in-Kind Debentures due 1999 (the "Class B Debentures")
(and any replacement Class B Debenture or Class B Debentures issued upon
transfer or exchange of the Class B Debentures), (v) any additional securities
issued in lieu of cash interest otherwise payable on the Class B Debentures (the
"Class B Accrued Interest Debentures") (and any replacement Class B Accrued
Interest Debenture or Class B Accrued Interest Debentures issued upon transfer
or exchange of the Class B Accrued Interest Debentures), (vi) securities
outstanding on the date hereof, (vii) awards made from and after the Issuance
Date pursuant to the Company's Stock Compensation Program (the "Plan"), or
(viii) awards made from and after the Issuance Date pursuant to any incentive
compensation plan or arrangement approved by the Company's Board of Directors or
by the Compensation Committee of the Company's Board of Directors subject to an
aggregate limit of 2,000,000 shares of Common Stock for issuances pursuant to
clauses (vii) and (viii) (subject to adjustment in the circumstances set forth
in the Plan or such arrangements) (such securities, collectively, the "Subject
Securities") for a consideration per share less than the Conversion Price (the
"Trigger Price"), or, if a Pro Forma


                                 Page 68 of 149
<PAGE>

Adjusted Trigger Price (hereinafter defined) shall be in effect as provided
below in this paragraph (c), then less than such Pro Forma Adjusted Trigger
Price per share, then and in each such case the Holder of this Debenture, upon
the conversion hereof as provided in paragraph (a) hereof, shall be entitled to
receive, in lieu of the shares of Common Stock theretofore receivable upon the
conversion of this Debenture, a number of shares of Common Stock determined by
(a) dividing the Trigger Price by a Pro Forma Adjusted Trigger Price per share
to be computed as provided below in this paragraph (c), and (b) multiplying the
resulting quotient by the number of shares of Common Stock into which this
Debenture is then convertible. A Pro Forma Adjusted Trigger Price per share
shall be the price computed (to the nearest cent, a fraction of half cent or
more being considered a full cent):

            by dividing (i) the sum of (x) the result obtained by multiplying
            the number of shares of Common Stock of the Company outstanding
            immediately prior to such issue or sale by the Trigger Price (or, if
            a Pro Forma Adjusted Trigger Price shall be in effect, by such
            Price), and (y) the consideration, if any, received by the Company
            upon such issue or sale, by (ii) the number of shares of Common
            Stock of the Company outstanding immediately after such issue or
            sale.

For the purpose of this paragraph (c):

                  (i) In case the Company splits its Common Stock or shall
      declare any dividend, or make any other distribution, upon any stock of
      the Company of any class payable in Common Stock, or in any stock or other
      securities directly or indirectly convertible into or exchangeable for
      Common Stock (any such stock or other securities being hereinafter called
      "Convertible Securities"), such split, declaration or distribution shall
      be deemed to be an issue or sale (as of the record date for such split,
      dividend or other distribution), without consideration, of such Common
      Stock or such Convertible Securities, as the case may be.

                  (ii) In case the Company shall issue or sell any Convertible
      Securities other than the Subject Securities, there shall be determined
      the price per share for which Common Stock is issuable upon the conversion
      or exchange thereof, such determination to be made by dividing (a) the
      total amount received or receivable by the Company as consideration for
      the issue or sale of such Convertible Securities, plus the minimum
      aggregate amount of additional consideration, if any, payable to the
      Company upon the conversion or exchange thereof, by (b) the maximum number
      of shares of Common Stock of the Company issuable upon the conversion or
      exchange of all such Convertible Securities.

                  If the price per share so determined shall be less than the
      Trigger Price (or, if a Pro Forma Adjusted Trigger Price shall be in
      effect, less than such Price) as of the date of such issue or sale, then
      such issue or sale shall be deemed to be an issue or sale for cash (as of
      the date of issue or sale of such Convertible Securities) of such maximum
      number of shares of Common Stock at the price per share so determined,
      provided that, if such Convertible Securities shall by their terms provide
      for an increase or increases, with the passage of time, in the amount of
      additional consideration, if any, payable to the Company, or in the rate
      of exchange, upon the conversion or exchange


                                 Page 69 of 149
<PAGE>

      thereof, the Pro Forma Adjusted Trigger Price per share shall, forthwith
      upon any such increase becoming effective, be readjusted to reflect the
      same, and provided, further, that upon the expiration of such rights of
      conversion or exchange of such Convertible Securities, if any thereof
      shall not have been exercised, the Pro Forma Adjusted Trigger Price per
      share shall forthwith be readjusted and thereafter be the price which it
      would have been had an adjustment been made on the basis that the only
      shares of Common Stock so issued or sold were those issued or sold upon
      the conversion or exchange of such Convertible Securities, and that they
      were issued or sold for the consideration actually received by the Company
      upon such conversion or exchange, plus the consideration, if any, actually
      received by the Company for the issue or sale of all such Convertible
      Securities which shall have been converted or exchanged.

                  (iii) In case the Company shall grant any rights or options to
      subscribe for, purchase or otherwise acquire Common Stock of any class
      other than the Subject Securities, there shall be determined the price per
      share for which Common Stock is issuable upon the exercise of such rights
      or options, such determination to be made by dividing (a) the total
      amount, if any, received or receivable by the Company as consideration for
      the granting of such rights or options, plus the minimum aggregate amount
      of additional consideration, if any, payable to the Company upon the
      exercise of such rights or options, by (b) the maximum number of shares of
      Common Stock issuable upon the exercise of such rights or options.

                  If the price per share so determined shall be less than the
      Trigger Price (or, if a Pro Forma Adjusted Trigger Price shall be in
      effect, less than such Price) as of the date of such issue or sale, then
      the granting of such rights or options shall be deemed to be an issue or
      sale for cash (as of the date of the granting of such rights or options)
      of such maximum number of shares of Common Stock at the price per share so
      determined, provided that, if such rights or options shall by their terms
      provide for an increase or increases, with the passage of time, in the
      amount of additional consideration, if any, payable to the Company upon
      the exercise thereof, the Pro Forma Adjusted Trigger Price per share
      shall, forthwith upon any such increase becoming effective, be readjusted
      to reflect the same, and provided, further, that upon the expiration of
      such rights or options, if any thereof shall not have been exercised, the
      Pro Forma Adjusted Trigger Price per share shall forthwith be readjusted
      and thereafter be the price which it would have been had an adjustment
      been made on the basis that the only shares of Common Stock so issued or
      sold were those issued or sold upon the exercise of such rights or options
      and that they were issued or sold for the consideration actually received
      by the Company upon such exercise, plus the consideration, if any,
      actually received by the Company for the granting of all such rights or
      options, whether or not exercised.

                  (iv) In case the Company shall grant any rights or options to
      subscribe for, purchase or otherwise acquire Convertible Securities other
      than the Subject Securities, such Convertible Securities shall be deemed,
      for the purposes of subparagraph (iii) above, to have been issued or sold
      for the total amount received or receivable by the Company as
      consideration for the granting of such rights or options plus the minimum
      aggregate amount of additional consideration, if any, payable to the
      Company upon the exercise of such rights or options, provided that, upon
      the expiration of such rights or options, if any thereof shall not have
      been exercised, the Pro Forma Adjusted Trigger Price per share shall
      forthwith be readjusted and thereafter be the price which it would


                                 Page 70 of 149
<PAGE>

      have been had an adjustment been made upon the basis that the only
      Convertible Securities so issued or sold were those issued or sold upon
      the exercise of such rights or options and that they were issued or sold
      for the consideration actually received by the Company upon such exercise,
      plus the consideration, if any, actually received by the Company for the
      granting of all such rights or options, whether or not exercised.

                  (v) In case any shares of stock or other securities, other
      than Common Stock of the Company, shall at any time be receivable upon the
      conversion of this Debenture, and in case any additional shares of such
      stock or any additional such securities (or any stock or other securities
      convertible into or exchangeable for any such stock or securities) shall
      be issued or sold for a consideration per share such as to dilute the
      purchase rights evidenced by this Debenture, then and in each such case
      the Pro Forma Adjusted Trigger Price per share shall forthwith be
      adjusted, substantially in the manner provided for above in this paragraph
      (c), so as to protect the Holder of this Debenture against the effect of
      such dilution.

                  (vi) In case any shares of Common Stock or Convertible
      Securities or any rights or options to subscribe for, purchase or
      otherwise acquire any Common Stock or Convertible Securities shall be
      issued or sold for cash, the consideration received therefor shall be
      deemed to be the amount received by the Company therefor, after deducting
      any expenses incurred and any underwriting or similar commissions,
      compensation or concessions paid or allowed by the Company in connection
      with such issue or sale.

                  (vii) In case any shares of Common Stock or Convertible
      Securities or any rights or options to subscribe for, purchase or
      otherwise acquire any Common Stock or Convertible Securities shall be
      issued or sold for a consideration other than cash (or a consideration
      which includes cash and other assets) then, for the purpose of this
      paragraph (c), the Board of Directors of the Company shall promptly
      determine the fair value of such consideration, and such Common Stock,
      Convertible Securities, rights or options shall be deemed to have been
      issued or sold on the date of such determination in good faith. Such value
      shall not be more than the amount at which such consideration is recorded
      in the books of the Company for accounting purposes except in the case of
      an acquisition accounted for on a pooling of interest basis. In case any
      Common Stock or Convertible Securities or any rights or options to
      subscribe for, purchase or otherwise acquire any Common Stock or
      Convertible Securities shall be issued or sold together with other stock
      or securities or other assets of the Company for a consideration which
      covers both, the Board of Directors of the Company shall promptly
      determine in good faith what part of the consideration so received is to
      be deemed to be the consideration for the issue or sale of such Common
      Stock or Convertible Securities or such rights or options.

                  The Company covenants and agrees that, should any
      determination of fair value of consideration or of allocation of
      consideration be made by the Board of Directors of the Company, pursuant
      to this subparagraph (vii), it will, not less than seven (7) days after
      any and each such determination, deliver to the Holder of this Debenture a
      certificate signed by the President or a Vice President and the Treasurer
      or an Assistant Treasurer of the Company reciting such value as thus
      determined and setting forth the nature of the transaction for which such
      determination was required to be made, the


                                 Page 71 of 149
<PAGE>

      nature of any consideration, other than cash, for which Common Stock,
      Convertible Securities, rights or options have been or are to be issued,
      the basis for its valuation, the number of shares of Common Stock which
      have been or are to be issued, and a description of any Convertible
      Securities, rights or options which have been or are to be issued,
      including their number, amount and terms.

                  (viii) In case the Company shall take a record of the holders
      of shares of its stock of any class for the purpose of entitling them (a)
      to receive a dividend or a distribution payable in Common Stock or in
      Convertible Securities, or (b) to subscribe for, purchase or otherwise
      acquire Common Stock or Convertible Securities, then such record date
      shall be deemed to be the date of the issue or sale of the Common Stock
      issued or sold or deemed to have been issued or sold upon the declaration
      of such dividend or the making of such other distribution, or the date of
      the granting of such rights of subscription, purchase or other
      acquisition, as the case may be.

                  (ix) The number of shares of Common Stock outstanding at any
      given time shall include shares issuable in respect of scrip certificates
      issued in lieu of fractions of shares of Common Stock, but shall exclude
      shares in the treasury of the Company.

                  (x) Following each computation or readjustment of a Pro Forma
      Adjusted Trigger Price as provided in this paragraph (c), the newly
      computed or adjusted Pro Forma Adjusted Trigger Price shall remain in
      effect until a further computation or readjustment thereof is required by
      this paragraph (c).

                  (xi) In case at any time or from time to time after the
      Issuance Date the holders of the Common Stock of the Company of any class
      (or any other shares of stock or other securities at the time receivable
      upon the exercise of this Debenture) shall have received, or, on or after
      the record date fixed for the determination of eligible stockholders,
      shall have become entitled to receive:

                        (A) other or additional stock or other securities or
            property (other than cash) by way of dividend;

                        (B) any cash paid or payable out of capital or paid-in
            surplus or surplus created as a result of a revaluation of property
            by way of dividend; or

                        (C) other or additional (or less) stock or other
            securities or property (including cash) by way of stock-split,
            spin-off, split-off, split-up, reclassification, combination of
            shares or similar corporate rearrangement;

(other than additional shares of Common Stock issued to holders of Common Stock
as a stock dividend or stock-split, adjustments in respect of which shall be
covered by the provisions of this paragraph (c)), then in each case the Holder
of this Debenture, upon the conversion hereof as provided in paragraph (a)
hereof, shall be entitled to receive, in lieu of, or in addition to, as the case
may be, the shares theretofore receivable upon the conversion of this Debenture,
the amount of stock or other securities or property (including cash in the cases
referred to in clauses (B) and (C) above) which such Holder would hold on the
date of such exercise if, on the Issuance Date, he, she or it had been the
holder of record of the number of shares of Common Stock of the


                                 Page 72 of 149
<PAGE>

Company into which this Debenture is convertible and had thereafter, during the
period from the Issuance Date to and including the date of such conversion,
retained such shares and/or all other or additional (or less) stock or other
securities or property (including cash in the cases referred to in clauses (B)
and (C) above) receivable by him, her or it as aforesaid during such period,
giving effect to all adjustments called for during such period by paragraph (c)
and subparagraph (xii) hereof.

                  (xii) In case of any reorganization of the Company (or any
      other corporation the stock or other securities of which are at the time
      deliverable on the conversion of this Debenture) after the date hereof, or
      in case, after such date, the Company (or any such other corporation)
      shall consolidate with or merge into another corporation or convey all or
      substantially all its assets to another corporation, then and in each such
      case the Holder of this Debenture, upon the conversion hereof as provided
      in paragraph (a) hereof, at any time after the consummation of such
      reorganization, consolidation, merger or conveyance, shall be entitled to
      receive the stock or other securities or property to which such Holder
      would have been entitled upon such consummation if such Holder had
      converted this Debenture immediately prior thereto, all subject to further
      adjustments as provided for herein; in each such case, the terms of this
      Debenture shall be applicable to the shares of stock or other securities
      or property receivable upon the conversion of this Debenture after such
      consummation.

                  (xiii) The Company will not, by amendment of its charter or
      through reorganization, consolidation, merger, dissolution, sale of assets
      or any other voluntary action, avoid or seek to avoid the observance or
      performance of any of the terms of this Debenture, but will at all times
      in good faith assist in the carrying out of all such terms and in the
      taking of all such action as may be necessary or appropriate in order to
      protect the rights of the Holder hereof against dilution or other
      impairment. Without limiting the generality of the foregoing, the Company
      will not increase the par value of any shares of stock receivable upon the
      conversion of this Debenture above the amount payable therefor upon such
      exercise, and at all times will take all such action as may be necessary
      or appropriate in order that the Company may validly and legally issue
      fully paid and non-assessable stock upon the conversion of this Debenture.

                  (xiv) In each case of an adjustment in the number of shares of
      Common Stock or other stock, securities or property receivable on the
      conversion of this Debenture, at the request of the Holder of this
      Debenture the Company at its expense shall promptly cause independent
      public accountants of recognized standing, selected by the Company, to
      compute such adjustment in accordance with the terms of this Debenture and
      prepare a certificate setting forth such adjustment and showing in detail
      the facts upon which such adjustment is based, including a statement of
      (A) the consideration received or to be received by the Company for any
      additional shares issued or sold or deemed to have been issued or sold,
      (B) the number of shares of Common Stock outstanding or deemed to be
      outstanding and (C) the Pro Forma Adjusted Trigger Price. The Company will
      forthwith mail a copy of each such certificate to the Holder of this
      Debenture.

                  (xv) In case:


                                 Page 73 of 149
<PAGE>

                        (A) the Company shall take a record of the holders of
            its Common Stock (or other stock or securities at the time
            deliverable upon the conversion of this Debenture) for the purpose
            of entitling or enabling them to receive any dividend (other than a
            cash or stock dividend at the same rate as the rate of the last cash
            or stock dividend theretofore paid) or other distribution, or to
            exercise any preemptive right pursuant to the Company's charter, or
            to receive any right to subscribe for or purchase any shares of
            stock of any class or any other securities, or to receive any other
            right; or

                        (B) of any capital reorganization of the Company, any
            reclassification of the capital stock of the Company, any
            consolidation or merger of the Company with or into another
            corporation, or any conveyance of all or substantially all of the
            assets of the Company to another corporation; or

                        (C) of the voluntary or involuntary dissolution,
            liquidation or winding up of the Company;

then, and in each such case, the Company will mail or cause to be mailed to the
Holder of this Debenture a notice specifying, as the case may be, (i) the date
on which a record is to be taken for the purpose of such dividend, distribution
or right, and stating the amount and character of such dividend, distribution or
right, or (ii) the date on which such reorganization, reclassification,
consolidation, merger, conveyance, dissolution, liquidation or winding up is to
take place, and the times, if any is to be fixed, as of which the holders of
record of Common Stock (or such other stock or securities at the time
deliverable upon the exercise of this Debenture) shall be entitled to exchange
their shares of Common Stock of any class (or such other stock or securities)
for reclassification, consolidation, merger, conveyance, dissolution,
liquidation or winding up or (iii) the amount and character of the stock or
other securities proposed to be issued or granted, the date of such proposed
issuance or grant and the persons or class of persons to whom such stock or
other securities are to be offered, issued or granted. Such notice shall be
mailed at least thirty (30) days prior to the date therein specified.

                  (xvi) The Company will at all times reserve and keep
      available, solely for issuance and delivery upon the conversion of this
      Debenture and other similar Debentures, such shares of Common Stock and
      other stock, securities and property as from time to time shall be
      issuable upon the exercise of this Debenture and all other similar
      Debentures at the time outstanding.

                  (xvii) Upon receipt of evidence reasonably satisfactory to the
      Company of the loss, theft, destruction or mutilation of this Debenture
      and (in the case of loss, theft or destruction) upon delivery of an
      indemnity agreement in an amount reasonably satisfactory to it, or (in the
      case of mutilation) upon surrender and cancellation thereof, the Company
      will issue, in lieu thereof, a new Debenture of like tenor.

      7.    Covenants.

            (a) Affirmative Covenants: The Company will, and with respect to the
agreements set forth in subsections (i) through (viii) hereof, will cause each
subsidiary to:


                                 Page 74 of 149
<PAGE>

                  (i) with respect to its properties, assets and business,
      maintain insurance against loss or damage, to the extent that property,
      assets and businesses of similar character are usually so insured by
      companies similarly situated and operating like properties, assets or
      businesses with responsible insurance companies satisfactory to the
      Majority Holders;

                  (ii) duly pay and discharge all taxes or other claims which
      might become a lien upon any of its properties except to the extent that
      such items are being in good faith appropriately contested;

                  (iii) maintain, preserve and keep its properties in good
      repair, working order and condition, and make all reasonable repairs,
      replacements, additions, betterments and improvements thereto;

                  (iv) conduct its business in substantially the same manner and
      in substantially the same fields as such business is now carried on and
      conducted;

                  (v) comply with all statutes, rules and regulations and
      maintain its corporate existence;

                  (vi) provide the Holder with the following financial
      information:

                        (A) annually, as soon as available, but in any event
            within one hundred twenty (120) days after the last day of each
            fiscal year, audited financial statements, including balance sheets
            as of the last day of the fiscal year and statements of income and
            retained earnings and changes in financial condition for such fiscal
            year each prepared in accordance with generally accepted accounting
            principles, consistently applied ("GAAP") for the period and prior
            periods by independent Certified Public Accountants satisfactory to
            the Majority Holders; provided, however, that the Company shall have
            until January 31, 1999 to deliver the financial statements for the
            fiscal year ended June 30, 1998;

                        (B) as soon as available, but in any event within
            forty-five (45) days after the end of each fiscal quarter,
            internally prepared financial statements of the Company each
            prepared in accordance with GAAP and jobs-in-progress reports for
            said period and prior periods; provided, however, that the Company
            shall have until January 31, 1999 to deliver the financial
            statements for the fiscal quarter ended September 30, 1998;

                        (C) within a reasonable time after a written request
            therefor, such other financial data or information as the Holder may
            reasonably request from time to time;

                        (D) at the same time as it delivers the financial
            statements required under the provisions of subsections (A) and (B)
            hereof, a certificate signed by the president or the chief
            financial, or accounting, officer of the Company, to the effect that
            no Event of Default hereunder or material default under any other
            agreement to which the Company is a party or by which it is bound,
            or by which any of its properties or assets may be affected, and no
            event which, with the


                                 Page 75 of 149
<PAGE>

            giving of notice or the lapse of time, or both, would constitute
            such an Event of Default, has occurred;

                        (E) on a monthly basis, no later than the tenth (10th)
            day after each such month, backlog reports and accounts receivable
            agings of the Company;

                  (vii) permit the Holder to make or cause to be made,
      inspections and audits of any books, records and papers of the Company and
      of any parent or subsidiary thereof and to make extracts therefrom at all
      such reasonable times and as often as the Holder may reasonably require;

                  (viii) immediately give notice to the Holder that an Event of
      Default has occurred or that an event which, with the giving of notice or
      lapse of time, or both, would constitute an Event of Default, has occurred
      and specifying the action which the Company has taken and proposes to take
      with respect thereto.

            (b) Financial Covenant: At the end of each fiscal quarter, the
Company shall maintain a Tangible Net Worth of (-3,042,322) or greater (as
calculated in accordance with GAAP). For purposes hereof "Tangible Net Worth"
shall mean, at any date, (i) the net book value of assets (other than patents,
patent rights, trademarks, trade names, franchises, copyrights, licenses,
permits, goodwill and other intangible assets classified as such in accordance
with GAAP) after all appropriate adjustments in accordance with GAAP (including,
without limitation, reserves for doubtful receivables, obsolescence,
depreciation and amortization) plus (ii) subordinated indebtedness, in each case
computed in accordance with GAAP.

            (c) Negative Covenants: The Company will not, and will not permit
any subsidiary to:

                  (i) create, incur, assume or suffer to exist any liability for
      borrowed money, except (A) indebtedness to the Bank or any other financial
      institution constituting "Senior Debt" hereunder; (B) indebtedness
      outstanding on the date hereof; (C) indebtedness represented by the
      Debentures (and any replacement Debenture or Debentures issued upon
      transfer or exchange of the Debentures); (D) indebtedness represented by
      the Class A Accrued Interest Debentures (and any replacement Class A
      Accrued Interest Debenture or Class A Accrued Interest Debentures issued
      upon transfer or exchange of the Class A Accrued Interest Debentures); (E)
      indebtedness represented by the Class B Accrued Interest Debentures (and
      any replacement Class B Accrued Interest Debenture or Class B Accrued
      Interest Debentures issued upon transfer or exchange of the Class B
      Accrued Interest Debentures); and (F) other indebtedness for borrowed
      money (whether or not constituting a refinancing of existing indebtedness)
      so long as (x) such indebtedness is not secured by collateral securing
      repayment of the Debentures, (y) such indebtedness contains provisions
      reasonably satisfactory to the Majority Holders subordinating the payment
      of principal and interest thereon to the prior payment of principal and
      interest on the Debentures, and (z) the incurrence of which will not cause
      an Event of Default, or an event which with notice or the lapse of time or
      both would constitute an Event of Default, hereunder (collectively,
      "Permitted Indebtedness");


                                 Page 76 of 149
<PAGE>

                  (ii) create, incur, assume or suffer to exist, any mortgage,
      pledge, lien or encumbrance of or upon or security interest in, any of its
      property or assets now owned or hereafter acquired except (A) mortgages,
      liens, pledges and security interests securing Permitted Indebtedness; (B)
      other liens, charges and encumbrances incidental to the conduct of its
      business or the ownership of its property and assets which are not
      incurred in connection with the borrowing of money or the obtaining of
      advances or credit and which do not materially impair the use thereof in
      the operation of its business; (C) liens for taxes or other governmental
      charges which are not delinquent or which are being contested in good
      faith and for which a reserve shall have been established in accordance
      with GAAP; (D) liens granted to secure purchase money financing of
      equipment, provided such liens are limited to the equipment financed; and
      (E) liens granted to refinance unencumbered equipment provided such liens
      are limited to the equipment refinanced and the incurrence of which will
      not cause a default hereunder or in any Senior Debt;

                  (iii) assume, endorse, be or become liable for or guarantee
      the obligations of any other person except by the endorsement of
      negotiable instruments for deposit or collection in the ordinary course of
      business;

                  (iv) (A) terminate any pension plan so as to result in any
      material liability to The Pension Benefit Guaranty Corporation established
      pursuant to Subtitle A of Title IV of ERISA (the "PBGC"), (B) engage in or
      permit any person to engage in any "prohibited transaction" (as defined in
      Section 406 of ERISA or Section 4975 of the Internal Revenue Code of 1986,
      as amended) involving any pension plan which would subject the Company to
      any material tax, penalty or other liability, (C) incur or suffer to exist
      any material "accumulated funding deficiency" (as defined in Section 302
      of ERISA), whether or not waived, involving any pension plan, or (D) allow
      or suffer to exist any event or condition, which presents a material risk
      of incurring a material liability to the PBGC by reason of termination of
      any pension plan;

                  (v) amend, supplement or modify the terms of the Subject
      Securities or increase the outstanding amount of any Subject Securities
      (excluding awards granted under the Plan or under an incentive
      compensation plan or arrangement approved by the Company's Board of
      Directors or by the Compensation Committee of the Company's Board of
      Directors) without the prior consent of the Majority Holders;

                  (vi) enter into any merger or consolidation unless the Company
      shall be the surviving entity in any such merger or consolidation, and
      after giving effect to the transaction no Event of Default and no event
      which with the giving of notice or passage of time or both would
      constitute an Event of Default shall have occurred and be continuing, or
      liquidate, wind-up or dissolve itself or sell, transfer or lease or
      otherwise dispose of all or any substantial part of its assets;

                  (vii) lend or advance money, credit or property to or invest
      in (by capital contribution, loan, purchase or otherwise) any firm,
      corporation, or other person except (A) investments in United States
      Government obligations and certificates of deposit of any bank institution
      with combined capital and surplus of at least $200,000,000, (B) trade
      credit, (C) security deposits, or acquire or otherwise cause any other
      entity to become a subsidiary of the Company (as used herein the term
      "subsidiary"


                                 Page 77 of 149
<PAGE>

      means any corporation or other organization, whether incorporated or
      unincorporated, of which the Company or any other subsidiary of the
      Company beneficially owns a majority of the voting or economic interests),
      and (D) loans outstanding on the date hereof;

                  (viii) declare or pay any dividends or distributions on
      account of its capital stock or purchase, redeem, retire or otherwise
      acquire any of its capital stock or any securities convertible into,
      exchangeable for, or giving any person the right to acquire or otherwise
      subscribe for, any shares of the Company's capital stock; provided,
      however, that so long as no Event of Default or event which, with the
      giving of notice, the lapse of time, or both would constitute an Event of
      Default hereunder has occurred and is continuing, the Company may pay
      regular quarterly dividends on the Preferred Stock in accordance with the
      terms thereof; or

                  (ix) engage in any transaction with any person or entity who
      directly or indirectly, through one or more intermediaries, controls, is
      controlled by, or is under common control with, the Company (an
      "Affiliate"), other than director and compensation arrangements with
      Affiliates serving as officers and/or directors of the Company approved by
      the Company's Board of Directors and other than transactions with
      Affiliates entered into in the ordinary course of business on terms which
      are at least as favorable to the Company as those available from unrelated
      third parties. As used herein, the term "control" means the possession,
      directly or indirectly, of the power to direct or cause the direction of
      the management and policies of the Company, whether through the ownership
      of voting securities, by contract or otherwise, and the terms "controlled"
      and "controlling" have meanings correlative thereto.

      8.    Events of Default.

            (a) Definition. For the purposes of this Debenture, an Event of
Default hereunder will be deemed to have occurred if:

                  (i) the Company fails to pay the principal amount of this
      Debenture when due (whether upon the Due Date, upon acceleration or
      otherwise), whether or not such payment is prohibited by paragraph 4
      hereof;

                  (ii) the Company fails to pay any interest, premium or penalty
      on this Debenture when due and such failure has continued for a period of
      ten (10) days;

                  (iii) the Company fails to perform or observe the provisions
      set forth in Paragraphs 7(b) or 7(c) hereof;

                  (iv) the Company fails to perform or observe any provision
      contained in this Debenture (other than those specifically covered by the
      other provisions of this paragraph 8(a)) and, if such failure is capable
      of being cured, such failure continues for a period of 30 days after the
      Company's receipt of written notice thereof;

                  (v) the Company shall have failed to pay when due any amount
      due and owing under any indebtedness of the Company for borrowed money or
      any other default or event of default shall have occurred (and shall have
      continued beyond the expiration of any applicable grace period) under any
      indebtedness of the Company for


                                 Page 78 of 149
<PAGE>

      borrowed money which would permit the holder thereof to accelerate the
      maturity thereof or there shall have been an acceleration of the stated
      maturity of any indebtedness of the Company for borrowed money;

                  (vi) the Company makes an assignment for the benefit of
      creditors or admits in writing its inability to pay its debts generally as
      they become due; or an order, judgment or decree is entered adjudicating
      the Company as bankrupt or insolvent; or any order for relief with respect
      to the Company is entered under the Federal Bankruptcy Code; or the
      Company petitions or applies to any tribunal for the appointment of a
      custodian, trustee, receiver or liquidator of the Company or of any
      substantial part of the assets of the Company, or commences any proceeding
      relating to the Company under any bankruptcy, reorganization, arrangement,
      insolvency, readjustment of debt, dissolution or liquidation law of any
      jurisdiction ("Insolvency Event or Proceeding"); or any such petition or
      application is filed, or any such proceeding is commenced, against the
      Company and either (y) the Company by any act indicates its approval
      thereof, consents thereto or acquiescence therein or (z) such petition
      application or proceeding is not dismissed within 60 days;

                  (vii) a final judgment which in the aggregate with other
      outstanding final judgments against the Company exceeds $250,000 shall be
      rendered against the Company and within 90 days after entry thereof, such
      judgment is not discharged or execution thereof stayed pending appeal, or
      within 90 days after the expiration of such stay, such judgment is not
      discharged; or

                  (viii) any representation or warranty made by the Company in
      the Purchase Agreement, dated October 21, 1998 between the Company and the
      original Holder of this Debenture or any other certificate or instrument
      delivered in connection therewith shall have been untrue in any material
      respect when made.

            (b) Consequences of Events of Default.

                  (i) If any Event of Default (other than the type described in
      subparagraph 8(a)(vi) above) has occurred, the Holder or Holders of
      Debentures representing a majority of the aggregate principal amount of
      Debentures then outstanding (the "Majority Holders") may demand (by
      written notice delivered to the Company) immediate payment of all or any
      portion of the outstanding principal amount of the Debentures owed by such
      Holder or Holders. If such Majority Holders demand immediate payment of
      all or any portion of such Holder's or Holders' Debentures, the Company
      will, to the extent permitted under the provisions of paragraph 4 hereof,
      immediately pay to such Holder or Holders the principal amount of the
      Debentures requested to be paid (plus accrued interest hereon). If an
      Event of Default of the type described in subparagraph 8(a)(vi) above has
      occurred, then all of the outstanding principal amount of the Debentures
      shall automatically be immediately due and payable without any action on
      the part of any Holders of the Debentures.

                  (ii) If an Event of Default has occurred, each Holder of the
      Debentures will also have any other rights which such Holder may have
      pursuant to applicable law, in each case provided such rights are
      consistent with the provisions of paragraph 4 hereof.


                                 Page 79 of 149
<PAGE>

      9.    Amendment and Waiver. Except as otherwise expressly provided herein,
the provisions of this Debenture may be amended and the Company may take any
action herein prohibited, or omit to perform any act herein required to be
performed by it, only if the Company has obtained the written consent of the
Majority Holders, provided, however, neither the interest rate or principal
amounts payable under the Debentures, the dates on which interest or principal
under the Debentures is due nor the obligations to make payments on the
Debentures on a pro rata basis shall be amended without the prior written
consent of each Holder affected thereby, and further provided, however, that any
amendment or waiver which might in any way adversely affect the holders of
Senior Debt, including, but not limited to, any amendment or waiver affecting
the provisions of paragraph 4 or this paragraph 9 shall require the prior
written consent of each holder of Senior Debt. Any amendment or waiver effected
in accordance with this paragraph 9 shall be binding upon each Holder of this
Debenture and each future Holder of this Debenture.

      10.   Cancellation. After all principal and accrued interest at any time
owed on this Debenture has been paid in full, this Debenture will be surrendered
to the Company for cancellation and will not be reissued.

      11.   Place of Payment. Payments of principal and interest are to be
delivered to the Holder at the office of the Company, 50 Orville Drive, Bohemia,
New York 11716, or to such other address or to the attention of such other
Person as specified by prior written notice to the Company.

      12.   Waiver of Presentment, Demand and Dishonor. The Company hereby
waives presentment for payment, protest, demand, notice of protest, notice of
non-payment and diligence with respect to this Debenture, and waives and
renounces all rights to the benefit of any statute of limitations or any
moratorium, appraisement, exemption or homestead now provided or that hereafter
may be provided by any federal or applicable state statute, including but not
limited to exemptions provided by or allowed under the Federal Bankruptcy Code,
both as to itself and as to all of its property, whether real or personal,
against the enforcement and collection of the obligations evidenced by this
Debenture and any and all extensions, renewals and modifications hereof.

            No failure on the part of the Holder hereof or of any other
Debentures to exercise any right or remedy hereunder with respect to the
Company, whether before or after the happening of an Event of Default, shall
constitute a waiver of any future Event of Default or of any other Event of
Default. No failure to accelerate the debt of the Company evidenced hereby by
reason of an Event of Default or indulgence granted from time to time shall be
construed to be a waiver of the right to insist upon prompt payment thereafter;
or shall be deemed to be a novation of this Debenture or a reinstatement of such
debt evidenced hereby or a waiver of such right of acceleration or any other
right, or be construed so as to preclude the exercise of any right the Holder
may have, whether by the laws of the state governing this Debenture, by
agreement or otherwise; and the Company hereby expressly waives the benefit of
any statute or rule of law or equity that would produce a result contrary to or
in conflict with the foregoing.

      13.   Usury. The Holder and the Company intend that the obligations
evidenced by this Debenture conform strictly to the applicable usury laws from
time to time in force. All agreements between the Company and the Holder,
whether now existing or hereafter arising and


                                 Page 80 of 149
<PAGE>

whether oral or written, hereby are expressly limited so that in no contingency
or event whatsoever, whether by acceleration of maturity hereof or otherwise,
shall the amount paid or agreed to be paid to the Holder, or collected by the
Holder, by or on behalf of the Company for the use, forbearance or detention of
the money to be loaned to the Company hereunder or otherwise, or for the payment
or performance of any covenant or obligation contained herein of the Company to
the Holder, or in any other document evidencing, securing or pertaining to such
indebtedness evidenced hereby, exceed the maximum amount permissible under
applicable usury law. If under any circumstances whatsoever fulfillment of any
provision hereof or any other document, at the time performance of such
provisions shall be due, shall involve transcending the limit of validity
prescribed by law, then, ipso facto, the obligation to be fulfilled shall be
reduced to the limit of such validity; and if under any circumstances the Holder
ever shall receive from or on behalf of the Company an amount deemed interest,
by applicable law, which would exceed the highest lawful rate, such amount that
would be excessive interest under applicable usury laws shall be applied to the
reduction of the Company's principal amount owing hereunder and not to the
payment of interest, or if such excessive interest exceeds the unpaid balance of
principal and such other indebtedness, the excess shall be deemed to have been a
payment made by mistake and shall be refunded to the Company or to any other
person making such payment on the Company's behalf.

      14.   Governing Law. The validity, construction and interpretation of this
Debenture will be governed by the internal laws, but not the law of conflicts
and choices of law, of the State of New York.

      IN WITNESS WHEREOF, the Company has executed and delivered this Class C
13% Convertible Senior Subordinated Debenture this 21st day of October, 1998.


                                        LOGIMETRICS, INC.


                                        By:
                                           -------------------------------------
                                        Name: Norman M. Phipps
                                        Title: Chief Operating Officer


                                 Page 81 of 149
<PAGE>

                                    EXHIBIT A

                               ELECTION TO CONVERT

                  (All capitalized terms used and not otherwise
                     defined herein shall have the meanings
             assigned to them in the Class C 13% Convertible Senior
                            Subordinated Debentures)

LogiMetrics, Inc.
50 Orville Drive
Bohemia, New York 11716

TO WHOM IT MAY CONCERN:

      The undersigned registered owner of the attached Class C 13% Convertible
Senior Subordinated Debenture hereby irrevocably exercises the option to convert
such Debenture into Common Stock of LogiMetrics, Inc. in accordance with the
terms thereof, and directs that any shares issuable and deliverable upon the
conversion be issued in the name of and delivered to the undersigned.


- --------------------------------------------------------------------------------
                            [Name of Debentureholder]


Dated:               , 199
      ---------------     -


                                 Page 82 of 149



                                    EXHIBIT 6

                                FORM OF G WARRANT


                                 Page 83 of 149
<PAGE>

                                                                       EXHIBIT 6

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND CANNOT BE SOLD OR TRANSFERRED
UNLESS AND UNTIL THEY ARE SO REGISTERED OR UNLESS AN EXEMPTION UNDER SUCH ACT OR
LAWS IS AVAILABLE. THE TRANSFERABILITY OF THESE SECURITIES IS FURTHER SUBJECT TO
THE PROVISIONS OF A PURCHASE AGREEMENT DATED AS OF JULY 29, 1997 AMONG THE
COMPANY AND THE PURCHASERS NAMED THEREIN.

                                LOGIMETRICS, INC.

                    Common Stock Purchase Warrant - Series G

      LOGIMETRICS, INC. (the "Company"), a Delaware corporation, hereby
certifies that, for value received, Gerald B. Kramer, or assigns, is entitled,
subject to the terms set forth below, to purchase from the Company Seven Hundred
Seventeen Thousand Two Hundred Forty Seven (717,247) fully paid and
non-assessable shares of Common Stock, par value $.01 per share, of the Company
(the "Common Stock"), at a purchase price, subject to the provisions of
Paragraph 3 hereof, of fifty cents ($.50) per share (the "Purchase Price") at
any time prior to July 29, 2004. The number and character of such shares are
subject to adjustment as provided below, and the term "Common Stock" shall mean,
unless the context otherwise requires, the stock or other securities or property
at the time deliverable upon the exercise of this Warrant.

      1. EXERCISE OF WARRANT. The purchase rights evidenced by this Warrant
shall be exercised by the holder hereof ("Holder") surrendering this Warrant,
with the form of subscription at the end hereof duly executed by such Holder, to
the Company at its office in Bohemia, New York (or such other office as may be
designated by the Company from time to time), accompanied by payment (in cash or
by certified or official bank check). This Warrant may be exercised for less
than the full number of shares of Common Stock at the time called for hereby, in
which case the number of shares receivable upon the exercise of this Warrant as
a whole, and the sum payable upon the exercise of this Warrant as a whole, shall
be proportionately reduced. Upon any such partial exercise, the Company at its
expense will forthwith issue to the Holder hereof a new Warrant or Warrants of
like tenor calling for the number of shares of Common Stock as to which rights
have not been exercised, such Warrant or Warrants to be issued in the name of
the Holder hereof or his nominee.

      2. DELIVERY OF STOCK CERTIFICATES ON EXERCISE. As soon as practicable
after the exercise of this Warrant and payment of the Purchase Price, and in any
event within five (5) business days thereafter, the Company, at its expense,
will cause to be issued in the name of and delivered to the Holder hereof a
certificate or certificates for the number of fully paid and non-assessable
shares of Common Stock or other securities or property to which such Holder
shall be entitled upon such exercise, plus, in lieu of any fractional share
interest to which such Holder would otherwise be entitled, cash equal to such
fraction multiplied by the then current market value of one full share of Common
Stock or other securities to which such Holder shall be so entitled.


                                 Page 84 of 149
<PAGE>

      3. ADJUSTMENT FOR ISSUE OR SALE OF COMMON STOCK AT LESS THAN PURCHASE
PRICE. In case, at any time or from time to time after the date of issuance of
this Warrant ("Issuance Date"), the Company shall issue or sell shares of its
Common Stock (other than any Common Stock issuable upon the exercise or
conversion of (i) the Company's Class A 13% Senior Subordinated Convertible
Pay-in-Kind Debentures due 1999 (the "Debentures") (and any replacement
Debenture or Debentures issued upon transfer or exchange of the Debentures),
(ii) any additional securities issued in lieu of cash interest otherwise payable
on the Debentures ("Accrued Interest Debentures") (and any replacement Accrued
Interest Debenture or Accrued Interest Debentures issued upon transfer or
exchange of the Accrued Interest Debentures), (iii) the Company's Amended and
Restated Class B 13% Convertible Senior Subordinated Pay-in-Kind Debentures due
1999 (the "Class B Debentures") (and any replacement Class B Debenture or Class
B Debentures issued upon transfer or exchange of the Class B Debentures), (iv)
any additional securities issued in lieu of cash interest otherwise payable on
the Class B Debentures (the "Class B Accrued Interest Debentures") (and any
replacement Class B Accrued Interest Debenture or Class B Accrued Interest
Debentures issued upon transfer or exchange of the Class B Accrued Interest
Debentures), (v) securities outstanding on the date hereof, (vi) awards made
pursuant to the Company's Stock Compensation Program, (vii) awards made pursuant
to any incentive compensation plan or arrangement approved by the Company's
Board of Directors or by the Compensation Committee of the Company's Board of
Directors, (viii) the Company's Series G Warrants, (ix) the Company's Series H
Warrants, or (x) the Company's Series I Warrants) (such securities,
collectively, the "Subject Securities") for a consideration per share less than
fifty-two cents ($.52) per share (the "Trigger Price") (or, if a Pro Forma
Adjusted Trigger Price shall be in effect as provided below in this Paragraph 3,
then less than such Pro Forma Adjusted Trigger Price per share), then and in
each such case the Holder of this Warrant, upon the exercise hereof as provided
in Paragraph 1 hereof, shall be entitled to receive, in lieu of the shares of
Common Stock theretofore receivable upon the exercise of this Warrant, a number
of shares of Common Stock determined by (a) dividing the Trigger Price by a Pro
Forma Adjusted Trigger Price per share to be computed as provided below in this
Paragraph 3, and (b) multiplying the resulting quotient by the number of shares
of Common Stock called for on the face of this Warrant. A Pro Forma Adjusted
Trigger Price per share shall be the price computed (to the nearest cent, a
fraction of half cent or more being considered a full cent):

            by dividing (i) the sum of (x) the result obtained by multiplying
            the number of shares of Common Stock of the Company outstanding
            immediately prior to such issue or sale by the Trigger Price (or, if
            a Pro Forma Adjusted Trigger Price shall be in effect, by such
            Price), and (y) the consideration, if any, received by the Company
            upon such issue or sale, by (ii) the number of shares of Common
            Stock of the Company outstanding immediately after such issue or
            sale.

For the purpose of this Paragraph 3:

      3.1 Stock Splits, Dividends, etc., in Common Stock or Convertible
Securities. In case the Company splits its Common Stock or shall declare any
dividend, or make any other distribution, upon any stock of the Company of any
class payable in Common Stock, or in any stock or other securities directly or
indirectly convertible into or exchangeable for Common Stock (any such stock or
other securities being hereinafter called "Convertible Securities"), such split,
declaration or distribution shall be deemed to be an issue or sale (as of the
record date for such split,


                                 Page 85 of 149
<PAGE>

dividend or other distribution), without consideration, of such Common Stock or
such Convertible Securities, as the case may be.

      3.2 Issuance or Sale of Convertible Securities. In case the Company shall
issue or sell any Convertible Securities other than the Subject Securities,
there shall be determined the price per share for which Common Stock is issuable
upon the conversion or exchange thereof, such determination to be made by
dividing (a) the total amount received or receivable by the Company as
consideration for the issue or sale of such Convertible Securities, plus the
minimum aggregate amount of additional consideration, if any, payable to the
Company upon the conversion or exchange thereof, by (b) the maximum number of
shares of Common Stock of the Company issuable upon the conversion or exchange
of all such Convertible Securities.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then such issue or sale shall
be deemed to be an issue or sale for cash (as of the date of issue or sale of
such Convertible Securities) of such maximum number of shares of Common Stock at
the price per share so determined, provided that, if such Convertible Securities
shall by their terms provide for an increase or increases, with the passage of
time, in the amount of additional consideration, if any, payable to the Company,
or in the rate of exchange, upon the conversion or exchange thereof, the Pro
Forma Adjusted Trigger Price per share shall, forthwith upon any such increase
becoming effective, be readjusted to reflect the same, and provided, further,
that upon the expiration of such rights of conversion or exchange of such
Convertible Securities, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so issued or sold were those
issued or sold upon the conversion or exchange of such Convertible Securities,
and that they were issued or sold for the consideration actually received by the
Company upon such conversion or exchange, plus the consideration, if any,
actually received by the Company for the issue or sale of all such Convertible
Securities which shall have been converted or exchanged.

      3.3 Grant of Rights or Options for Common Stock. In case the Company shall
grant any rights or options to subscribe for, purchase or otherwise acquire
Common Stock of any class other than the Subject Securities, there shall be
determined the price per share for which Common Stock is issuable upon the
exercise of such rights or options, such determination to be made by dividing
(a) the total amount, if any, received or receivable by the Company as
consideration for the granting of such rights or options, plus the minimum
aggregate amount of additional consideration, if any, payable to the Company
upon the exercise of such rights or options, by (b) the maximum number of shares
of Common Stock issuable upon the exercise of such rights or options.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then the granting of such
rights or options shall be deemed to be an issue or sale for cash (as of the
date of the granting of such rights or options) of such maximum number of shares
of Common Stock at the price per share so determined, provided that, if such
rights or options shall by their terms provide for an increase or increases,
with the passage of time, in the amount of additional consideration, if any,
payable to the Company upon the exercise thereof, the Pro Forma Adjusted Trigger
Price per share shall, forthwith upon any such increase becoming effective, be
readjusted to reflect the same, and provided, further, that upon the expiration
of


                                 Page 86 of 149
<PAGE>

such rights or options, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so issued or sold were those
issued or sold upon the exercise of such rights or options and that they were
issued or sold for the consideration actually received by the Company upon such
exercise, plus the consideration, if any, actually received by the Company for
the granting of all such rights or options, whether or not exercised.

      3.4 Grant of Rights or Options for Convertible Securities. In case the
Company shall grant any rights or options to subscribe for, purchase or
otherwise acquire Convertible Securities other than the Subject Securities, such
Convertible Securities shall be deemed, for the purposes of subparagraph 3.2.
above, to have been issued or sold for the total amount received or receivable
by the Company as consideration for the granting of such rights or options plus
the minimum aggregate amount of additional consideration, if any, payable to the
Company upon the exercise of such rights or options, provided that, upon the
expiration of such rights or options, if any thereof shall not have been
exercised, the Pro Forma Adjusted Trigger Price per share shall forthwith be
readjusted and thereafter be the price which it would have been had an
adjustment been made upon the basis that the only Convertible Securities so
issued or sold were those issued or sold upon the exercise of such rights or
options and that they were issued or sold for the consideration actually
received by the Company upon such exercise, plus the consideration, if any,
actually received by the Company for the granting of all such rights or options,
whether or not exercised.

      3.5 Dilution in Case of Other Stock or Securities. In case any shares of
stock or other securities, other than Common Stock of the Company, shall at any
time be receivable upon the exercise of this Warrant, and in case any additional
shares of such stock or any additional such securities (or any stock or other
securities convertible into or exchangeable for any such stock or securities)
shall be issued or sold for a consideration per share such as to dilute the
purchase rights evidenced by this Warrant, then and in each such case the Pro
Forma Adjusted Trigger Price per share shall forthwith be adjusted,
substantially in the manner provided for above in this Paragraph 3, so as to
protect the Holder of this Warrant against the effect of such dilution.

      3.6 Expenses, etc., Deducted. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for cash, the consideration received therefor shall be deemed to be the
amount received by the Company therefor, after deducting any expenses incurred
and any underwriting or similar commissions, compensation or concessions paid or
allowed by the Company in connection with such issue or sale.

      3.7 Determination of Consideration. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for a consideration other than cash (or a consideration which includes cash
and other assets) then, for the purpose of this Paragraph 3, the Board of
Directors of the Company shall promptly determine the fair value of such
consideration, and such Common Stock, Convertible Securities, rights or options
shall be deemed to have been issued or sold on the date of such determination in
good faith. Such value shall not be more than the amount at which such
consideration is recorded in the books of the Company for accounting purposes
except in the case of an acquisition accounted for on a pooling of interest
basis. In case any Common Stock or Convertible Securities or any rights or
options to


                                 Page 87 of 149
<PAGE>

subscribe for, purchase or otherwise acquire any Common Stock or Convertible
Securities shall be issued or sold together with other stock or securities or
other assets of the Company for a consideration which covers both, the Board of
Directors of the Company shall promptly determine in good faith what part of the
consideration so received is to be deemed to be the consideration for the issue
or sale of such Common Stock or Convertible Securities or such rights or
options.

            The Company covenants and agrees that, should any determination of
fair value of consideration or of allocation of consideration be made by the
Board of Directors of the Company, pursuant to this subparagraph 3.7, it will,
not less than seven (7) days after any and each such determination, deliver to
the Holder of this Warrant a certificate signed by the President or a Vice
President and the Treasurer or an Assistant Treasurer of the Company reciting
such value as thus determined and setting forth the nature of the transaction
for which such determination was required to be made, the nature of any
consideration, other than cash, for which Common Stock, Convertible Securities,
rights or options have been or are to be issued, the basis for its valuation,
the number of shares of Common Stock which have been or are to be issued, and a
description of any Convertible Securities, rights or options which have been or
are to be issued, including their number, amount and terms.

      3.8 Record Date Deemed Issue Date. In case the Company shall take a record
of the Holders of shares of its stock of any class for the purpose of entitling
them (a) to receive a dividend or a distribution payable in Common Stock or in
Convertible Securities, or (b) to subscribe for, purchase or otherwise acquire
Common Stock or Convertible Securities, then such record date shall be deemed to
be the date of the issue or sale of the Common Stock issued or sold or deemed to
have been issued or sold upon the declaration of such dividend or the making of
such other distribution, or the date of the granting of such rights of
subscription, purchase or other acquisition, as the case may be.

      3.9 Shares Considered Outstanding. The number of shares of Common Stock
outstanding at any given time shall include shares issuable in respect of scrip
certificates issued in lieu of fractions of shares of Common Stock, but shall
exclude shares in the treasury of the Company.

      3.10 Duration of ProForma Adjusted Trigger Price. Following each
computation or readjustment of a Pro Forma Adjusted Trigger Price as provided in
this Paragraph 3, the newly computed or adjusted Pro Forma Adjusted Trigger
Price shall remain in effect until a further computation or readjustment thereof
is required by this Paragraph 3.

      4. ADJUSTMENT FOR DIVIDENDS IN OTHER STOCK, PROPERTY, ETC.;
RECLASSIFICATIONS, ETC. In case at any time or from time to time after the
Issuance Date the Holders of the Common Stock of the Company of any class (or
any other shares of stock or other securities at the time receivable upon the
exercise of this Warrant) shall have received, or, on or after the record date
fixed for the determination of eligible stockholders, shall have become entitled
to receive:

            (a)   other or additional stock or other securities or property
                  (other than cash) by way of dividend;

            (b)   any cash paid or payable out of capital or paid-in surplus or
                  surplus created as a result of a revaluation of property by
                  way of dividend; or


                                 Page 88 of 149
<PAGE>

            (c)   other or additional (or less) stock or other securities or
                  property (including cash) by way of stock-split, spin-off,
                  split-off, split-up, reclassification, combination of shares
                  or similar corporate rearrangement;

(other than additional shares of Common Stock issued to holders of Common Stock
as a stock dividend or stock-split, adjustments in respect of which shall be
covered by the provisions of Paragraph 3 hereof), then in each case the Holder
of this Warrant, upon the exercise hereof as provided in Paragraph 1 hereof,
shall be entitled to receive, in lieu of, or in addition to, as the case may be,
the shares theretofore receivable upon the exercise of this Warrant, the amount
of stock or other securities or property (including cash in the cases referred
to in clauses (b) and (c) above) which such Holder would hold on the date of
such exercise if, on the Issuance Date, he had been the holder of record of the
number of shares of Common Stock of the Company called for on the face of this
Warrant and had thereafter, during the period from the Issuance Date to and
including the date of such exercise, retained such shares and/or all other or
additional (or less) stock or other securities or property (including cash in
the cases referred to in clauses (b) and (c) above) receivable by him as
aforesaid during such period, giving effect to all adjustments called for during
such period by Paragraphs 3 and 5 hereof.

      5. ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER, ETC. In case of
any reorganization of the Company (or any other corporation the stock or other
securities of which are at the time deliverable on the exercise of this Warrant)
after the date hereof, or in case, after such date, the Company (or any such
other corporation) shall consolidate with or merge into another corporation or
convey all or substantially all its assets to another corporation, then and in
each such case the Holder of this Warrant, upon the exercise hereof as provided
in Paragraph 1 hereof, at any time after the consummation such reorganization,
consolidation, merger or conveyance, shall be entitled to receive the stock or
other securities or property to which such Holder would have been entitled upon
such consummation if such Holder had exercised this Warrant immediately prior
thereto, all subject to further adjustments as provided in Paragraphs 3 and 4
hereof; in each such case, the terms of this Warrant shall be applicable to the
shares of stock or other securities or property receivable upon the exercise of
this Warrant after such consummation.

      6. NO DILUTION OR IMPAIRMENT. The Company will not, by amendment of its
charter or through reorganization, consolidation, merger, dissolution, sale of
assets or any other voluntary action, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
action as may be necessary or appropriate in order to protect the rights of the
Holder hereof against dilution or other impairment. Without limiting the
generality of the foregoing, the Company will not increase the par value of any
shares of stock receivable upon the exercise of this Warrant above the amount
payable therefor upon such exercise, and at all times will take all such action
as may be necessary or appropriate in order that the Company may validly and
legally issue fully paid and non-assessable stock upon the exercise of this
Warrant.

      7. ACCOUNTANTS' CERTIFICATE AS TO ADJUSTMENTS. In each case of an
adjustment in the number of shares of Common Stock or other stock, securities or
property receivable on the exercise of this Warrant, at the request of the
Holder of this Warrant the Company at its expense shall promptly cause
independent public accountants of recognized standing, selected by the Company,
to compute such adjustment in accordance with the terms of this Warrant and
prepare a certificate setting forth such adjustment and showing in detail the


                                 Page 89 of 149
<PAGE>

facts upon which such adjustment is based, including a statement of (a) the
consideration received or to be received by the Company for any additional
shares issued or sold or deemed to have been issued or sold, (b) the number of
shares of Common Stock outstanding or deemed to be outstanding and (c) the Pro
Forma Adjusted Trigger Price. The Company will forthwith mail a copy of each
such certificate to the Holder of this Warrant.

      8. NOTICES OF RECORD DATE, ETC. In case:

                  (a)   the Company shall take a record of the Holders of its
                        Common Stock (or other stock or securities at the time
                        deliverable upon the exercise of this Warrant) for the
                        purpose of entitling or enabling them to receive any
                        dividend (other than a cash or stock dividend at the
                        same rate as the rate of the last cash or stock dividend
                        theretofore paid) or other distribution, or to exercise
                        any preemptive right pursuant to the Company's charter,
                        or to receive any right to subscribe for or purchase any
                        shares of stock of any class or any other securities, or
                        to receive any other right; or

                  (b)   of any capital reorganization of the Company, any
                        reclassification of the capital stock of the Company,
                        any consolidation or merger of the Company with or into
                        another corporation, or any conveyance of all or
                        substantially all of the assets of the Company to
                        another corporation; or

                  (c)   of the voluntary or involuntary dissolution, liquidation
                        or winding up of the Company;

then, and in each such case, the Company will mail or cause to be mailed to the
Holder of this Warrant a notice specifying, as the case may be, (i) the date on
which a record is to be taken for the purpose of such dividend, distribution or
right, and stating the amount and character of such dividend, distribution or
right, or (ii) the date on which such reorganization, reclassification,
consolidation, merger, conveyance, dissolution, liquidation or winding up is to
take place, and the times, if any is to be fixed, as of which the holders of
record of Common Stock (or such other stock or securities at the time
deliverable upon the exercise of this Warrant) shall be entitled to exchange
their shares of Common Stock of any class (or such other stock or securities)
for reclassification, consolidation, merger, conveyance, dissolution,
liquidation or winding up or (iii) the amount and character of the stock or
other securities proposed to be issued or granted, the date of such proposed
issuance or grant and the persons or class of persons to whom such stock or
other securities are to be offered, issued or granted. Such notice shall be
mailed at least thirty (30) days prior to the date therein specified.

      9. RESERVATION OF STOCK, ETC., ISSUABLE ON EXERCISE OF WARRANTS. The
Company will at all times reserve and keep available, solely for issuance and
delivery upon the exercise of this Warrant and other similar Warrants, such
shares of Common Stock and other stock, securities and property as from time to
time shall be issuable upon the exercise of this Warrant and all other similar
Warrants at the time outstanding.

      10. REPLACEMENT OF WARRANT. Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement in an amount reasonably satisfactory to it, or (in the case
of mutilation) upon surrender and cancellation thereof, the Company will issue,
in lieu thereof, a new Warrant of like tenor.


                                 Page 90 of 149
<PAGE>

      11. REMEDIES. The Company stipulates that the remedies at law of the
Holder of this Warrant in the event of any default by the Company in its
performance of or compliance with any of the terms of this Warrant are not and
will not be adequate, and that the same may be specifically enforced.

      12. NEGOTIABILITY, ETC. This Warrant is issued upon the following terms,
to all of which each taker or owner hereof consents and agrees:

                  (a)   Title to this warrant may be transferred by endorsement
                        (by the Holder hereof executing the form of assignment
                        at the end hereof including guaranty of signature) and
                        delivery in the same manner as in the case of a
                        negotiable instrument transferable by endorsement and
                        delivery.

                  (b)   Any person in possession of this Warrant properly
                        endorsed is authorized to represent himself as absolute
                        owner hereof and is granted power to transfer absolute
                        title hereto by endorsement and delivery hereof to a
                        bona fide purchaser hereof for value; each prior taker
                        or owner waives and renounces all of his equities or
                        rights in this Warrant in favor of every such bona fide
                        purchaser, and every such bona fide purchaser shall
                        acquire title hereto and to all rights represented
                        hereby.

                  (c)   Until this Warrant is transferred on the books of the
                        Company, the Company may treat the registered Holder of
                        this Warrant as the absolute owner hereof for all
                        purposes without being affected by any notice to the
                        contrary.

      13. SUBDIVISION OF RIGHTS. This Warrant (as well as any new warrants
issued pursuant to the provisions of this paragraph) is exchangeable, upon the
surrender hereof by the Holder hereof, at the principal office of the Company
for any number of new warrants of like tenor and date representing in the
aggregate the right to subscribe for and purchase the number of shares of Common
Stock of the Company which may be subscribed for and purchased hereunder.

      14. REGISTRATION RIGHTS.

            a. Registration. On or prior to October 27, 1997, the Company will
file a registration statement ("Registration Statement") with the Securities and
Exchange Commission ("SEC") covering (x) the Warrants, and (y) the shares of
Common Stock issuable upon exercise of the Warrants (and covering such other
securities as the Company shall determine in its sole discretion) (collectively
"Registrable Securities"), and will use its best efforts to cause the
Registration Statement to become effective on or prior to the ninetieth day
after such filing and to keep the Registration Statement effective until the
earlier of (i) seven years from the date it is declared effective by the SEC, or
(ii) the, sale of all of the Registrable Securities.

            b. Additional Terms. Except as otherwise expressly stated herein,
the following provisions shall be applicable to the Registration Statement:

                  (i) The Company will use its best efforts to cause the
      Registration Statement to become effective as promptly as possible, and if
      any stop order shall be issued by the SEC in connection therewith to use
      its reasonable efforts to obtain the


                                 Page 91 of 149
<PAGE>

      removal of such order. Following the effective date of the Registration
      Statement, the Company shall, upon the request of the Holder, forthwith
      supply such reasonable number of copies of the Registration Statement,
      preliminary prospectus and prospectus meeting the requirements of the
      Securities Act of 1933, as amended (the "Securities Act"), and other
      documents necessary or incidental to a public offering of the Registrable
      Securities, as shall be reasonably requested by the Holder to permit the
      Holder to make a public distribution of its, his or her Registrable
      Securities; provided, however, that by accepting this Warrant, the Holder
      agrees, if requested by the managing underwriter(s) in connection with an
      underwritten public offering of the Company's equity securities, to enter
      into a customary agreement with such managing underwriter(s) not to offer
      for sale or sell its, his or her Registrable Securities for up to 180 days
      after such offering. The Company will use its reasonable efforts to
      qualify the Registrable Securities for sale in such states as the Holder
      of Registrable Securities shall reasonably request, provided that no such
      qualification will be required in any jurisdiction where, solely as a
      result thereof, the Company would be subject to service of general process
      or to taxation or qualification as a foreign corporation doing business in
      such jurisdiction. The obligations of the Company hereunder with respect
      to the Holder's Registrable Securities are expressly conditioned on the
      Holder's furnishing to the Company such appropriate information concerning
      the Holder, the Holder's Registrable Securities and the terms of the
      Holders offering of such Registrable Securities as the Company may
      reasonably request.

                  (ii) The Company shall pay all expenses incurred in complying
      with the provisions of this Paragraph 14, including, without limitation,
      all registration and filing fees (including all expenses incident to
      filing with the National Association of Securities Dealers, Inc.),
      printing expenses, fees and disbursements of counsel to the Company,
      securities law and blue sky fees and expenses and the expenses of any
      regular and special audits incident to or required by any such
      registration. All underwriting discounts and selling commissions
      applicable to the sales of the Registrable Securities, and any state or
      federal transfer taxes payable with respect to the sales of the
      Registrable Securities and all fees and disbursements of counsel for the
      Holder, if any, in each case arising in connection with registration of
      the Registrable Securities shall be payable by the Holder.

                  (iii) In connection with the registration of the Registrable
      Securities pursuant to this Paragraph 14, the Company shall indemnify and
      hold harmless the Holder, its affiliates, officers, directors, partners,
      employees, agents and representatives, each person, if any, who controls
      the Holder within the meaning of the Securities Act or the Securities
      Exchange Act of 1934, as amended (the "Exchange Act"), any person deemed
      to be an underwriter of the Registrable Securities and any person claiming
      by or through any of them (collectively, the "Indemnified Persons") from
      and against all losses, claims, damages, expenses or liabilities (or
      actions in respect thereof) arising out of or are based upon any untrue
      statement of any material fact contained in the Registration Statement or
      alleged untrue statement, under which such securities were registered
      under the Securities Act, any preliminary prospectus or final prospectus
      contained therein, or any amendment or supplement thereto, or arise out of
      or are based upon the omission to state therein a material fact required
      to be stated therein or necessary to make the statements made therein, in
      light of the circumstances under which they are made, not misleading, or
      any violation by the Company of the Securities Act, the Exchange Act or
      state securities or blue sky laws applicable to the Company and relating
      to action or inaction required of the Company in connection with such
      registration or qualification


                                 Page 92 of 149
<PAGE>

      under such state securities or blue sky laws; and will reimburse the
      Indemnified Persons for any legal or any other expenses reasonably
      incurred by them in connection with investigating or defending any such
      loss, claim, damage, liability or action; provided, however, that the
      Company will not be liable in any such case to any Indemnified Person to
      the extent that any such loss, claim, damage or liability arises out of or
      is based upon an untrue statement or omission made in the Registration
      Statement, said preliminary prospectus or said final prospectus or said
      amendment or supplement or any document incident thereto in reliance upon
      and in conformity with written information furnished to the Company by or
      on behalf of the Holder.

                  (iv) The Holder will indemnify and hold harmless the Company
      and each person, if any, who controls the Company within the meaning of
      the Securities Act or the Exchange Act, each officer of the Company who
      signs the Registration Statement and each director of the Company from and
      against any and all such losses, claims, damages or liabilities arising
      from any untrue statement in, or omission from, the Registration
      Statement, any such preliminary or final prospectus, amendment, or
      supplement or document incident thereto if the statement or omission in
      respect of which such loss, claim, damage or liability is asserted was
      made in reliance upon and in conformity with information furnished in
      writing to the Company by or on behalf of the Holder for use in connection
      with the preparation of the Registration Statement or such prospectus or
      amendment or supplement thereof.

                  (v) The reimbursements required by clauses (iii) and (iv)
      shall be made by periodic payments during the course of the investigation
      or defense as and when bills are received or expenses incurred; provided,
      however, that to the extent that an indemnified party receives periodic
      payments for legal or other expenses during the course of an investigation
      or defense, and such party subsequently received payments for such
      expenses from any other parties to the proceeding, such payments shall be
      used by the indemnified party to reimburse the indemnifying party for such
      periodic payments. Any party which proposes to assert the right to be
      indemnified under clause (iii) or (iv) will, promptly after receipt of
      notice of commencement of any action, suit or proceeding against such
      party in respect of which a claim is to be made against any indemnified
      party hereunder, notify each such indemnifying party of the commencement
      of such action, suit or proceeding, enclosing a copy of all papers served,
      but the failure to so notify such indemnifying party of any such action,
      suit or proceeding shall not relieve the indemnifying party from any
      obligation which it may have to any indemnified party hereunder unless and
      only to the extent that the indemnifying party is prejudiced by said lack
      of notice. In case any such action, suit or proceeding shall be brought
      against any indemnified party and it shall notify the indemnifying party
      of the commencement thereof, the indemnifying party shall be entitled to
      participate in and, to the extent that it shall wish, jointly with any
      other indemnifying party similarly notified, to assume the defense
      thereof, with counsel satisfactory to such indemnified party, and after
      notice from the indemnifying party to such indemnified party of its
      election so to assume the defense thereof, the indemnifying party shall
      not be liable to such indemnified party for any legal or other expense,
      other than reasonable costs of investigation subsequently incurred by such
      indemnified party in connection with the defense thereof. The indemnified
      party shall have the right to employ its own counsel in any such action,
      but the reasonable fees and expenses of such counsel shall be at the
      expense of such indemnified party, when and as incurred, unless (A) the
      employment of counsel by such indemnified party has been


                                 Page 93 of 149
<PAGE>

      authorized by the indemnifying party, (B) the indemnified party has
      reasonably concluded (based on advice of counsel), that there may be legal
      defenses available to it that are different from or in addition to those
      available to the indemnifying party, (C) the indemnified party shall have
      reasonably concluded (based on advice of counsel) that there may be a
      conflict of interest between the indemnifying party and the indemnified
      party in the conduct of defense of such action (in which case the
      indemnifying party shall not have the right to direct the defense of such
      action on behalf of the indemnified party), or (D) the indemnifying party
      shall not in fact have employed counsel to assume the defense of such
      action within 15 days after receipt of notice of such action. An
      indemnifying party shall not be liable for any settlement or any action or
      claim effected without its consent, which shall not be unreasonably
      withheld.

                  (vi) If the indemnification provided for in this Paragraph 14
      is unavailable to any indemnified party hereunder in respect of any
      losses, claims, damages, liabilities or expenses referred to therein, then
      the indemnifying party, in lieu of indemnifying such indemnified party,
      shall contribute to the amount paid or payable by such indemnified party
      as a result of such losses, claims, damages, liabilities or expenses in
      such proportion as is appropriate to reflect the relative fault of the
      indemnifying party and indemnified parties in connection with the actions
      that resulted in such losses, claims, damages, liabilities or expenses, as
      well as any other relevant equitable considerations. The relative fault of
      such indemnifying party and indemnified parties shall be determined by
      reference to, among other things, whether any action in question,
      including any untrue or alleged untrue statement of a material fact or
      omission or alleged omission to state a material fact, has been made by,
      or relates to information supplied by, such indemnifying, party or
      indemnified parties, and the parties' relative intent, knowledge, access
      to information and opportunity to correct or prevent such action. The
      amount paid or payable by a party as a result of the losses, claims,
      damages, liabilities and expenses referred to above shall be deemed to
      include, subject to the limitations set forth herein, any legal or other
      fees or expenses reasonably incurred by such party in connection with any
      investigation or proceeding.

                  (vii) The Company and the Holder agree that it would not be
      just and equitable if contribution pursuant to clause (vi) were determined
      by pro rata allocation or by any other method of allocation that does not
      take account of the equitable considerations referred to in the
      immediately preceding paragraph. Notwithstanding any other provision
      hereof, in no event shall the contribution obligation of the Holder be
      greater in amount than the excess of (A) the dollar amount of proceeds
      received by the Holder upon the sale of the securities giving rise to such
      contribution obligation over (B) the dollar amount of any damages that the
      Holder has otherwise been required to pay by reason of the untrue or
      alleged untrue statement or omission or alleged omission giving rise to
      such obligation. No person guilty of fraudulent misrepresentation (within
      the meaning of Section 1l(f) of the Securities Act) shall be entitled to
      contribution from any person who was not guilty of such fraudulent
      misrepresentation.

                  (viii) Neither the filing of the Registration Statement by the
      Company pursuant to this Agreement nor the making of any request for
      prospectuses by the Holder shall impose upon the Holder any obligation to
      exercise his, her or its Warrants or to sell his, her or its Registrable
      Securities.


                                 Page 94 of 149
<PAGE>

                  (ix) The Holder, upon receipt of notice from the Company that
      an event has occurred which requires a post-effective amendment to the
      Registration Statement or a supplement to the prospectus included therein,
      shall promptly discontinue the sale of his, her or its Registrable
      Securities until the Holder receives a copy of a supplemented or amended
      prospectus from the Company, which the Company shall provide as soon as
      practicable after such notice.

      15. MAILING OF NOTICES, ETC. All notices, requests, claims, demands,
waivers and other communications hereunder shall be in writing and shall be
deemed to have been duly given when delivered by hand, when delivered by
courier, three days after being deposited in the mail (registered or certified
mail, postage prepaid, return receipt requested), or when received by facsimile
transmission upon receipt of a confirmed transmission report, as follows:

If to the Company:      50 Orville Drive
                        Bohemia, New York 11716
                        Tel: (516)784-4110
                        Fax: (516) 784-4132
                        Attention: Chief Executive Officer

and if to the Holder of this Warrant to the address furnished to the Company in
writing by the last Holder of this Warrant who shall have furnished an address
to the Company in writing. Either the Company or the Holder of this Warrant, by
notice given to the other parties hereto in accordance with this Section 15, may
change the address or facsimile transmission number to which such notice or
other communications are to be sent to such party.

      16. HEADINGS, ETC. The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect the meaning hereof.

      17. CHANGE, WAIVER, ETC. Neither this Warrant nor any term hereof may be
changed, waived, discharged or terminated orally but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought. 18. GOVERNING LAW. This Warrant shall be
construed and enforced in accordance with the laws of the State of New York.


                                        LOGIMETRICS, INC.


                                        By:
                                           -------------------------------------

Dated: July 29, 1997

Attest:


- --------------------------------------


                                 Page 95 of 149
<PAGE>

                  [To be signed only upon exercise of Warrant]

To LOGIMETRICS, INC.:

      The undersigned, the Holder of the within Series G Warrant, hereby
irrevocably elects to exercise the purchase right represented by such Warrant
for, and to purchase thereunder, __________ shares of Common Stock of
LOGIMETRICS, INC. and herewith makes payment of $________ therefor, and requests
that the certificates for such shares be issued in the name of, and be delivered
to, __________, whose address is _____________.


Dated:


- --------------------------------------


- --------------------------------------------------------------------------------
                                        (Signature must conform in all
                                        respects to name of Holder as
                                        specified on the face of the Warrant)

                                        Address:

- --------------------------------------------------------------------------------


                                 Page 96 of 149
<PAGE>

                  [To be signed only upon transfer of Warrant]

            FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto ____________ the right represented by the within Series G Warrant
to purchase the ___________ shares of the Common Stock of LOGIMETRICS, INC. to
which the within Series G Warrant relates, and appoints _____________ attorney
to transfer said right on the books of LOGIMETRICS, INC. with full power of
substitution in the premises.

Dated:


- --------------------------------------


- --------------------------------------------------------------------------------
                                        (Signature must conform in all
                                        respects to name of Holder as
                                        specified on the face of the Warrant)

                                        Address:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------


In the presence of

- --------------------------------------


                                 Page 97 of 149



                                    EXHIBIT 7

                                FORM OF H WARRANT


                                 Page 98 of 149
<PAGE>

                                                                       EXHIBIT 7

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND CANNOT BE SOLD OR TRANSFERRED
UNLESS AND UNTIL THEY ARE SO REGISTERED OR UNLESS AN EXEMPTION UNDER SUCH ACT OR
LAWS IS AVAILABLE. THE TRANSFERABILITY OF THESE SECURITIES IS FURTHER SUBJECT TO
THE PROVISIONS OF A PURCHASE AGREEMENT DATED AS OF JULY 29, 1997 AMONG THE
COMPANY AND THE PURCHASERS NAMED THEREIN.

                                LOGIMETRICS, INC.

                    Common Stock Purchase Warrant - Series H

            LOGIMETRICS, INC. (the "Company"), a Delaware corporation, hereby
certifies that, for value received, Gerald B. Kramer, or assigns, is entitled,
subject to the terms set forth below, to purchase from the Company Thirty-Eight
Thousand Three Hundred Seventy One (38,371) fully paid and non-assessable shares
of Common Stock, par value $.0l per share, of the Company (the "Common Stock"),
at a purchase price, subject to the provisions of Paragraph 3 hereof, of sixty
cents ($.60) per share (the "Purchase Price") at any time prior to July 29,
2004. The number and character of such shares are subject to adjustment as
provided below, and the term "Common Stock" shall mean, unless the context
otherwise requires, the stock or other securities or property at the time
deliverable upon the exercise of this Warrant.

      1. EXERCISE OF WARRANT. The purchase rights evidenced by this Warrant
shall be exercised by the holder hereof ("Holder") surrendering this Warrant,
with the form of subscription at the end hereof duly executed by such Holder, to
the Company at its office in Bohemia, New York (or such other office as may be
designated by the Company from time to time), accompanied by payment (in cash or
by certified or official bank check). This Warrant may be exercised for less
than the full number of shares of Common Stock at the time called for hereby, in
which case the number of shares receivable upon the exercise of this Warrant as
a whole, and the sum payable upon the exercise of this Warrant as a whole, shall
be proportionately reduced. Upon any such partial exercise, the Company at its
expense will forthwith issue to the Holder hereof a new Warrant or Warrants of
like tenor calling for the number of shares of Common Stock as to which rights
have not been exercised, such Warrant or Warrants to be issued in the name of
the Holder hereof or his nominee.

      2. DELIVERY OF STOCK CERTIFICATES ON EXERCISE. As soon as practicable
after the exercise of this Warrant and payment of the Purchase Price, and in any
event within five (5) business days thereafter, the Company, at its expense,
will cause to be issued in the name of and delivered to the Holder hereof a
certificate or certificates for the number of fully paid and non-assessable
shares of Common Stock or other securities or property to which such Holder
shall be entitled upon such exercise, plus, in lieu of any fractional share
interest to which such Holder would otherwise be entitled, cash equal to such
fraction multiplied by the then current market value of one full share of Common
Stock or other securities to which such Holder shall be so entitled.

      3. ADJUSTMENT FOR ISSUE OR SALE OF COMMON STOCK AT LESS THAN


                                 Page 99 of 149
<PAGE>

PURCHASE PRICE. In case, at any time or from time to time after the date of
issuance of this Warrant ("Issuance Date"), the Company shall issue or sell
shares of its Common Stock (other than any Common Stock issuable upon the
exercise or conversion of (i) the Company's Class A 13% Senior Subordinated
Convertible Pay-in-Kind Debentures due 1999 (the "Debentures") (and any
replacement Debenture or Debentures issued upon transfer or exchange of the
Debentures), (ii) any additional securities issued in lieu of cash interest
otherwise payable on the Debentures ("Accrued Interest Debentures") (and any
replacement Accrued Interest Debenture or Accrued Interest Debentures issued
upon transfer or exchange of the Accrued Interest Debentures), (iii) the
Company's Amended and Restated Class B 13% Convertible Senior Subordinated
Pay-in-Kind Debentures due 1999 (the "Class B Debentures") (and any replacement
Class B Debenture or Class B Debentures issued upon transfer or exchange of the
Class B Debentures), (iv) any additional securities issued in lieu of cash
interest otherwise payable on the Class B Debentures (the "Class B Accrued
Interest Debentures") (and any replacement Class B Accrued Interest Debenture or
Class B Accrued Interest Debentures issued upon transfer or exchange of the
Class B Accrued Interest Debentures), (v) securities outstanding on the date
hereof, (vi) awards made pursuant to the Company's Stock Compensation Program,
(vii) awards made pursuant to any incentive compensation plan or arrangement
approved by the Company's Board of Directors or by the Compensation Committee of
the Company's Board of Directors, (viii) the Company's Series G Warrants, (ix)
the Company's Series H Warrants, or (x) the Company's Series I Warrants) (such
securities, collectively, the "Subject Securities") for a consideration per
share less than fifty-two cents ($.52) per share (the "Trigger Price") (or, if a
Pro Forma Adjusted Trigger Price shall be in effect as provided below in this
Paragraph 3, then less than such Pro Forma Adjusted Trigger Price per share),
then and in each such case the Holder of this Warrant, upon the exercise hereof
as provided in Paragraph 1 hereof, shall be entitled to receive, in lieu of the
shares of Common Stock theretofore receivable upon the exercise of this Warrant,
a number of shares of Common Stock determined by (a) dividing the Trigger Price
by a Pro Forma Adjusted Trigger Price per share to be computed as provided below
in this Paragraph 3, and (b) multiplying the resulting quotient by the number of
shares of Common Stock called for on the face of this Warrant. A Pro Forma
Adjusted Trigger Price per share shall be the price computed (to the nearest
cent, a fraction of half cent or more being considered a full cent):

            by dividing (i) the sum of (x) the result obtained by multiplying
            the number of shares of Common Stock of the Company outstanding
            immediately prior to such issue or sale by the Trigger Price (or, if
            a Pro Forma Adjusted Trigger Price shall be in effect, by such
            Price), and (y) the consideration, if any, received by the Company
            upon such issue or sale by (ii) the number of shares of Common Stock
            of the Company outstanding immediately after such issue or sale.

For the purpose of this Paragraph 3:

      3.1 Stock Splits, Dividends, etc., in Common Stock or Convertible
Securities. In case the Company splits its Common Stock or shall declare any
dividend, or make any other distribution, upon any stock of the Company of any
class payable in Common Stock, or in any stock or other securities directly or
indirectly convertible into or exchangeable for Common Stock (any such stock or
other securities being hereinafter called "Convertible Securities"), such split,
declaration or distribution shall be deemed to be an issue or sale (as of the
record date for such split,


                                Page 100 of 149
<PAGE>

dividend or other distribution), without consideration, of such Common Stock or
such Convertible Securities, as the case may be.

      3.2 Issuance or Sale of Convertible Securities. In case the Company shall
issue or sell any Convertible Securities other than the Subject Securities,
there shall be determined the price per share for which Common Stock is issuable
upon the conversion or exchange thereof, such determination to be made by
dividing (a) the total amount received or receivable by the Company as
consideration for the issue or sale of such Convertible Securities, plus the
minimum aggregate amount of additional consideration, if any, payable to the
Company upon the conversion or exchange thereof, by (b) the maximum number of
shares of Common Stock of the Company issuable upon the conversion or exchange
of all such Convertible Securities.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then such issue or sale shall
be deemed to be an issue or sale for cash (as of the date of issue or sale of
such Convertible Securities) of such maximum number of shares of Common Stock at
the price per share so determined, provided that, if such Convertible Securities
shall by their terms provide for an increase or increases, with the passage of
time, in the amount of additional consideration, if any, payable to the Company,
or in the rate of exchange, upon the conversion or exchange thereof, the Pro
Forma Adjusted Trigger Price per share shall, forthwith upon any such increase
becoming effective, be readjusted to reflect the same, and provided, further,
that upon the expiration of such rights of conversion or exchange of such
Convertible Securities, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so issued or sold were those
issued or sold upon the conversion or exchange of such Convertible Securities,
and that they were issued or sold for the consideration actually received by the
Company upon such conversion or exchange, plus the consideration, if any,
actually received by the Company for the issue or sale of all such Convertible
Securities which shall have been converted or exchanged.

      3.3 Grant of Rights or Options for Common Stock. In case the Company shall
grant any rights or options to subscribe for, purchase or otherwise acquire
Common Stock of any class other than the Subject Securities, there shall be
determined the price per share for which Common Stock is issuable upon the
exercise of such rights or options, such determination to be made by dividing
(a) the total amount, if any, received or receivable by the Company as
consideration for the granting of such rights or options, plus the minimum
aggregate amount of additional consideration, if any, payable to the Company
upon the exercise of such rights or options, by (b) the maximum number of shares
of Common Stock issuable upon the exercise of such rights or options.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then the granting of such
rights or options shall be deemed to be an issue or sale for cash (as of the
date of the granting of such rights or options) of such maximum number of shares
of Common Stock at the price per share so determined, provided that, if such
rights or options shall by their terms provide for an increase or increases,
with the passage of time, in the amount of additional consideration, if any,
payable to the Company upon the exercise thereof, the Pro Forma Adjusted Trigger
Price per share shall, forthwith upon any such increase becoming effective, be
readjusted to reflect the same, and provided, further, that upon the expiration
of


                                Page 101 of 149
<PAGE>

such rights or options, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so issued or sold were those
issued or sold upon the exercise of such rights or options and that they were
issued or sold for the consideration actually received by the Company upon such
exercise, plus the consideration, if any, actually received by the Company for
the granting of all such rights or options, whether or not exercised.

      3.4 Grant of Rights or Options for Convertible Securities. In case the
Company shall grant any rights or options to subscribe for, purchase or
otherwise acquire Convertible Securities other than the Subject Securities, such
Convertible Securities shall be deemed, for the purposes of subparagraph 3.2.
above, to have been issued or sold for the total amount received or receivable
by the Company as consideration for the granting of such rights or options plus
the minimum aggregate amount of additional consideration, if any, payable to the
Company upon the exercise of such rights or options, provided that, upon the
expiration of such rights or options, if any thereof shall not have been
exercised, the Pro Forma Adjusted Trigger Price per share shall forthwith be
readjusted and thereafter be the price which it would have been had an
adjustment been made upon the basis that the only Convertible Securities so
issued or sold were those issued or sold upon the exercise of such rights or
options and that they were issued or sold for the consideration actually
received by the Company upon such exercise, plus the consideration, if any,
actually received by the Company for the granting of all such rights or options,
whether or not exercised.

      3.5 Dilution in Case of Other Stock or Securities. In case any shares of
stock or other securities, other than Common Stock of the Company, shall at any
time be receivable upon the exercise of this Warrant, and in case any additional
shares of such stock or any additional such securities (or any stock or other
securities convertible into or exchangeable for any such stock or securities)
shall be issued or sold for a consideration per share such as to dilute the
purchase rights evidenced by this Warrant, then and in each such case the Pro
Forma Adjusted Trigger Price per share shall forthwith be adjusted,
substantially in the manner provided for above in this Paragraph 3, so as to
protect the Holder of this Warrant against the effect of such dilution.

      3.6 Expenses, etc., Deducted. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for cash, the consideration received therefor shall be deemed to be the
amount received by the Company therefor, after deducting any expenses incurred
and any underwriting or similar commissions, compensation or concessions paid or
allowed by the Company in connection with such issue or sale.

      3.7 Determination of Consideration. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for a consideration other than cash (or a consideration which includes cash
and other assets) then, for the purpose of this Paragraph 3, the Board of
Directors of the Company shall promptly determine the fair value of such
consideration, and such Common Stock, Convertible Securities, rights or options
shall be deemed to have been issued or sold on the date of such determination in
good faith. Such value shall not be more than the amount at which such
consideration is recorded in the books of the Company for accounting purposes
except in the case of an acquisition accounted for on a pooling of interest
basis. In case any Common Stock or Convertible Securities or any rights or
options to


                                Page 102 of 149
<PAGE>

subscribe for, purchase or otherwise acquire any Common Stock or Convertible
Securities shall be issued or sold together with other stock or securities or
other assets of the Company for a consideration which covers both, the Board of
Directors of the Company shall promptly determine in good faith what part of the
consideration so received is to be deemed to be the consideration for the issue
or sale of such Common Stock or Convertible Securities or such rights or
options.

            The Company covenants and agrees that, should any determination of
fair value of consideration or of allocation of consideration be made by the
Board of Directors of the Company, pursuant to this subparagraph 3.7, it will,
not less than seven (7) days after any and each such determination, deliver to
the Holder of this Warrant a certificate signed by the President or a Vice
President and the Treasurer or an Assistant Treasurer of the Company reciting
such value as thus determined and setting forth the nature of the transaction
for which such determination was required to be made, the nature of any
consideration, other than cash, for which Common Stock, Convertible Securities,
rights or options have been or are to be issued, the basis for its valuation,
the number of shares of Common Stock which have been or are to be issued, and a
description of any Convertible Securities, rights or options which have been or
are to be issued, including their number, amount and terms.

      3.8 Record Date Deemed Issue Date. In case the Company shall take a record
of the Holders of shares of its stock of any class for the purpose of entitling
them (a) to receive a dividend or a distribution payable in Common Stock or in
Convertible Securities, or (b) to subscribe for, purchase or otherwise acquire
Common Stock or Convertible Securities, then such record date shall be deemed to
be the date of the issue or sale of the Common Stock issued or sold or deemed to
have been issued or sold upon the declaration of such dividend or the making of
such other distribution, or the date of the granting of such rights of
subscription, purchase or other acquisition, as the case may be.

      3.9 Shares Considered Outstanding. The number of shares of Common Stock
outstanding at any given time shall include shares issuable in respect of scrip
certificates issued in lieu of fractions of shares of Common Stock, but shall
exclude shares in the treasury of the Company.

      3.10 Duration of ProForma Adjusted Trigger Price. Following each
computation or readjustment of a Pro Forma Adjusted Trigger Price as provided in
this Paragraph 3, the newly computed or adjusted Pro Forma Adjusted Trigger
Price shall remain in effect until a further computation or readjustment thereof
is required by this Paragraph 3.

      4. ADJUSTMENT FOR DIVIDENDS IN OTHER STOCK, PROPERTY, ETC.;
RECLASSIFICATIONS, ETC. In case at any time or from time to time after the
Issuance Date the Holders of the Common Stock of the Company of any class (or
any other shares of stock or other securities at the time receivable upon the
exercise of this Warrant) shall have received, or, on or after the record date
fixed for the determination of eligible stockholders, shall have become entitled
to receive:

            (a)   other or additional stock or other securities or property
                  (other than cash) by way of dividend;

            (b)   any cash paid or payable out of capital or paid-in surplus or
                  surplus created as a result of a revaluation of property by
                  way of dividend; or


                                Page 103 of 149
<PAGE>

            (c)   other or additional (or less) stock or other securities or
                  property (including cash) by way of stock-split, spin-off,
                  split-off, split-up, reclassification, combination of shares
                  or similar corporate rearrangement;

(other than additional shares of Common Stock issued to holders of Common Stock
as a stock dividend or stock-split, adjustments in respect of which shall be
covered by the provisions of Paragraph 3 hereof), then in each case the Holder
of this Warrant, upon the exercise hereof as provided in Paragraph 1 hereof,
shall be entitled to receive, in lieu of, or in addition to, as the case may be,
the shares theretofore receivable upon the exercise of this Warrant, the amount
of stock or other securities or property (including cash in the cases referred
to in clauses (b) and (c) above) which such Holder would hold on the date of
such exercise if, on the Issuance Date, he had been the holder of record of the
number of shares of Common Stock of the Company called for on the face of this
Warrant and had thereafter, during the period from the Issuance Date to and
including the date of such exercise, retained such shares and/or all other or
additional (or less) stock or other securities or property (including cash in
the cases referred to in clauses (b) and (c) above) receivable by him as
aforesaid during such period, giving effect to all adjustments called for during
such period by Paragraphs 3 and 5 hereof.

      5. ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER, ETC. In case of
any reorganization of the Company (or any other corporation the stock or other
securities of which are at the time deliverable on the exercise of this Warrant)
after the date hereof, or in case, after such date, the Company (or any such
other corporation) shall consolidate with or merge into another corporation or
convey all or substantially all its assets to another corporation, then and in
each such case the Holder of this Warrant, upon the exercise hereof as provided
in Paragraph 1 hereof, at any time after the consummation such reorganization,
consolidation, merger or conveyance, shall be entitled to receive the stock or
other securities or property to which such Holder would have been entitled upon
such consummation if such Holder had exercised this Warrant immediately prior
thereto, all subject to further adjustments as provided in Paragraphs 3 and 4
hereof; in each such case, the terms of this Warrant shall be applicable to the
shares of stock or other securities or property receivable upon the exercise of
this Warrant after such consummation.

      6. NO DILUTION OR IMPAIRMENT. The Company will not, by amendment of its
charter or through reorganization, consolidation, merger, dissolution, sale of
assets or any other voluntary action, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
action as may be necessary or appropriate in order to protect the rights of the
Holder hereof against dilution or other impairment. Without limiting the
generality of the foregoing, the Company will not increase the par value of any
shares of stock receivable upon the exercise of this Warrant above the amount
payable therefor upon such exercise, and at all times will take all such action
as may be necessary or appropriate in order that the Company may validly and
legally issue fully paid and non-assessable stock upon the exercise of this
Warrant.

      7. ACCOUNTANTS' CERTIFICATE AS TO ADJUSTMENTS. In each case of an
adjustment in the number of shares of Common Stock or other stock, securities or
property receivable on the exercise of this Warrant, at the request of the
Holder of this Warrant the Company at its expense shall promptly cause
independent public accountants of recognized standing, selected by the Company,
to compute such adjustment in accordance with the terms of this Warrant and
prepare a certificate setting forth such adjustment and showing in detail the


                                Page 104 of 149
<PAGE>

facts upon which such adjustment is based, including a statement of (a) the
consideration received or to be received by the Company for any additional
shares issued or sold or deemed to have been issued or sold, (b) the number of
shares of Common Stock outstanding or deemed to be outstanding and (c) the Pro
Forma Adjusted Trigger Price. The Company will forthwith mail a copy of each
such certificate to the Holder of this Warrant.

      8. NOTICES OF RECORD DATE, ETC. In case:

            (a)   the Company shall take a record of the Holders of its Common
                  Stock (or other stock or securities at the time deliverable
                  upon the exercise of this Warrant) for the purpose of
                  entitling or enabling them to receive any dividend (other than
                  a cash or stock dividend at the same rate as the rate of the
                  last cash or stock dividend theretofore paid) or other
                  distribution, or to exercise any preemptive right pursuant to
                  the Company's charter, or to receive any right to subscribe
                  for or purchase any shares of stock of any class or any other
                  securities, or to receive any other right; or

            (b)   of any capital reorganization of the Company, any
                  reclassification of the capital stock of the Company, any
                  consolidation or merger of the Company with or into another
                  corporation, or any conveyance of all or substantially all of
                  the assets of the Company to another corporation; or

            (c)   of the voluntary or involuntary dissolution, liquidation or
                  winding up of the Company;

then, and in each such case, the Company will mail or cause to be mailed to the
Holder of this Warrant a notice specifying, as the case may be, (i) the date on
which a record is to be taken for the purpose of such dividend, distribution or
right, and stating the amount and character of such dividend, distribution or
right, or (ii) the date on which such reorganization, reclassification,
consolidation, merger, conveyance, dissolution, liquidation or winding up is to
take place, and the times, if any is to be fixed, as of which the holders of
record of Common Stock (or such other stock or securities at the time
deliverable upon the exercise of this Warrant) shall be entitled to exchange
their shares of Common Stock of any class (or such other stock or securities)
for reclassification, consolidation, merger, conveyance, dissolution,
liquidation or winding up or (iii) the amount and character of the stock or
other securities proposed to be issued or granted, the date of such proposed
issuance or grant and the persons or class of persons to whom such stock or
other securities are to be offered, issued or granted. Such notice shall be
mailed at least thirty (30) days prior to the date therein specified.

      9. RESERVATION OF STOCK, ETC., ISSUABLE ON EXERCISE OF WARRANTS. The
Company will at all times reserve and keep available, solely for issuance and
delivery upon the exercise of this Warrant and other similar Warrants, such
shares of Common Stock and other stock, securities and property as from time to
time shall be issuable upon the exercise of this Warrant and all other similar
Warrants at the time outstanding.

      10. REPLACEMENT OF WARRANT. Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement in an amount reasonably satisfactory to it, or (in the case
of mutilation) upon surrender and cancellation thereof, the Company will issue,
in lieu thereof, a new Warrant of like tenor.


                                Page 105 of 149
<PAGE>

      11. REMEDIES. The Company stipulates that the remedies at law of the
Holder of this Warrant in the event of any default by the Company in its
performance of or compliance with any of the terms of this Warrant are not and
will not be adequate, and that the same may be specifically enforced.

      12. NEGOTIABILITY, ETC. This Warrant is issued upon the following terms,
to all of which each taker or owner hereof consents and agrees:

            (a)   Title to this warrant may be transferred by endorsement (by
                  the Holder hereof executing the form of assignment at the end
                  hereof including guaranty of signature) and delivery in the
                  same manner as in the case of a negotiable instrument
                  transferable by endorsement and delivery.

            (b)   Any person in possession of this Warrant properly endorsed is
                  authorized to represent himself as absolute owner hereof and
                  is granted power to transfer absolute title hereto by
                  endorsement and delivery hereof to a bona fide purchaser
                  hereof for value; each prior taker or owner waives and
                  renounces all of his equities or rights in this Warrant in
                  favor of every such bona fide purchaser, and every such bona
                  fide purchaser shall acquire title hereto and to all rights
                  represented hereby.

            (c)   Until this Warrant is transferred on the books of the Company,
                  the Company may treat the registered Holder of this Warrant as
                  the absolute owner hereof for all purposes without being
                  affected by any notice to the contrary.

      13. SUBDIVISION OF RIGHTS. This Warrant (as well as any new warrants
issued pursuant to the provisions of this paragraph) is exchangeable, upon the
surrender hereof by the Holder hereof, at the principal office of the Company
for any number of new warrants of like tenor and date representing in the
aggregate the right to subscribe for and purchase the number of shares of Common
Stock of the Company which may be subscribed for and purchased hereunder.

      14. REGISTRATION RIGHTS.

            a. Registration. On or prior to October 27, 1997, the Company will
file a registration statement ("Registration Statement") with the Securities and
Exchange Commission ("SEC") covering (x) the Warrants, and (y) the shares of
Common Stock issuable upon exercise of the Warrants (and covering such other
securities as the Company shall determine in its sole discretion) (collectively
"Registrable Securities"), and will use its best efforts to cause the
Registration Statement to become effective on or prior to the ninetieth day
after such filing and to keep the Registration Statement effective until the
earlier of (i) seven years from the date it is declared effective by the SEC, or
(ii) the, sale of all of the Registrable Securities.

            b. Additional Terms. Except as otherwise expressly stated herein,
the following provisions shall be applicable to the Registration Statement:

                  (i) The Company will use its best efforts to cause the
      Registration Statement to become effective as promptly as possible, and if
      any stop order shall be issued by the SEC in connection therewith to use
      its reasonable efforts to obtain the


                                Page 106 of 149
<PAGE>

      removal of such order. Following the effective date of the Registration
      Statement, the Company shall, upon the request of the Holder, forthwith
      supply such reasonable number of copies of the Registration Statement,
      preliminary prospectus and prospectus meeting the requirements of the
      Securities Act of 1933, as amended (the "Securities Act"), and other
      documents necessary or incidental to a public offering of the Registrable
      Securities, as shall be reasonably requested by the Holder to permit the
      Holder to make a public distribution of its, his or her Registrable
      Securities; provided, however, that by accepting this Warrant, the Holder
      agrees, if requested by the managing underwriter(s) in connection with an
      underwritten public offering of the Company's equity securities, to enter
      into a customary agreement with such managing underwriter(s) not to offer
      for sale or sell its, his or her Registrable Securities for up to 180 days
      after such offering. The Company will use its reasonable efforts to
      qualify the Registrable Securities for sale in such states as the Holder
      of Registrable Securities shall reasonably request, provided that no such
      qualification will be required in any jurisdiction where, solely as a
      result thereof, the Company would be subject to service of general process
      or to taxation or qualification as a foreign corporation doing business in
      such jurisdiction. The obligations of the Company hereunder with respect
      to the Holder's Registrable Securities are expressly conditioned on the
      Holder's furnishing to the Company such appropriate information concerning
      the Holder, the Holder's Registrable Securities and the terms of the
      Holders offering of such Registrable Securities as the Company may
      reasonably request.

                  (ii) The Company shall pay all expenses incurred in complying
      with the provisions of this Paragraph 14, including, without limitation,
      all registration and filing fees (including all expenses incident to
      filing with the National Association of Securities Dealers, Inc.),
      printing expenses, fees and disbursements of counsel to the Company,
      securities law and blue sky fees and expenses and the expenses of any
      regular and special audits incident to or required by any such
      registration. All underwriting discounts and selling commissions
      applicable to the sales of the Registrable Securities, and any state or
      federal transfer taxes payable with respect to the sales of the
      Registrable Securities and all fees and disbursements of counsel for the
      Holder, if any, in each case arising in connection with registration of
      the Registrable Securities shall be payable by the Holder.

                  (iii) In connection with the registration of the Registrable
      Securities pursuant to this Paragraph 14, the Company shall indemnify and
      hold harmless the Holder, its affiliates, officers, directors, partners,
      employees, agents and representatives, each person, if any, who controls
      the Holder within the meaning of the Securities Act or the Securities
      Exchange Act of 1934, as amended (the "Exchange Act"), any person deemed
      to be an underwriter of the Registrable Securities and any person claiming
      by or through any of them (collectively, the "Indemnified Persons") from
      and against all losses, claims, damages, expenses or liabilities (or
      actions in respect thereof) arising out of or are based upon any untrue
      statement of any material fact contained in the Registration Statement or
      alleged untrue statement, under which such securities were registered
      under the Securities Act, any preliminary prospectus or final prospectus
      contained therein, or any amendment or supplement thereto, or arise out of
      or are based upon the omission to state therein a material fact required
      to be stated therein or necessary to make the statements made therein, in
      light of the circumstances under which they are made, not misleading, or
      any violation by the Company of the Securities Act, the Exchange Act or
      state securities or blue sky laws applicable to the Company and relating
      to action or


                                Page 107 of 149
<PAGE>

      inaction required of the Company in connection with such registration or
      qualification under such state securities or blue sky laws; and will
      reimburse the Indemnified Persons for any legal or any other expenses
      reasonably incurred by them in connection with investigating or defending
      any such loss, claim, damage, liability or action; provided, however, that
      the Company will not be liable in any such case to any Indemnified Person
      to the extent that any such loss, claim, damage or liability arises out of
      or is based upon an untrue statement or omission made in the Registration
      Statement, said preliminary prospectus or said final prospectus or said
      amendment or supplement or any document incident thereto in reliance upon
      and in conformity with written information furnished to the Company by or
      on behalf of the Holder.

                  (iv) The Holder will indemnify and hold harmless the Company
      and each person, if any, who controls the Company within the meaning of
      the Securities Act or the Exchange Act, each officer of the Company who
      signs the Registration Statement and each director of the Company from and
      against any and all such losses, claims, damages or liabilities arising
      from any untrue statement in, or omission from, the Registration
      Statement, any such preliminary or final prospectus, amendment, or
      supplement or document incident thereto if the statement or omission in
      respect of which such loss, claim, damage or liability is asserted was
      made in reliance upon and in conformity with information furnished in
      writing to the Company by or on behalf of the Holder for use in connection
      with the preparation of the Registration Statement or such prospectus or
      amendment or supplement thereof.

                  (v) The reimbursements required by clauses (iii) and (iv)
      shall be made by periodic payments during the course of the investigation
      or defense as and when bills are received or expenses incurred; provided,
      however, that to the extent that an indemnified party receives periodic
      payments for legal or other expenses during the course of an investigation
      or defense, and such party subsequently received payments for such
      expenses from any other parties to the proceeding, such payments shall be
      used by the indemnified party to reimburse the indemnifying party for such
      periodic payments. Any party which proposes to assert the right to be
      indemnified under clause (iii) or (iv) will, promptly after receipt of
      notice of commencement of any action, suit or proceeding against such
      party in respect of which a claim is to be made against any indemnified
      party hereunder, notify each such indemnifying party of the commencement
      of such action, suit or proceeding, enclosing a copy of all papers served,
      but the failure to so notify such indemnifying party of any such action,
      suit or proceeding shall not relieve the indemnifying party from any
      obligation which it may have to any indemnified party hereunder unless and
      only to the extent that the indemnifying party is prejudiced by said lack
      of notice. In case any such action, suit or proceeding shall be brought
      against any indemnified party and it shall notify the indemnifying party
      of the commencement thereof, the indemnifying party shall be entitled to
      participate in and, to the extent that it shall wish, jointly with any
      other indemnifying party similarly notified, to assume the defense
      thereof, with counsel satisfactory to such indemnified party, and after
      notice from the indemnifying party to such indemnified party of its
      election so to assume the defense thereof, the indemnifying party shall
      not be liable to such indemnified party for any legal or other expense,
      other than reasonable costs of investigation subsequently incurred by such
      indemnified party in connection with the defense thereof. The indemnified
      party shall have the right to employ its own counsel in any such action,
      but the reasonable fees and expenses of such counsel shall be at the
      expense of such indemnified party, when and


                                Page 108 of 149
<PAGE>

      as incurred, unless (A) the employment of counsel by such indemnified
      party has been authorized by the indemnifying party, (B) the indemnified
      party has reasonably concluded (based on advice of counsel), that there
      may be legal defenses available to it that are different from or in
      addition to those available to the indemnifying party, (C) the indemnified
      party shall have reasonably concluded (based on advice of counsel) that
      there may be a conflict of interest between the indemnifying party and the
      indemnified party in the conduct of defense of such action (in which case
      the indemnifying party shall not have the right to direct the defense of
      such action on behalf of the indemnified party), or (D) the indemnifying
      party shall not in fact have employed counsel to assume the defense of
      such action within 15 days after receipt of notice of such action. An
      indemnifying party shall not be liable for any settlement or any action or
      claim effected without its consent, which shall not be unreasonably
      withheld.

                  (vi) If the indemnification provided for in this Paragraph 14
      is unavailable to any indemnified party hereunder in respect of any
      losses, claims, damages, liabilities or expenses referred to therein, then
      the indemnifying party, in lieu of indemnifying such indemnified party,
      shall contribute to the amount paid or payable by such indemnified party
      as a result of such losses, claims, damages, liabilities or expenses in
      such proportion as is appropriate to reflect the relative fault of the
      indemnifying party and indemnified parties in connection with the actions
      that resulted in such losses, claims, damages, liabilities or expenses, as
      well as any other relevant equitable considerations. The relative fault of
      such indemnifying party and indemnified parties shall be determined by
      reference to, among other things, whether any action in question,
      including any untrue or alleged untrue statement of a material fact or
      omission or alleged omission to state a material fact, has been made by,
      or relates to information supplied by, such indemnifying, party or
      indemnified parties, and the parties' relative intent, knowledge, access
      to information and opportunity to correct or prevent such action. The
      amount paid or payable by a party as a result of the losses, claims,
      damages, liabilities and expenses referred to above shall be deemed to
      include, subject to the limitations set forth herein, any legal or other
      fees or expenses reasonably incurred by such party in connection with any
      investigation or proceeding.

                  (vii) The Company and the Holder agree that it would not be
      just and equitable if contribution pursuant to clause (vi) were determined
      by pro rata allocation or by any other method of allocation that does not
      take account of the equitable considerations referred to in the
      immediately preceding paragraph. Notwithstanding any other provision
      hereof, in no event shall the contribution obligation of the Holder be
      greater in amount than the excess of (A) the dollar amount of proceeds
      received by the Holder upon the sale of the securities giving rise to such
      contribution obligation over (B) the dollar amount of any damages that the
      Holder has otherwise been required to pay by reason of the untrue or
      alleged untrue statement or omission or alleged omission giving rise to
      such obligation. No person guilty of fraudulent misrepresentation (within
      the meaning of Section 1l(f) of the Securities Act) shall be entitled to
      contribution from any person who was not guilty of such fraudulent
      misrepresentation.

                  (viii) Neither the filing of the Registration Statement by the
      Company pursuant to this Agreement nor the making of any request for
      prospectuses by the Holder shall impose upon the Holder any obligation to
      exercise his, her or its Warrants or to sell his, her or its Registrable
      Securities.


                                Page 109 of 149
<PAGE>

                  (ix) The Holder, upon receipt of notice from the Company that
      an event has occurred which requires a post-effective amendment to the
      Registration Statement or a supplement to the prospectus included therein,
      shall promptly discontinue the sale of his, her or its Registrable
      Securities until the Holder receives a copy of a supplemented or amended
      prospectus from the Company, which the Company shall provide as soon as
      practicable after such notice.

      15. MAILING OF NOTICES, ETC. All notices, requests, claims, demands,
waivers and other communications hereunder shall be in writing and shall be
deemed to have been duly given when delivered by hand, when delivered by
courier, three days after being deposited in the mail (registered or certified
mail, postage prepaid, return receipt requested), or when received by facsimile
transmission upon receipt of a confirmed transmission report, as follows:

If to the Company:      50 Orville Drive
                        Bohemia, New York 11716
                        Tel: (516)784-4110
                        Fax: (516) 784-4132
                        Attention: Chief Executive Officer

and if to the Holder of this Warrant to the address furnished to the Company in
writing by the last Holder of this Warrant who shall have furnished an address
to the Company in writing. Either the Company or the Holder of this Warrant, by
notice given to the other parties hereto in accordance with this Section 15, may
change the address or facsimile transmission number to which such notice or
other communications are to be sent to such party.

      16. HEADINGS, ETC. The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect the meaning hereof.

      17. CHANGE, WAIVER, ETC. Neither this Warrant nor any term hereof may be
changed, waived, discharged or terminated orally but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.

      18. GOVERNING LAW. This Warrant shall be construed and enforced in
accordance with the laws of the State of New York.

                                             LOGIMETRICS, INC.


                                             By:
                                                -------------------------------

Dated: July 29,1997

Attest:



- -------------------------------


                                Page 110 of 149
<PAGE>

                 [To be signed only upon exercise of Warrant]

To LOGIMETRICS, INC.:

      The undersigned, the Holder of the within Series G Warrant, hereby
irrevocably elects to exercise the purchase right represented by such Warrant
for, and to purchase thereunder, __________ shares of Common Stock of
LOGIMETRICS, INC. and herewith makes payment of $________ therefor, and requests
that the certificates for such shares be issued in the name of, and be delivered
to, __________, whose address is _____________.

Dated:



- --------------------------------------



- --------------------------------------------------------------------------------
                             (Signature must conform in all respects to name of
                             Holder as specified on the face of the Warrant)

                                    Address:


- --------------------------------------------------------------------------------


                                Page 111 of 149
<PAGE>

                  [To be signed only upon transfer of Warrant]

            FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto ____________ the right represented by the within Series G Warrant
to purchase the ___________ shares of the Common Stock of LOGIMETRICS, INC. to
which the within Series G Warrant relates, and appoints _____________ attorney
to transfer said right on the books of LOGIMETRICS, INC. with full power of
substitution in the premises.

Dated:



- --------------------------------------



- --------------------------------------------------------------------------------
                             (Signature must conform in all respects to name of
                             Holder as specified on the face of the Warrant)

                                    Address:


- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

In the presence of



- --------------------------------------


                                Page 112 of 149



                                    EXHIBIT 8

                                FORM OF I WARRANT


                                Page 113 of 149
<PAGE>

                                                                       EXHIBIT 8

THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND CANNOT BE SOLD OR TRANSFERRED
UNLESS AND UNTIL THEY ARE SO REGISTERED OR UNLESS AN EXEMPTION UNDER SUCH ACT OR
LAWS IS AVAILABLE. THE TRANSFERABILITY OF THESE SECURITIES IS FURTHER SUBJECT TO
THE PROVISIONS OF A PURCHASE AGREEMENT DATED AS OF JULY 29, 1997 AMONG THE
COMPANY AND THE PURCHASERS NAMED THEREIN.

                                LOGIMETRICS, INC.

                    Common Stock Purchase Warrant - Series I

      LOGIMETRICS, INC. (the "Company"), a Delaware corporation, hereby
certifies that, for value received, Gerald B. Kramer, or assigns, is entitled,
subject to the terms set forth below, to purchase from the Company Nineteen
Thousand One Hundred Eighty Six (19,186) fully paid and non-assessable shares of
Common Stock, par value $.01 per share, of the Company (the "Common Stock"), at
a purchase price, subject to the provisions of Paragraph 3 hereof, of $1.125 per
share (the "Purchase Price") at any time prior to July 29, 2004. The number and
character of such shares are subject to adjustment as provided below, and the
term "Common Stock" shall mean, unless the context otherwise requires, the stock
or other securities or property at the time deliverable upon the exercise of
this Warrant.

      1. EXERCISE OF WARRANT. The purchase rights evidenced by this Warrant
shall be exercised by the holder hereof ("Holder") surrendering this Warrant,
with the form of subscription at the end hereof duly executed by such Holder, to
the Company at its office in Bohemia, New York (or such other office as may be
designated by the Company from time to time), accompanied by payment (in cash or
by certified or official bank check). This Warrant may be exercised for less
than the full number of shares of Common Stock at the time called for hereby, in
which case the number of shares receivable upon the exercise of this Warrant as
a whole, and the sum payable upon the exercise of this Warrant as a whole, shall
be proportionately reduced. Upon any such partial exercise, the Company at its
expense will forthwith issue to the Holder hereof a new Warrant or Warrants of
like tenor calling for the number of shares of Common Stock as to which rights
have not been exercised, such Warrant or Warrants to be issued in the name of
the Holder hereof or his nominee.

      2. DELIVERY OF STOCK CERTIFICATES ON EXERCISE. As soon as practicable
after the exercise of this Warrant and payment of the Purchase Price, and in any
event within five (5) business days thereafter, the Company, at its expense,
will cause to be issued in the name of and delivered to the Holder hereof a
certificate or certificates for the number of fully paid and non-assessable
shares of Common Stock or other securities or property to which such Holder
shall be entitled upon such exercise, plus, in lieu of any fractional share
interest to which such Holder would otherwise be entitled, cash equal to such
fraction multiplied by the then current market value of one full share of Common
Stock or other securities to which such Holder shall be so entitled.

      3. ADJUSTMENT FOR ISSUE OR SALE OF COMMON STOCK AT LESS THAN PURCHASE
PRICE. In case, at any time or from time to time after the date of issuance of
this Warrant ("Issuance Date"), the Company shall issue or sell shares of its
Common Stock (other


                                Page 114 of 149
<PAGE>

than any Common Stock issuable upon the exercise or conversion of (i) the
Company's Class A 13% Senior Subordinated Convertible Pay-in-Kind Debentures due
1999 (the "Debentures") (and any replacement Debenture or Debentures issued upon
transfer or exchange of the Debentures), (ii) any additional securities issued
in lieu of cash interest otherwise payable on the Debentures ("Accrued Interest
Debentures") (and any replacement Accrued Interest Debenture or Accrued Interest
Debentures issued upon transfer or exchange of the Accrued Interest Debentures),
(iii) the Company's Amended and Restated Class B 13% Convertible Senior
Subordinated Pay-in-Kind Debentures due 1999 (the "Class B Debentures") (and any
replacement Class B Debenture or Class B Debentures issued upon transfer or
exchange of the Class B Debentures), (iv) any additional securities issued in
lieu of cash interest otherwise payable on the Class B Debentures (the "Class B
Accrued Interest Debentures") (and any replacement Class B Accrued Interest
Debenture or Class B Accrued Interest Debentures issued upon transfer or
exchange of the Class B Accrued Interest Debentures), (v) securities outstanding
on the date hereof, (vi) awards made pursuant to the Company's Stock
Compensation Program, (vii) awards made pursuant to any incentive compensation
plan or arrangement approved by the Company's Board of Directors or by the
Compensation Committee of the Company's Board of Directors, (viii) the Company's
Series G Warrants, (ix) the Company's Series H Warrants, or (x) the Company's
Series I Warrants) (such securities, collectively, the "Subject Securities") for
a consideration per share less than fifty-two cents ($.52) per share (the
"Trigger Price") (or, if a Pro Forma Adjusted Trigger Price shall be in effect
as provided below in this Paragraph 3, then less than such Pro Forma Adjusted
Trigger Price per share), then and in each such case the Holder of this Warrant,
upon the exercise hereof as provided in Paragraph 1 hereof, shall be entitled to
receive, in lieu of the shares of Common Stock theretofore receivable upon the
exercise of this Warrant, a number of shares of Common Stock determined by (a)
dividing the Trigger Price by a Pro Forma Adjusted Trigger Price per share to be
computed as provided below in this Paragraph 3, and (b) multiplying the
resulting quotient by the number of shares of Common Stock called for on the
face of this Warrant. A Pro Forma Adjusted Trigger Price per share shall be the
price computed (to the nearest cent, a fraction of half cent or more being
considered a full cent):

            by dividing (i) the sum of (x) the result obtained by multiplying
            the number of shares of Common Stock of the Company outstanding
            immediately prior to such issue or sale by the Trigger Price (or, if
            a Pro Forma Adjusted Trigger Price shall be in effect, by such
            Price), and (y) the consideration, if any, received by the Company
            upon such issue or sale, by (ii) the number of shares of Common
            Stock of the Company outstanding immediately after such issue or
            sale.

For the purpose of this Paragraph 3:

      3.1 Stock Splits, Dividends, etc., in Common Stock or Convertible
Securities. In case the Company splits its Common Stock or shall declare any
dividend, or make any other distribution, upon any stock of the Company of any
class payable in Common Stock, or in any stock or other securities directly or
indirectly convertible into or exchangeable for Common Stock (any such stock or
other securities being hereinafter called "Convertible Securities"), such split,
declaration or distribution shall be deemed to be an issue or sale (as of the
record date for such split, dividend or other distribution), without
consideration, of such Common Stock or such Convertible Securities, as the case
may be.


                                Page 115 of 149
<PAGE>

      3.2 Issuance or Sale of Convertible Securities. In case the Company shall
issue or sell any Convertible Securities other than the Subject Securities,
there shall be determined the price per share for which Common Stock is issuable
upon the conversion or exchange thereof, such determination to be made by
dividing (a) the total amount received or receivable by the Company as
consideration for the issue or sale of such Convertible Securities, plus the
minimum aggregate amount of additional consideration, if any, payable to the
Company upon the conversion or exchange thereof, by (b) the maximum number of
shares of Common Stock of the Company issuable upon the conversion or exchange
of all such Convertible Securities.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then such issue or sale shall
be deemed to be an issue or sale for cash (as of the date of issue or sale of
such Convertible Securities) of such maximum number of shares of Common Stock at
the price per share so determined, provided that, if such Convertible Securities
shall by their terms provide for an increase or increases, with the passage of
time, in the amount of additional consideration, if any, payable to the Company,
or in the rate of exchange, upon the conversion or exchange thereof, the Pro
Forma Adjusted Trigger Price per share shall, forthwith upon any such increase
becoming effective, be readjusted to reflect the same, and provided, further,
that upon the expiration of such rights of conversion or exchange of such
Convertible Securities, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so issued or sold were those
issued or sold upon the conversion or exchange of such Convertible Securities,
and that they were issued or sold for the consideration actually received by the
Company upon such conversion or exchange, plus the consideration, if any,
actually received by the Company for the issue or sale of all such Convertible
Securities which shall have been converted or exchanged.

      3.3 Grant of Rights or Options for Common Stock. In case the Company shall
grant any rights or options to subscribe for, purchase or otherwise acquire
Common Stock of any class other than the Subject Securities, there shall be
determined the price per share for which Common Stock is issuable upon the
exercise of such rights or options, such determination to be made by dividing
(a) the total amount, if any, received or receivable by the Company as
consideration for the granting of such rights or options, plus the minimum
aggregate amount of additional consideration, if any, payable to the Company
upon the exercise of such rights or options, by (b) the maximum number of shares
of Common Stock issuable upon the exercise of such rights or options.

            If the price per share so determined shall be less than the Trigger
Price (or, if a Pro Forma Adjusted Trigger Price shall be in effect, less than
such Price) as of the date of such issue or sale, then the granting of such
rights or options shall be deemed to be an issue or sale for cash (as of the
date of the granting of such rights or options) of such maximum number of shares
of Common Stock at the price per share so determined, provided that, if such
rights or options shall by their terms provide for an increase or increases,
with the passage of time, in the amount of additional consideration, if any,
payable to the Company upon the exercise thereof, the Pro Forma Adjusted Trigger
Price per share shall, forthwith upon any such increase becoming effective, be
readjusted to reflect the same, and provided, further, that upon the expiration
of such rights or options, if any thereof shall not have been exercised, the Pro
Forma Adjusted Trigger Price per share shall forthwith be readjusted and
thereafter be the price which it would have been had an adjustment been made on
the basis that the only shares of Common Stock so


                                Page 116 of 149
<PAGE>

issued or sold were those issued or sold upon the exercise of such rights or
options and that they were issued or sold for the consideration actually
received by the Company upon such exercise, plus the consideration, if any,
actually received by the Company for the granting of all such rights or options,
whether or not exercised.

      3.4 Grant of Rights or Options for Convertible Securities. In case the
Company shall grant any rights or options to subscribe for, purchase or
otherwise acquire Convertible Securities other than the Subject Securities, such
Convertible Securities shall be deemed, for the purposes of subparagraph 3.2.
above, to have been issued or sold for the total amount received or receivable
by the Company as consideration for the granting of such rights or options plus
the minimum aggregate amount of additional consideration, if any, payable to the
Company upon the exercise of such rights or options, provided that, upon the
expiration of such rights or options, if any thereof shall not have been
exercised, the Pro Forma Adjusted Trigger Price per share shall forthwith be
readjusted and thereafter be the price which it would have been had an
adjustment been made upon the basis that the only Convertible Securities so
issued or sold were those issued or sold upon the exercise of such rights or
options and that they were issued or sold for the consideration actually
received by the Company upon such exercise, plus the consideration, if any,
actually received by the Company for the granting of all such rights or options,
whether or not exercised.

      3.5 Dilution in Case of Other Stock or Securities. In case any shares of
stock or other securities, other than Common Stock of the Company, shall at any
time be receivable upon the exercise of this Warrant, and in case any additional
shares of such stock or any additional such securities (or any stock or other
securities convertible into or exchangeable for any such stock or securities)
shall be issued or sold for a consideration per share such as to dilute the
purchase rights evidenced by this Warrant, then and in each such case the Pro
Forma Adjusted Trigger Price per share shall forthwith be adjusted,
substantially in the manner provided for above in this Paragraph 3, so as to
protect the Holder of this Warrant against the effect of such dilution.

      3.6 Expenses, etc. Deducted. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for cash, the consideration received therefor shall be deemed to be the
amount received by the Company therefor, after deducting any expenses incurred
and any underwriting or similar commissions, compensation or concessions paid or
allowed by the Company in connection with such issue or sale.

      3.7 Determination of Consideration. In case any shares of Common Stock or
Convertible Securities or any rights or options to subscribe for, purchase or
otherwise acquire any Common Stock or Convertible Securities shall be issued or
sold for a consideration other than cash (or a consideration which includes cash
and other assets) then, for the purpose of this Paragraph 3, the Board of
Directors of the Company shall promptly determine the fair value of such
consideration, and such Common Stock, Convertible Securities, rights or options
shall be deemed to have been issued or sold on the date of such determination in
good faith. Such value shall not be more than the amount at which such
consideration is recorded in the books of the Company for accounting purposes
except in the case of an acquisition accounted for on a pooling of interest
basis. In case any Common Stock or Convertible Securities or any rights or
options to subscribe for, purchase or otherwise acquire any Common Stock or
Convertible Securities shall be issued or sold together with other stock or
securities or other assets of the Company for a consideration which covers both,
the Board of Directors of the Company shall promptly


                                Page 117 of 149
<PAGE>

determine in good faith what part of the consideration so received is to be
deemed to be the consideration for the issue or sale of such Common Stock or
Convertible Securities or such rights or options.

            The Company covenants and agrees that, should any determination of
fair value of consideration or of allocation of consideration be made by the
Board of Directors of the Company, pursuant to this subparagraph 3.7, it will,
not less than seven (7) days after any and each such determination, deliver to
the Holder of this Warrant a certificate signed by the President or a Vice
President and the Treasurer or an Assistant Treasurer of the Company reciting
such value as thus determined and setting forth the nature of the transaction
for which such determination was required to be made, the nature of any
consideration, other than cash, for which Common Stock, Convertible Securities,
rights or options have been or are to be issued, the basis for its valuation,
the number of shares of Common Stock which have been or are to be issued, and a
description of any Convertible Securities, rights or options which have been or
are to be issued, including their number, amount and terms.

      3.8 Record Date Deemed Issue Date. In case the Company shall take a record
of the Holders of shares of its stock of any class for the purpose of entitling
them (a) to receive a dividend or a distribution payable in Common Stock or in
Convertible Securities, or (b) to subscribe for, purchase or otherwise acquire
Common Stock or Convertible Securities, then such record date shall be deemed to
be the date of the issue or sale of the Common Stock issued or sold or deemed to
have been issued or sold upon the declaration of such dividend or the making of
such other distribution, or the date of the granting of such rights of
subscription, purchase or other acquisition, as the case may be.

      3.9 Shares Considered Outstanding. The number of shares of Common Stock
outstanding at any given time shall include shares issuable in respect of scrip
certificates issued in lieu of fractions of shares of Common Stock, but shall
exclude shares in the treasury of the Company.

      3.10 Duration of Pro Forma Adjusted Trigger Price. Following each
computation or readjustment of a Pro Forma Adjusted Trigger Price as provided in
this Paragraph 3, the newly computed or adjusted Pro Forma Adjusted Trigger
Price shall remain in effect until a further computation or readjustment thereof
is required by this Paragraph 3.

      4. ADJUSTMENT FOR DIVIDENDS IN OTHER STOCK, PROPERTY, ETC.;
RECLASSIFICATIONS, ETC. In case at any time or from time to time after the
Issuance Date the Holders of the Common Stock of the Company of any class (or
any other shares of stock or other securities at the time receivable upon the
exercise of this Warrant) shall have received, or, on or after the record date
fixed for the determination of eligible stockholders, shall have become entitled
to receive:

            (a)   other or additional stock or other securities or property
                  (other than cash) by way of dividend;

            (b)   any cash paid or payable out of capital or paid-in surplus or
                  surplus created as a result of a revaluation of property by
                  way of dividend; or


                                Page 118 of 149
<PAGE>

            (c)   other or additional (or less) stock or other securities or
                  property (including cash) by way of stock-split, spin-off,
                  split-off, split-up, reclassification, combination of shares
                  or similar corporate rearrangement;

(other than additional shares of Common Stock issued to holders of Common Stock
as a stock dividend or stock-split, adjustments in respect of which shall be
covered by the provisions of Paragraph 3 hereof), then in each case the Holder
of this Warrant, upon the exercise hereof as provided in Paragraph 1 hereof,
shall be entitled to receive, in lieu of, or in addition to, as the case may be,
the shares theretofore receivable upon the exercise of this Warrant, the amount
of stock or other securities or property (including cash in the cases referred
to in clauses (b) and (c) above) which such Holder would hold on the date of
such exercise if, on the Issuance Date, he had been the holder of record of the
number of shares of Common Stock of the Company called for on the face of this
Warrant and had thereafter, during the period from the Issuance Date to and
including the date of such exercise, retained such shares and/or all other or
additional (or less) stock or other securities or property (including cash in
the cases referred to in clauses (b) and (c) above) receivable by him as
aforesaid during such period, giving effect to all adjustments called for during
such period by Paragraphs 3 and 5 hereof.

      5. ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER, ETC. In case of
any reorganization of the Company (or any other corporation the stock or other
securities of which are at the time deliverable on the exercise of this Warrant)
after the date hereof, or in case, after such date, the Company (or any such
other corporation) shall consolidate with or merge into another corporation or
convey all or substantially all its assets to another corporation, then and in
each such case the Holder of this Warrant, upon the exercise hereof as provided
in Paragraph 1 hereof, at any time after the consummation of such
reorganization, consolidation, merger or conveyance, shall be entitled to
receive the stock or other securities or property to which such Holder would
have been entitled upon such consummation if such Holder had exercised this
Warrant immediately prior thereto, all subject to further adjustments as
provided in Paragraphs 3 and 4 hereof; in each such case, the terms of this
Warrant shall be applicable to the shares of stock or other securities or
property receivable upon the exercise of this Warrant after such consummation.

      6. NO DILUTION OR IMPAIRMENT. The Company will not, by amendment of its
charter or through reorganization, consolidation, merger, dissolution, sale of
assets or any other voluntary action, avoid or seek to avoid the observance or
performance of any of the terms of this Warrant, but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
action as may be necessary or appropriate in order to protect the rights of the
Holder hereof against dilution or other impairment. Without limiting the
generality of the foregoing, the Company will not increase the par value of any
shares of stock receivable upon the exercise of this Warrant above the amount
payable therefor upon such exercise, and at all times will take all such action
as may be necessary or appropriate in order that the Company may validly and
legally issue fully paid and non-assessable stock upon the exercise of this
Warrant.

      7. ACCOUNTANTS' CERTIFICATE AS TO ADJUSTMENTS. In each case of an
adjustment in the number of shares of Common Stock or other stock, securities or
property receivable on the exercise of this Warrant, at the request of the
Holder of this Warrant the Company at its expense shall promptly cause
independent public accountants of recognized standing, selected by the Company,
to compute such adjustment in accordance with the terms of this Warrant and
prepare a certificate setting forth such adjustment and showing in detail the


                                Page 119 of 149
<PAGE>

facts upon which such adjustment is based, including a statement of (a) the
consideration received or to be received by the Company for any additional
shares issued or sold or deemed to have been issued or sold, (b) the number of
shares of Common Stock outstanding or deemed to be outstanding and (c) the Pro
Forma Adjusted Trigger Price. The Company will forthwith mail a copy of such
certificate to the Holder of this Warrant.

      8. NOTICES OF RECORD DATE, ETC. In case:

            (a)   the Company shall take a record of the Holders of its Common
                  Stock (or other stock or securities at the time deliverable
                  upon the exercise of this Warrant) for the purpose of
                  entitling or enabling them to receive any dividend (other than
                  a cash or stock dividend at the same rate as the rate of the
                  last cash or stock dividend theretofore paid) or other
                  distribution, or to exercise any preemptive right pursuant to
                  the Company's charter, or to receive any right to subscribe
                  for or purchase any shares of stock of any class or any other
                  securities, or to receive any other right; or

            (b)   of any capital reorganization of the Company, any
                  reclassification of the capital stock of the Company, any
                  consolidation or merger of the Company with or into another
                  corporation, or any conveyance of all or substantially all of
                  the assets of the Company to another corporation; or

            (c)   of the voluntary or involuntary dissolution, liquidation or
                  winding up of the Company;

then, and in each such case, the Company will mail or cause to be mailed to the
Holder of this Warrant a notice specifying, as the case may be, (i) the date on
which a record is to be taken for the purpose of such dividend, distribution or
right, and stating the amount and character of such dividend, distribution or
right, or (ii) the date on which such reorganization, reclassification,
consolidation, merger, conveyance, dissolution, liquidation or winding up is to
take place, and the times, if any is to be fixed, as of which the holders of
record of Common Stock (or such other stock or securities at the time
deliverable upon the exercise of this Warrant) shall be entitled to exchange
their shares of Common Stock of any class (or such other stock or securities)
for reclassification, consolidation, merger, conveyance, dissolution,
liquidation or winding up or (iii) the amount and character of the stock or
other securities proposed to be issued or granted, the date of such proposed
issuance or grant and the persons or class of persons to whom such stock or
other securities are to be offered, issued or granted. Such notice shall be
mailed at least thirty (30) days prior to the date therein specified.

      9. RESERVATION OF STOCK, ETC., ISSUABLE ON EXERCISE OF WARRANTS. The
Company will at all times reserve and keep available, solely for issuance and
delivery upon the exercise of this Warrant and other similar Warrants, such
shares of Common Stock and other stock, securities and property as from time to
time shall be issuable upon the exercise of this Warrant and all other similar
Warrants at the time outstanding.

      10. REPLACEMENT OF WARRANT. Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in case of loss theft or destruction) upon delivery of an
indemnity agreement in an amount reasonably satisfactory to it, or (in the case
of mutilation) upon surrender and cancellation thereof, the Company will issue,
in lieu thereof, a new Warrant of like tenor.


                                Page 120 of 149
<PAGE>

      11. REMEDIES. The Company stipulates that the remedies at law of the
Holder of this Warrant in the event of any default by the Company in its
performance of or compliance with any of the terms of this Warrant are not and
will not be adequate, and that the same may be specifically enforced.

      12. NEGOTIABILITY, ETC. This Warrant is issued upon the following terms,
to all of which each taker or owner hereof consents and agrees:

            (a)   Title to this warrant may be transferred by endorsement (by
                  the Holder hereof executing the form of assignment at the end
                  hereof including guaranty of signature) and delivery in the
                  same manner as in the case of a negotiable instrument
                  transferable by endorsement and delivery.

            (b)   Any person in possession of this Warrant properly endorsed is
                  authorized to represent himself as absolute owner hereof and
                  is granted power to transfer absolute title hereto by
                  endorsement and delivery hereof to a bona fide purchaser
                  hereof for value; each prior taker or owner waives and
                  renounces all of his equities or rights in this Warrant in
                  favor of every such bona fide purchaser, and every such bona
                  fide purchaser shall acquire title hereto and to all rights
                  represented hereby.

            (c)   Until this Warrant is transferred on the books of the Company,
                  the Company may treat the registered Holder of this Warrant as
                  the absolute owner hereof for all purposes without being
                  affected by any notice to the contrary.

      13. SUBDIVISION OF RIGHTS. This Warrant (as well as any new warrants
issued pursuant to the provisions of this paragraph) is exchangeable, upon the
surrender hereof by the Holder hereof, at the principal office of the Company
for any number of new warrants of like tenor and date representing in the
aggregate the right to subscribe for and purchase the number of shares of Common
Stock of the Company which may be subscribed for and purchased hereunder.

      14. REGISTRATION RIGHTS.

            a. Registration. On or prior to October 27, 1997, the Company will
file a registration statement ("Registration Statement") with the Securities and
Exchange Commission ("SEC") covering (x) the Warrants, and (y) the shares of
Common Stock issuable upon exercise of the Warrants (and covering such other
securities as the Company shall determine in its sole discretion) (collectively,
"Registrable Securities"), and will use its best efforts to cause the
Registration Statement to become effective on or prior to the ninetieth day
after such filing and to keep the Registration Statement effective until the
earlier of (i) seven years from the date it is declared effective by the SEC, or
(ii) the sale of all of the Registrable Securities.

            b. Additional Terms. Except as otherwise expressly stated herein,
the following provisions shall be applicable to the Registration Statement:

                  (i) The Company will use its best efforts to cause the
      Registration Statement to become effective as promptly as possible, and if
      any stop order shall be issued by the SEC in connection therewith to use
      its reasonable efforts to obtain the


                                Page 121 of 149
<PAGE>

      removal of such order. Following the effective date of the Registration
      Statement, the Company shall, upon the request of the Holder, forthwith
      supply such reasonable number of copies of the Registration Statement,
      preliminary prospectus and prospectus meeting the requirements of the
      Securities Act of 1933, as amended (the "Securities Act"), and other
      documents necessary or incidental to a public offering of the Registrable
      Securities, as shall be reasonably requested by the Holder to permit the
      Holder to make a public distribution of its, his or her Registrable
      Securities; provided, however, that by accepting this Warrant, the Holder
      agrees, if requested by the managing underwriter(s) in connection with an
      underwritten public offering of the Company's equity securities, to enter
      into a customary agreement with such managing underwriter(s) not to offer
      for sale or sell its, his or her Registrable Securities for up to 180 days
      after such offering. The Company will use its reasonable efforts to
      qualify the Registrable Securities for sale in such states as the Holder
      of Registrable Securities shall reasonably request, provided that no such
      qualification will be required in any jurisdiction where, solely as a
      result thereof, the Company would be subject to service of general process
      or to taxation or qualification as a foreign corporation doing business in
      such jurisdiction. The obligations of the Company hereunder with respect
      to the Holder's Registrable Securities are expressly conditioned on the
      Holder's furnishing to the Company such appropriate information concerning
      the Holder, the Holder's Registrable Securities and the terms of the
      Holder's offering of such Registrable Securities as the Company may
      reasonably request.

                  (ii) The Company shall pay all expenses incurred in complying
      with the provisions of this Paragraph 14, including, without limitation,
      all registration and filing fees (including all expenses incident to
      filing with the National Association of Securities Dealers, Inc.),
      printing expenses, fees and disbursements of counsel to the Company,
      securities law and blue sky fees and expenses and the expenses of any
      regular and special audits incident to or required by any such
      registration. All underwriting discounts and selling commissions
      applicable to the sales of the Registrable Securities, and any state or
      federal transfer taxes payable with respect to the sales of the
      Registrable Securities and all fees and disbursements of counsel for the
      Holder, if any, in each case arising in connection with registration of
      the Registrable Securities shall be payable by the Holder.

                  (iii) In connection with the registration of the Registrable
      Securities pursuant to this Paragraph 14, the Company shall indemnify and
      hold harmless the Holder, its affiliates, officers, directors, partners,
      employees, agents and representatives, each person, if any, who controls
      the Holder within the meaning of the Securities Act or the Securities
      Exchange Act of 1934, as amended (the "Exchange Act"), any person deemed
      to be an underwriter of the Registrable Securities and any person claiming
      by or through any of them (collectively, the "Indemnified Persons") from
      and against all losses, claims, damages, expenses or liabilities (or
      actions in respect thereof) arising out of or are based upon any untrue
      statement of any material fact contained in the Registration Statement or
      alleged untrue statement, under which such securities were registered
      under the Securities Act, any preliminary prospectus or final prospectus
      contained therein, or any amendment or supplement thereto, or arise out of
      or are based upon the omission to state therein a material fact required
      to be stated therein or necessary to make the statements made therein, in
      light of the circumstances under which they are made, not misleading, or
      any violation by the Company of the Securities Act, the Exchange Act or
      state securities or blue sky laws applicable to the Company and relating
      to action or inaction required of the Company in connection with such
      registration or qualification


                                Page 122 of 149
<PAGE>

      under such state securities or blue sky laws; and will reimburse the
      Indemnified Persons for any legal or any other expenses reasonably
      incurred by them in connection with investigating or defending any such
      loss, claim, damage, liability or action; provided, however, that the
      Company will not be liable in any such case to any Indemnified Person to
      the extent that any such loss, claim, damage or liability arises out of or
      is based upon an untrue statement or omission made in the Registration
      Statement, said preliminary prospectus or said final prospectus or said
      amendment or supplement or any document incident thereto in reliance upon
      and in conformity with written information furnished to the Company by or
      on behalf of the Holder.

                  (iv) The Holder will indemnify and hold harmless the Company
      and each person, if any, who controls the Company within the meaning of
      the Securities Act or the Exchange Act, each officer of the Company who
      signs the Registration Statement and each director of the Company from and
      against any and all such losses, claims, damages or liabilities arising
      from any untrue statement in, or omission from, the Registration
      Statement, any such preliminary or final prospectus, amendment, or
      supplement or document incident thereto if the statement or omission in
      respect of which such loss, claim, damage or liability is asserted was
      made in reliance upon and in conformity with information furnished in
      writing to the Company by or on behalf of the Holder for use in connection
      with the preparation of the Registration Statement or such prospectus or
      amendment or supplement thereof.

                  (v) The reimbursements required by clauses (iii) and (iv)
      shall be made by periodic payments during the course of the investigation
      or defense as and when bills are received or expenses incurred; provided,
      however, that to the extent that an indemnified party receives periodic
      payments for legal or other expenses during the course of an investigation
      or defense, and such party subsequently received payments for such
      expenses from any other parties to the proceeding, such payments shall be
      used by the indemnified party to reimburse the indemnifying party for such
      periodic payments. Any party which proposes to assert the right to be
      indemnified under clause (iii) or (iv) will, promptly after receipt of
      notice of commencement of any action, suit or proceeding against such
      party in respect of which a claim is to be made against any indemnified
      party hereunder, notify each such indemnifying party of the commencement
      of such action, suit or proceeding, enclosing a copy of all papers served,
      but the failure to so notify such indemnifying party of any such action,
      suit or proceeding shall not relieve the indemnifying party from any
      obligation which it may have to any indemnified party hereunder unless and
      only to the extent that the indemnifying party is prejudiced by said lack
      of notice. In case any such action, suit or proceeding shall be brought
      against any indemnified party and it shall notify the indemnifying party
      of the commencement thereof, the indemnifying party shall be entitled to
      participate in and, to the extent that it shall wish, jointly with any
      other indemnifying party similarly notified, to assume the defense
      thereof, with counsel satisfactory to such indemnified party, and after
      notice from the indemnifying party to such indemnified party of its
      election so to assume the defense thereof, the indemnifying party shall
      not be liable to such indemnified party for any legal or other expense,
      other than reasonable costs of investigation subsequently incurred by such
      indemnified party in connection with the defense thereof. The indemnified
      party shall have the right to employ its own counsel in any such action,
      but the reasonable fees and expenses of such counsel shall be at the
      expense of such indemnified party, when and as incurred, unless (A) the
      employment of counsel by such indemnified party has been


                                Page 123 of 149
<PAGE>

      authorized by the indemnifying party, (B) the indemnified party has
      reasonably concluded (based on advice of counsel), that there may be legal
      defenses available to it that are different from or in addition to those
      available to the indemnifying party, (C) the indemnified party shall have
      reasonably concluded (based on advice of counsel) that there may be a
      conflict of interest between the indemnifying party and the indemnified
      party in the conduct of defense of such action (in which case the
      indemnifying party shall not have the right to direct the defense of such
      action on behalf of the indemnified party), or (D) the indemnifying party
      shall not in fact have employed counsel to assume the defense of such
      action within 15 days after receipt of notice of such action. An
      indemnifying party shall not be liable for any settlement or any action or
      claim effected without its consent, which shall not be unreasonably
      withheld.

                  (vi) If the indemnification provided for in this Paragraph 14
      is unavailable to any indemnified party hereunder in respect of any
      losses, claims, damages, liabilities or expenses referred to therein, then
      the indemnifying party, in lieu of indemnifying such indemnified party,
      shall contribute to the amount paid or payable by such indemnified party
      as a result of such losses, claims, damages, liabilities or expenses in
      such proportion as is appropriate to reflect the relative fault of the
      indemnifying party and indemnified parties in connection with the actions
      that resulted in such losses, claims, damages, liabilities or expenses, as
      well as any other relevant equitable considerations. The relative fault of
      such indemnifying party and indemnified parties shall be determined by
      reference to, among other things, whether any action in question,
      including any untrue or alleged untrue statement of a material fact or
      omission or alleged omission to state a material fact, has been made by,
      or relates to information supplied by, such indemnifying party or
      indemnified parties, and the parties' relative intent, knowledge, access
      to information and opportunity to correct or prevent such action. The
      amount paid or payable by a party as a result of the losses, claims,
      damages, liabilities and expenses referred to above shall be deemed to
      include, subject to the limitations set forth herein, any legal or other
      fees or expenses reasonably incurred by such party in connection with any
      investigation or proceeding.

                  (vii) The Company and the Holder agree that it would not be
      just and equitable if contribution pursuant to clause (vi) were determined
      by pro rata allocation or by any other method of allocation that does not
      take account of the equitable considerations referred to in the
      immediately preceding paragraph. Notwithstanding any other provision
      hereof, in no event shall the contribution obligation of the Holder be
      greater in amount than the excess of (A) the dollar amount of proceeds
      received by the Holder upon the sale of the securities giving rise to such
      contribution obligation over (B) the dollar amount of any damages that the
      Holder has otherwise been required to pay by reason of the untrue or
      alleged untrue statement or omission or alleged omission giving rise to
      such obligation. No person guilty of fraudulent misrepresentation (within
      the meaning of Section 11(f) of the Securities Act) shall be entitled to
      contribution from any person who was not guilty of such fraudulent
      misrepresentation.

                  (viii) Neither the filing of the Registration Statement by the
      Company pursuant to this Agreement nor the making of any request for
      prospectuses by the Holder shall impose upon the Holder any obligation to
      sell his, her or its Registrable Securities.


                                Page 124 of 149
<PAGE>

                  (ix) The Holder, upon receipt of notice from the Company that
      an event has occurred which requires a post-effective amendment to the
      Registration Statement or a supplement to the prospectus included therein,
      shall promptly discontinue the sale of his, her or its Registrable
      Securities until the Holder receives a copy of a supplemented or amended
      prospectus from the Company, which the Company shall provide as soon as
      practicable after such notice.

      15. MAILING OF NOTICES, ETC. All notices, requests, claims, demands,
waivers and other communications hereunder shall be in writing and shall be
deemed to have been duly given when delivered by hand, when delivered by
courier, three days after being deposited in the mail (registered or certified
mail, postage prepaid, return receipt requested), or when received by facsimile
transmission upon receipt of a confirmed transmission report, as follows:

If to the Company:      50 Orville Drive
                        Bohemia, New York 11716
                        Tel: (516) 784-4110
                        Fax: (516) 784-4132
                        Attention: Chief Executive Officer

      and if to the Holder of this Warrant to the address furnished to the
      Company in writing by the last Holder of this Warrant who shall have
      furnished an address to the Company in writing. Either the Company or the
      Holder of this Warrant, by notice given to the other parties hereto in
      accordance with this Section 15, may change the address or facsimile
      transmission number to which such notice or other communications are to be
      sent to such party.

      16. HEADINGS, ETC. The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect the meaning hereof.

      17. CHANGE, WAIVER, ETC. Neither this Warrant nor any term hereof may be
changed, waived, discharged or terminated orally but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.

      18. GOVERNING LAW. This Warrant shall be construed and enforced in
accordance with the laws of the State of New York.

                                     LOGIMETRICS, INC.


                                     By:
                                        ----------------------------------

Dated: July 29, 1997

Attest:



- --------------------------------


                                Page 125 of 149
<PAGE>

                  [To be signed only upon exercise of Warrant]

To LOGIMETRICS, INC.:

      The undersigned, the Holder of the within Series I Warrant, hereby
irrevocably elects to exercise the purchase right represented by such Warrant
for, and to purchase thereunder, _______ shares of Common Stock of LOGIMETRICS,
INC. and herewith makes payment of $________ therefor, and requests that the
certificates for such shares be issued in the name of, and be delivered to,
________, whose address is _______________.

Dated:


- ---------------------------------



- --------------------------------------------------------------------------------
                                  (Signature must conform in all respects to
                                  name of Holder as specified on the face of the
                                  Warrant)

                                  Address:


- --------------------------------------------------------------------------------


                                Page 126 of 149
<PAGE>

                  [To be signed only upon transfer of Warrant]

      FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________ the right represented by the within Series I Warrant to
purchase the _______ shares of the Common Stock of LOGIMETRICS, INC. to which
the within Series I Warrant relates, and appoints _____________ attorney to
transfer said right on the books of LOGIMETRICS, INC. with full power of
substitution in the premises.

Dated:


- ---------------------------------



- --------------------------------------------------------------------------------
                                  (Signature must conform in all respects to
                                  name of Holder as specified on the face of the
                                  Warrant)

                                  Address:


- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

In the presence of



- ---------------------------------


                                Page 127 of 149



                                    EXHIBIT 9

                          REGISTRATION RIGHTS AGREEMENT


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<PAGE>

                                                                       EXHIBIT 9

                          REGISTRATION RIGHTS AGREEMENT

      REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of October __,
1998, among LogiMetrics, Inc., a Delaware corporation (the "Company"), and the
parties whose names appear on the signature pages hereof.

                              W I T N E S S E T H:

      WHEREAS, the Company and the parties hereto (the "Purchasers") have
entered into a Purchase Agreement of even date herewith (the "Purchase
Agreement") pursuant to which the Company has agreed to sell to such parties
$2,666,667 in aggregate principal amount of its Class C 13% Senior Subordinated
Debentures (the "Debentures"); and

      WHEREAS, the Debentures are convertible into shares (the "Debenture
Shares") of the Company's common stock, par value $.01 per share; and

      WHEREAS, the Company has agreed to effect the registration of Debenture
Shares on the terms and conditions set forth herein;

      NOW, THEREFORE, in consideration of the mutual covenants contained herein
and other good and valuable consideration, the receipt and sufficiency of which
is hereby acknowledged, and intending to be legally bound, the parties hereto
hereby agree as follows:

      1. Certain Definitions.

      For purposes of this Agreement, the following terms have the following
meanings when used herein:

      (a) "Affiliate" means, with respect to any Person, means any other Person
who directly or indirectly, through one or more intermediaries, controls, is
controlled by, or is under common control with, such Person. The term "control"
means the possession, directly or indirectly, of the power to direct or cause
the direction of the management and policies of a Person, whether through the
ownership of voting securities, by contract or otherwise, and the terms
"controlled" and "controlling" have meanings correlative thereto.

      (b) "Business Day" means any day other than a Saturday or Sunday on which
banking institutions in New York, New York are open for the general conduct of
business.

      (c) "Commission" means the Securities and Exchange Commission or any other
federal agency at the time administering the Securities Act.

      (d) "Common Stock" means the Common Stock, par value $.01 per share, of
the Company.

      (e) "Company" means LogiMetrics, Inc., a Delaware corporation, and its
successors and assigns.


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<PAGE>

      (f) "Demand Registration" means any registration of Registrable Securities
effected pursuant to Section 2.

      (g) "Effective Date" means the earlier of (i) September 1, 1999 and (ii)
the termination of the engagement letter, dated August 7, 1998, by and between
the Company and Donaldson Lufkin Jenrette Securities Corporation.

      (h) "Exchange Act" means the Securities Exchange Act of 1934, as amended
(or any similar successor federal statute), and the rules and regulations
thereunder, as in effect from time to time.

      (i) "Holders" means the Purchasers party to the Purchase Agreement or any
permitted transferees thereof holding Registrable Securities.

      (j) "Majority Registered Holders" means, in the case of any registration
statement, the Holders of a majority of the Registrable Securities proposed to
be covered in such registration statement (or that are actually so covered).

      (k) "Person" means any individual, partnership, corporation (including a
business trust), joint stock company, limited liability company, trust,
unincorporated association, joint venture, or other entity, or a government or
any political subdivision or agency.

      (l) "Piggyback Registration" means any registration of Registrable
Securities effected pursuant to Section 3.

      (m) "Registrable Securities" means (i) the Debenture Shares, and (ii) any
securities issued or issuable in respect of or in exchange for any of the
Debenture Shares by way of stock dividend or other distribution on the Common
Stock, stock split or combination of shares, recapitalization, reclassification
merger, consolidation or exchange offer. For purposes hereof, a Registrable
Security ceases to be a Registrable Security when either (x) it has been
effectively registered under the Securities Act and sold or distributed to any
Person pursuant to an effective registration statement covering it or (y) it has
been sold or distributed to any Person pursuant to Rule 144 or Rule 145(d).

      (n) "Registration" means any Demand Registration or Piggyback
Registration.

      (o) "Rule 10b-6" means Rule 10b-6 promulgated by the Commission under the
Exchange Act, as such Rule may be amended from time to time, or any similar
successor rule that may be promulgated by the Commission.

      (p) "Rule 144," "Rule 145" and "Rule 424" mean, respectively, Rule 144,
Rule 145 and Rule 424, each promulgated by the Commission under the Securities
Act, in each case as amended from time to time, or any similar successor rule
thereto that may be promulgated by the Commission.

      (q) "Securities Act" means the Securities Act of 1933, as amended (or any
similar successor federal statute), and the rules and regulations thereunder, as
the same are in effect from time to time.


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<PAGE>

      2. Demand Registrations.

      (a) At any time after the Effective Date and until the earlier of (i) the
date that all of the Registrable Securities may be freely resold by the Holders
thereof pursuant to Rule 144(k) and (ii) two years from the conversion of all of
the Debentures (the "Registration Rights Period"), upon written notice to the
Company from one or more Holders of Registrable Securities who held on the
Effective Date (together with their Affiliates at such time) in the aggregate
not less than 50% of the Debenture Shares (the Holders furnishing such written
notice being hereinafter referred to as the "Initiating Holders") requesting
that the Company effect, pursuant to this Section 2, the registration of any or
all of such Initiating Holders' Registrable Securities under the Securities Act
(which notice shall specify (A) the Registrable Securities so requested to be
registered, (B) the proposed amounts thereof (which in the aggregate shall equal
at least (x) 50% of the Debenture Shares, or (y) if such Registrable Securities
are all of the remaining Registrable Securities held by the Initiating Holders,
25% of the Debenture Shares), and (C) the intended method of disposition by such
Initiating Holders, including whether or not the proposed offering is to be
underwritten), the Company shall promptly (but in any event within 20 days) give
written notice of such requested registration to all Holders, and thereupon the
Company shall, as expeditiously as possible, use its best efforts to effect the
registration under the Securities Act of:

            (x) the Registrable Securities that the Initiating Holders have
      requested the Company to register, for disposition in accordance with the
      intended method of disposition stated in their notice to the Company; and

            (y) all other Registrable Securities the Holders of which shall have
      made a written request to the Company for registration thereof (which
      request shall specify such Registrable Securities and the proposed amounts
      thereof) within 30 days after the receipt of such written notice from the
      Company,

all to the extent requisite to permit the disposition (in accordance with the
method of disposition specified in the notice given to the Company by the
Initiating Holders) by Holders of the securities then constituting Registrable
Securities so to be registered.

      (b) Number of Demand Registrations: Duration: Sale of Registrable
Securities. Notwithstanding the provisions of Section 2(a), the Company shall
not be required to effect a Demand Registration pursuant to this Section 2: (i)
if a Demand Registration has previously been effected by the Company pursuant to
this Section 2 within one year of the date on which notice is given by the
Initiating Holders pursuant to Section 2(a); or (ii) if the Company shall
previously have effected two Demand Registrations; provided that a Demand
Registration shall not be deemed to have been effected for purposes of the
limitations of this Section 2(b) unless the applicable registration statement
was declared effective and kept effective until the earlier of (A) nine months
following the date on which it was declared effective and (B) the sale pursuant
thereto of all of the Registrable Securities covered thereby. A request from
Initiating Holders pursuant to Section 2(a) shall be deemed withdrawn upon
commencement of a Black-Out Period (as defined in Section 4(c)).

      (c) Inclusion of Other Securities. The Company shall not include
securities in any Demand Registration other than (i) Registrable Securities, and
(ii) securities entitled to


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<PAGE>

piggyback registration rights granted by the Company prior to the date hereof
without the prior written consent of the Majority Registered Holders which shall
not be unreasonably withheld or delayed.

      3. Piggyback Registrations.

      (a) Effective Registration. If prior to the end of the Registration Rights
Period the Company proposes to file a registration statement under the
Securities Act with respect to any class of equity securities (other than in
connection with the registration of equity securities issued or issuable
pursuant to a dividend reinvestment, employee stock option, stock purchase,
stock bonus or similar plan or pursuant to a merger, exchange offer or
transaction of the type specified in paragraph (a) of Rule 145) at any time,
then the Company shall give written notice of such proposed filing to the
Holders at least 20 days before the anticipated filing date, and such notice
shall offer the Holders the opportunity to register such amount of Registrable
Securities as each such Holder may request. The Company shall use its best
efforts to cause the managing underwriter or underwriters of a proposed
underwritten offering to permit the inclusion therein of any Registrable
Securities the Holders of which request, within 15 days after receiving written
notice of the proposed filing from the Company, such inclusion, at the same
initial public offering price and subject to the same underwriting discount and
commissions as any similar securities of the Company so included. Any Holder's
request for such inclusion may be withdrawn, in whole or in part, at any time
prior to the effective date of the registration statement for such offering.

      (b) Number of Piggyback Registrations: Duration: Sale of Registrable
Securities. Notwithstanding the provisions of Section 3(a) but subject to the
second proviso to Section 3(c), the Company shall not be required to effect a
Piggyback Registration pursuant to this Section 3 in response to a request made
pursuant to Section 3(a) if the Company shall previously have so effected three
Piggyback Registrations in response to such requests; provided that a Piggyback
Registration shall not be deemed to have been effected for purposes of this
limitation unless, in respect thereof, the following conditions (hereinafter,
the "Conditions") were satisfied: (i) the applicable registration statement
covered the full amount of Registrable Securities requested to be so covered by
each Holder, without any reductions in any such amount pursuant to Section 3(c)
or otherwise, except as a result of withdrawals pursuant to the last sentence of
Section 3(a); and (ii) the applicable registration statement was declared
effective and kept effective until the earlier of (A) nine months following the
date on which it was declared effective and (B) the sale pursuant thereto of all
of the Registrable Securities covered thereby, provided, that such non-month
period shall be tolled during a Black-Out Period (as defined in Section 4(b)).

      (c) Cut-Backs. Notwithstanding the provisions of Section 3(a), if the
managing underwriter or underwriters of a proposed underwritten offering as
described in Section 3(a) deliver a written opinion to the Holders requesting
inclusion of their Registrable Securities, stating that the total amount or kind
of securities that they or any other Persons (other than the Company) seek to
include in such offering would materially and adversely affect the success of
such offering, then, in addition to the number of such securities being included
in the offering for the account of the Company, the Company shall be required to
include in the offering only that number of additional such securities,
including Registrable Securities (collectively, the "Additional Securities"),
which the underwriters determine in their sole discretion will not jeopardize
the success of the offering, and the Additional Securities so included shall be
apportioned pro rata among the selling stockholders and the Holders of
Registrable Securities


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<PAGE>

according to the total amount of securities requested to be included therein by
each selling stockholder and the Holders or in such other proportions as shall
mutually be agreed to by such selling stockholders and the Holders.

      (d) Control by the Company. The Company may withdraw any registration
statement and abandon any proposed offering initiated by the Company without the
consent of any Holder of Registrable Securities, notwithstanding the request of
any such Holder to participate therein in accordance with this Section 3, if the
Board of Directors of the Company determines in its sole discretion that such
action is in the best interests of the Company.

      4. Holdback Agreements; Blackouts.

      (a) Restrictions on Public Sales by Holders of Registrable Securities. To
the extent not inconsistent with applicable law, each Holder whose Registrable
Securities are included in a Registration that is timely notified in writing by
the managing underwriter or underwriters shall not effect any public sale or
distribution (including a sale pursuant to Rule 144) of any issue being
registered in an underwritten offering (other than pursuant to a dividend
reinvestment, employee stock option, stock purchase, stock bonus or similar
plan, pursuant to a merger, exchange offer or a transaction of the type
specified in Rule 145(a) or pursuant to a "shelf" registration), any securities
of the Company similar to any such issue or any securities of the Company
convertible into or exchangeable or exercisable for any such issue, during the
10-day period prior to, and during the 180-day period beginning on, the
effective date of the applicable registration statement (or, if later, the date
on which a bona fide offering of the securities covered thereby commences),
except as part of such Registration.

      (b) Restrictions on Public Sales by the Company. The Company shall not
effect any public sale or distribution for its own account of any issue being
registered in an underwritten offering (other than pursuant to a dividend
reinvestment, employee stock option, stock purchase, stock bonus or similar
plan, pursuant to a merger, exchange offer or a transaction of the type
specified in Rule 145(a) under the Securities Act or pursuant to a "shelf"
registration), any securities of the Company similar to any such issue or any
securities of the Company convertible into or exchangeable or exercisable for
any such issue, during the 10-day period prior to, and during the 180-day period
beginning on, the effective date of the applicable registration statement (or,
if later, the date on which a bona fide offering of the securities covered
thereby commences), except as part of such Registration.

      (c) Black-Outs. Notwithstanding the provisions of Sections 2 and 3, the
Company may, by giving written notice to the Holders at any time prior to the
effectiveness of the applicable registration statement, delay effecting a Demand
Registration or a Piggyback Registration for a reasonable period of time (the
"Black-Out Period") not to exceed:

            (i) 90 days, if at the time the Company is otherwise engaged in an
issuer tender offer (within the meaning of Section 13(e) of the Exchange Act)
for securities of the same class (within the meaning of the Exchange Act) as the
Registrable Securities that are proposed to be registered and sold; provided
that the Board of Directors of the Company shall have determined in good faith,
based on advice of counsel to the Company, that such issuer tender offer may
not, under Rule 10b-6, be continued and consummated if offers or sales of
Registrable Securities were to be made pursuant to such Demand Registration or
Piggyback Registration; provided, further, that the Company, if requested by the
Majority Registered Holders, shall


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<PAGE>

cooperate with the Holders to obtain from the staff of the Commission a
no-action letter to the effect that the staff would not recommend enforcement
action to the Commission with respect to Rule 10b-6, or would grant an exemption
from Rule 10b-6, in the event such offers and sales were to be so made; and

            (ii) 90 days, if at the time the Company is otherwise engaged in a
financing, acquisition, corporate reorganization or other material transaction
whose disclosure in the good faith judgment of the Board of Directors of the
Company would (a) be detrimental to the interests of the Company and (b) based
on advice of counsel to the Company, be required in connection with such Demand
Registration or Piggyback Registration.

      5. Registration Procedures.

      (a) Company Procedures. Whenever the Company is required by this Agreement
to effect the registration of any Registrable Securities under the Securities
Act pursuant to a registration statement, the Company shall use its best efforts
to effect each such registration to permit the sale of such Registrable
Securities in accordance with the intended method or methods of disposition
thereof, and pursuant thereto the Company shall, as soon as practicable:

            (i) prepare and file with the Commission the requisite registration
statement to effect such registration and thereafter use its best efforts to
cause such registration statement to be declared effective as soon as
practicable and to remain continuously effective for the time period required by
this Agreement to the extent permitted under the Securities Act, provided that
as soon as practicable but in no event later than three Business Days before
filing such registration statement, any related prospectus or any amendment or
supplement thereto, other than any amendment or supplement made solely as a
result of incorporation by reference of documents filed with the Commission
subsequent to the filing of such registration statement, the Company shall
furnish to the Holders of the Registrable Securities covered by such
registration statement and the underwriters, if any, copies of all such
documents proposed to be filed, which documents shall be subject to the review
of such Holders and underwriters; the Company shall not file any registration
statement or amendment thereto or any prospectus or any supplement thereto
(other than any amendment or supplement made solely as a result of incorporation
by reference of documents filed with the Commission subsequent to the filing of
such registration statement) to which the managing underwriters of the
applicable offering, if any, or the Majority Registered Holders shall have
reasonably objected in writing, within two Business Days after receipt of such
documents, to the effect that such registration statement or amendment thereto
or prospectus or supplement thereto does not comply in all material respects
with the requirements of the Securities Act and specifying in reasonable detail
the reasons therefor (provided that the foregoing shall not limit the right of
any Holder whose Registrable Securities are covered by a registration statement
to reasonably object, within two Business Days after receipt of such documents,
to any particular information that is to be contained in such registration
statement, amendment, prospectus or supplement and relates specifically to such
Holder, including without limitation any information describing the manner in
which such Holder acquired such Registrable Securities and the intended method
of distribution of such Registrable Securities), and if the Company is unable to
file any such document due to the objections of such underwriters or such
Holders, the Company shall use its best efforts to cooperate with such
underwriters and Holders to prepare, as soon as practicable, a document that is
responsive in all material respects to the reasonable objections of such
underwriters and Holders;


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            (ii) prepare and file with the Commission such amendments and
post-effective amendments to such registration statement as may be necessary to
keep such registration statement continuously effective and current for the
period required by this Agreement to the extent permitted under the Securities
Act; cause each related prospectus to be supplemented by any prospectus
supplement as may be required, and as so supplemented to be filed pursuant to
Rule 424, if required; and otherwise use its best efforts to comply with the
provisions of the Securities Act as may be necessary to facilitate the
disposition of all Registrable Securities covered by such registration statement
during the applicable period and in accordance with the intended method of
disposition by the selling Holders thereof set forth in such registration
statement or such prospectus or prospectus supplement;

            (iii) notify the Holders and the managing underwriters, if any, of
the applicable offering (providing, if requested by any such Persons,
confirmation in writing) as soon as practicable after becoming aware of: (A) the
filing of any prospectus or prospectus supplement or the filing or effectiveness
(or anticipated date of effectiveness) of such registration statement or any
post-effective amendment thereto; (B) any request by the Commission for
amendments or supplements to such registration statement or the related
prospectus or for additional information; (C) the issuance by the Commission of
any stop order suspending the effectiveness of such registration statement or
the initiation of any proceedings for that purpose; (D) the receipt by the
Company of any notification with respect to the suspension of the qualification
or registration (or exemption therefrom) of any Registrable Securities for sale
in any jurisdiction in the United States or the initiation or threatening of any
proceeding for such purposes; or (B) the happening of any event that makes any
statement made in such registration statement or in any related prospectus,
prospectus supplement, amendment or document incorporated therein by reference
untrue in any material respect or that requires the making of any changes in
such registration statement or in any such prospectus, supplement, amendment or
other such document so that it will not contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein (in the case of any prospectus or
supplement in the light of the circumstances under which they were made) not
misleading;

            (iv) use its best efforts to obtain at the earliest possible moment
the withdrawal of any order or other action suspending the effectiveness of any
such registration statement or suspending the qualification or registration (or
exemption therefrom) of the Registrable Securities for sale in any jurisdiction;

            (v) if reasonably requested by the managing underwriters, if any, of
the applicable offering, or by the Majority Registered Holders, as soon as
practicable incorporate in a prospectus supplement or post-effective amendment
such information as such underwriters or the Majority Registered Holders, as the
case may be, agree should be included therein relating to the sale and offering
of the applicable Registrable Securities, including without limitation
information with respect to the number of Registrable Securities being sold to
any underwriters, the purchase price being paid therefor by any such
underwriters and any other terms of the offering of the Registrable Securities;
and make all required filings of such prospectus supplement or post-effective
amendment as soon as practicable following receipt of notice of the matters to
be incorporated therein;

            (vi) as soon as practicable after filing such documents with the
Commission, furnish to the Holders and each of the underwriters, if any, without
charge, at least one manually


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signed or conformed copy of such registration statement and any post-effective
amendment thereto, including financial statements and schedules; and as soon as
practicable after the request of any Holder or underwriter, furnish to such
Holder or underwriter, as the case may be, at least one copy of any document
incorporated by reference in such registration statement or in any related
prospectus, prospectus supplement or amendment, together with all exhibits
thereto (including those previously furnished or incorporated by reference);

            (vii) deliver to the Holders and to each of the underwriters, if
any, without charge, as many copies of the prospectus or prospectuses (including
each preliminary prospectus) and any amendment or supplement thereto as such
Persons may reasonably request; subject to Section 5(b)(i), the Company consents
to the use of any such prospectus or any amendment or supplement thereto by the
Holders and the underwriters, if any, in connection with the offering and sale
of the Registrable Securities covered by any such prospectus or any amendment or
supplement thereto;

            (viii) prior to any public offering of Registrable Securities,
register or qualify, or obtain an exemption therefrom (with the cooperation of
the Holders, the underwriters, if any, and their respective counsel in
connection therewith to the extent necessary) of, such Registrable Securities
for offer and sale under the securities or blue sky laws of such jurisdictions
in the United States as the Holders or the underwriters, if any, shall
reasonably request in writing; use its best efforts to keep each such
registration or qualification (or exemption therefrom) effective during the
period during which such registration statement is required to be kept effective
pursuant to this Agreement, to the extent permitted under the Securities Act;
and do any and all other acts and things reasonably necessary or advisable to
facilitate the disposition in such jurisdictions of the Registrable Securities
covered by such registration statement; provided that the Company shall not be
required to qualify to do business in any jurisdiction where it would not be
required so to qualify but for this Section 5(a)(viii);

            (ix) cooperate with Holders participating in such registration and
the underwriters, if any, to facilitate the timely preparation and delivery of
certificates representing the Registrable Securities to be sold; and enable such
Registrable Securities to be in such denominations and registered in such names
as the underwriters, if any, may request at least two Business Days prior to any
sale of Registrable Securities to the underwriters;

            (x) use its best efforts to cause the Registrable Securities covered
by such registration statement to be registered with or approved by such other
governmental agencies or authorities in the United States as may be reasonably
necessary to enable the Holders or the underwriters, if any, to consummate the
disposition of such Registrable Securities;

            (xi) as soon as practicable after the occurrence of any event
described in Section 5(a)(iii)(E), prepare a supplement or post-effective
amendment to such registration statement or to the related prospectus or any
document incorporated therein by reference, or file any other required document
so that, as thereafter delivered to the purchasers of the Registrable Securities
being sold thereunder, such prospectus shall not contain an untrue statement of
a material fact or omit to state any material fact necessary to make the
statements therein not misleading; if any event described in Section
5(a)(iii)(B) occurs, use its best efforts to cooperate with the Commission to
prepare, as soon as practicable, any amendment or supplement to such
registration statement or such related prospectus and any other additional
information, or to take other action that may have been requested by the
Commission;


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            (xii) use its best efforts to cause all Common Stock constituting
Registrable Securities covered by such registration statement to be listed on
each securities exchange (or quotation system operated by a national securities
association), if any, on which the Common Stock of the Company is then listed
(or included), if so requested by the Majority Registered Holders or the
underwriters, if any, and enter into customary agreements including, if
necessary, a listing application and indemnification agreement in customary
form, and provide a transfer agent for such Registrable Securities no later than
the effective date of such registration statement; use its best efforts to cause
any other Registrable Securities covered by such registration statement to be
listed (or included) on each securities exchange (or quotation system operated
by a national securities association) on which securities of the same class and
series, if any, are then listed (or included) (or on any exchange or quotation
system on which any Person other than a Holder shall have the right to have
securities of the same class and series, if any, listed or included), if so
requested by the Majority Registered Holders or the underwriters, if any, and
enter into customary agreements including, if necessary, a listing application
and indemnification agreement in customary form, and, if necessary, provide a
transfer agent for such securities no later than the effective date of such
registration statement;

            (xiii) provide a CUSIP number for the Registrable Securities no
later than the effective date of such registration statement;

            (xiv) enter into customary agreements (including, in the case of an
underwritten offering, an underwriting agreement in customary form for the
managing underwriters with respect to issuers of similar market capitalization
and reporting and financial histories) and take all such other appropriate
actions in connection therewith in order to expedite or facilitate the
disposition of the Registrable Securities included in such registration
statement and, in the case of an underwritten offering: (A) make representations
and warranties to each Holder of Registrable Securities participating in such
offering and to each of the underwriters, in such form, substance and scope as
are customarily made to the managing underwriters by issuers of similar market
capitalization and reporting and financial histories and confirm the same to the
extent customary if and when requested; (B) obtain opinions of counsel to the
Company addressed to each Holder of Registrable Securities participating in such
offering and to each of the underwriters, such opinions to be in customary form
and covering the matters customarily covered in opinions obtained in
underwritten offerings by the managing underwriters for issuers of similar
market capitalization and reporting and financial histories; (C) use its best
efforts to obtain "comfort" letters from the Company's independent certified
public accountants addressed to each Holder of Registrable Securities
participating in such offering and to each of the underwriters, such letters to
be in customary form and covering matters of the type customarily covered in
"comfort" letters to the managing underwriters in connection with underwritten
offerings by them for issuers of similar market capitalization and reporting and
financial histories; (D) provide, in the underwriting agreement or agency
agreement to be entered into in connection with such offering, indemnification
and contribution provisions and procedures no less favorable than those set
forth in Section 7 with respect to all parties to be indemnified pursuant to
Section 7; and (E) deliver such customary documents and certificates as may be
reasonably requested by the Majority Registered Holders and the managing
underwriters to evidence compliance with clause (A) of this paragraph (xiv) and
with any customary conditions contained in the underwriting agreement entered
into by the Company in connection with such offering;


                                Page 137 of 149
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            (xv) in the case of any nonunderwritten offering: (A) obtain an
opinion of counsel to the Company at the time of effectiveness of such
registration statement covering such offering and an update thereof at the time
of effectiveness of any post-effective amendment to such registration statement
(other than by reason of incorporation by reference of documents filed with the
Commission) addressed to each Holder of any Registrable Securities covered by
such registration statement, covering matters that are no more extensive in
scope than would be customarily covered in opinions obtained in underwritten
offerings by issuers with similar market capitalization and reporting and
financial histories; (B) use its best efforts to obtain a "comfort" letter from
the Company's independent certified public accountants at the time of
effectiveness of such registration statement and, upon the request of the
Majority Registered Holders, updates thereof, in each case addressed to each
Holder of Registrable Securities participating in such offering and covering
matters that are no more extensive in scope than would be customarily covered in
"comfort" letters and updates obtained in underwritten offerings by issuers with
similar market capitalization and reporting and financial histories; and (C)
deliver a certificate of a senior executive officer of the Company at the time
of effectiveness of such registration statement and, upon the request of the
Majority Registered Holders, updates thereof, such certificates to cover matters
no more extensive in scope than those matters customarily covered in officers'
certificates delivered in connection with underwritten offerings by issuers with
similar market capitalization and reporting and financial histories;

            (xvi) make available, for inspection by the Holders of the
Registrable Securities included in such registration, any underwriter
participating in any disposition of Registrable Securities pursuant to such
registration statement, and any attorney, accountant or other representative
retained by such selling Holders or by any such underwriter, all pertinent
financial and other records, pertinent corporate documents and properties of the
Company, and cause the Company's officers, directors and employees to supply all
information reasonably requested by any such underwriter, attorney, accountant
or other representative in connection with such registration, provided that no
record, document or property that is subject to a claim of privilege need be
made available for inspection by any Person pursuant to this clause (xvi) if
inspection thereof by such Person could, in the opinion of the Company's
counsel, result in the waiver of such privilege;

            (xvii) otherwise use its best efforts to comply with all applicable
rules and regulations of the Commission relating to such registration and the
distribution of the securities being offered (including, without limitation,
Rule l0b-6, with respect to which the Company shall also use its best efforts
timely to apprise each Holder of any bids and purchases by the Company, and of
any known bids and purchases by each "affiliated purchaser" (as defined in Rule
l0b-6) of the Company, that would in the opinion of the Company be prohibited
under Rule l0b-6 in connection with a "distribution" (as so defined) by such
Holder of securities of the Company) and make generally available to its
security holders earning statements satisfying the provisions of Section 11(a)
of the Securities Act (including Rule 158 thereunder), not later than 60 days
after the end of any 12-month period (or 120 days, if such period is a fiscal
year) commencing at the end of any fiscal quarter in which the Registrable
Securities are sold to underwriters in a firm commitment or best efforts
underwritten offering, or, if not sold to underwriters in such an offering,
beginning with the first month of the Company's first fiscal quarter commencing
after the effective date of such registration statement, which earning
statements shall cover such 12-month periods;


                                Page 138 of 149
<PAGE>

            (xviii) cooperate and assist in any filings required to be made with
the National Association of Securities Dealers, Inc. and in the performance of
any customary or required due diligence investigation by any underwriter,
provided that no record, document or property that is subject to a claim of
privilege need be made available for investigation by any underwriter pursuant
to this clause (xviii) if investigation thereof by such underwriter could, in
the opinion of the Company's counsel, result in the waiver of such privilege;
and

            (xix) use its best efforts to effect such registration in the manner
contemplated by this Agreement.

      (b) Holder Procedures.

            (i) Each Holder agrees, by acquisition of the Registrable Securities
that, upon receipt of any notice from the Company of the happening of any event
described in Section 5(a)(iii) (B), 5(a) (iii) (C), 5(a)(iii)(D) or
5(a)(iii)(E), such Holder shall forthwith discontinue disposition of any
Registrable Securities (but, in the case of an event described in Section
5(a)(iii)(D), in the affected jurisdiction or jurisdictions only) covered by the
affected registration statement or prospectus until such Holder's receipt of the
copies of the supplemented or amended prospectus contemplated by Section
5(a)(iii) or 5(a)(xi) or until such Holder is (it being agreed by the Company
that the underwriters, if any, shall also be) advised in writing (the "Advice")
by the Company that the use of the applicable prospectus may be resumed. If the
Company shall have given any such notice during a period when a Demand
Registration or Piggyback Registration is in effect, the one-year period
mentioned in Section 2(b) or Section 3(b), as the case may be, shall be extended
by the number of days from and including the date of the giving of such notice
to and including the date when each Holder of Registrable Securities included in
such Registration shall have received the copies of the supplemented or amended
prospectus contemplated by Section 5(a)(iii) or 5(a)(xi) or the Advice, as the
case may be.

            (ii) In connection with any underwritten public offering of
Registrable Securities, the managing underwriter of such offering shall be, (A)
in the case of a Demand Registration, a nationally recognized investment banking
firm selected by the Majority Registered Holders and reasonably acceptable to
the Company and (B) in the case of a Piggyback Registration, a nationally
recognized investment banking firm selected by the Company and reasonably
acceptable to the Majority Registered Holders.

      6. Registration Expenses.

      All expenses incident to the Company's performance of or compliance with
the provisions of this Agreement, including without limitation all registration
and filing fees, fees and expenses of compliance with securities or blue sky
laws (including fees and disbursements of counsel in connection with blue sky
qualifications or registrations (or the obtaining of exemptions therefrom) of
the Registrable Securities), printing expenses (including expenses of printing
prospectuses), messenger and delivery expenses, internal expenses (including,
without limitation, all salaries and expenses of its officers and employees
performing legal or accounting duties), fees and disbursements of its counsel
and its independent certified public accounts (including the expenses of any
special audit or "comfort" letters required by or incident to such performance
or compliance), securities acts liability insurance (if the Company elects to
obtain such insurance), fees and expenses of any special experts retained by the
Company in connection with such Registration, fees and expenses of other Persons
retained by the Company shall be


                                Page 139 of 149
<PAGE>

borne by the Company. Each Holder shall bear the fees and expenses of its
counsel, the out-of-pocket expenses of the Holders incurred in connection
herewith and any underwriting discounts, commissions or fees attributable to the
sale of Registrable Securities included in any Registration.

      7. Indemnification: Contribution.

      (a) Indemnification by the Company. The Company shall indemnify, to the
full extent permitted by law, each Holder of Registrable Securities, its
officers, directors, employees and agents, each Person who controls such Holder
(within the meaning of the Securities Act) and any investment adviser thereof or
agent therefor, against all losses, claims, damages, liabilities and expenses
(including costs of investigation and legal expenses) arising out of or based
upon any untrue or alleged untrue statement of a material fact contained in any
registration statement covering any Registrable Securities, any related
prospectus or preliminary prospectus, or any amendment or supplement thereto, or
any omission or alleged omission to state in any thereof a material fact
required to be stated therein or necessary to make the statements therein (in
the case of a prospectus or prospectus supplement, in light of the circumstances
under which they were made) not misleading, except in each case insofar, but
only insofar, as the same arises out of or is based upon an untrue statement or
alleged untrue statement of a material fact or an omission or alleged omission
to state a material fact in such registration statement, prospectus, preliminary
prospectus, amendment or supplement, as the case may be, made or omitted, as the
case may be, in reliance upon and in conformity with written information
furnished to the Company by such Holder expressly for use therein. This
indemnity is in addition to any liability that the Company may otherwise have.
The Company shall also indemnify any underwriters of the Registrable Securities,
selling brokers, dealer managers and similar securities industries professionals
participating in the distribution and their officers and directors and each
Person who controls such underwriters or other Persons (within the meaning of
the Securities Act) to the same extent as provided above with respect to the
indemnification of Holders and other specified Persons.

      (b) Indemnification by Holders of Registrable Securities. In connection
with any registration statement covering Registrable Securities, each Holder any
of whose Registrable Securities are covered thereby shall furnish to the Company
in writing such information and affidavits with respect to such Holder as the
Company reasonably requests for use in connection with such registration
statement, any related prospectus or preliminary prospectus, or any amendment or
supplement thereto, and shall indemnify, to the full extent permitted by law,
the Company, the Company's directors, officers, employees and agents, each
Person who controls the Company (within the meaning of the Securities Act) and
any investment adviser thereof or agent therefor, against all losses, claims,
damages, liabilities and expenses (including costs of investigation and legal
expenses) arising out of or based upon any untrue or alleged untrue statement of
a material fact contained in any registration statement covering any Registrable
Securities, any related prospectus or preliminary prospectus, or any amendment
or supplement thereto, or any omission or alleged omission to state in any
thereof a material fact required to be stated therein or necessary to make the
statements therein (in the case of a prospectus or prospectus supplement, in
light of the circumstances under which they were made) not misleading, in each
case to the extent, but only to the extent, that the same arises out of or is
based upon an untrue statement or alleged untrue statement of a material fact or
an omission or alleged omission to state a material fact in such registration
statement or in such related prospectus, preliminary prospectus, amendment or
supplement, as the case may be, made or omitted, as the case may be, in reliance
upon and in conformity with written information


                                Page 140 of 149
<PAGE>

furnished to the Company by such Holder expressly for use therein.
Notwithstanding any other provision hereof, in no event shall the
indemnification obligation of any Holder be greater in amount than the dollar
amount of the proceeds received by such Holder upon the sale of the Registrable
Securities giving rise to such obligation.

      (c) Conduct of Indemnification Proceedings. Any Person entitled to
indemnification under this Section 7 agrees to give prompt written notice to the
indemnifying party after the receipt by such Person of any written notice of the
commencement of any action, suit, proceeding or investigation or threat thereof
made in writing for which such Person will claim indemnification or contribution
pursuant to this Agreement and, unless in the judgment of such indemnified party
a conflict of interest may exist between such indemnified party and the
indemnifying party with respect to such claim, permit the indemnifying party to
assume the defense of such claim with counsel reasonably satisfactory to such
indemnified party (which may be regular counsel to the Company). If the
indemnifying party is not entitled to, or elects not to, assume the defense of a
claim, it shall not be obligated to pay the fees and expenses of more than one
counsel with respect to such claim, unless in the judgment of counsel to such
indemnified party, expressed in a writing delivered to the indemnifying party, a
conflict of interest may exist between such indemnified party and any other
indemnified party with respect to such claim, in which event the indemnifying
party shall be obligated to pay the fees and expenses of such additional counsel
or counsels (which shall be limited to one counsel per indemnified party). The
indemnifying party shall not be subject to any liability for any settlement made
without its consent, which consent shall not be unreasonably withheld or
delayed.

      (d) Contribution.

            (i) If the indemnification provided for in this Section 7 from the
indemnifying party is unavailable to an indemnified party hereunder in respect
of any losses, claims, damages, liabilities or expenses referred to therein,
then the indemnifying party, in lieu of indemnifying such indemnified party,
shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages, liabilities or expenses in such
proportion as is appropriate to reflect the relative fault of the indemnifying
party and indemnified parties in connection with the actions that resulted in
such losses, claims, damages, liabilities or expenses, as well as any other
relevant equitable considerations. The relative fault of such indemnifying party
and indemnified parties shall be determined by reference to, among other things,
whether any action in question, including any untrue or alleged untrue statement
of a material fact or omission or alleged omission to state a material fact, has
been made by, or relates to information supplied by, such indemnifying party or
indemnified parties, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such action. The amount paid
or payable by a party as a result of the losses, claims, damages, liabilities
and expenses referred to above shall be deemed to include, subject to the
limitations set forth in Section 7(c), any legal or other fees or expenses
reasonably incurred by such party in connection with any investigation or
proceeding.

            (ii) The parties hereto agree that it would not be just and
equitable if contribution pursuant to this Section 7(d) were determined by pro
rata allocation or by any other method of allocation that does not take account
of the equitable considerations referred to in the immediately preceding
paragraph. Notwithstanding any other provision hereof, in no event shall the
contribution obligation of any Holder be greater in amount than the excess of
(A) the dollar amount of the proceeds received by such Holder upon the sale of
the Registrable Securities


                                Page 141 of 149
<PAGE>

giving rise to such contribution obligation over (B) the dollar amount of any
damages that such Holder has otherwise been required to pay by reason of the
untrue or alleged untrue statement or omission or alleged omission giving rise
to such obligation. No Person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

            (iii) If any provision of an indemnification or contribution clause
in an underwriting agreement or agency agreement executed by or on behalf of a
Holder of Registrable Securities in accordance with Section 5(a)(xiv)(D) differs
from a provision in this Section 7, such provision in the underwriting agreement
shall determine such Holder's rights in respect thereof.

      8. Participation in Underwritten Registrations

      No Person may participate in any underwritten Registration unless such
Person (a) agrees to sell such Person's securities on the basis provided in any
underwriting arrangements approved by the Persons entitled hereunder to approve
such arrangements, (b) completes and executes all questionnaires, powers of
attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements and (c) agrees to pay
such Person's pro rata portion of all underwriting discounts and commissions.

      9. Cooperation with the Company.

      Each Holder by the acceptance of Registrable Securities agrees to use its
best efforts to cooperate with the Company in all reasonable respects in
connection with the preparation and filing of Registrations hereunder in which
such Registrable Securities are included or requested to be included.

      10. Miscellaneous.

      (a) Modifications in Connection with a Qualifying Offering. In connection
with the consummation of a Qualifying Offering (as such term is defined in the
Purchase Agreement), the registration rights provided hereunder shall be
modified to the extent determined in the reasonable judgment of the Company's
financial advisor to be reasonably necessary to permit consummation of the
Qualifying Offering on the terms most favorable to the Company; provided,
however, that the registration rights granted to the investors in the Qualifying
Offering shall not be more favorable than those granted to the Holders hereunder
(as so modified) without the approval of the Holders of at least a majority of
the Registrable Securities then outstanding. The Holders shall have the right to
participate in discussions with such financial advisor regarding any proposed
change in the terms of this Agreement. The Holders shall execute and deliver
appropriate amendments or supplements to this Agreement necessary to effect any
such modification.

      (b) Remedies. Each Holder of Registrable Securities, in addition to being
entitled to exercise all rights in an action at law, including recovery of
damages, shall be entitled to specific performance of its rights under this
Agreement. The Company agrees that monetary damages would not be adequate
compensation for any loss incurred by reason of a breach by it of the provisions
of this Agreement and hereby agrees to waive the defense in any action for
specific performance that a remedy at law would be adequate.


                                Page 142 of 149
<PAGE>

      (c) Amendments and Waivers. Except as otherwise provided herein, the
provisions of this Agreement may not be amended, modified or supplemented, and
waivers or consents to departures from the provisions hereof may not be given,
unless the Company shall have obtained the prior written consent of the Holders
of at least a majority of the securities then constituting Registrable
Securities.

      (d) Notices. All notices, requests, waivers, releases, consents, and other
communications required or permitted by this Agreement (collectively, "Notices")
shall be in writing. Notices shall be deemed sufficiently given for all purposes
under this Agreement when delivered in person, when dispatched by telegram or
(upon written confirmation of receipt) by electronic facsimile transmission or
(upon written confirmation of receipt) when dispatched by a nationally
recognized overnight courier service. All Notices shall be delivered as follows:

            (i) if to a Holder of Registrable Securities, at the address
      indicated on Company's registrar relating to such securities or at such
      other address as such Holder may have furnished to the Company in writing;
      and

            (ii) if to the Company, at:

                 LogiMetrics, Inc.
                 50 Orville Drive
                 Bohemia, New York 11716
                 Attention: President

      (e) Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors and assigns of each of the parties hereto,
including any successors to the Company by merger.

      (f) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

      (g) Headings: Construction. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof. Unless the context otherwise requires, all references to
Sections are to Sections of this Agreement, "or" is inclusively disjunctive, and
words in the singular include the plural and vice versa. In computing any period
of time specified in this Agreement or in any Notices, the date of the act or
event from which such period of time is to be measured shall be included, any
such period shall expire at 5:00 p.m., New York City time, on the last day of
such period, and any such period denominated in months shall expire on the date
in the last month of such period that has the same numerical designation as the
date of the act or event from which such period is to be measured; provided,
however, that if there is no date in the last month of such period that has the
same numerical designation as the date of such act or event, such period shall
expire on the last day of the last month of such period.


                                Page 143 of 149
<PAGE>

      (h) Governing Law. This Agreement shall be governed by and construed in
accordance with the internal laws of the State of New York, without regard to
the principles of conflicts of laws thereof.

      (i) Severability. If one or more of the provisions hereof, or the
application thereof in any circumstance, is held invalid, illegal or
unenforceable in any respect, for any reason, the validity, legality and
enforceability of the remaining provisions hereof shall not be in any way
affected or impaired thereby, and the provision held to be invalid, illegal or
unenforceable shall be reformed to the minimum extent necessary, and in a manner
as consistent with the purposes thereof as is practicable, so as to render it
valid, legal and enforceable, it being intended that all of the rights and
privileges of the Holders hereunder shall be enforceable to the fullest extent
permitted by law.

      (j) Entire Agreement. This Agreement is intended by the Company and the
Purchasers to be a final expression thereof and is intended to be a complete and
exclusive statement of the agreement and understanding of the Company and the
Purchasers in respect of the subject matter contained herein. There are no
restrictions, promises, warranties or undertakings, other than those set forth
or referred to herein. This Agreement supersedes all prior agreements and
understandings among the Company and any Holders with respect to such subject
matter.

                  [Remainder of page intentionally left blank]


                                Page 144 of 149
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.

                                    LOGIMETRICS, INC.


                                    By: /s/
                                        ----------------------------------------
                                        Name:
                                        Title:

                                    L.A.D. EQUITY PARTNERS, L.P.


                                    By: Flint Investments, Inc.
                                        Its General Partner


                                    By: /s/
                                        ----------------------------------------
                                        Name: Arthur J. Pergament
                                        Title: Vice President

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                    By: /s/
                                        ----------------------------------------
                                        Gerald B. Cramer

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                Page 145 of 149
<PAGE>

                                    By: /s/
                                        ----------------------------------------
                                        Edward J. Rosenthal, Keogh

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291

                                    CRM 1998 ENTERPRISE FUND, LLC


                                    By: Cramer Rosenthal McGlynn, Inc.,
                                        Its Managing Member


                                    By: /s/
                                        ----------------------------------------
                                        Name: Eugene A. Trainor, III
                                        Title: Chief Financial Officer

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291

                                    A.C. ISRAEL ENTERPRISES, INC.


                                    By: /s/
                                        ----------------------------------------
                                        Name: Jay Howard
                                        Title:

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                Page 146 of 149
<PAGE>

                                    CRM-EFO PARTNERS, L.P.

                                    By: CRM-EFO Investments, LLC,
                                        Its General Partner

                                    By: CRM Management, Inc.,
                                        Its Managing Member


                                    By: /s/
                                        ----------------------------------------
                                        Name: Eugene A. Trainor, III
                                        Title:

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                    By: /s/
                                        ----------------------------------------
                                    Richard S. Fuld, Jr.

                                    By: Cramer Rosenthal McGlynn, Inc.,
                                        Attorney-in-Fact


                                    By: /s/
                                        ----------------------------------------
                                        Name: Eugene A. Trainor, III
                                        Title: Chief Financial Officer

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                Page 147 of 149
<PAGE>

                                    PAMELA EQUITIES CORP.


                                    By: /s/
                                        ----------------------------------------
                                        Name:
                                        Title:

                                        3 New York Plaza
                                        18th Floor
                                        New York, New York 10004
                                        Tel: (212) 837-4829
                                        Fax: (212) 837-4938

                                    WHITEHALL PROPERTIES, LLC


                                    By: /s/
                                        ----------------------------------------
                                        Name:
                                        Title: Manager

                                        3 New York Plaza
                                        18th Floor
                                        New York, New York 10004
                                        Tel: (212) 837-4829
                                        Fax: (212) 837-4938

                                    KABUKI PARTNERS ADP, GP


                                    By: /s/
                                        ----------------------------------------
                                        Name:
                                        Title: General Partner

                                        3 New York Plaza
                                        18th Floor
                                        New York, New York 10004
                                        Tel: (212) 837-4829
                                        Fax: (212) 837-4938


                                Page 148 of 149
<PAGE>

                                    McGLYNN FAMILY PARTNERSHIP


                                    By: /s/
                                        ----------------------------------------
                                        Name: Ronald H. McGlynn
                                        Title: General Partner

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                    By: /s/
                                        ----------------------------------------
                                        Fred M. Filoon

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                    By: /s/
                                        ----------------------------------------
                                        Eugene A. Trainor, III

                                        520 Madison Avenue
                                        New York, New York 10022
                                        Tel: (212) 838-3830
                                        Fax: (212) 644-8291


                                    By: /s/
                                        ----------------------------------------
                                        Charles S. Brand

                                        20 Meridian Way
                                        Eatontown, New Jersey 07724
                                        Tel: (732) 935-7150
                                        Fax: (732) 935-7151


                                Page 149 of 149



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