GEOTEK COMMUNICATIONS INC
SC 13D/A, 1998-08-05
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. 16)*

                           GEOTEK COMMUNICATIONS, INC.
                    ----------------------------------------
                                (Name of Issuer)

                          Common Stock, $.01 Par Value
                    ----------------------------------------
                         (Title of Class of Securities)

                                    373654102
                               ------------------
                                 (CUSIP Number)

                              Stephen M. Vine, Esq.
                    Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                               590 Madison Avenue
                            New York, New York 10022
                                 (212) 872-1000
                    ----------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  July 23, 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(e),  13d-1(f) or 13d-1(g),  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 disclosure
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 ("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).




                         Continued on following page(s)
                               Page 1 of 108 Pages
                             Exhibit Index: Page 15



<PAGE>


                                                             Page 2 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  S-C RIG INVESTMENTS-III, L.P.

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 18,633,701
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   18,633,701
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            18,633,701/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            16.17%/1/

14       Type of Reporting Person*

         PN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 3 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  S-C RIG CO.

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 18,633,701
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   18,633,701
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            18,633,701/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            16.17%/1/

14       Type of Reporting Person*

         CO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 4 of 108 Pages


                                  SCHEDULE 13D

CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  WINSTON 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*

                  Not applicable

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                                 2,438,904
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   2,438,904
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            2,438,904/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                    2.34%/1/

14       Type of Reporting Person*

                  PN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 5 of 108 Pages


                                  SCHEDULE 13D

CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  CHATTERJEE FUND MANAGEMENT, L.P.

2        Check the Appropriate Box If a Member of a Group*
                                                       a.  [_]
                                                       b.  [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 2,438,904
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   2,438,904
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            2,438,904/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                    2.34%/1/

14       Type of Reporting Person*

                  PN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 6 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  WINSTON PARTNERS II LDC

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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

6        Citizenship or Place of Organization

                  Cayman Islands

                           7        Sole Voting Power
  Number of                                 1,768,285
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   1,768,285
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            1,768,285/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            1.69%/1/

14       Type of Reporting Person*

         OO; IV

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 7 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  WINSTON PARTNERS II LLC

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 884,107
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   884,107
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            884,107/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            0.85%/1/

14       Type of Reporting Person*

         OO; IV

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 8 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  CHATTERJEE ADVISORS LLC

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 2,652,392
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   2,652,392
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            2,652,392/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            2.54%/1/

14       Type of Reporting Person*

         OO; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                             Page 9 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  CHATTERJEE MANAGEMENT COMPANY

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 2,652,392
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   2,652,392
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            2,652,392/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [x]

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

                                            2.54%/1/

14       Type of Reporting Person*

         CO; IA

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                            Page 10 of 108 Pages


                                  SCHEDULE 13D
CUSIP No. 373654102

1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

                  PURNENDU CHATTERJEE

2        Check the Appropriate Box If a Member of a Group*
                                                       a. [_]
                                                       b. [x]

3        SEC Use Only

4        Source of Funds*

                  Not applicable

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                                 23,964,997
   Shares
Beneficially               8        Shared Voting Power
  Owned By                                  0
    Each
  Reporting                9        Sole Dispositive Power
   Person                                   23,964,997
    With
                           10       Shared Dispositive Power
                                            0

11       Aggregate Amount Beneficially Owned by Each Reporting Person

                                            23,964,997/1/

12       Check Box If the Aggregate  Amount in Row (11) Excludes Certain Shares*
         [_]

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

                                             20.66%/1/

14       Type of Reporting Person*

         IA; IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------

1.   See Item 5 of Amendment  No. 14 to the Initial  Statement on Schedule  13D.
     This number does not include certain  securities of the Issuer of which the
     Reporting Person has the right to acquire under certain circumstances.


<PAGE>


                                                            Page 11 of 108 Pages


          This  Amendment No. 16 to Schedule 13D relates to the shares of common
stock,  $0.01 par value (the  "Shares"),  of Geotek  Communications,  Inc.  (the
"Issuer").  This Amendment No. 16 supplementally amends the initial statement on
Schedule  13D dated  November  9,  1993 and all  subsequent  amendments  thereto
(collectively, the "Initial Statement"). This Amendment No. 16 is being filed by
the  Reporting  Persons to report that  certain of the  Reporting  Persons  have
entered into an arrangement  with the Issuer  providing for up to $10 million in
debtor-in-possession  financing.  Capitalized  terms used herein but not defined
herein shall have the meanings  ascribed to them in the Initial  Statement.  The
Initial Statement is supplementally amended as follows.

Item 4.   Purpose of the Transaction.

          S-C Rig III, by its General  Partner,  entered into a Credit Agreement
dated as of June 29, 1998 (as amended by the First Amendment to Credit Agreement
dated as of July 15, 1998, copies of which are attached hereto as Exhibits W and
X, respectively, and incorporated herein by reference in response to this Item 4
(the "Credit  Agreement")),  with the Issuer and Geotek USA,  Inc.,  debtors and
debtors-in-possession (the "Borrowers"),  whereby S-C Rig III agreed to lend $10
million to the Borrowers as  debtor-in-possession  financing.  On June 29, 1998,
the United States Bankruptcy Court for the District of Delaware (the "Bankruptcy
Court")  issued an order  approving  the  borrowing  of up to $7  million  on an
interim basis,  pending a hearing on final approval of the  debtor-in-possession
financing.  The description of the terms of the Credit Agreement is qualified in
its entirety by reference to the specific provisions of the Credit Agreement.

          On July 23, 1998, the Bankruptcy  Court issued an order granting final
approval of the  borrowing of up to $10 million under the Credit  Agreement.  In
addition,  S-C Rig III, the Borrowers and certain of the Borrowers  subsidiaries
(the  "Subsidiaries")  entered into a Security and Pledge  Agreement dated as of
June 29, 1998, a copy of which is attached hereto as Exhibit Y and  incorporated
herein by reference in response to this Item 4,  whereby the  Borrowers  and the
Subsidiaries  pledged to S-C Rig III,  among other  things,  as security for the
loan,  (i) rights in and to certain  special  mobile radio licenses and stock in
the  subsidiary(ies)  holding the licenses,  and (ii) all unencumbered assets of
the Borrowers and the  Subsidiaries,  including,  all accounts,  chattel  paper,
contracts,  documents,  equipment,  instruments,  inventory and all proceeds and
products thereof,  with the exception of certain  specifically  excluded assets.
The  description of the terms of the Security and Pledge  Agreement is qualified
in its  entirety by reference  to the  specific  provisions  of the Security and
Pledge Agreement.

          Attached  to the  Credit  Agreement  is a Term  Sheet for a Chapter 11
reorganization plan for the Borrowers and their subsidiaries, which contemplates
that S-C Rig III would,  subject to certain terms and  conditions,  underwrite a
rights offering for the  reorganized  debtors whereby S-C Rig III would have the
right to (i) purchase up to $10 million of new common  stock in the  reorganized
Issuer on the same terms and conditions as other participants, (ii) purchase its
pro rata share of $10 million of new common stock in the  reorganized  Issuer on
the same terms and conditions as other  participants,  (iii) nominate a majority
of the board of  directors  of the Issuer and (iv) receive its pro rata share of
warrants to purchase  additional new common stock in the reorganized Issuer. The
term sheet is subject to definitive  documentation and bankruptcy court approval
of a  Chapter  11 plan and  there  can be no  assurance  that  the  transactions
contemplated thereby will occur.





<PAGE>


                                                            Page 12 of 108 Pages



Item 7.   Material to be Filed as Exhibits.

          W.   Credit  Agreement dated June 29, 1998 between the Issuer,  Geotek
               USA, Inc. and S-C Rig III

          X.   First  Amendment to Credit  Agreement dated July 15, 1998 between
               the Issuer, Geotek USA, Inc. and S-C Rig III

          Y.   Security  and Pledge  Agreement  dated June 29, 1998  between the
               Issuer, Geotek USA, Inc. and Subsidiaries and S-C Rig III





<PAGE>


                                                            Page 13 of 108 Pages



                                   SIGNATURES

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


August 4, 1998                     S-C RIG INVESTMENTS-III, L.P.

                                   By:  S-C RIG CO., its General Partner

                                        By:  /S/ PETER HURWITZ
                                             ----------------------------------
                                             Peter Hurwitz
                                             Vice President

                                   S-C RIG CO.

                                   By:  /S/ PETER HURWITZ
                                        ---------------------------------------
                                        Peter Hurwitz
                                        Vice President

                                        
                                   WINSTON PARTNERS, L.P.

                                   By:  Chatterjee Fund Management, L.P.,
                                        its General Partner

                                        By:  Purnendu Chatterjee,
                                             its General Partner

                                             By:  /S/ PETER HURWITZ
                                                  -----------------------------
                                                  Peter Hurwitz
                                                  Attorney-in-Fact

                                   CHATTERJEE FUND MANAGEMENT, L.P.

                                   By:  Purnendu Chatterjee,
                                        its General Partner

                                        By:  /S/ PETER HURWITZ
                                             ----------------------------------
                                             Peter Hurwitz
                                             Attorney-in-Fact


<PAGE>


                                                            Page 14 of 108 Pages



                                   WINSTON PARTNERS II LDC

                                   By:  /S/ PETER HURWITZ
                                        ---------------------------------------
                                        Peter Hurwitz
                                        Attorney-in-Fact


                                   WINSTON PARTNERS II LLC

                                   By:  Chatterjee Advisors LLC, its Manager

                                        By:  /S/ PETER HURWITZ
                                             ----------------------------------
                                             Peter Hurwitz
                                             Manager


                                   CHATTERJEE ADVISORS LLC

                                   By:  /S/ PETER HURWITZ
                                        ---------------------------------------
                                        Peter Hurwitz
                                        Manager


                                   CHATTERJEE MANAGEMENT COMPANY

                                   By:  /S/ PETER HURWITZ
                                        ---------------------------------------
                                        Peter Hurwitz
                                        Vice President


                                   PURNENDU CHATTERJEE

                                   By:  /S/ PETER HURWITZ
                                        ---------------------------------------
                                        Peter Hurwitz
                                        Attorney-in-Fact




<PAGE>


                                                            Page 15 of 108 Pages



                                  EXHIBIT INDEX



                                                                            Page
                                                                            ----

W.        Credit  Agreement  dated June 29, 1998  between  Geotek
          Communications,  Inc.,  Geotek  USA,  Inc.  and S-C Rig
          Investments-III, L.P...................................            16

X.        First Amendment to Credit Agreement dated July 15, 1998
          between Geotek  Communications,  Inc., Geotek USA, Inc.
          and S-C Rig Investments-III, L.P.......................            74

Y.        Security  and  Pledge  Agreement  dated  June 29,  1998
          between Geotek  Communications,  Inc., Geotek USA, Inc.
          and Subsidiaries and S-C Rig Investments-III, L.P......            77













                                                            Page 16 of 108 Pages


                                                                  CONFORMED COPY














                                CREDIT AGREEMENT





                            dated as of June 29, 1998





                                     between





                           GEOTEK COMMUNICATIONS, INC.
                            and GEOTEK USA, INC., as
                        Debtors and Debtors-in-Possession

                                       and

                          S-C RIG INVESTMENTS III, L.P.






<PAGE>

                                                            Page 17 of 108 Pages




                                TABLE OF CONTENTS

                                               
                                                                            Page
                                                                            ----

ARTICLE 1  DEFINITIONS; ACCOUNTING TERMS......................................1
     1.1 Definitions..........................................................1
     1.2 Accounting Principles................................................9

ARTICLE 2  THE CREDITS........................................................9
     2.1  The Commitments.....................................................9
     2.2  Borrowings..........................................................9
     2.3  Changes of Commitments.............................................10
     2.4  Fees...............................................................10
     2.5  Use of Proceeds....................................................10
     2.6  Notes..............................................................11
     2.7  Optional Prepayments...............................................11
     2.8  Mandatory Prepayments and Reductions of Commitments................11

ARTICLE 3  PAYMENTS OF PRINCIPAL AND INTEREST................................12
     3.1  Amortization.......................................................12
     3.2  Interest...........................................................12

ARTICLE 4  PAYMENTS; COMPUTATIONS; ETC. .....................................13
     4.1  Payments...........................................................13
     4.2  Computations.......................................................13
     4.3  Minimum Amounts....................................................13
     4.4  Certain Notices....................................................13

ARTICLE 5  SECURITY:  ADMINISTRATION PRIORITY ...............................14
     5.1  Grant of Lien and Security Interest................................14
     5.2  Administrative Priority............................................15
     5.3  Grants, Rights and Remedies Cumulative.............................15
     5.4  No Filings Required................................................16
     5.5  Survival...........................................................16

ARTICLE 6  CONDITIONS PRECEDENT .............................................17
     6.1  Conditions Precedent...............................................17
     6.2  Additional Conditions Precedent....................................21
     6.3  Certification......................................................22

ARTICLE 7  REPRESENTATIONS AND WARRANTIES ...................................22
     7.1  Incorporation, Good Standing and Due Qualification.................22
     7.2  Corporate Power and Authority; No Conflicts........................22
     7.3  Legally Enforceable Agreements.....................................23
     7.4  Litigation.........................................................23




                                        i

<PAGE>

                                                            Page 18 of 108 Pages



                                                                            Page

     7.5  True and Complete Disclosure.......................................23
     7.6  Ownership and Liens................................................24
     7.7  Taxes..............................................................24
     7.8  ERISA..............................................................24
     7.9  Subsidiaries.......................................................24
     7.10  Credit Arrangements...............................................25
     7.11  Licenses and Permits..............................................25
     7.12  No Default on Outstanding Judgments or Orders.....................25
     7.13  Labor Disputes and Acts of God....................................25
     7.14  Insurance.........................................................25
     7.15  Governmental Regulation...........................................25
     7.16  Administrative Priority; Lien Priority............................26
     7.17  Bankruptcy Court Orders...........................................26

ARTICLE 8  AFFIRMATIVE COVENANTS ............................................26
     8.1  Maintenance of Existence...........................................26
     8.2  Conduct of Business................................................26
     8.3  Maintenance of Properties and Executory Contracts and Leases.......27
     8.4  Maintenance of Records.............................................27
     8.5  Maintenance of Insurance...........................................27
     8.6  Compliance with Laws...............................................27
     8.7  Right of Inspection................................................27
     8.8  Reporting Requirements.............................................28
     8.9  Further Assurances.................................................29
     8.10 Due Diligence......................................................30
     8.11 Fiduciary Out......................................................30
     8.12 Chapter 11 Plan Process............................................30

ARTICLE 9  NEGATIVE COVENANTS ...............................................30
     9.1  Debt...............................................................30
     9.2  Liens..............................................................30
     9.3  Bankruptcy Court Orders; Administrative Priority;
             Lien Priority; Payment of Claims................................31
     9.4  Dividends..........................................................32
     9.5  Mergers, Etc.......................................................32
     9.6  Sale of Assets.....................................................32
     9.7  Investments and Acquisitions.......................................32
     9.8  Other Payments.....................................................33
     9.9  Fiscal Year........................................................33
     9.10 Press Releases.....................................................33

ARTICLE 10  EVENTS OF DEFAULT ...............................................33
     10.1  Events of Default.................................................33
     10.2  Consequences of an Event of Default...............................35
     10.3  Certain Remedies..................................................36





                                       ii

<PAGE>

                                                            Page 19 of 108 Pages



                                                                            Page

ARTICLE 11  MISCELLANEOUS  ..................................................37
     11.1  Amendments and Waivers............................................37
     11.2  Binding Effect....................................................37
     11.3  The Lender as Party in Interest...................................37
     11.4  Expenses and Indemnities..........................................37
     11.5  Assignment; Participation.........................................38
     11.6  Notices...........................................................39
     11.7  Table of Contents; Headings.......................................39
     11.8  Severability......................................................39
     11.9  Counterparts......................................................39
     11.10  Integration......................................................39
     11.11  Governing Law....................................................39
     11.12  Waiver of Jury Trial.............................................39


EXHIBITS

     Exhibit A-1         -              Tranche A Note
     Exhibit A-2         -              Tranche B Note
     Exhibit B           -              Security and Pledge Agreement
     Exhibit C           -              Budget
     Exhibit D           -              Final Order
     Exhibit E           -              Term Sheet


SCHEDULES

     Schedule I          -              Subsidiaries and Investments
     Schedule II         -              Credit Arrangements
     Schedule III        -              Licenses and Consents
     Schedule IV         -              Insurance
     Schedule V          -              Out-of-the-Ordinary-Course Subsidiaries
     Schedule VI         -              Liens
     Schedule VII        -              Litigation






                                       iii

<PAGE>



                                                            Page 20 of 108 Pages



          CREDIT  AGREEMENT  dated as of June  29,  1998 by and  between  GEOTEK
COMMUNICATIONS,  INC., a corporation  organized under the laws of Delaware and a
debtor and  debtor-in-possession,  and GEOTEK USA, INC., a corporation organized
under the laws of Delaware and a debtor and debtor-in- possession (together, the
"Borrowers"),  and S-C RIG INVESTMENTS III, L.P., a Delaware limited partnership
(the "Lender").

          The Borrowers filed voluntary petitions for relief under chapter 11 of
title 11 of the United States Code on June 29, 1998 (the "Petition  Date").  The
Borrowers  have requested the Lender to provide the Borrowers with a $10,000,000
loan facility  available in two tranches to facilitate the prompt  documentation
and confirmation of a plan of  reorganization  and to provide working capital to
fund the Borrowers'  business  operations in accordance with the Budget (defined
below),  and,  subject to the terms and conditions set forth herein,  the Lender
has agreed to provide such facility.

          NOW  THEREFORE,  the parties  hereto hereby agree,  effective upon the
Effective Date (as hereinafter defined), as follows:


                                    ARTICLE 1

                          DEFINITIONS; ACCOUNTING TERMS

          1.1  Definitions.  As used in this Agreement the following  terms have
the  following  meanings  (terms  defined in the singular to have a  correlative
meaning when used in the plural and vice versa):

          "Acquisition"  shall  mean any  transaction,  or any series of related
transactions,  consummated after the date of this Agreement, by which any of the
Borrowers  and/or any of their  Subsidiaries  (in one transaction or as the most
recent transaction in a series of transactions)  directly or indirectly acquires
(a) the  business  of, or all or  substantially  all of the assets of, any firm,
corporation or division thereof,  whether through purchase of assets,  merger or
otherwise,  or (b) ownership or control of any corporation,  partnership,  joint
venture or joint adventure.

          "Agreement"  means this Credit  Agreement,  as amended or supplemented
from time to time. References to Articles, Sections, Exhibits, Schedules and the
like refer to the Articles,  Sections,  Exhibits, Schedules and the like of this
Agreement unless otherwise indicated.

          "Banking Day" means any day other than a day on which commercial banks
are not authorized or required to close in New York City.







<PAGE>

                                                            Page 21 of 108 Pages






          "Bankruptcy  Code" shall mean title 11 of the United  States Code,  as
amended.

          "Bankruptcy  Court" shall mean the United States  Bankruptcy Court for
the District of Delaware or such other court having original  jurisdiction  over
the Chapter 11 Cases.

          "Borrowers"  shall  have  the  meaning  assigned  to such  term in the
preamble hereto.

          "Borrowing" means a borrowing hereunder of a Loan.

          "Breakup  Fee"  shall  have the  meaning  given  such term in the Term
Sheet.

          "Budget"  shall mean the itemized  budget for the  Borrowers  attached
hereto as Exhibit C for the period commencing on or about the Effective Date and
ending on or about the Termination Date, as the same may be amended, modified or
supplemented from time to time with the Lender's consent.

          "Capital  Expenditures"  means,  for any period,  the Dollar amount of
gross expenditures  (including Capital Lease Obligations) made for fixed assets,
real  property,  plant  and  equipment,  and  all  renewals,   improvements  and
replacements thereto (but not repairs thereof) incurred during such period.

          "Capital  Lease  Obligations"  shall  mean,  as  to  any  Person,  the
obligations  of such  Person to pay rent or other  amounts  under a lease of (or
other agreement  conveying the right to use) real and/or personal property which
obligations  are required to be classified  and accounted for as a capital lease
on a  balance  sheet  of such  Person  under  GAAP  and,  for  purposes  of this
Agreement,  the  amount  of such  obligations  shall be the  capitalized  amount
thereof, determined in accordance with GAAP.

          "Carve-Out  Expenses"  shall mean (i) amounts  payable  pursuant to 28
U.S.C.  ss.  1930(a)(6)  and (ii)  allowed  fees and  expenses of  professionals
retained  in the  Chapter  11 Cases  pursuant  to  sections  327 and 1103 of the
Bankruptcy Code up to but not exceeding $500,000 in the aggregate  (inclusive of
any holdbacks,  but excluding any unused retainers established prior to the date
hereof); provided, that such amounts shall not be used for attacking Lender, its
claims or interests, the Loans or the Chapter 11 Plan.

          "Chapter 11 Cases" shall mean the Borrowers' cases under chapter 11 of
the Bankruptcy Code pending in the Bankruptcy Court.







<PAGE>

                                                            Page 22 of 108 Pages





          "Chapter 11 Plan" means the chapter 11 plan of reorganization  for the
Borrowers as described in the Term Sheet.

          "Code" means the Internal  Revenue Code of 1986,  as amended from time
to time.

          "Collateral"  shall  have the  meaning  assigned  to such  term in the
Security and Pledge Agreement and in Section 5.1 of this Agreement.

          "Commitments"  shall mean the Tranche A  Commitment  and the Tranche B
Commitment.

          "Consolidated Subsidiary" means any Subsidiary,  whose accounts are or
are required to be consolidated with the accounts of the Borrowers in accordance
with GAAP.

          "Controlled  Group"  shall mean all members of a  controlled  group of
corporations and all trades or businesses  (whether or not  incorporated)  under
common  control  which,  together  with the  Borrowers,  are treated as a single
employer under section 414(b) or 414(c) of the Code.

          "Crisis   Manager"  shall  have  the  meaning  set  forth  in  Section
6.1(a)(xi) hereof.

          "Debt" of any Person shall mean,  at any date  (without  duplication):
(a) all  obligations  of such Person for  borrowed  money or evidenced by bonds,
debentures,  notes or other similar  instruments;  (b) all  obligations  of such
Person to pay the deferred purchase price of property or services,  except trade
accounts  payable  arising in the  ordinary  course of business of such  Person,
provided the same are not overdue in a material amount or are being contested in
good faith;  (c) all Capital Lease  Obligations of such Person;  (d) all Debt of
others  secured by a Lien on any asset of such Person,  whether or not such Debt
is assumed by such  Persons;  (e) all Debt of others  Guaranteed by such person;
(f) all obligations of such Person in respect of letters of credit,  acceptances
or surety or other similar  bonds,  whether  contingent  or  otherwise;  and (g)
obligations in respect of any Interest Rate Protection Agreement.

          "Default"  means any event which with the giving of notice or lapse of
time, or both, would become an Event of Default.

          "Definitive  Plan Documents"  shall mean the definitive  documentation
with respect to the  operative  documents  contemplated  by the Chapter 11 Plan,
including,  without  limitation,  the  documentation  pertaining to the proposed
rights  offering in connection  therewith and the new securities to be issued on
the effective date thereunder.





<PAGE>

                                                            Page 23 of 108 Pages





          "Disclosure  Statement" means the disclosure statement for the Chapter
11 Plan under section 1125 of the Bankruptcy Code.

          "Disposition"  means any sale,  assignment,  lease,  transfer or other
disposition  of any  Collateral  (whether  now  owned  or  hereafter  acquired),
including  under a Plan of  Reorganization  and the  PageNet  Agreement,  by the
Borrowers or any of their Subsidiaries to any Person.

          "Dollars"  and the sign "$" mean lawful money of the United  States of
America.

          "Due Diligence"  shall mean the financial,  business,  operational and
legal due  diligence  (a) of Lender and its advisors of the  Borrowers and their
Subsidiaries  for  purposes  of  the  Loans,   including  with  respect  to  the
Collateral,  and (b) of Lender and their  respective  advisors  with  respect to
Borrowers' business plan and the Chapter 11 Plan.

          "Effective Date" shall have the meaning  attributed thereto in Section
6.1 hereof.

          "ERISA" means the Employee  Retirement Income Security Act of 1974, as
amended  from time to time,  including  any rules  and  regulations  promulgated
thereunder.

          "ERISA  Affiliate" means any corporation or trade or business which is
a member of the same  controlled  group of  corporations  (within the meaning of
section 414(b) of the Code) as the Borrowers or is under common control  (within
the meaning of section 414(c) of the Code) with the Borrowers.

          "Event of  Default"  has the meaning  given such term in Section  10.1
hereof.

          "Facility Documents" means this Agreement,  the Notes and the Security
Documents.

          "Fiduciary  Out"  shall have the  meaning  given such term in the Term
Sheet.

          "Final Order" shall mean an order of the Bankruptcy Court, in form and
substance  satisfactory  to the Lender and its counsel,  finally  approving this
Agreement  and the  extensions  of credit  made and to be made by the  Lender in
accordance with this Agreement in substantially the form of Exhibit D hereto, as
the same may be  amended,  modified or  supplemented  from time to time with the
express written joinder or consent of the Lender.







<PAGE>

                                                            Page 24 of 108 Pages

                                                    




          "Foreign  Collateral"  shall have the  meaning  attributed  thereto in
Section 5.5(c) hereof.

          "GAAP" means generally  accepted  accounting  principles in the United
States of America as in effect from time to time.

          "HNS" means Hughes Network Systems, Inc. and its affiliates.

          "Industrial  Wireless  Agreement"  shall have the meaning  assigned to
such term in Section 5.1 hereof.

          "Interest Rate Protection  Agreement"  shall mean, for any Person,  an
interest rate swap, cap or collar agreement or similar  arrangement between such
Person and one or more  financial  institutions  providing  for the  transfer or
mitigation of interest risks either generally or under specific contingencies.

          "Interim  Order" shall mean an order of the Bankruptcy  Court, in form
and  substance  satisfactory  to the  Lender  and its  counsel,  approving  this
Agreement  and all or a  portion  of the  extension  of credit to be made by the
Lender in accordance with this Agreement on an interim basis, and finding, among
other things,  that the applicable Loans are in good faith and otherwise satisfy
section  364(e) of the Bankruptcy  Code as the same may be amended,  modified or
supplemented  from time to time with the express  written  joinder or consent of
the Lender.

          "Investment"  in any Person shall mean: (a) the  acquisition  (whether
for cash,  property,  services or securities  or  otherwise)  of capital  stock,
bonds,  notes,  debentures,  partnership or other  ownership  interests or other
securities of such Person;  and (b) any deposit with, or advance,  loan or other
extension  of credit  to,  such  Person  (but  excluding  any  advance,  loan or
extension  of  credit  having  a term not  exceeding  90 days  representing  the
purchase  price of  inventory  or  supplies  sold by such  Person or the cost of
services  provided by such Person in the  ordinary  course of  business,  or any
deposit made prior to the Petition Date).

          "Lender" shall have the meaning  assigned to such term in the preamble
hereto.

          "Lien" means any lien  (statutory or  otherwise),  security  interest,
mortgage,  deed of trust,  priority,  pledge,  charge,  conditional  sale, title
retention  agreement,  financing lease or other  encumbrance or similar right of
others, or any agreement to give any of the foregoing.

          "Loans" means the Tranche A Loans and the Tranche B Loans.

          "May Industrial Wireless Agreement" shall have the meaning assigned to
such term in Section 5.1 hereof.






<PAGE>

                                                            Page 25 of 108 Pages
                                                   




          "Multiemployer  Plan" means a Plan defined as such in section 3(37) of
ERISA to which  contributions  have  been  made by the  Borrowers  or any  ERISA
Affiliate and which is covered by Title IV of ERISA.

          "Notes" shall mean, collectively, the Tranche A Note and the Tranche B
Note.

          "Obligations" shall mean all indebtedness, obligations and liabilities
of the Borrowers to the Lender incurred under or related to this Agreement,  the
Notes or any other Facility Document, whether such indebtedness,  obligations or
liabilities  are direct or  indirect,  secured or  unsecured,  joint or several,
absolute  or  contingent,   due  or  to  become  due,  whether  for  payment  or
performance,  now existing or hereafter arising,  including the principal amount
of Loans outstanding, together with interest thereon, and all expenses, fees and
indemnities  hereunder or under any other Facility  Document,  including amounts
due under  Section  11.4 hereof and similar  agreements  contained  in the other
Facility  Documents,  from time to time arising under or in  connection  with or
evidenced  or  secured  by this  Agreement,  the  Notes,  or any other  Facility
Document.

          "PageNet  Agreement"  has the  meaning  given such term in Section 5.1
hereof.

          "PBGC" means the Pension Benefit  Guaranty  Corporation and any entity
succeeding to any or all of its functions under ERISA.

          "Permitted   Investments"   of  any  Person  shall  mean:  (a)  direct
obligations  of the  United  States of  America,  or of any agency  thereof,  or
obligations  guaranteed  as to principal  and  interest by the United  States of
America or any agency  thereof,  in either case  maturing  not more than 90 days
from the date of acquisition  thereof; (b) certificates of deposit issued by any
Lender or trust company organized under the laws of the United States of America
or any state and  having  capital,  surplus  and  undivided  profits of at least
$500,000,000,  maturing  not more  than 90 days  from  the  date of  acquisition
thereof;  (c)  commercial  paper rated A-1 or better or P-1 by Standard & Poor's
Corporation or Moody's Investors Services, Inc., respectively, maturing not more
than 90 days from the date of acquisition  thereof;  (d) post-petition  deposits
under section 366 of the Bankruptcy Code; and (e) Investments outstanding on the
Petition Date and listed on Schedule I hereto.

          "Permitted  Liens"  shall  mean the Liens  described  in clause (b) of
Section 9.2 hereof.

          "Person"  means  an  individual,  partnership,   corporation,  limited
liability company,  business trust, joint stock company,  trust,  unincorporated
association,  joint venture,  governmental authority or other entity of whatever
nature.






<PAGE>

                                                            Page 26 of 108 Pages

                                               




          "Petition  Date" shall have the  meaning  assigned to such term in the
preamble hereto.

          "Plan"  means  any  employee  benefit  or other  plan  established  or
maintained,  or to which  contributions  have been made, by the Borrowers or any
ERISA  Affiliate  and which is covered by Title IV of ERISA or to which  section
412 of the Code applies.

          "Plan  of  Reorganization"  shall  mean  any  chapter  11 plan for the
Borrowers.

          "Pledged  Interests"  shall have the meaning  assigned to such term in
the Security and Pledge Agreement.

          "Post-Default  Rate" shall mean,  in respect of any  principal  of any
Obligation or any other amount under this Agreement or any Note that is not paid
when due (whether at stated maturity, by acceleration,  by optional or mandatory
prepayment or otherwise),  a rate per annum during the period from and including
the due date to but  excluding  the date on which  such  amount  is paid in full
equal to 14%.

          "Security  and Pledge  Agreement"  shall  mean a  Security  and Pledge
Agreement  executed by the  Borrowers  and any  wholly-owned  direct or indirect
Subsidiary of the  Borrowers  that is granting  Lender a Lien on any  Collateral
thereunder,  in favor of the  Lender,  substantially  in the form of  Exhibit  B
hereto and covering the Collateral as identified  therein,  as the same shall be
amended, modified and supplemented and in effect from time to time.

          "Security Documents" shall mean, collectively, the Security and Pledge
Agreement,  all Uniform  Commercial Code financing  statements  required by this
Agreement or the Security and Pledge  Agreement which have been or will be filed
with respect to the security interests in personal property and fixtures created
pursuant thereto, and all additional security  agreements,  mortgages or Uniform
Commercial Code financing statements heretofore or hereafter delivered or filed,
as the case may be, by the  Borrowers  and any direct or indirect  Subsidiary of
the Borrowers that is granting  Lender a Lien on any of the Collateral  pursuant
to the terms of this Agreement or the Security and Pledge Agreement.

          "Subsequent Advance Date" shall have the meaning assigned to such term
in Section 6.1(b) hereof.

          "Subsidiary"  means, as to any Person, any corporation or other entity
of which at least a majority  of the  securities  or other  ownership  interests
having ordinary voting power  (absolutely or  contingently)  for the election of
directors or other persons  performing  similar  functions are at the time owned
directly or indirectly by such Person.






<PAGE>

                                                            Page 27 of 108 Pages
                                           




          "Term  Sheet"  shall  mean a term sheet in  substantially  the form of
Exhibit E hereto  setting forth the terms and conditions of the Chapter 11 Plan,
as the same may be amended, modified and supplemented from time to time with the
express written consent of the Lender.

          "Termination Date" shall mean the earlier of (a) October 15, 1998, (b)
the effective  date of a Plan of  Reorganization,  and (c) the  occurrence of an
Event of Default.

          "Termination  Event" shall mean (a) a "Reportable  Event" described in
section  4043 of ERISA  and the  regulations  issued  thereunder  (other  than a
"Reportable  Event" not subject to the  provision  for 30-day notice to the PBGC
under such regulations), or (b) the withdrawal of the Borrowers or any member of
the  Controlled  Group  from a  Plan  during  a  plan  year  in  which  it was a
"substantial  employer" as defined in section  4001(a)(2)  of ERISA,  or (c) the
filing  of a notice of intent to  terminate  a Plan or the  treatment  of a Plan
amendment as a termination  under section 4041 of ERISA,  or (d) the institution
of  proceedings  to  terminate  a Plan by the PBGC,  or (e) any  other  event or
condition  which might  constitute  grounds  under section 4042 of ERISA for the
termination of, or the appointment of a trustee to administer, any Plan.

          "Third Party  Transaction"  shall have the meaning  given such term in
the Term Sheet.

          "Tranche A Commitment" shall mean the obligation of the Lender to make
Loans  to  the  Borrowers  in  an  aggregate  principal  amount  not  to  exceed
$7,000,000.

          "Tranche A Loans" shall mean the Loans  provided for in Section 2.1(a)
hereof.

          "Tranche A Note" shall mean the  promissory  grid note provided for by
Section  2.6(a) hereof and all promissory  notes  delivered in  substitution  or
exchange therefor,  in each case, as the same shall be modified and supplemented
and in effect from time to time.

          "Tranche B Commitment" shall mean the obligation of the Lender to make
Loans  to  the  Borrowers  in  an  aggregate  principal  amount  not  to  exceed
$10,000,000  minus the amount of any  Tranche A Loans  actually  extended to the
Borrowers.

          "Tranche B Loans" shall mean the Loans  provided for in Section 2.1(b)
hereof.






<PAGE>

                                                            Page 28 of 108 Pages





          "Tranche B Note" shall mean the  promissory  grid note provided for in
Section  2.6(b) hereof and all promissory  notes  delivered in  substitution  or
exchange therefor,  in each case, as the same shall be modified and supplemented
and in effect from time to time.

          "Unfunded  Vested  Liabilities"  means,  with respect to any Plan, the
amount (if any) by which the present value of all vested benefits under the Plan
exceeds the fair market value of all Plan assets allocable to such benefits,  as
determined on the most recent  valuation date of the Plan and in accordance with
the provisions of ERISA for calculating the potential liability of the Borrowers
or any ERISA Affiliate to the PBGC or the Plan under Title IV of ERISA.

          1.2  Accounting  Principles.  Except  as  otherwise  provided  in this
Agreement,  all  computations and  determinations  as to accounting or financial
matters and all financial statements to be delivered hereunder shall be made and
prepared in accordance  with GAAP and all accounting  and financial  terms shall
have the meanings ascribed to such terms by GAAP.


                                    ARTICLE 2

                                   THE CREDITS

          2.1 The Commitments.

               (a) Subject to the terms and  conditions  set forth  herein,  the
Lender agrees to make one or more multiple draw Tranche A Loans to the Borrowers
from time to time during the period from June 29, 1998 in an aggregate principal
amount not to exceed the  Tranche A  Commitment.  Tranche A Loans once repaid or
prepaid may not be reborrowed.

               (b) Subject to the terms and  conditions  set forth  herein,  the
Lender agrees to make one or more multiple draw Tranche B Loans to the Borrowers
from time to time during the period from the Subsequent Advance Date through the
Termination  Date in an aggregate  principal  amount not to exceed the Tranche B
Commitment. Tranche B Loans once repaid or prepaid may not be reborrowed.

               (c) Notwithstanding  anything herein to the contrary,  the Lender
shall  have no  obligation  to make  Loans  hereunder  in excess of the  amounts
authorized by the Interim  Order or the Final Order,  as the case may be, in the
Chapter 11 Cases,  and any  reference  herein to the  amount of any  Commitments
shall be automatically reduced to the amounts so authorized.

          2.2  Borrowings.  The  Borrowers  shall give the Lender notice of each







<PAGE>

                                                            Page 29 of 108 Pages




Borrowing  of Loans  hereunder  as provided  in Section 4.4 hereof.  On the date
specified for each Borrowing  hereunder,  the Lender shall, subject to the terms
and conditions of this Agreement, make available the amount of such Borrowing to
the Borrowers by depositing  the same, in  immediately  available  funds,  in an
account of the  Borrowers  designated  for such purpose from time to time by the
Borrowers.

          2.3 Changes of Commitments.

               (a) The Commitments shall be automatically reduced to zero on the
Termination Date.

               (b) The  Borrowers  shall have the right at any time or from time
to time (i) so long as no Loans are  outstanding,  to terminate the  Commitments
and (ii) to reduce the unused amount of the  Commitments;  provided that (x) the
Borrowers shall give notice of each such termination or reduction as provided in
Section 4.4 hereof and (y) each partial reduction shall be in an amount at least
equal to $100,000 or in multiples of $10,000 in excess thereof.

               (c)  The  Commitments  once  terminated  or  reduced  may  not be
reinstated.

          2.4 Fees.  In addition to the amounts  provided in Section 11.4 hereof
and any similar provisions in the other Facility Documents,  the Borrowers shall
be obligated  to pay Lender a facility  fee of  $150,000,  which amount shall be
paid by means of Lender's deduction thereof from the first Tranche A Loan.

          2.5 Use of Proceeds.  The  Borrowers  hereby  covenant,  represent and
warrant  that the proceeds of the Loans made to them will be used solely to fund
the Borrowers'  continued  ordinary course operations and working capital needs,
in each case  solely in  accordance  with the  Budget  (without  limitation,  in
Permitted  Investments) and to facilitate,  among other things,  the conduct and
completion of Due Diligence and the prompt documentation, filing and approval or
confirmation,  as the case may be, of the Disclosure  Statement,  the Chapter 11
Plan and the  Definitive  Plan  Documents  within  the times  specified  in this
Agreement.  Without limiting the foregoing, the Borrowers may not, and shall not
permit  any of  their  Subsidiaries  to,  use the  Proceeds  of any Loan to make
Acquisitions or Investments, including any partnership or joint venture payment,
or for attacking the Lender,  its claims or interests,  the Loans or the Chapter
11 Plan;  provided  that the proceeds of the Loans may be used to make  ordinary
course   payments   (as   provided   in  the   Budget)   in   respect   of  Anam
Telecommunications,  Geotek Argentina,  S.A., GMSI, Inc. and Geotek Technologies
Israel (1992) Ltd.







<PAGE>

                                                            Page 30 of 108 Pages






          2.6 Notes.

               (a) The  Tranche A Loans  made by the Lender  hereunder  shall be
evidenced by a single promissory note of the Borrowers in substantially the form
of Exhibit A-1 hereto,  dated as of the date hereof,  payable to the Lender in a
principal  amount equal to the amount of the Tranche A Commitment  as originally
in effect and otherwise  duly  completed.  The date and amount of each Tranche A
Loan made by the Lender to the Borrowers,  and all payments and prepayments made
on account of the  principal  thereof,  shall be  recorded  by the Lender on its
books and,  prior to any transfer of the Tranche A Note,  endorsed by the Lender
on the  schedule  attached to such Tranche A Note or any  continuation  thereof;
provided,  however,  that any  failure by the  Lender to make any such  notation
shall not  affect  the  obligations  of the  Borrowers  hereunder  or under such
Tranche A Note in respect of such obligations.

               (b) The  Tranche B Loans  made by the Lender  hereunder  shall be
evidenced by a single promissory note of the Borrowers in substantially the form
of Exhibit A-2 hereto,  dated as of the date hereof,  payable to the Lender in a
principal  amount equal to the amount of the Tranche B Commitment  as originally
in effect and otherwise  duly  completed.  The date and amount of each Tranche B
Loan made by the Lender to the Borrowers,  and all payments and prepayments made
on account of the  principal  thereof,  shall be  recorded  by the Lender on its
books and,  prior to any transfer of the Tranche B Note,  endorsed by the Lender
on the  schedule  attached to such Tranche B Note or any  continuation  thereof;
provided,  however,  that any  failure by the  Lender to make any such  notation
shall not  affect  the  obligations  of the  Borrowers  hereunder  or under such
Tranche B Note in respect of such obligations.

          2.7 Optional Prepayments. Subject to Section 4.3 hereof, the Borrowers
shall  have the right to  prepay  the  Obligations,  at any time or from time to
time,  provided  the  Borrowers  shall  give  the  Lender  notice  of each  such
prepayment  as provided in Section 4.4 hereof (and,  upon the date  specified in
any such notice of  prepayment,  the amount to be prepaid  shall  become due and
payable hereunder).

          2.8 Mandatory Prepayments and Reductions of Commitments.

               (a) Sale of Assets,  Etc.. Without limiting the obligation of the
Borrowers to obtain the consent of the Lender  pursuant to Section 9.6 hereof to
any Disposition not otherwise permitted hereunder, the Borrowers will prepay, to
the extent of such Disposition proceeds,  the Obligations  outstanding,  and the
Commitments shall be automatically  reduced, upon the closing of any Disposition
to the extent of such Disposition proceeds,  including,  without limitation,  in
the case of each of the following Dispositions: the PageNet Agreement.





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                                                            Page 31 of 108 Pages





               (b) Exceeding  Commitments.  If at any time the Loans outstanding
hereunder  exceed the  Commitments  then  available,  then the  Borrowers  shall
immediately repay the Loans in the amount of such excess.


                                    ARTICLE 3

                       PAYMENTS OF PRINCIPAL AND INTEREST

          3.1 Amortization.

               (a) To the extent not due and  payable  earlier  pursuant  to the
terms of this Agreement, the entire unpaid principal amount of each of the Loans
shall be due and payable on the Termination Date.

          3.2 Interest.

               (a) The Borrowers hereby promise to pay to the Lender interest on
the unpaid  principal amount of each Loan, for the period from and including the
date of such Loan to but  excluding the date such Loan shall be paid in full, at
a rate per annum equal to 12%.

               (b) Notwithstanding  the foregoing,  the Borrowers hereby promise
to pay to the Lender interest on the Loans at the Post-Default Rate (i) upon the
occurrence and during the continuance of an Event of Default  hereunder and (ii)
on any principal of any Loan and on any other  Obligation of the Borrowers which
shall not be paid in full when due (whether at stated maturity, by acceleration,
by mandatory prepayment or otherwise), for the period from and including the due
date thereof to but excluding the date the same is paid in full.

               (c) Accrued  interest  on the Loans  shall be payable  monthly on
last Banking Day of each calendar month.

               (d)  Notwithstanding  anything  herein to the contrary,  interest
payable at the  Post-Default  Rate shall be payable in cash from time to time on
demand.








<PAGE>

                                                            Page 32 of 108 Pages





                                    ARTICLE 4

                          PAYMENTS; COMPUTATIONS; ETC.

          4.1 Payments.

               (a) Except to the extent otherwise  provided herein, all payments
of  principal,  interest  and other  amounts to be made by the  Borrowers to the
Lender under this Agreement, the Notes and the other Facility Documents shall be
made in Dollars, in immediately  available funds, without deduction,  set-off or
counterclaim,   into  an  account  in  accordance   with  the   following   wire
instructions:  Bank  of  New  York,  aba  #021000018  credit  to  Arnhold  &  S.
Bleichroeder Account #8540905100,  for further credit to Account # 33-00713, S-C
Rig Investments  III, L.P. (or such other account  designated by the Lender from
time to time) not later  than 1:00 p.m.  New York time on the date on which such
payment  shall  become due (each such  payment  made after such time on such due
date to be deemed to have been made on the next succeeding Banking Day).

               (b) The  Borrowers  shall,  at the time of making any  payment or
prepayment  under  this  Agreement  or  any  Note,  specify  to the  Lender  the
Obligations  or other amounts  payable by the Borrowers  hereunder to which such
payment  is to be  applied  (and in the  event  that  the  Borrowers  fail to so
specify,  or if an Event of Default has occurred and is  continuing,  the Lender
may apply the amount of such  payment  received  by it in such  manner as it may
determine to be appropriate).

               (c) If the due date of any payment  under this  Agreement  or any
Note would otherwise fall on a day that is not a Banking Day, such date shall be
extended to the next  succeeding  Banking Day, and interest shall be payable for
any principal so extended for the period of such extension.

          4.2 Computations. Interest hereunder shall be computed on the basis of
a year of 360 days.

          4.3 Minimum  Amounts.  Each  Borrowing  hereunder or optional  partial
prepayment  of  principal  of the Loans  shall be in an amount at least equal to
$100,000 or in multiples of $10,000 in excess thereof.

          4.4  Certain  Notices.  Notices  by the  Borrowers  to the  Lender  of
terminations  or reductions of the  Commitments,  of Borrowings  and of optional
prepayments of the Obligations  shall be irrevocable and shall be effective only
if  received  by the Lender not later than 12:00 noon New York time (or,  in the





<PAGE>

                                                            Page 33 of 108 Pages




case of the  Tranche A Loan,  5:00 p.m.  New York time) on the number of Banking
Days prior to the date of the  relevant  termination,  reduction,  borrowing  or
prepayment specified below:



                                                             Number of
                                                           Banking-Days
                     Notice                                   Prior
          ------------------------------               -------------------

          Termination or reduction of                           2
          Commitments

          Borrowing or prepayment of Loans                      1


Each such notice of termination  or reduction  shall specify the amount and type
of  the  Commitment  to be  terminated  or  reduced.  Each  notice  of  optional
prepayment  shall  specify the amount and type of Loan to be  prepaid,  and each
such notice of Borrowing shall specify the type of Loan to be borrowed  (subject
to Section 4.3 hereof) and the date of borrowing or optional  prepayment  (which
shall be a Banking Day).


                                    ARTICLE 5

                        SECURITY: ADMINISTRATION PRIORITY

          5.1 Grant of Lien and Security Interest.

               (a) Pursuant to this  Agreement and the Security  Documents,  the
Borrowers hereby assign, pledge, transfer,  grant, confirm and set over unto the
Lender, and hereby grant and create in favor of the Lender, and shall cause each
of their  wholly-owned,  direct  and  indirect  Subsidiaries  simultaneously  to
assign,  pledge,  transfer,  grant,  confirm and set over unto the  Lender,  and
simultaneously  grant and create in favor of the Lender, a security  interest in
and to, the  Collateral,  consisting  of all assets not subject to any  existing
Lien that is not a  Permitted  Lien of the  Borrowers  and  their  wholly-owned,
direct and indirect  Subsidiaries  (without  limitation  excluding  any licenses
owned by or stock of Geotek U.S. Networks,  Inc., Geotek License Holdings,  Inc.
and MacDermott Communications,  Inc.), including, without limitation, (i) to the
extent grantable,  the rights in respect of each of the Borrowers' Subsidiaries'
68 Special Mobile Radio licenses described on Annex 1 to the Security and Pledge
Agreement  (as to such 68  licenses,  the  "Pledged  SMR  Licenses"),  (ii)  the
Borrowers'  interest  in and  claims  against  each of Anam  Telecommunications,
Geotek Argentina, S.A., and, to the extent grantable, GMSI, Inc., and any direct
or  indirect  wholly-owned  Subsidiary  of a Borrower  that holds a Pledged  SMR
License,  (iii) all rights of the Borrowers to receive the  consideration  under
and/or to the proceeds of (x) that certain SMR Frequency Exchange Agreement with







<PAGE>

                                                            Page 34 of 108 Pages




Paging Network of America,  Inc.  ("PageNet") dated March 14, 1997 (the "PageNet
Agreement"),  with the exception of the New York MTA license assigned by PageNet
to Geotek U.S.  Networks,  Inc., and (y) that certain  Purchase  Agreement dated
April 3, 1998 by and between  Geotek  Communications,  Inc.,  Gelico,  Inc.  and
Industrial Wireless  Technologies,  Inc. ("Industrial Wireless Agreement"),  and
(iv)  to  the  extent  grantable,  all  unencumbered  accounts,  chattel  paper,
contracts, documents, equipment, general intangibles,  instruments and equipment
of the Borrowers and their wholly- owned, direct and indirect Subsidiaries, with
the  exception of the Purchase  Agreement  among  Geotek  Communications,  Inc.,
Geotek US Networks,  Inc. and Industrial Wireless Technologies,  Inc., dated May
26,  1998  (the "May  Industrial  Wireless  Agreement")  and in each  case,  not
constituting  "Excluded  Property"  under the Security and Pledge  Agreement and
subject to any existing  Liens with the exception of Permitted  Liens,  together
with  (v)  all  proceeds,  rents,  products  and  profits  of any and all of the
foregoing, all as described in the Security Documents.

               (b) The  liens  and  security  interests  in favor of the  Lender
referred to in Section 5.1(a) hereof and under the Security  Documents  shall be
valid and perfected liens and security  interests,  prior to all other Liens and
interests,  other than Permitted Liens,  and shall have a second priority,  with
respect to such Collateral, junior only to the Permitted Liens thereon; provided
that the liens and  security  interests  in favor of the Lender  referred  to in
Section 5.1(a) hereof and under the Security  Documents  shall be subject to the
Carve-Out  Expenses.  All liens and  security  interests  in favor of the Lender
hereunder and under the Security  Agreements  and their priority shall remain in
effect until the Commitments  have been terminated and all Obligations have been
irrevocably repaid in cash in full.

          5.2  Administrative  Priority.  The  Borrowers  hereby  agree that the
Obligations of the Borrowers shall constitute allowed administrative expenses in
the Chapter 11 Cases having super-priority status under section 364(c)(1) of the
Bankruptcy  Code over all other  administrative  expenses and  unsecured  claims
against the  Borrowers  now existing or hereafter  arising of any kind or nature
whatsoever,  including without limitation all administrative  expenses,  charges
and claims of the kind specified in sections 503(b),  506(c),  726(b) and 507(b)
of the Bankruptcy Code, subject, as to priority, only to Carve-Out Expenses.

          5.3 Grants,  Rights and  Remedies  Cumulative.  The liens and security
interests  granted pursuant to Section 5.1(a) hereof and the Security  Documents
and the  administrative  priority  granted pursuant to Section 5.2 hereof may be
independently  granted by the Facility  Documents,  the Interim Order, the Final
Order and by other agreements hereafter entered into. This Agreement,  the other
Facility Documents, the Interim Order, the Final Order and such other agreements
hereinafter  entered into  supplement  each other,  and the grants,  priorities,
rights and remedies of the Lender hereunder and thereunder are cumulative.





<PAGE>

                                                            Page 35 of 108 Pages





          5.4 No Filings Required.  The liens and security interests referred to
in Section  5.1(a) hereof and in the other  Facility  Documents  shall be deemed
valid and  perfected by entry of the Interim  Order or the Final  Order,  as the
case may be,  whichever  occurs first.  The Lender shall not be required to file
any financing  statements,  notices of Lien, mortgages or similar instruments in
any jurisdiction or filing office, or to take possession of any Collateral or to
take any other  action in order to validate  or perfect  the liens and  security
interests  granted by or pursuant to this  Agreement,  the Interim  Order or the
Final Order, as the case may be, or any other Facility  Document.  If the Lender
shall, in its sole  discretion,  from time to time choose to file such financing
statements,  notices of Lien, mortgages or similar instruments,  take possession
of any  Collateral,  or take any other  action to  validate  or perfect any such
security  interests or liens,  all such  documents  shall be deemed to have been
filed or recorded at the time and on the date of entry of the Interim  Order or,
if no Interim Order is obtained,  the Final Order, and the Borrowers  consent to
the  modification of the automatic stay under section 362 of the Bankruptcy Code
to permit  the  Lender to file such  financing  statements,  notices  of Lien or
similar instruments, take possession of any collateral, or take any other action
to validate or perfect any such security interests or Liens.

          5.5  Survival.   The  liens,  security  interests,   lien  priorities,
administrative  priorities  and other rights and remedies  granted to the Lender
pursuant  to this  Agreement  and the  other  Facility  Documents  (specifically
including but not limited to the existence, perfection and priority of the liens
and  security  interests  provided  herein and therein,  and the  administrative
priority provided above and therein) shall not be modified,  altered,  primed or
impaired  (including  by the grant of a junior  Lien on any  Collateral)  in any
manner by any other  financing or extension of credit or  incurrence  of Debt by
the Borrowers (pursuant to section 364 of the Bankruptcy Code or otherwise),  or
by any dismissal or conversion of the Chapter 11 Cases,  or, with respect to any
Loans then outstanding,  any modification,  amendment or reversal or stay of the
Interim  Order or the  Final  Order,  as the case may be, or by any other act or
omission  whatsoever.  Without  limitation,   notwithstanding  any  such  order,
financing, extension, incurrence, dismissal, conversion, act of omission:

               (a) except for the  Carve-Out  Expenses,  no costs or expenses of
administration which have been or may be incurred in the Chapter 11 Cases or any
conversion  of the same or in any  other  proceedings  related  thereto,  and no
priority  claims,  are or will be prior to or on a parity  with any claim of the
Lender against the Borrowers in respect of any Obligation;

               (b) the liens and  security  interests in favor of the Lender set
forth in Section 5.1(a) hereof and in the Facility  Documents  shall  constitute
valid and perfected first priority Liens and security interests, subject only to
the Permitted Liens to which such liens and security  interests  hereunder shall
be  subordinate  and junior,  and shall be prior to all other Liens and security
interests,  now existing or hereafter arising, in favor of any other creditor or







<PAGE>

                                                            Page 36 of 108 Pages




any other Person whatsoever; provided that all such liens and security interests
of the Lender set forth in Section  5.1(a) hereof any in the Facility  Documents
shall be subject to the Carve-Out Expenses; and

               (c) the liens and  security  interests in favor of the Lender set
forth in Section 5.1(a) hereof and in the Facility  Documents shall be valid and
perfected  without  the  necessity  that the Lender file  financing  statements,
notices of lien, mortgages or otherwise perfect its Liens and security interests
under  applicable  nonbankruptcy  law  except for such  Collateral  as is or may
hereafter be located outside of the  territorial  limits of the United States of
America ("Foreign Collateral") to the extent that the same may not be subject to
the  jurisdiction  of the  Bankruptcy  Court.  Borrowers  shall  take all  steps
required to perfect Lender's security  interest in the Foreign  Collateral under
applicable non-bankruptcy law as promptly as practicable,  but in no event later
than July 8, 1998.


                                    ARTICLE 6

                              CONDITIONS PRECEDENT

          6.1 Conditions Precedent.

               (a) Tranche A Loans. The obligation of the Lender to make Tranche
A Loans available hereunder shall occur on the date (the "Effective Date") on or
after June 29, 1998 that the Lender shall have received  each of the  following,
in form and substance satisfactory to the Lender and its counsel:

                    (i) the Notes duly executed by the Borrowers;

                    (ii) the Security and Pledge  Agreement duly executed by the
Borrowers  and  any  Subsidiary  of  the  Borrowers  with  an  interest  in  the
Collateral,  together with such financing  statements  executed by the Borrowers
and such  Subsidiaries  which in the  opinion  of the Lender  are  desirable  to
perfect the liens and security  interests created hereby and by the Security and
Pledge Agreement;

                    (iii)  the  stock   certificates   evidencing   the  Pledged
Interests,  accompanied by undated stock powers duly executed in blank; provided
that stock  certificates  evidencing  Foreign  Collateral  shall be  received by
Lender as promptly as practicable;

                    (iv)  evidence  that either the  Interim  Order or the Final
Order,  as the case may be,  shall  have been  entered by the  Bankruptcy  Court
approving the  Commitments  (or such lesser amount as shall be acceptable to the
Lender in its sole  discretion),  and each such Order shall be in full force and
effect and shall not have been reversed, stayed, modified or amended;






<PAGE>

                                                            Page 37 of 108 Pages






                    (v) a copy of the charter, as amended and in effect, of each
of the  Borrowers and of each of the  "Domestic  Issuers"  under Annex 2A of the
Security and Pledge  Agreement,  certified as of recent date by the Secretary of
State of the State of Delaware, or, in the case of each Domestic Issuer which is
not a  Delaware  entity,  by an  officer  of  the  state  of  such  Subsidiary's
incorporation or organization, and a certificate from such Secretary of State or
officer dated as of recent date as to the good standing of and charter documents
filed by the Borrowers and such Subsidiary;

                    (vi)  a  certificate  from  the  Secretary  of  each  of the
Borrowers and of any Subsidiary of the Borrowers that is a party to any Facility
Document,  dated the Effective  Date,  certifying (A) that the attached are true
and  complete  copies of the by-laws of the  Borrowers  and such  Subsidiary  as
amended  and in  effect  at all  times  from the date on which  the  resolutions
referred  to in  clause  (B)  were  adopted  to and  including  the date of such
certificate,  (B)  that  attached  thereto  is  a  true  and  complete  copy  of
resolutions  duly adopted by the Board of Directors of each of the Borrowers and
of any  Subsidiary  of the Borrowers  that is a party to any Facility  Document,
authorizing  the execution,  delivery and  performance of this Agreement and the
other  Facility  Documents to which the Borrowers or such  Subsidiary is a party
and the extensions of credit hereunder,  and that such resolutions have not been
modified,  rescinded  or amended and are in full force and effect,  (C) that the
charter  of each of the  Borrowers  and such  Subsidiary  that is a party to any
Facility  Document  has not been  amended  since  the date of the  certification
thereto furnished pursuant to clause (v) above, and (D) as to the incumbency and
specimen signature of each officer of the Borrowers and Subsidiary executing the
Facility Documents;

                    (vii) a  certificate  of an officer of each of the Borrowers
and of any Subsidiary of the Borrowers that is a party to a Facility Document as
to the incumbency  and specimen  signature of the Secretary of the Borrowers and
such Subsidiary;

                    (viii) a certificate of a duly authorized officer of each of
the Borrowers,  dated the Effective Date,  stating that (A) the  representations
and  warranties  in  Article  7 of  this  Agreement  and in the  other  Facility
Documents  are true and  correct  on such date as though  made on and as of such
date as to such  entity,  (B) no event  has  occurred  and is  continuing  which
constitutes a Default or an Event of Default  hereunder and (C) from the date of
execution of the Term Sheet  through the  Effective  Date,  no material  adverse
change  in the  assets,  business,  operations  or  financial  condition  of the
Borrowers  has  occurred or become  known  since the  Petition  Date,  except as
disclosed in writing by the Borrowers to the Lender prior to the Effective Date,
except as  resulting  from the  commencement  of the  Chapter  11  Cases,  and a







<PAGE>

                                                            Page 38 of 108 Pages




certificate of a duly authorized officer of any Subsidiary of the Borrowers that
is a party to a Facility  Document,  dated the Effective Date,  stating that (A)
the representations and warranties in the Security and Pledge Agreement are true
and correct on such date as though made on and as of such date as to such entity
and (B) from the date of execution of the Term Sheet through the Effective Date,
no material  adverse  change in the assets,  business,  operations  or financial
condition of any  Subsidiary of the Borrowers has occurred or become known since
the Petition  Date,  except as disclosed  in writing by such  Subsidiary  of the
Borrowers to the Lender prior to the Effective  Date,  except as resulting  from
the commencement of the Chapter 11 Cases;

                    (ix) the liens and security interests in favor of the Lender
pursuant  hereto  and the  Security  and  Pledge  Agreement  shall be valid  and
perfected  first priority liens prior (except for Permitted  Liens to which such
Liens and security  interests are  subordinate and junior) to all other Liens in
or on the Collateral  intended to be subject  thereto,  subject to the Carve-Out
Expenses;

                    (x) the Term Sheet  executed and  delivered by the Borrowers
and the Borrowers' active pursuit of confirmation of the Chapter 11 Plan;

                    (xi) on or before June 29, 1998,  the  Borrowers  and Lender
shall have agreed upon the identity of, and the  Borrowers  shall have agreed to
retain a crisis manager and a restructuring and reorganization financial advisor
and/or other  consultants to the Borrowers  (collectively,  "Crisis Manager") to
perform,  subject to applicable  fiduciary duties and the boards of directors of
the Borrowers,  all  postpetition  functions of the Borrowers'  chief  executive
officer, adherence to the Budget,  consolidation of operations,  facilitation of
Due  Diligence  in respect of the  Chapter 11 Plan and the  business  plan,  and
preparation of a revised  business plan (the parties agree (A) upon Zolfo Cooper
Management, LLC (per Leonard LoBiondo and Steven Marotta), assisted with respect
to the Business Plan by Renaissance  Worldwide,  Inc., as Crisis Manager and (B)
that the  Borrowers  shall not  dismiss or replace  the Crisis  Manager  without
obtaining  Bankruptcy Court approval and, if terminated  without cause,  without
having  agreed  with the  Lender  on a  replacement  Crisis  Manager;  provided,
however,  that if the Borrowers dismiss the Crisis Manager for cause, they agree
to replace the Crisis  Manager as soon as  reasonably  practicable  with another
Crisis Manager acceptable to the Lender);

                    (xii)  commencing  on June 26,  1998,  the  Borrowers  shall
facilitate  and  cooperate  with the Due  Diligence  of Lender in respect of the
Chapter 11 Plan and the business plan;







<PAGE>

                                                            Page 39 of 108 Pages






                    (xiii)  evidence  that  all  fees,  retainers  and  expenses
required by this Agreement to be paid on or before the Effective Date shall have
been paid in full (or shall have been  authorized  by the  Interim  Order or the
Final Order, as the case may be);

                    (xiv)  the  Lender  shall  otherwise  be  satisfied  in  all
material  respects  (in its  sole  determination)  with the  results  of its Due
Diligence,  which Due  Diligence  shall be completed on or before June 29, 1998;
and

                    (xv) such other  approvals,  opinions  or  documents  as the
Lender may reasonably request.

               (b) Tranche B Loans. The obligation of the Lender to make Tranche
B Loans  available  hereunder shall occur on the date (the  "Subsequent  Advance
Date") on or after August 10, 1998 that the Lender shall have  received  each of
the following, in form and substance satisfactory to the Lender and its counsel:

                    (i) evidence that the Effective Date shall have occurred;

                    (ii)  evidence  that the Final  Order shall be in full force
and  effect  approving  the  Commitments  (or  such  lesser  amount  as shall be
acceptable  to the  Lender  in its sole  discretion)  and  shall  not have  been
reversed, stayed, modified or amended;

                    (iii) the Bankruptcy  Court shall have scheduled the hearing
on approval of the  Disclosure  Statement  under section 1125 of the  Bankruptcy
Code to occur no later than August 15, 1998;

                    (iv) the  Borrowers  shall be actively  pursuing  Bankruptcy
Court approval of the Disclosure  Statement and  confirmation  of the Chapter 11
Plan on or before September 22, 1998;

                    (v) certificates  from a duly authorized  officer of each of
the Borrowers and any of the Borrowers' Subsidiaries, as applicable, of the type
referred to in clauses (a)(viii) and (a)(ix) above, dated the Subsequent Advance
Date and such certificates are true and accurate in all material respects; and

                    (vi) the Borrowers  shall be  continuing  to facilitate  and
cooperate with the Due Diligence described in clause (a)(xii) above; and








<PAGE>

                                                            Page 40 of 108 Pages





                    (vii) the Borrowers shall not have dismissed or replaced the
Crisis Manager referred to in clause (a)(xi) above without obtaining  Bankruptcy
Court approval and, if terminated without cause,  without having agreed with the
Lender on a replacement Crisis Manager; provided, however, that if the Borrowers
dismiss the Crisis  Manager for cause,  they agree to replace the Crisis Manager
as soon as reasonably  practicable with another Crisis Manager acceptable to the
Lender.

          6.2 Additional Conditions  Precedent.  The obligation of the Lender to
make any Loan hereunder is subject to the further  conditions  precedent that on
the date of any Borrowing of a Loan the following statements shall be true:

               (a) the  representations  and warranties made by the Borrowers in
Article 7 hereunder  and in each of the other  Facility  Documents  are true and
correct in all  material  respects  on and as of the date of such  Borrowing  as
though made on and as of such date;

               (b)  No  Default  or  Event  of  Default  has   occurred  and  is
continuing, or would result from such Borrowing;

               (c) On the date of such Borrowing, the Interim Order or the Final
Order,  as the case may be, shall be in full force and effect and shall not have
been reversed,  stayed, modified or amended. Unless the Lender shall have joined
in or expressly  consented  in writing to the same,  there shall be no motion of
the Borrowers pending: (i) to reverse,  modify or amend the Interim Order or the
Final Order, as the case may be, or (ii) to permit any administrative expense or
unsecured claim against the Borrowers, now existing or hereafter arising, of any
kind or nature whatsoever,  to have administrative priority equal or superior to
the priority of the Lender in respect of the  Obligations,  except for Carve-Out
Expenses, or (iii) to grant or permit the granting of a Lien on any Collateral;

               (d) The aggregate  unpaid principal amount of the Loans shall not
exceed, and after giving effect to the requested  Borrowing will not exceed, the
Commitments then available; and

               (e) Up to  fourteen  days in advance of the date of a  Borrowing,
the Borrower  may request a Borrowing,  the amount of which shall not exceed the
Borrowers'  anticipated  ordinary course expenses as set forth in the Budget for
the fourteen day period  following the date of such Borrowing (i.e. two weeks in
advance).  In the event there is a dispute between the parties as to whether the
Borrowers are in compliance  with the Budget,  the Lender shall continue to fund
Loans  into a  segregated  account of the  Borrowers  that may not be drawn upon
except  pursuant  to an order of the  Bankruptcy  Court or an  agreement  of the
parties hereto.  Without limiting any other provision of this Agreement,  Lender
shall inform the Borrower, either orally or in writing within 3 business days of
a request for Borrowing whether the Borrowers are in compliance with the Budget.






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                                                            Page 41 of 108 Pages






          6.3 Certification.  Each notice of a Borrowing shall be accompanied by
a certificate of a duly authorized  officer of each of the Borrowers  certifying
that the  statements  contained  in Section 6.2 are true and correct both on the
date of such notice and, unless the Borrowers  otherwise notify the Lender prior
to such Borrowing, as of the date of such Borrowing.


                                    ARTICLE 7

                         REPRESENTATIONS AND WARRANTIES

          The Borrowers hereby represent and warrant that upon the occurrence of
the  Effective  Date (in each case where there is a reference to a Subsidiary in
this Article 7, such  reference  shall be limited to the  Borrowers'  direct and
indirect wholly-owned Subsidiaries):

          7.1 Incorporation,  Good Standing and Due  Qualification.  Each of the
Borrowers and their  Subsidiaries  (a) except as disclosed in Schedule III, is a
corporation duly organized, validly existing and in good standing under the laws
of the jurisdiction of its organization;  (b) has the requisite  corporate power
and  has  all  material  governmental  licenses,  authorizations,  consents  and
approval  necessary  to own its assets,  except as  disclosed  in  Schedule  III
hereto,  and carry on the  business in which it is now engaged or proposed to be
engaged; and (c) except as disclosed in Schedule III hereto is duly qualified to
do business in all  jurisdictions in which the nature of the business  conducted
by the Borrowers and their Subsidiaries  makes such qualification  necessary and
where  failure  to so  qualify  would  have a  material  adverse  effect  on its
business, financial condition or operations.

          7.2  Corporate  Power and  Authority;  No  Conflicts.  The  execution,
delivery  and  performance  by  the  Borrowers  (and  their   Subsidiaries,   as
applicable)  of the Facility  Documents to which they are a party,  the grant by
the Borrowers (and their Subsidiaries,  as applicable) and the perfection of the
security interests  purported to be granted in favor of the Lender hereunder and
under the Security  Documents,  and the exercise by the Lender of any rights and
remedies  hereunder  or under  the  other  Facility  Documents  have  been  duly
authorized  by all  necessary  corporate  action  and do not and will  not:  (a)
contravene  any provision of its (or their)  charter or by laws; (b) violate any
provision of, or require any filing,  registration,  consent or approval  under,
any  law,  rule,  regulation,   order,  writ,  judgment,   injunction,   decree,
determination or award presently in effect having applicability to the Borrowers
or any of their  Subsidiaries  or  affiliates  (other  than entry of the Interim
Order or the Final Order,  as the case may be, and as otherwise  provided  under
Section  10.3  hereof);  (c)  result in a breach of or  constitute  a default or
require any consent under any indenture or loan or credit agreement or any other
agreement,  lease or  instrument  to which the Borrowers are a party or by which
they or their  properties  may be bound or  affected  except as  provided by the







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                                                            Page 42 of 108 Pages




Bankruptcy Code and the Interim Order or Final Order; (d) result in, or require,
the creation or  imposition  of any Lien (other than as provided  hereunder  and
under the Security Documents), upon or with respect to any of the properties now
owned  or  hereafter  acquired  by  the  Borrowers  except  as  provided  by the
Bankruptcy  Code and the  Interim  Order or the  Final  Order;  or (e) cause the
Borrowers (or any Subsidiary or affiliate, as the case may be, of the Borrowers)
to be in default under any such law, rule,  regulation,  order, writ,  judgment,
injunction,  decree,  determination  or award or any such indenture,  agreement,
lease or instrument  except as provided by the  Bankruptcy  Code and the Interim
Order and Final Order.

          7.3 Legally Enforceable Agreements. Each Facility Document is, or when
delivered under this Agreement will be, a legal, valid and binding obligation of
the Borrowers  (and is  Subsidiaries,  as  applicable)  enforceable  against the
Borrowers, and such Subsidiaries, in accordance with its terms.

          7.4  Litigation.  Other than the  Chapter 11 Cases and as set forth in
Schedule VII hereto,  there are no actions,  suits or proceedings pending or, to
the knowledge of the Borrowers,  threatened,  against or affecting the Borrowers
or any of their  Subsidiaries or any of their respective  properties  before any
court,  governmental agency or arbitrator,  which may, in any one case or in the
aggregate,  materially  adversely  affect the financial  condition,  operations,
properties or business of the Borrowers or any such Subsidiary or the ability of
the Borrowers to perform their obligations under the Facility Documents.

          7.5 True and Complete Disclosure. No financial statement, information,
exhibit or report  furnished by the Borrowers to the Lender in  connection  with
this Agreement,  including the audited financial statements of the Borrowers for
the fiscal year ended December 31, 1997, contained any material  misstatement of
fact or  omitted  to state a  material  fact or any fact  necessary  to make the
statements contained therein not materially misleading.  All written information
furnished  heretofore  or hereafter by the Borrowers to the Lender in connection
with  this  Agreement  or the  other  Facility  Documents  and the  transactions
contemplated  hereby and thereby  shall not contain a material  misstatement  of
fact or omit to  state a  material  fact  or any  fact  necessary  to make  such
information not materially  misleading,  shall or will be prepared in accordance
with GAAP and do or will present fairly the financial  condition of the entities
covered thereby and the results of operations ended thereby,  or (in the case of
projections or pro forma financial  information) based on reasonable  estimates,
on the date as of which  such  information  is  stated or  certified.  Since the
Petition  Date,  there has been no  material  adverse  change  in the  condition
(financial or otherwise),  business, operations or prospects of the Borrowers or
any of their Subsidiaries, except as disclosed in writing to the Lender prior to
the date  hereof,  other than as caused by the  commencement  of the  Chapter 11
Cases.







<PAGE>

                                                            Page 43 of 108 Pages





          7.6  Ownership and Liens.  Each of the Borrowers and its  Subsidiaries
has title to, or valid leasehold interests in, all of its properties and assets,
real and personal,  including  the  properties,  assets and leasehold  interests
reflected in the financial  statements  referred to in Section 7.5 hereof (other
than any properties or assets  disposed of in the ordinary  course of business),
and none of the  properties  and  assets  owned by the  Borrowers  or any of its
Subsidiaries and none of its leasehold  interests is subject to any Lien, except
as permitted under Section 9.2 hereof.

          7.7 Taxes.  Each of the Borrowers and its  Subsidiaries  has filed all
tax  returns  (federal,  state and local)  required to be filed and has paid all
taxes,  assessments  and  governmental  charges  and  levies  thereon to be due,
including interest and penalties, except as prohibited by the Bankruptcy Code.

          7.8 ERISA.  Neither the Borrowers nor any ERISA Affiliate maintains or
has an obligation to contribute to any Plan or any Multiemployer  Plan.  Neither
of the Borrowers nor any ERISA  Affiliate nor any fiduciary of any Plan which is
not a Multiemployer Plan (i) has engaged in a nonexempt  prohibited  transaction
described  in  section  406 of ERISA  or 4975 of the  Code or (ii) has  taken or
failed to take any action  which  would  constitute  or result in a  Termination
Event which in each case would have a material  adverse  effect on the condition
(financial or otherwise),  business,  operation or prospects of the Borrowers or
any of their Subsidiaries.  Neither of the Borrowers nor any ERISA Affiliate has
engaged in a transaction within the meaning of Section 4069 of ERISA which would
have a  material  adverse  effect on the  condition  (financial  or  otherwise),
business,  operation or prospects of the Borrowers or any of their Subsidiaries.
Neither of the Borrowers  nor any ERISA  Affiliate has incurred any liability to
the PBGC which  remains  outstanding  other than the payments of  premiums,  and
there are no premium payments which have become due which are unpaid. Neither of
the Borrowers nor any ERISA Affiliate has made a complete or partial  withdrawal
under  Section  4203 or 4205 of ERISA from a  Multiemployer  Plan in either case
which  would have a  material  adverse  effect on the  condition  (financial  or
otherwise),  business,  operation or prospects of the  Borrowers or any of their
Subsidiaries.  There are no pending, or to the knowledge of the Borrowers or any
ERISA Affiliate, threatened claims, actions, proceedings or lawsuits (other than
claims for benefits in the normal course) asserted or instituted against (i) any
Plan or its assets,  (ii) any  fiduciary  with respect to any Plan, or (iii) the
Borrowers or any ERISA Affiliate with respect to any Plan.

          7.9  Subsidiaries.  Schedule  I  hereto  is  a  complete  and  correct
description  of the name,  jurisdiction  of  incorporation  and ownership of the
outstanding  capital  stock of each  Subsidiary of the Borrowers or any of their
Subsidiaries  and any Investments of the Borrowers or any of their  Subsidiaries
in  existence  on the date  hereof.  All shares of such stock or other equity or
ownership interests owned by the Borrowers or one or more of their Subsidiaries,
as indicated in such  Schedule,  are,  except as indicated on the  attachment to
such Schedule,  owned free and clear of all Liens,  security interests and other
charges and encumbrances.






<PAGE>

                                                            Page 44 of 108 Pages





          7.10 Credit  Arrangements.  Schedule II hereto contains a complete and
correct list of all material credit agreements, indentures, purchase agreements,
guaranties,  Capital Lease  Obligations  and other  investments,  agreements and
arrangements  providing  for or  relating  to  extensions  of credit  (including
agreements  and  arrangements  for the  issuance  of  letters  of  credit or for
acceptance  financing)  in  respect  of  which  the  Borrowers  or any of  their
Subsidiaries  is in any  manner  directly  or  contingently  obligated;  and the
maximum  principal  or face  amounts of the credit in  question,  and the amount
outstanding  thereunder,  are correctly  stated as at the Petition Date, and all
Liens of any  nature  given or  agreed  to be given  as  security  therefor  are
correctly described or indicated in such Schedule.

          7.11  Licenses and Permits.  Except as disclosed in Schedule  III, the
Borrowers and each of their  Subsidiaries  have obtained all material  licenses,
permits,  authorizations or other forms of permission which under federal, state
and local laws are necessary or advisable to operate its businesses  (including,
without limitation,  copyrights, trademarks, patents, the SMR Licenses and other
licenses  to use  tangible or  intangible  property  and similar  rights) in the
manner  contemplated  by the Borrowers or such Subsidiary as of the date of this
Agreement, and neither the Borrowers nor any of its Subsidiaries is in violation
of any valid rights of others with respect to any of the  foregoing,  other than
as of a result of the Chapter 11 Cases.

          7.12 No  Default  on  Outstanding  Judgments  or  Orders.  Each of the
Borrowers has  satisfied all judgments  against it and neither the Borrowers nor
any of their  Subsidiaries  is in default  with respect to any  judgment,  writ,
injunction,  decree,  rule or  regulation  of any court,  arbitrator or federal,
state,  municipal or other governmental  authority,  commission,  board, bureau,
agency or instrumentality, domestic or foreign, other than as of a result of the
Chapter 11 Cases.

          7.13 Labor  Disputes  and Acts of God.  Neither the  business  nor the
properties of the Borrowers or of any of their  Subsidiaries  have been affected
by any fire, explosion, accident, strike, lockout or other labor dispute, storm,
earthquake,  embargo,  act of  God or of the  public  enemy  or  other  casualty
(whether  or not covered by  insurance),  which has had or could have a material
adverse affect on the business, properties or operations of the Borrowers or any
such Subsidiary.

          7.14  Insurance.  The Borrowers  maintain with  financially  sound and
reputable  insurers adequate insurance with respect to its property and business
and  those of its  Subsidiaries.  Schedule  IV hereto  sets  forth a list of all
insurance currently maintained by the Borrowers and its Subsidiaries.

          7.15 Governmental  Regulation.  Neither the Borrowers nor any of their
Subsidiaries  is subject to regulation  under the Public Utility Holding Company
Act of 1935,  the  Investment  Company Act of 1940, the Federal Power Act or any
statute or  regulation  limiting  its  ability to incur  indebtedness  for money
borrowed as contemplated hereby.






<PAGE>

                                                            Page 45 of 108 Pages





          7.16 Administrative Priority; Lien Priority.

               (a) The  Obligations  of the Borrowers  will  constitute  allowed
administrative  expenses in the Chapter 11 Cases having  priority over all other
administrative expenses and unsecured claims against the Borrowers, now existing
or  hereafter  arising,  of any kind or  nature  whatsoever,  including  without
limitation  all other  administrative  expenses,  charges  or claims of the kind
specified in sections 503(b),  506(c), 507(b) and 723(b) of the Bankruptcy Code,
subject, as to priority, only to Carve-Out Expenses.

               (b) The  Obligations  of the Borrowers will be secured by a valid
and  perfected  first Lien on and  security  interest in all of the  Collateral,
subject only to the Permitted  Liens to which such Liens and security  interests
shall be junior and subordinate, and subject further to the Carve-Out Expenses.

          7.17 Bankruptcy  Court Orders.  Each of the Interim Order or the Final
Order and any other order approving the Fiduciary Out, as the case may be, is in
full force and effect, and has not been reversed, stayed, modified or amended.


                                    ARTICLE 8

                              AFFIRMATIVE COVENANTS

          So long as any Note shall remain unpaid, each of the Borrowers and any
Subsidiary granting Lender a Lien on Collateral shall:

          8.1 Maintenance of Existence.  Except for the Subsidiaries  identified
on Schedule III and Schedule V,  preserve  and  maintain,  and cause each of its
Subsidiaries to preserve and maintain, its corporate existence and good standing
in the jurisdiction of its organization,  and qualify and remain qualified,  and
cause each of its  Subsidiaries  to qualify and remain  qualified,  as a foreign
corporation in each jurisdiction in which such qualification is required.

          8.2 Conduct of Business. (a) Except for the Subsidiaries identified on
Schedule V, continue,  and cause each of its Subsidiaries to continue, to engage
in an efficient and economical  manner in a business of the same general type as
conducted  by it on the date of this  Agreement,  (b)  except  as  disclosed  on
Schedule III, obtain, and cause each of its Subsidiaries to obtain, from time to
time all licenses,  permits,  authorizations  or other forms of permission which
under federal, state and local laws are necessary or advisable for operating and
maintaining the conduct of the business of the Borrowers and their  Subsidiaries
(including, without limitation,  copyrights, trademarks, patents and licenses to
use tangible or  intangible  property and similar  rights,  and (c) use its best







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                                                            Page 46 of 108 Pages




efforts,  and cause each of its  Subsidiaries  to use its best efforts,  in each
case  consistent  with the  Budget  to  preserve  and  protect  the value of the
Collateral.

          8.3  Maintenance  of Properties  and  Executory  Contracts and Leases.
Except  for the  Subsidiaries  identified  on  Schedule  V,  maintain,  keep and
preserve, and cause each of its Subsidiaries to maintain, keep and preserve, all
of its properties (tangible and intangible) including leased property, necessary
or useful in the  proper  conduct  of its  business  in good  working  order and
condition,  ordinary wear and tear  excepted,  and shall use its best efforts to
ensure  that all  leases  and  executory  contracts  necessary  or useful in the
Borrowers' or any of such  Subsidiaries'  business or operations  remain in full
force and effect (without,  however, the assumption thereof under section 365 of
the Bankruptcy Code), except to the extent otherwise consented to by the Lender.

          8.4 Maintenance of Records.  Keep, and cause each of its  Subsidiaries
to keep,  adequate records and books of account,  in which complete entries will
be made in accordance  with GAAP,  reflecting all financial  transactions of the
Borrowers and its Subsidiaries.

          8.5  Maintenance  of  Insurance.  Maintain,  and  cause  each  of  its
Subsidiaries to maintain,  insurance  including  insurance against bodily injury
and property  damage with respect to the Collateral with  financially  sound and
reputable  insurance companies or associations in such amounts and covering such
risks as are  usually  carried  by  companies  engaged  in the same or a similar
business and similarly  situated,  which  insurance  may provide for  reasonable
deductibility  from  coverage  thereof.  As soon as  practicable  following  the
Effective Date and from time to time  thereafter,  the Borrowers shall cause the
Lender to be named as loss  payee as its  interests  may  appear  under any such
insurance policies respecting the Collateral in effect from time to time.

          8.6 Compliance with Laws.  Comply,  and cause each of its Subsidiaries
to comply,  in all respects with all applicable  laws,  rules,  regulations  and
orders, such compliance to include,  without limitation,  paying before the same
become delinquent all taxes,  assessments and governmental  charges imposed upon
it or upon its property,  subject to the  limitations  and  requirements  of the
Bankruptcy Code.

          8.7 Right of Inspection. At any reasonable time and from time to time,
and without undue  disruption to the Borrowers'  business,  permit the Lender or
any agent or  representative  thereof,  to examine and make copies and abstracts
from the  records  and books of  account  of, and visit the  properties  of, the
Borrowers and any of their  Subsidiaries,  and to discuss the affairs,  finances
and  accounts  of the  Borrowers  and any  such  Subsidiary  with  any of  their
respective officers and directors and the Borrowers' independent accountants.







<PAGE>

                                                            Page 47 of 108 Pages





          8.8 Reporting Requirements. Furnish to the Lender:

               (a) (i) as soon as  available  and in any  event  within  60 days
after the end of each  fiscal year of the  Borrowers,  the  following  financial
statements  and (ii) as soon as available  and in any event within 90 days after
the end of each fiscal year of the Borrowers, the following financial statements
accompanied  by an opinion  thereon  acceptable to the Lender by an  independent
accountant of national  standing selected by the Borrowers and acceptable to the
Lender:  a  consolidated  balance sheet of the Borrowers and their  Consolidated
Subsidiaries  as of the  end of  such  fiscal  year  and a  consolidated  income
statement and  statement of cash flow and statement of changes in  stockholders'
equity of the  Borrowers  and their  Consolidated  Subsidiaries  for such fiscal
year, all in reasonable  detail and stating in  comparative  form the respective
consolidated  figures for the corresponding  date and period in the prior fiscal
year and all prepared in accordance with GAAP;

               (b) as soon as available and in any event within 7 days after the
end of each month of each fiscal year of the Borrowers,  a consolidated  balance
sheet of the Borrowers and their Consolidated Subsidiaries as of the end of such
month  and a  consolidated  income  statement  and  statement  of cash  flow and
statement  of  changes  in  stockholders'  equity,  of the  Borrowers  and their
Consolidated  Subsidiaries for the period  commencing at the end of the previous
fiscal year and ending with the end of such month, all in reasonable  detail and
stating  in  comparative  form  the  respective  consolidated  figures  for  the
corresponding  date and period in the  previous  fiscal year and all prepared in
accordance with GAAP and certified by either the chief financial  officer or the
chief accounting officer of the Borrowers (subject to year-end adjustments);

               (c)  on  or  before  June  26,  1998,  financial  and  cash  flow
projections,  in form and substance satisfactory to the Lender, which may be the
Budget,  for the period ending  September 25, 1998, with weekly (provided by the
close of business each Monday)  compliance  updates  showing  actual sources and
uses and line item and backup compliance with the Budget for the prior week;

               (d) promptly upon receipt by Borrowers, but in any event no later
than  24  hours  thereafter,  copies  of all  consultants'  reports,  investment
bankers' reports,  accountants'  management letters,  business plans and similar
documents.  The Borrowers  shall not be obligated to provide  copies of any such
documents,  however,  which  are  subject  to  any  privilege  and  as to  which
disclosure  to the Lender would cause such  privilege  to be waived,  but if the
Borrowers claim that any document is so privileged,  they shall promptly provide
the Lender with a letter  describing the document and stating the basis for such
claim of privilege;

               (e)  copies of all  proposed  pleadings,  motions,  applications,
financial  information and other papers and documents to be filed or received by







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                                                            Page 48 of 108 Pages




the Borrowers in the Chapter 11 Cases  pertaining to the Loans,  the  Disclosure
Statement  or the  Chapter 11 Plan,  with  sufficient  time to permit  review by
Lender;

               (f) promptly upon their becoming  available,  but in any event no
later than 24 hours thereafter,  copies of all (i) reports, financial statements
or other information delivered by the Borrowers to their shareholders  generally
or to the members of any creditors' committee appointed in the Chapter 11 Cases,
(ii) reports,  proxy  statements,  financial  statements  and other  information
generally  distributed  by the  Borrowers to their  creditors  or the  financial
community in general and (iii) audit or other reports submitted to the Borrowers
by  independent  accountants in connection  with any annual,  interim or special
audit of the Borrowers;

               (g)  promptly  upon  becoming  aware of any Event of  Default  or
Default,  notice  thereof,  together  with a  written  statement  of  the  chief
financial officer or the chief accounting officer of the Borrowers setting forth
the details thereof and any action with respect thereto taken or contemplated to
be taken by the Borrowers;

               (h) promptly upon  becoming  aware  thereof,  but in any event no
later than 24 hours after  Borrowers  learn of such  event,  notice of any event
which the  Borrowers  believe in good  faith is  reasonably  likely to have,  or
actually has had, a material  effect on the condition  (financial or otherwise),
business, operation or prospects of the Borrowers or any of their Subsidiaries;

               (i) promptly upon Borrowers  becoming aware of such  proceedings,
notice of all legal  and  arbitral  proceedings,  and of all  proceedings  by or
before any  governmental  or  regulatory  authority or agency,  and any material
development in respect of such legal or other proceedings,  against or affecting
the Borrowers or any of their Subsidiaries; and

               (j) such  other  information  and in such form as the  Lender may
reasonably  request,  such  as ad hoc  intra-week  or  daily  requests  for  the
Borrowers' line item cash position,  cash flow forecasts or current  payables or
balance sheet information from time to time.

          8.9 Further Assurances.  Execute, acknowledge,  deliver, record, file,
register,  perform and do any and all such  further  acts,  deeds,  conveyances,
security agreements,  assignments, estoppel certificates,  financing statements,
assurances and other instruments as the Lender may reasonably  request from time
to time in  order  (a) to  carry  out  more  effectively  the  purposes  of this
Agreement or any other Facility Document,  (b) to subject to valid and perfected
first  priority  liens and security  interests all  Collateral  (subject,  as to
priority,  to the  Permitted  Liens),  (c) to perfect and maintain the validity,
effectiveness  and priority of any of the Facility  Documents  and the Liens and
security  interests  intended to be created  thereby,  and (d) to better assure,
convey, grant, assign, transfer, preserve, protect and confirm unto the Lender






<PAGE>

                                                            Page 49 of 108 Pages





the rights  granted  or now or  hereafter  intended  to be granted to the Lender
under any Facility  Document.  The assurances  contemplated  by this Section 8.9
shall be given  under  applicable  nonbankruptcy  law as well as the  Bankruptcy
Code,  it being  the  intention  of the  parties  that the  Lender  may  request
assurances  under  applicable  nonbankruptcy  law,  and  such  request  shall be
complied with (if otherwise made in good faith by the Lender) whether or not the
Interim Order or the Final Order is in force and whether or not dismissal of the
Chapter 11 Cases or any other action by the Bankruptcy Court is imminent, likely
or threatened.

          8.10 Due Diligence.  Reasonably  facilitate and cooperate with all Due
Diligence, commencing June 26, 1998.

          8.11 Fiduciary  Out. On or before July 10, 1998,  the Borrowers  shall
have filed an application for approval of the Fiduciary Out.

          8.12 Chapter 11 Plan Process. Prepare and file the Chapter 11 Plan and
Disclosure  Statement  on or before July 15,  1998,  schedule the hearing on the
Disclosure  Statement  under  section  1125 of the  Bankruptcy  Code  and on the
Fiduciary  Out to  occur on or  before  August  15,  1998  and  actively  pursue
Bankruptcy Court approval of the Disclosure Statement and the Fiduciary Out, and
actively  pursue and  obtain  confirmation  of the  Chapter 11 Plan on or before
September 22, 1998.


                                    ARTICLE 9

                               NEGATIVE COVENANTS

          So long as any Note shall remain unpaid,  each of the Borrowers  shall
not:

          9.1 Debt. Create,  incur,  assume or suffer to exist, or permit any of
its direct or indirect  wholly-owned  Subsidiaries to create,  incur,  assume or
suffer to exist any Debt,  except (a) Debt of the Borrowers under this Agreement
and the Notes; and (b) Debt of the Borrowers existing as of the Petition Date.

          9.2 Liens. Create,  incur, assume or suffer to exist, or permit any of
its direct or indirect  wholly-owned  Subsidiaries to create,  incur,  assume or
suffer to exist,  any Lien, upon or with respect to any of its  properties,  now
owned or hereafter acquired, except:

               (a) Liens  provided for under the Security  Documents  and as set
forth on Schedule VI hereto;

               (b) Liens for taxes or assessments or other government charges or







<PAGE>

                                                            Page 50 of 108 Pages




levies  if not yet due and  payable  or if due and  payable  if they  are  being
contested in good faith by  appropriate  proceedings  and for which  appropriate
reserves are maintained;

               (c) Liens  imposed  by law,  such as  mechanics',  materialmen's,
landlords',  warehousemen's  and  carriers'  Liens,  and  other  similar  Liens,
securing  obligations  incurred in the ordinary course of business which are not
past due for more than 30 days,  or which are being  contested  in good faith by
appropriate   proceedings   and  for  which   appropriate   reserves  have  been
established, or which are effectively stayed;

               (d) Liens under workmen's  compensation,  unemployment insurance,
social security or similar legislation (other than ERISA);

               (e) Liens,  deposits  or  pledges or liens  granted to secure the
Borrowers'  obligations under letters of credit issued to secure the performance
of bids,  tenders,  contracts  (other than  contracts for the payment of money),
leases  (permitted  under the  terms of this  Agreement),  public  or  statutory
obligations,  surety,  stay,  appeal,  indemnity,  performance  or other similar
bonds, or other similar obligations arising in the ordinary course of business;

               (f) judgment and other similar  Liens arising in connection  with
court  proceedings;  provided  that the execution or other  enforcement  of such
Liens is effectively  stayed and the claims  secured  thereby are being actively
contested in good faith and by appropriate proceedings and for which appropriate
reserves have been established;

               (g)  easements,  rights-of-way,  restrictions  and other  similar
encumbrances  which,  in the  aggregate,  do not  materially  interfere with the
occupation,  use and  enjoyment by the  Borrowers or any such  Subsidiary of the
property or assets  encumbered  thereby in the normal  course of its business or
materially impair the value of the property subject thereto; and

               (h) Non-avoidable Liens in existence on the Petition Date.

          9.3 Bankruptcy Court Orders;  Administrative  Priority; Lien Priority;
Payment of Claims.

               (a) Seek,  consent to or suffer to exist any modification,  stay,
vacation or amendment of the Interim  Order or the Final Order,  as the case may
be, except for modifications and amendments agreed to by the Lender.

               (b)  Seek,  consent  to or  suffer  to exist a  priority  for any
administrative expense or unsecured claim against the Borrowers (now existing or
hereafter arising of any kind or nature whatsoever, including without limitation
any administrative expenses, charges or claims of the kind specified in sections







<PAGE>

                                                            Page 51 of 108 Pages





503(b),  506(c),  507(b) and 723(b) of the Bankruptcy Code) equal or superior to
the  priority  of the  Lender in  respect  of the  Obligations,  except  for the
Carve-Out Expenses.

               (c) Suffer to exist any Lien on the Collateral  having a priority
equal or superior to the Liens and security  interests in favor of the Lender in
respect of the  Obligations,  except for  Permitted  Liens,  and  subject to the
Carve-Out Expenses.

          9.4 Dividends. Declare or pay any dividends,  purchase, redeem, retire
or  otherwise  acquire  for value  any of its  capital  stock  now or  hereafter
outstanding,  or make any  distribution  of assets to its  stockholders  as such
whether in cash,  assets or in  obligations  of the  Borrowers,  or  allocate or
otherwise set apart any sum for the payment of any dividend or distribution  on,
or for the  purchase,  redemption  or  retirement  of any shares of its  capital
stock,  or make any other  distribution  by reduction of capital or otherwise in
respect  of  any  of its  shares  of its  capital  stock  or  permit  any of its
Subsidiaries  to  purchase  or  otherwise  acquire  for value any  shares of its
capital stock or stock of the Borrowers or another such Subsidiary.

          9.5 Mergers,  Etc.  Subject to the Fiduciary Out, merge or consolidate
with, or sell, assign, lease or otherwise dispose of (whether in one transaction
or in a series of transactions)  all or substantially all of its assets (whether
now owned or hereafter acquired) to, any Person, or acquire all or substantially
all of the assets or the business of any Person (or enter into any  agreement to
do any of the  foregoing),  or permit any of its  Subsidiaries  to do so, except
that: (a) any such Subsidiary may merge into or transfer assets to the Borrowers
and (b) any Subsidiary may merge into or consolidate  with or transfer assets to
any other Subsidiary.

          9.6 Sale of Assets. Subject to the Fiduciary Out, convey, sell, lease,
transfer  or  otherwise  dispose  of, or permit  any of its  direct or  indirect
wholly-owned or controlled  Subsidiaries to do the foregoing  (other than to the
Borrowers), in one transaction or a series of transactions,  whether voluntarily
or  involuntarily,  any part of its business or  property,  whether now owned or
hereafter  acquired  except (a) property  disposed of in the ordinary  course of
business and on ordinary  business terms, (b) (so long as no Default or Event of
Default has occurred and is continuing) the Disposition of assets or property no
longer used or useful in the conduct of its business,  (c) property  disposed of
in accordance  with, and as  specifically  contemplated  by, the Budget,  or (d)
pursuant to the PageNet Agreement,  the Industrial Wireless  Agreement,  and the
May Industrial Wireless Agreement.

          9.7  Investments  and  Acquisitions.  Make any  Acquisition or make or
permit to remain  outstanding  any  Investments,  or permit any of its direct or
indirect  wholly-owned  Subsidiaries  to do the foregoing,  other than Permitted
Investments.







<PAGE>

                                                            Page 52 of 108 Pages






          9.8 Other  Payments.  Make any  payment of  principal  or  interest or
otherwise  on account of any Debt or trade  payable  incurred by it prior to the
Petition  Date,  provided  that such  payments  may be made if  contained in the
Budget and, if necessary,  approved by the Bankruptcy  Court,  or as required by
the Bankruptcy Court upon motion by a third party.

          9.9 Fiscal  Year.  Permit  its fiscal  year to end on a day other than
December 31, (or if such day is not a Banking Day,  the next  preceding  Banking
Day) or apply to the Bankruptcy Court for authority to do so.

          9.10 Press Releases.  Without the Lender's prior approval,  (not to be
in unreasonably withheld) issue any press release or similar public announcement
in which the  Lender or any  affiliate  of the  Lender is  mentioned,  except as
required by law or regulation or pursuant to an order of any court, governmental
authority or official.


                                   ARTICLE 10

                                EVENTS OF DEFAULT

          10.1 Events of Default. Any of the following events shall be an "Event
of Default":

               (a) the  Borrowers  shall:  (i) fail to pay the  principal of any
Note as and when due and  payable;  or (ii) fail to pay interest on the Notes or
any fee or other  amount  due  hereunder  as and when due and  payable  and such
failure shall continue unremedied for three Banking Days; or

               (b) any  representation or warranty made or deemed made by any of
the  Borrowers  or a Subsidiary  of Borrowers in this  Agreement or in any other
Facility  Document  to  which  it is a  party  or  which  is  contained  in  any
certificate,  document,  opinion,  financial or other statement furnished at any
time under or in connection with any Facility  Document shall prove to have been
incorrect in any material respect on or as of the date made or deemed made; or

               (c) an order  with  respect  to the  Chapter  11  Cases  shall be
entered  by  the  Bankruptcy  Court,  or  any of the  Borrowers  shall  file  an
application  for an order with respect to the Chapter 11 Cases (i)  appointing a
trustee in any such Chapter 11 Cases or (ii)  appointing an examiner in any such
Chapter 11 Cases with the authority to perform  duties of a trustee  (other than
the  duties  solely of an  examiner)  in  respect  of any of the  estates of the







<PAGE>

                                                            Page 53 of 108 Pages




Borrowers or the operation of the business of the Borrowers; or

               (d) an order  with  respect  to the  Chapter  11  Cases  shall be
entered  by the  Bankruptcy  Court  dismissing  any of the  Chapter  11 Cases or
converting any of the Chapter 11 Cases to a chapter 7 case; or

               (e) an order shall be entered by the Bankruptcy  Court confirming
a Plan of  Reorganization  in the Chapter 11 Cases, or a Plan of  Reorganization
shall be filed  which  does not  contain  a  provision  for  termination  of the
Commitments  and  payment in full in cash of all  Obligations  of the  Borrowers
hereunder and under the other Facility Documents on or before the effective date
of such plan or which is not otherwise  satisfactory in all material respects to
the Lender; or

               (f) an order with respect to any of the Chapter 11 Cases shall be
entered by the Bankruptcy Court without the express prior written consent of the
Lender (i) to revoke,  reverse,  stay,  modify,  supplement or amend the Interim
Order or the Final Order or any of the Facility  Documents,  (ii)  approving the
incurrence by any of the Borrowers of any Debt not contemplated hereunder, (iii)
to permit any  administrative  expense or any claim (now  existing or  hereafter
arising, of any kind or nature whatsoever) to have administrative priority equal
or superior to the priority of the Lender in respect of the Obligations,  except
for  Carve-Out  Expenses,  (iv) to grant or  permit  the  grant of a Lien on the
Collateral  or (v) which  terminates or results in the rejection of any material
lease or executory  contract used or useful in the  operation of the  Borrowers'
business or operations; or

               (g) an order shall be entered by the Bankruptcy Court that is not
stayed pending appeal granting relief from the automatic stay to any creditor of
any of the Borrowers with respect to any claim secured by any asset or assets of
the Borrowers having book value equal to or exceeding $100,000 in the aggregate;
provided,  however,  that it shall not be an Event of Default if relief from the
automatic  stay is lifted  solely for the purpose of allowing  such  creditor to
determine the liquidated amount of its claim against any of the Borrowers; or

               (h) an  application  for any of the orders  described  in clauses
(c),  (d), (e), (f) or (g) above shall be made (i) by a Person other than any of
the  Borrowers  and such  application  is not contested by the Borrowers in good
faith or the relief  requested is granted in an order that is not stayed pending
appeal or (ii) by any of the Borrowers; or

               (i) any  judgment  or order  shall be entered  against any of the
Borrowers or any of their direct or indirect  wholly-owned  Subsidiaries  or any
other event shall occur or  condition  exist which does or could  reasonably  be
expected  to have a  material  adverse  effect on the  condition  (financial  or
otherwise),  business,  operation or prospects of any of the Borrowers or any of
their direct or indirect wholly-owned Subsidiaries,  and there shall be a period
of ten  consecutive  days during which a stay or enforcement of such judgment or
order shall not be in effect; or






<PAGE>

                                                            Page 54 of 108 Pages





               (j)  the  Security  Documents  shall  at  any  time  after  their
execution  and  delivery  and for any  reason  cease:  (A) to create a valid and
perfected  security  interest  and Lien in and to the  property  purported to be
subject thereto having the priority specified in the Security Documents;  or (B)
to be in full  force and  effect  or shall be  declared  null and  void,  or the
validity or  enforceability  thereof shall be contested by any of the Borrowers,
or any of the  Borrowers  shall deny it has any further  liability or obligation
under any such  agreement,  or any of the Borrowers shall fail to perform any of
its obligations thereunder; or

               (k) any material  license,  permit or other  authorization by any
federal,  state or local  government  or any lease  relating  to the  Collateral
which,  in each case,  is  necessary  for the use or  operation  (whether or not
leased  or owned by any of the  Borrowers  or any of their  direct  or  indirect
wholly-owned  Subsidiaries  on the date hereof) in the conduct of the businesses
engaged  in by  any  of  the  Borrowers  or any  of  their  direct  or  indirect
wholly-owned  Subsidiaries  on the date  hereof  shall be revoked or canceled or
otherwise terminated; or

               (l) the later of the date (i) any of the Borrowers shall cease to
have the  exclusive  right to file a Plan of  Reorganization  in the  Chapter 11
Cases; or (ii) a third party shall file a competing Plan of Reorganization; or

               (m) any  Termination  Event  with  respect  to a Plan  shall have
occurred,  and, 5 days after notice  thereof shall have been given to any of the
Borrowers by the Lender,  (i) such Termination Event (if correctable)  shall not
have been corrected and (ii) the then Unfunded  Vested  Liabilities of such Plan
exceed $100,000 (or in the case of a Termination  Event involving the withdrawal
of a  "substantial  employer" (as defined in Section  4001(a)(2) of ERISA),  the
withdrawing  employer's  proportionate  share of such excess  shall  exceed such
amount),  or any of the  Borrowers  or any  member  of the  Controlled  Group as
employer  under a  Multiemployer  Plan  shall  have made a  complete  or partial
withdrawal  from  such   Multiemployer   Plan  and  the  Plan  sponsor  of  such
Multiemployer  Plan shall have  notified  such  withdrawing  employer  that such
employer has incurred a withdrawal liability in an amount exceeding $100,000; or

               (n) any of the  Borrowers  shall:  (i) fail to perform or observe
any other term, covenant or agreement on its part to be performed or observed in
any business Facility Document and such failure shall continue  unremedied for 5
Banking Days after notice thereof;  or (ii) fail to comply with any of the terms
or provisions of the Interim Order or the Final Order.

          10.2 Consequences of an Event of Default. If an Event of Default shall
occur and so long as it shall  continue  or, the  Lender  may,  without  further








<PAGE>

                                                            Page 55 of 108 Pages



application to the Bankruptcy Court, by notice to the Borrowers,

               (a) declare the Commitments terminated, whereupon the Commitments
will terminate  immediately  and any fees hereunder shall be immediately due and
payable  without  further  order  of or  application  to the  Bankruptcy  Court,
presentment,  demand,  protest or further  notice of any kind,  all of which are
hereby expressly waived, and an action therefor shall immediately accrue; or

               (b) declare the unpaid  principal  amount of the Notes,  interest
accrued thereon, and all other amounts owing by the Borrowers hereunder or under
the  Notes  to be  immediately  due and  payable  without  further  order  of or
application to the Bankruptcy  Court,  presentment,  demand,  protest or further
notice of any kind,  all of which are  hereby  expressly  waived,  and an action
therefor shall immediately accrue.

          10.3  Certain  Remedies.  If an Event of Default has  occurred  and is
continuing, the Lender may, on seven Banking Days' prior notice to the Borrowers
and any  official  committee  appointed  in the Chapter 11 Cases,  exercise  all
rights  and  remedies  which the Lender  may have  hereunder  or under any other
Facility  Document,  the Interim Order, the Final Order or at law (including but
not limited to the Bankruptcy Code and the Uniform Commercial Code) or in equity
or otherwise,  without  regard to the automatic stay provided for in section 362
of the  Bankruptcy  Code with respect to the Borrowers or any of its property or
any of the  Collateral.  Within such seven  Banking  Days,  the Borrowers or any
other  party-in-interest  may seek a hearing before the Bankruptcy  Court on the
sole issue of whether an Event of Default has, in fact, occurred, and the Lender
shall refrain from enforcing any of its remedies  hereunder until the Bankruptcy
Court has ruled in respect  thereof or an agreement has otherwise  been reached.
Unless the  Bankruptcy  Court shall order that no Event of Default has occurred,
the  automatic  stay under section 362 of the  Bankruptcy  Code shall be vacated
with respect to the Collateral,  and the Lender shall be free to exercise all of
its rights with respect to the Collateral,  subject to the rights of the holders
of Permitted  Liens,  without  further  approval of the  Bankruptcy  Court.  All
proceeds  in  respect  thereof  shall be  applied  by the  Lender to reduce  the
Obligations  in the Lender's sole  discretion,  and the  Borrowers  shall remain
liable for any  deficiencies.  With respect to any lease or  executory  contract
constituting  part of the  Collateral,  the Lender shall have the right to cause
the  Borrowers  to assume and assign  such lease or  executory  contract  to the
Lender or its designee,  although nothing herein shall be construed to limit the
rights of the  counter-party  to such lease or  executory  contract  to adequate
assurance  and cure  payments  under  section 365 of the  Bankruptcy  Code or to
impose any obligation on the Lender to make any such adequate  assurance or cure
payments.  Any  proceeds  received  by the  Borrowers  in  connection  with  the
assumption and  assignment of any executory  contract or lease shall be proceeds
of  the  Collateral  and  immediately  remitted  to the  Lender  to  reduce  the
Obligations  then  outstanding.  All such remedies  shall be cumulative  and not
exclusive.  No failure on the part of the  Lender to  exercise,  and no delay in
exercising,  any right  hereunder  shall operate as a waiver thereof or preclude







<PAGE>

                                                            Page 56 of 108 Pages




any other or further  exercise  thereof or the exercise of any other right.  The
remedies  herein  provided  are  cumulative  and not  exclusive  of any remedies
provided by law.


                                   ARTICLE 11

                                  MISCELLANEOUS

          11.1  Amendments  and Waivers.  The  Borrowers and the Lender may from
time to time enter into agreements  amending,  modifying or  supplementing  this
Agreement,  the Notes or any other Facility  Documents,  and the Lender may from
time to time grant waivers or consents to a departure  from the due  performance
of the obligations of the Borrowers hereunder or thereunder. Any such agreement,
waiver or consent must be in writing and shall be  effective  only to the extent
specifically  set  forth in such  writing.  In the case of any  such  waiver  or
consent  relating  to any  provision  hereof,  any Event of Default so waived or
consented to shall be deemed to be cured and not continuing,  but no such waiver
or consent  shall extend to any other or  subsequent  Event of Default or impair
any right consequent thereto.

          11.2 Binding Effect. This Agreement shall be binding upon and inure to
the benefit of the Lender,  the Borrowers and their  respective  successors  and
assigns  (including,  except  for the right to  request  Loans,  any  trustee or
examiner or other person with  expanded  powers  succeeding to the rights of the
Borrowers  or  pursuant  to any  conversion  to a case  under  chapter  7 of the
Bankruptcy Code).

          11.3 The Lender as Party in Interest.  The Borrowers  hereby stipulate
and agree that the Lender is and shall remain a party in interest in the Chapter
11 Cases and shall  have the right to  participate,  object  and be heard in any
motion or  proceeding  in  connection  therewith  (including  but not limited to
objections to use of proceeds of the Loans, to the payment of professional  fees
and expenses or the amount thereof,  to sales or other transactions  outside the
ordinary  course of business or to  assumption  or  rejection  of any  executory
contract or lease).

          11.4 Expenses and Indemnities.

               (a) The  Borrowers  shall  reimburse the Lender on demand for all
reasonable costs, expenses, and charges (including, without limitation, fees and
charges  of  external  consultants  to and  legal  counsel  for the  Lender  and
specifically  attributable  internal legal and consultant  expenses) incurred by
the Lender in connection with (i) the negotiation,  preparation,  performance or
enforcement  of this  Agreement,  any term sheet or  commitment  letter  related
thereto, the Notes and the other Facility Documents,  and (ii) the Due Diligence
of  Lender;  provided,  however,  that such  reimbursable  sum shall not  exceed
$250,000 in the aggregate.  The Lender shall provide the Bankruptcy  Court,  the
Borrowers, the United States Trustee and any official committee appointed in the







<PAGE>

                                                            Page 57 of 108 Pages




Chapter 11 Cases with periodic statements (as frequently as monthly) showing the
nature,  amount and any  balance  due in  respect of any such fees and  expenses
incurred by the Lender in accordance herewith.  The balance of any such fees and
expenses shall be paid by the Borrowers  within thirty days after receipt unless
a party in  interest  shall  have  filed a  formal  objection  thereto  with the
Bankruptcy Court within such thirty day period.  Thereafter,  if the parties are
unable to reach  agreement in respect  thereof,  a hearing before the Bankruptcy
Court solely on the issue of the  reasonableness  of such fees and expenses will
be held.

               (b)  The  Borrowers   agree  to  indemnify  the  Lender  and  its
directors, officers, partners, employees, representatives,  attorneys and agents
from, and hold each of them harmless against,  any and all losses,  liabilities,
claims,  damages or expenses incurred by any of them arising out of or by reason
of  any  investigation  or  litigation  or  other  proceedings   (including  any
threatened  investigation  or litigation or other  proceedings)  relating to any
actual or proposed use by the Borrowers or any Subsidiary of the proceeds of the
Loans,  or its role with  respect  to the  Chapter 11 Plan,  including,  without
limitation,  the  reasonable  fees and  disbursements  of  counsel  incurred  in
connection with any such  investigation or litigation or other  proceedings (but
excluding any such losses, liabilities,  claims, damages or expenses incurred by
reason  of the  gross  negligence  or  willful  misconduct  of the  Person to be
indemnified).

               (c) The  obligations  of the  Borrowers  under this  Section 11.4
shall  survive the  repayment  of the  Obligations  and the  termination  of the
Commitments.

          11.5 Assignment;  Participation. This Agreement shall be binding upon,
and shall  inure to the  benefit  of,  the  Borrowers  and the  Lender and their
respective  successors and assigns,  except that the Borrowers may not assign or
transfer its rights or  obligations  hereunder.  The Lender may assign,  or sell
participations  in,  all or any  part  of the  Obligations  (including  all or a
portion  of its  Commitment)  owing to the  Lender  to  another  Lender or other
entity, in which event (a) in the case of an assignment,  upon notice thereof by
the Lender to the  Borrowers,  the  assignee  shall have,  to the extent of such
assignment (unless otherwise provided  therein),  the same rights,  benefits and
obligations  as it would  have if it were the Lender  hereunder;  and (b) in the
case of a participation, the participant shall have no rights under the Facility
Documents.  The  agreement  executed  by the Lender in favor of the  participant
shall not give the  participant  the right to require the Lender to take or omit
to  take  any  action  hereunder  except  action  directly  relating  to (i) the
extension of a payment  date with respect to any portion of the  principal of or
interest on any amount outstanding hereunder allocated to such participant, (ii)
the  reduction  of the  principal  amount  outstanding  hereunder  or (iii)  the
reduction  of the rate of interest  payable on such amount or any amount of fees
payable  hereunder to a rate or amount, as the case may be, below that which the
participant  is entitled to receive  under its  agreement  with the Lender.  The
Lender may furnish any information concerning the Borrowers in the possession of







<PAGE>

                                                            Page 58 of 108 Pages





the  Lender  from  time  to  time  to  assignees  and  participants   (including
prospective assignees and participants);  provided that the Lender shall require
any such prospective assignee or such participant  (prospective or otherwise) to
agree in writing to maintain the confidentiality of such information.

          11.6 Notices.  Unless the party to be notified  otherwise notifies the
other  party in writing as  provided in this  Section,  and except as  otherwise
provided  in this  Agreement,  notices  shall be given to the  Lender and to the
Borrowers  by  telecopier  or  by  overnight  courier  or by  personal  delivery
addressed to such party at its address on the signature page of this Agreement.

          11.7  Table of  Contents;  Headings.  Any  table of  contents  and the
headings and captions  hereunder are for  convenience  only and shall not affect
the interpretation or construction of this Agreement.

          11.8 Severability. The provisions of this Agreement are intended to be
severable.  If for any  reason any  provision  of this  Agreement  shall be held
invalid or unenforceable in whole or in part in any jurisdiction, such provision
shall, as to such jurisdiction,  be ineffective to the extent of such invalidity
or   unenforceability   without  in  any  manner   affecting   the  validity  or
enforceability  thereof in any other  jurisdiction  or the remaining  provisions
hereof in any jurisdiction.

          11.9  Counterparts.  This  Agreement  may be executed in any number of
counterparts,  all of which taken  together  shall  constitute  one and the same
instrument,  and any party hereto may execute this Agreement by signing any such
counterpart.

          11.10  Integration.  The  Facility  Documents  set  forth  the  entire
agreement  between the parties hereto relating to the transactions  contemplated
thereby and  supersede any prior oral or written  statements or agreements  with
respect to such transactions.

          11.11  Governing  Law.  This  Agreement  shall  be  governed  by,  and
interpreted and construed in accordance  with, the internal laws of the State of
New York applicable to contracts made and performed entirely within the State of
New York, except to the extent governed by the Bankruptcy Code.

          11.12  Waiver of Jury Trial.  BY ITS  EXECUTION  AND  DELIVERY OF THIS
AGREEMENT THE BORROWERS HEREBY KNOWINGLY,  VOLUNTARILY AND INTENTIONALLY,  WAIVE
ANY RIGHTS THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION AGAINST
THE LENDER,  ANY  PARTICIPANT,  ASSIGNEE OR INDEMNIFIED  PARTY,  BASED HEREON OR
ARISING OUT OF, UNDER OR IN  CONNECTION  WITH THIS  AGREEMENT,  THE NOTES OR ANY
OTHER FACILITY DOCUMENT, ANY OF THE TRANSACTIONS  CONTEMPLATED HEREBY OR THEREBY







<PAGE>

                                                            Page 59 of 108 Pages




OR ANY COURSE OF  CONDUCT,  COURSE OF  DEALING,  STATEMENTS  (WHETHER  VERBAL OR
WRITTEN) OR ACTIONS OF THE LENDER OR THE  BORROWERS  IN  CONNECTION  HEREWITH OR
THEREWITH.  THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE LENDER TO ENTER INTO
THIS AGREEMENT.






<PAGE>

                                                            Page 60 of 108 Pages






          IN WITNESS  WHEREOF,  the parties hereto have caused this Agreement to
be duly executed as of the day and year first above written.


                                             GEOTEK COMMUNICATIONS, INC.

                                             By   /s/ Anne E. Eisele
                                                  -----------------------------
                                                  Title: CFO

                                             Address for Notices:

                                             Geotek  Communications,   Inc.  
                                             102 Chestnut Ridge Road  
                                             Montvale,  New Jersey   07645   
                                             Telephone:   (201)930-9305    
                                             Telecopy No.:(201)930-1363 
                                             Attn: General Counsel


                                             GEOTEK USA, INC.

                                             By   /s/ Anne E. Eisele
                                                  -----------------------------
                                                  Title: CFO

                                             Address for Notices:

                                             Geotek USA, Inc.
                                             102 Chestnut Ridge Road
                                             Montvale, New Jersey  07645
                                             Telephone: (201) 930-9305
                                             Telecopy No.:   (201) 930-1363
                                             Attn: General Counsel

                                             With a copy to:

                                             Kaye, Scholer, Fierman, Hays
                                               & Handler, LLP
                                             425 Park Avenue
                                             New York, New York  10022
                                             Attn: Andrew Kress, Esq.
                                             Telephone: (212) 836-8000
                                             Telecopy No.:  (212) 836-6157






<PAGE>

                                                            Page 61 of 108 Pages






                                             S-C RIG INVESTMENTS III, L.P., by
                                             S-C Rig Co., its general partner


                                             By   /s/ Peter Hurwitz
                                                  -----------------------------
                                                  Title: Vice President

                                             Address for Notices:

                                             S-C Rig Investments III, L.P.
                                             888 Seventh Avenue
                                             Suite 3000
                                             New York, New York 10106
                                             Attn: Peter Hurwitz, Esq.
                                             Telephone: (212) 397-5553
                                             Telecopy No.:  (212) 489-2005

                                             With a copy to:

                                             Soros Fund Management LLC
                                             888 Seventh Avenue
                                             Suite 3300
                                             New York, New York 10106
                                             Attn: Michael Neus
                                             Telephone: (212) 397-5540
                                             Telecopy No.:  (212) 664-0544

                                                          -and-

                                             Paul, Weiss, Rifkind, Wharton
                                              & Garrison
                                             1285 Avenue of the Americas
                                             New York, New York 10019
                                             Attn: Robert Drain, Esq.
                                             Telephone: (212) 373-3000
                                             Telecopy No.:  (212) 757-3990




<PAGE>

                                                            Page 62 of 108 Pages


                                                                     EXHIBIT E 



                                                                  CONFORMED COPY



                             Summary Term Sheet for
                    Debtor in Possession Financing Agreement
                           and Plan of Reorganization


The following is a summary of terms, subject to the negotiation and execution of
definitive  documentation  and the other conditions set forth herein,  for a $10
million debtor in possession financing facility and a related chapter 11 plan of
reorganization for the Debtors (defined below),  proposed by S-C Rig Investments
III,  L.P.  and the Debtors.  It is for  discussion  purposes  only and does not
constitute a commitment to lend or otherwise  alter any  agreements or rights of
S-C Rig  Investments  III, L.P. or any of its affiliates  with or against Geotek
Communications,  Inc.,  Geotek USA,  Inc. or any other person or entity,  all of
which rights and agreements are expressly reserved.


Borrower:           Geotek Communications,  Inc. ("Geotek") and Geotek USA, Inc.
                    (together, the "Debtors")

Lender:             S-C  Rig  Investments  III,  L.P.  and/or  an  affiliate  or
                    assignee thereof (the "Lender" or "S-C Rig III")

DIP Facility:       Working  capital   facility  to  provide   requirements  for
                    Debtors'   continued   operations  (as  provided  in  Budget
                    (defined  below)  and  certified  to  Lender,  in advance of
                    making loans, by a responsible officer of Geotek),  with the
                    goal of funding such operations  through the confirmation of
                    the Chapter 11 Plan, defined below ("DIP Facility")






<PAGE>

                                                            Page 63 of 108 Pages




Amount of DIP       Up to $10,000,000  available as follows:  $7,000,000 initial
Facility:           availability to be made on or before June 29, 1998 ("Initial
                    DIP Facility"),  provided Debtors shall have filed this Term
                    Sheet with the  Bankruptcy  Court and be  actively  pursuing
                    confirmation of the Chapter 11 Plan (defined below),  and up
                    to  $3,000,000  to be  made on or  after  August  10,  1998,
                    provided  Debtors  shall have filed the  Chapter 11 Plan and
                    related disclosure statement, the hearing on such disclosure
                    statement is scheduled  for on or before August 15, 1998 and
                    the Debtors are actively  pursuing approval of the Fiduciary
                    Out, as defined below, and confirmation of the Plan, subject
                    in each case to such  conditions  precedent  to advances and
                    subsequent   advances  as  are  customarily   found  in  DIP
                    facilities,  including  absence  of an event of  default  or
                    termination event, including as described herein.  

Interest:           12 percent per annum; after an event of default,  14 percent
                    per annum.  Interest  shall be payable  monthly in  arrears,
                    based on a 360 day year.

Fees:               Facility  fee  of  $150,000,  plus  reimbursement  of all of
                    Lender's expenses (including,  without limitation,  expenses
                    of  counsel  and other  consultants  retained  by Lender and
                    allocable  portion of in-house  personnel)  attributable  to
                    negotiation, documentation and monitoring and enforcement of
                    DIP  Facility,  to be paid  from DIP  Facility  proceeds  or
                    otherwise as provided herein.

Maturity:           Borrowings  under the DIP  Facility are to be repaid in full
                    on the date which is the earlier of (a)  October  15,  1998,
                    (b)  the  occurrence  of an  event  of  default,  or (c) the
                    effective date of a chapter 11 plan for the Debtors.







<PAGE>

                                                            Page 64 of 108 Pages







Collateral and      All amounts  outstanding  under DIP Facility,  including all
Superpriority       fees in  respect  thereof,  shall be  secured  by first lien
Claim:              (subject   to  the  Carve   Out,   defined   below)  on  all
                    unencumbered  assets of the Debtors  and their  wholly-owned
                    direct and indirect subsidiaries under section 364(d) of the
                    Bankruptcy Code (without limitation,  excluding any licenses
                    owned by or stock of  Geotek  U.S.  Networks,  Inc.,  Geotek
                    License Holdings, Inc. and MacDermott Communications, Inc.),
                    including  assignable  rights in respect of 68 SMR  licenses
                    (and  stock in  subsidiary(ies)  holding  licenses),  rights
                    under SMR Frequency  Exchange  Agreement with Paging Network
                    of America, Inc. ("PageNet  Agreement"),  rights under April
                    3,  1998  Purchase   Agreement  with   Industrial   Wireless
                    Technologies,  Inc.,  interests in Anam  Telecommunications,
                    Geotek Argentina,  S.A., and, to the extent grantable, GMSI,
                    Inc., inventory and equipment of the Debtors'  subsidiaries,
                    and proceeds of each of the foregoing. Upon either (a) event
                    of  default  or (b)  termination  of the DIP  Facility,  the
                    automatic stay shall be lifted without further action on the
                    part of Lender  (other than seven days' prior  notice to the
                    Debtors  and any  official  committee)  to permit  Lender to
                    foreclose  on or  take  other  action  with  respect  to the
                    collateral;  provided  that  the  Debtors  and any  official
                    committee  shall  have such seven days to attempt to prevent
                    such  lifting of the  automatic  stay on the sole basis that
                    such event of default or termination event has not occurred.
                    All  liens  shall be  automatically  perfected  pursuant  to
                    bankruptcy court order; however, the automatic stay shall be
                    modified to permit other perfection at Lender's  option.  

                    In  addition,  Lender  shall have an  allowed  superpriority
                    claim for such amounts under  sections  364(c)(1) and 503(b)
                    of the  Bankruptcy  Code over expenses of the kind specified
                    in  sections  503(b),  506(c),  507(b)  and  726(b)  of  the
                    Bankruptcy  Code,  other  than with  respect to fees of U.S.
                    trustee and bankruptcy court-approved professional fees, not
                    to exceed $500,000 ("Carve Out").







<PAGE>

                                                            Page 65 of 108 Pages






Conditions of DIP   Entry by Lender and  Debtors on or before June 29, 1998 into
Facility Including  definitive documentation in form and  substance satisfactory
Interim DIP         to Lender and its counsel ("Definitive  DIP Documentation"),
Facility:           including a form of budget (the  "Budget") acceptable to the
                    Lender for  Debtors'  operations  during the term of the DIP
                    Facility.  The  Definitive DIP  Documentation  shall contain
                    such   conditions,   representations   and   warranties  and
                    covenants as are  customarily  found in DIP  facilities  and
                    additional  provisions  appropriate in Lender's judgment for
                    this transaction, including:

                    1.   Satisfactory     completion     (in    Lender's    sole
                         determination) on or before June 29, 1998 of financial,
                         business,   operational  and  legal  due  diligence  in
                         Debtors with respect to DIP Facility),  including as to
                         collateral.

                    2.   Entry on or  before  June  29,  1998 of an order of the
                         bankruptcy   court   ("Interim   Order")  in  form  and
                         substance  satisfactory  to  Lender  and  its  counsel,
                         including a finding  that  Interim  DIP  Facility is in
                         good faith and otherwise  complies with section  364(e)
                         of the Bankruptcy Code, authorizing and approving:  

                         (a)  Interim DIP Facility

                         (b)  Reimbursement   of  all  of   Lender's   fees  and
                              expenses,   as  described   above.   

                         (c)  Debtors'  agreement to provide  Lender with notice
                              of any  event  or  occurrence  having  a  material
                              effect on the  business,  conditions or prospects,
                              financial or otherwise,  of the Debtors' business,
                              as  promptly  as  practicable,  but in  any  event
                              within 24 hours of the  Debtors'  receipt  of such
                              information  

                         (d)  The date of the final hearing on the DIP Facility






<PAGE>

                                                            Page 66 of 108 Pages







                         3.   Entry on or before July 13,  1998,  of an order of
                              the bankruptcy  court ("Final  Order") in form and
                              substance  satisfactory to Lender and its counsel,
                              including  (a) a finding  that DIP  Facility is in
                              good faith and  otherwise  complies  with  section
                              364(e) of the  Bankruptcy  Code,  authorizing  and
                              approving the DIP  Facility.  

                         4.   On or before  June 29,  1998,  Geotek  shall  have
                              retained  a  crisis  manager,   restructuring  and
                              reorganization   financial  advisor  and/or  other
                              consultants  to  the  Debtors,  from  alternatives
                              agreed upon by the Lender and Geotek,  to perform,
                              among   other   duties,   all   postpetition   CEO
                              functions,  adherence to Budget,  consolidation of
                              operations, facilitation of Lender's due diligence
                              for  Chapter  11  Plan,   described  herein,   and
                              preparation     of    revised     Business    Plan
                              (collectively,   "Crisis  Manager").  The  parties
                              agree  upon  Zolfo  Cooper  Management,  LLC  (per
                              Leonard  LoBiondo  and Steven  Marotta),  assisted
                              with respect to  development  of the Business Plan
                              by Renaissance Worldwide, Inc., as Crisis Manager.

                         5.   Commencing  on or  before  June 26,  1998,  Debtor
                              shall  facilitate  and cooperate  with  financial,
                              business,  operational  and legal due diligence by
                              Lender and its advisors in the Debtors. 

                         6.   Debtors shall provide  Lender and its counsel with
                              copies of all proposed pleadings and orders in the
                              bankruptcy  case(s) pertaining to the DIP Facility
                              and/or the Chapter 11 Plan,  with  sufficient time
                              to  permit  review  and  comment  by  Lender.  The
                              Debtors shall not issue any press release in which
                              Lender  or any  affiliate  or agent of  Lender  is
                              mentioned   without   Lender's  prior  review  and
                              approval.





<PAGE>

                                                            Page 67 of 108 Pages






Events of Default/  Such  events  of  default  as are  customarily  found in DIP
Termination Events: facilities  and others  appropriate  in  Lender's  judgment,
                    including:

                    7.   Non-payment when due of amounts due under DIP Facility.

                    8.   Material breach of any covenant contained in Definitive
                         DIP Documentation, including material breach of Budget.

                    9.   Dismissal of bankruptcy case, any conversion to chapter
                         7,  appointment of a bankruptcy  trustee or an examiner
                         or  other  person  with   expanded   powers  (with  the
                         exception of the Crisis  Manager),  termination  of the
                         Debtors'   exclusive   right   to   file  a   plan   or
                         reorganization, or the incurrence of other indebtedness
                         under section 364 of the Bankruptcy  Code. 

                    10.  Any stay or  modification  of the Interim  Order or the
                         Final Order.

                    11.  Debtors'  failure  to  prepare  a  chapter  11  plan in
                         substantial  conformity  with Chapter 11 Plan described
                         below (preferably with key creditors'  agreement) or to
                         file such plan and related  disclosure  statement on or
                         before July 15, 1998.

                    12.  Failure  to  schedule   hearing  on  bankruptcy   court
                         approval of disclosure statement for Chapter 11 Plan on
                         or before August 15, 1998.

                    13.  Chapter 11 Plan not confirmed by September 22, 1998.

                    14.  The  filing  of a  chapter  11  plan  or a  motion  for
                         approval of an agreement  that does not provide for the
                         payment of the DIP Facility or that is otherwise not in
                         substantial  conformity with Chapter 11 Plan. 

Governing Law:      Internal law of the State of New York







<PAGE>

                                                            Page 68 of 108 Pages






Chapter 11 Plan     To be  proposed  by Geotek and S-C Rig III for  Geotek,  and
("Chapter 11 Plan") subsidiaries to the extent the addition of such subsidiaries
                    is mutually  agreed to by S-C Rig III and Geotek  (together,
                    the "Debtors").1/

Classes and         Administrative   Expenses   (including   DIP  Facility)  and
Proposed            Priority  Claims:  Payment in full in cash on effective date
Treatment           or as otherwise permitted by Bankruptcy Code. 

                    Senior Secured Bonds:  ($150 million plus accrued interest):
                    New Senior Secured Notes,  due January 1, 2007.  Interest at
                    12%,  PIK  to  January  1,  2003;  thereafter  current  pay.
                    Collateral:  current collateral plus currently  unencumbered
                    SMR licenses not subject to PageNet  Agreement and exclusive
                    of cash receivable under PageNet Agreement (provided further
                    that  Reorganized  Geotek  may  use  up to  $26  million  of
                    restricted cash collateral for working capital purposes). In
                    addition,  holders of New Senior Secured Notes shall receive
                    1% of the  New  Common  Stock  of  Reorganized  Geotek.  

                    HNS  Obligations:  ($24.6  million plus accrued  interest on
                    Convertible  Secured Note and $15.4 million line of credit):
                    New $24.6 million  Secured Note, due January 1, 2007. Use of
                    $11  million of prior  Advances  under PSU  Agreement  to be
                    discussed.   Interest  at  12%,  PIK  to  January  1,  2003;
                    thereafter, current pay. Collateral: current collateral. Any
                    remaining  obligations  under $15.4  million line of credit:
                    New Secured Note, due January 1, 2008. Interest,  13% PIK to
                    January 1, 2004; thereafter current pay. Collateral: current
                    collateral,  subject  to  adjustment  upon  release  of  $26
                    million   restricted   New  Senior   Secured   Notes'   cash
                    collateral.

- --------

1/        Rather  than   reorganize   certain   subsidiaries,   assets  of  such
          subsidiaries  in S-C Rig III's  discretion  that are  necessary to the
          continued operation of the Debtors' business as a going concern may be
          purchased by Reorganized Geotek.





<PAGE>

                                                            Page 69 of 108 Pages






                    S-C Rig III ($40 million):  New Senior Notes, due January 1,
                    2008.  Interest,  13% PIK to January  1,  2004;  thereafter,
                    current pay.  Negative  pledge on all assets;  first lien on
                    unencumbered  former DIP Facility  collateral  and "passive"
                    second lien on New Senior Secured Notes collateral. 

                    Raphael:  Reorganized Geotek to assume Technology Agreements
                    with such modifications as are reasonably  acceptable to S-C
                    Rig III. In addition,  Raphael shall receive 3.3% of the New
                    Common Stock of Reorganized Geotek.


                    Other   Non-subordinated   Geotek  Unsecured  Claims:   ($20
                    million):

                    Senior Subordinated Convertible Notes and Other Subordinated
                    Claims ($75 million):

                    All Other Unsecured  Claims  (Non-Geotek  Obligations)  ($54
                    million):

                    In the case of each of the foregoing, a package of New Notes
                    and Reorganized Geotek Common Stock,  reasonably  reflecting
                    the rights of each class, to be discussed.

                    Preferred Stock: 4.5% of the New Common Stock of Reorganized
                    Geotek, as follows:

                              Series H: 2.4%
                              All Junior Series: 2.1%

                    Geotek  Common  Stock:  0.5%  of the  New  Common  Stock  of
                    Reorganized Geotek.

Non-consensual      The Chapter 11 Plan proponents also reserve the
Confirmation:       right to modify the  Chapter 11 Plan to permit  confirmation
                    under section 1129(b) of the Bankruptcy Code.







<PAGE>

                                                            Page 70 of 108 Pages






Rights Offering:    S-C Rig III or an affiliate  shall  underwrite a $20 million
                    rights  offering,  effective  upon  the  Chapter  11  Plan's
                    effective   date,  for  80%  of  the  New  Common  Stock  of
                    Reorganized  Geotek.2/ S-C Rig III - or such affiliate shall
                    have the right to  purchase up to $10 million of such shares
                    on the same terms and  conditions as the other  participants
                    in the  rights  offering.  Eligible  participants  in rights
                    offering  (on  pro  rata  basis  of  amount  subscribed,  if
                    offering  is  oversubscribed)  shall  be all  creditors  and
                    shareholders  of Geotek as of Chapter 11 Plan  record  date.
                    S-C  Rig III or such  affiliate  shall  have  the  right  to
                    nominate a majority of the board of directors of Reorganized
                    Geotek  until the earlier of the date that it owns less than
                    40% of the New Common Stock and the third anniversary of the
                    completion of the rights  offering.  Each participant in the
                    rights offering shall receive its pro rata share of warrants
                    to  purchase,  at the  rights  offering  price (a) up to $20
                    million of additional  shares of  Reorganized  Geotek Common
                    Stock  within two years after the  conclusion  of the rights
                    offering and (b) up to an additional  $20 million  shares of
                    Reorganized  Geotek  Common Stock up to four years after the
                    conclusion of the rights offering. 

Filing and Hearing  Chapter 11 Plan and related disclosure statement to be filed
Dates:              on or before July 15, 1998.  Disclosure Statement hearing to
                    be scheduled  for on or before  August 15, 1998.  Chapter 11
                    Plan  to be  confirmed  on or  before  September  22,  1998.
                   

Conditions to       Satisfactory   completion  by  S-C  Rig  III  (in  its  sole
Rights  Offering:   determination)  on or  before  September  15,  1998  of  due
                    diligence  with  respect to  Debtors'  financial,  business,
                    operational  and legal  condition and prospects,  including,
                    without limitation: 

                    1.   Reasonably  allowable  non-subordinated  claims against
                         Geotek  not in  excess  of  $265,000,000.  

                    2.   Title  to   license,   intellectual   property,   etc.,
                         including with respect to Raphael.


- --------

2/        Subject to tax analysis  regarding  preservation  of any necessary net
          operating loss carryforwards.






<PAGE>

                                                            Page 71 of 108 Pages






                    3.   Satisfactory   ongoing   relationships  of  Reorganized
                         Debtors  with HNS,  IBM and  Raphael.  

                    4.   Registration  rights  agreement for New Common Stock of
                         Reorganized  Geotek on reasonable terms and conditions.

                    5.   Debtors' projected cash needs and uses, after extension
                         of  DIP  Facility,   and  without  application  of  any
                         encumbered cash, shall not exceed  $10,000,000  through
                         October  2,  1998.  

                    6.   Satisfactory  means to assume executory  contracts that
                         are reasonably necessary for Reorganized Debtors.

                    7.   Going  concern  valuation of Debtors  under  Chapter 11
                         Plan exceeds (in  reasonable  determination  of S-C Rig
                         III) liquidation value of Debtors. 

                    Completion  by Geotek on or before August 3, 1998 of revised
                    going-concern  Business Plan reasonably  satisfactory to S-C
                    Rig III. 

                    No material  averse change in Debtors'  business,  financial
                    condition,  operations  or property  from and after June 29,
                    1998.  

                    Adherence by Debtors to DIP Facility Budget and otherwise no
                    event of default/termination event under DIP Facility.







<PAGE>

                                                            Page 72 of 108 Pages






Fiduciary Out       Geotek  acknowledges  that Lender is committing  substantial
and Breakup Fee     time and  resources  to the Chapter 11 Plan  process,  which
                    will be proceeding over a short period.  Lender acknowledges
                    Geotek's  fiduciary  duties  in  connection  therewith.   In
                    furtherance  of the  foregoing,  the parties  agree that the
                    Debtors shall be free to respond to (including  assisting in
                    due  diligence,   subject  to  appropriate   confidentiality
                    restrictions),  inquiries or offers by third parties, and to
                    negotiate  and  accept  such  offers,  to  acquire  all or a
                    substantial  portion of the  Debtors'  assets or  businesses
                    and/or to finance a chapter 11 plan,  and to provide  prompt
                    notice of the  proposed  Chapter 11 Plan and this Term Sheet
                    to all parties previously  contacted by the Debtors or their
                    advisors or who had previously expressed an interest in such
                    a transaction ("Third Party Transaction"); provided that (a)
                    S-C Rig III shall be paid  $600,000 from the proceeds of any
                    Third Party  Transaction upon the closing thereof unless S-C
                    Rig III shall  have  materially  breached  this  Term  Sheet
                    ("Breakup Fee") and (b) the Debtors shall not accept a Third
                    Party  Transaction  that results in an investment to acquire
                    equity in Reorganized  Debtors that is less than $20 million
                    plus 7.5% of the enterprise  value for reorganized  Debtors,
                    or a comparable  purchase price,  under the Chapter 11 Plan.
                    Nothing in the foregoing sentence shall preclude the Debtors
                    from  engaging  in  negotiations  with any party in interest
                    regarding  the terms and  conditions of any Chapter 11 Plan.
                    The  foregoing in its  totality  shall be referred to as the
                    "Fiduciary Out."









<PAGE>

                                                            Page 73 of 108 Pages




                    For  the   avoidance  of  doubt,   assuming  the   following
                    hypothetical  facts, a Third Party Transaction would have to
                    exceed  the  amounts  of  the  second  two  columns  in  the
                    following example to meet the Fiduciary Out.





Court determined       "Reorganized"
Enterprise Value        Lender Debt      Equity Investment              7.5%
- ----------------       -------------     -----------------              ----
    $330M                  $275M                $20M                   24.75M




Agreed to as of the
29th day of June, 1998



S-C Rig Investments III, L.P., by                    Geotek Communications, Inc.
  S-C Rig Co., its general partner

/s/ Peter Hurwitz                                    /s/ Anne E. Eisele
- -----------------------------------                  --------------------------
Name: Peter Hurwitz                                  Name: Anne E. Eisele
Title: Vice President                                Title:   CFO



                                                     Geotek USA, Inc.


                                                     /s/ Anne E. Eisele
                                                     --------------------------
                                                     Name: Anne E. Eisele
                                                     Title: CFO









                                                            Page 74 of 108 Pages


                                                                  CONFORMED COPY



                       FIRST AMENDMENT TO CREDIT AGREEMENT

          FIRST AMENDMENT, dated as of July 15, 1998 (this "Amendment"),  to the
Credit  Agreement  dated  as of June  29,  1998  (as  amended,  supplemented  or
otherwise   modified,   the  "Credit   Agreement"),   by  and   between   Geotek
Communications,  Inc., a corporation  organized under the laws of Delaware and a
debtor and  debtor-in-possession  and Geotek USA, Inc., a corporation  organized
under the laws of Delaware and a debtor and debtor-in-possession  (together, the
"Borrowers"),  and S-C Rig Investments III, L.P., a Delaware limited partnership
(the "Lender").

                              W I T N E S S E T H:


          WHEREAS,  the  Borrowers  and the  Lender  are  parties  to the Credit
Agreement;

          WHEREAS,  the Borrowers have  requested  that the Credit  Agreement be
amended as provided herein; and

          WHEREAS,  the  Lender is  willing  to so amend the  Credit  Agreement,
subject to the conditions set forth herein;

          NOW, THEREFORE, in consideration of the premises and mutual agreements
contained herein, and for other good and valuable consideration, the sufficiency
of which is hereby  acknowledged,  the  Borrowers and the Lender hereby agree as
follows:


          1. Defined Terms.  Unless otherwise  defined herein,  terms defined in
the Credit Agreement shall have such meanings when used herein.

          2. Amendment of Section 6.1(b)(iii). Section 6.1(b)(iii) of the Credit
Agreement is amended in its entirety to read as follows:

               (iii) the  Bankruptcy  Court shall have  scheduled the hearing on
approval of the Disclosure  Statement  under section 1125 of the Bankruptcy Code
to occur no later than August 18, 1998.






                                        1

<PAGE>

                                                            Page 75 of 108 Pages





               3.  Amendment  of  Section  8.11.  Section  8.11  of  the  Credit
Agreement is amended in its entirety to read as follows:

          8.11  Fiduciary  Out. On or before 3 Banking  Days after the date that
the Borrowers file their Plan of Reorganization,  the Borrowers shall have filed
an application for approval of the Fiduciary Out.

               4.  Amendment  of  Section  8.12.  Section  8.12  of  the  Credit
Agreement  is amended by (a)  deleting  the words "July 15,  1998" in the second
line  thereof,  and  replacing  them with the words  "July  21,  1998";  and (b)
deleting the words "August 15, 1998" in the fourth line  thereof,  and replacing
them with the words "August 18, 1998".

               5. Representations and Warranties.  The Borrowers hereby confirm,
reaffirm and restate the  representations and warranties made by them in Article
7 of the Credit Agreement,  provided that each reference to the Credit Agreement
therein shall be deemed to be a reference to the Credit  Agreement  after giving
effect to this Amendment. The Borrowers represent and warrant that no Default or
Event of Default has occurred and is continuing.

               6. Continuing  Effect of Credit  Agreement.  This Amendment shall
not constitute a waiver, amendment or modification of any other provision of the
Credit Agreement not expressly  referred to herein and shall not be construed as
a waiver or consent to any further or future action on the part of the Borrowers
that  would  require a waiver or  consent  of the  Lender.  Except as  expressly
amended or modified herein, the provisions of the Credit Agreement are and shall
remain in full force and effect.

               7. Counterparts. This Amendment may be executed by one or more of
the  parties  hereto  on any  number  of  separate  counterparts  and  all  such
counterparts  shall be  deemed  to be one and the same  instrument.  Each  party
hereto confirms that any facsimile copy of such party's executed  counterpart of
this Amendment (or its signature page thereof) shall be deemed to be an executed
original thereof.

               8. Effectiveness.  This Amendment shall be effective upon receipt
by the  Lender of  counterparts  hereof,  duly  executed  and  delivered  by the
Borrowers.



                                        2

<PAGE>

                                                            Page 76 of 108 Pages





               9.  Governing  Law.  This  Amendment  shall be  governed  by, and
interpreted and construed in accordance  with, the internal laws of the State of
New York without regard to the choice of law principles  thereof,  except to the
extent governed by the Bankruptcy Code.


          IN WITNESS  WHEREOF,  the parties hereto have caused this Amendment to
be duly executed and delivered by their proper and duly  authorized  officers as
of the day and year first above written.

                                            GEOTEK COMMUNICATIONS, INC.

                                            By: /s/ Anne E. Eisele
                                                -------------------------------
                                                 Title: SVP-CFO


                                            GEOTEK USA, INC.

                                            By: /s/ Anne E. Eisele
                                                -------------------------------
                                                 Title: SVP-CFO



                                            S-C RIG INVESTMENTS III, L.P., by
                                               S-C Rig Co., its general partner

                                            By: /s/ Peter Hurwitz
                                                -------------------------------
                                                 Title: Vice President



                                        3


                                                            Page 77 of 108 Pages


                          SECURITY AND PLEDGE AGREEMENT




                            dated as of June 29, 1998




                                     between




                          GEOTEK COMMUNICATIONS, INC.,
                      GEOTEK USA, INC. and SUBSIDIARIES, as
                        Debtors and Debtors-in-Possession

                                       and

                          S-C RIG INVESTMENTS III, L.P.







<PAGE>

                                                            Page 78 of 108 Pages



                                Table of Contents


                                                                            Page

ARTICLE 1 DEFINITIONS.........................................................1
         Section 1.1       Definitions........................................1

ARTICLE 2 COLLATERAL..........................................................4
         Section 2.1       Security Interest in the Collateral................4

ARTICLE 3 REPRESENTATIONS AND WARRANTIES......................................7
         Section 3.1       Representations and Warranties.....................7

ARTICLE 4 CASH PROCEEDS OF COLLATERAL.........................................8
         Section 4.1       Collateral Account.................................8
         Section 4.2       Proceeds of Collateral.............................8

ARTICLE 5         FURTHER ASSURANCES; REMEDIES................................9
         Section 5.1       Further Assurances; Remedies.......................9
                  (a)      Delivery and Other Perfection......................9
                  (b)      Preservation of Rights............................10
                  (c)      Special Provisions Relating to Certain Collateral.10
                  (d)      Events of Default, Etc............................11
                  (e)      FCC Approval......................................12
         Section 5.2       Deficiency........................................12
         Section 5.3       Removals, Etc.....................................12
         Section 5.4       Application of Proceeds...........................13
         Section 5.5       Attorney-in-Fact..................................13
         Section 5.6       Perfection........................................13
         Section 5.7       Termination.......................................13
         Section 5.8       Expenses and Indemnities..........................13
         Section 5.9       Further Assurances................................14
         Section 5.10      Releases..........................................14
         Section 5.11      Other Financing Statements and Liens..............14

ARTICLE 6         MISCELLANEOUS..............................................15
         Section 6.1       No Waiver.........................................15
         Section 6.2       Notices...........................................15
         Section 6.3       Amendments, Etc...................................15
         Section 6.4       Successors and Assigns............................15
         Section 6.5       Captions..........................................15
         Section 6.6       Counterparts......................................15
         Section 6.7       Governing Law.....................................15
         Section 6.8       Severability......................................15




                                        i

<PAGE>

                                                            Page 79 of 108 Pages



ANNEXES

         Annex 1           List of SMR Licenses
         Annex 2A          Pledged Issuer Interests
         Annex 2B          Pledged Investment Interests
         Annex 3           Locations

                                       ii

<PAGE>




                                                            Page 80 of 108 Pages


                          SECURITY AND PLEDGE AGREEMENT


          SECURITY AND PLEDGE AGREEMENT,  dated as of June 29, 1998 by and among
GEOTEK   COMMUNICATIONS,   INC.,  a  Delaware   corporation  and  a  debtor  and
debtor-in-possession,  GEOTEK USA, INC., a Delaware corporation and a debtor and
debtor-in-possession  (together the  "Borrowers")  and their direct and indirect
wholly-owned   SUBSIDIARIES   signatories  hereto,  who  are  also  debtors  and
debtors-in-possession (the "Subsidiaries;"  collectively with the Borrowers, the
"Pledgors") and S-C RIG INVESTMENTS  III, L.P., a Delaware  limited  partnership
(the "Lender").


                              W I T N E S S E T H:


          WHEREAS,  the  Borrowers  and the Lender  have  entered  into a Credit
Agreement (as amended and in effect from time to time, the "Credit  Agreement"),
dated as of June 29,  1998,  pursuant  to which the Lender has agreed to provide
the Borrowers with a $10,000,000  working capital loan facility available in two
tranches, upon the terms and subject to the conditions set forth therein;

          WHEREAS,  it is a  condition  precedent  to the  effectiveness  of the
Credit  Agreement  that the Pledgors  shall have  executed and  delivered to the
Lender a Security and Pledge Agreement in substantially the form hereof;

          NOW  THEREFORE,  in  consideration  of the premises and the agreements
herein and in order to induce the Lender to make the Loan,  the Pledgors  hereby
agree as follows:

                                    ARTICLE 1

                                   DEFINITIONS

          Section 1.1 Definitions. All terms used in this Agreement that are not
otherwise  defined shall have the meanings  assigned to such terms in the Credit
Agreement.  As used in this  Agreement,  the  following  terms  shall  have  the
respective  meanings  indicated below, such meanings to be applicable equally to
both the singular and plural forms of the terms defined:

          "Account"  shall mean any "account" as such term is defined in section
9-106 of the UCC,  now owned or  hereafter  acquired by any Pledgor  and, in any
event, includes, without limitation, (i) all accounts receivable, book debts and
other forms of obligations (other than forms of obligations evidenced by Chattel
Paper,  Documents or Instruments) now owned or hereafter received or acquired by
or belonging or owing to any Pledgor (including,  without limitation,  under any






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                                                            Page 81 of 108 Pages





trade name,  style or  division  thereof)  whether  arising out of goods sold or
services rendered by any Pledgor or from any other  transaction,  whether or not
the same involves the sale of goods or services by a Pledgor (including, without
limitation,  any such obligation  which might be  characterized as an account or
contract right under the UCC),  (ii) all of the rights of any Pledgor in, to and
under all purchase orders or receipts now owned or hereafter  acquired by it for
goods or services, and all rights of any Pledgor to any goods represented by any
of the foregoing  (including,  without  limitation,  unpaid  seller's  rights of
rescission,  replevin,  reclamation  and  stoppage  in  transit  and  rights  to
returned, reclaimed or repossessed goods), (iii) all moneys due or to become due
to any Pledgor under all contracts for the sale of goods or the  performance  of
services or both by any Pledgor (whether or not yet earned by performance on the
part of any  Pledgor  or in  connection  with  any  other  transaction),  now in
existence or hereafter occurring,  including,  without limitation,  the right to
receive  the  proceeds  of said  purchase  orders  and  contracts,  and (iv) all
collateral  security and guarantees of any kind given by any Person with respect
to any of the foregoing.

          "Agreement" shall mean this Security and Pledge Agreement, as the same
may be modified,  supplemented  or amended from time to time in accordance  with
its terms.

          "Chattel Paper" means any "chattel  paper," as such term is defined in
section 9-105(1)(b) of the UCC, now owned or hereafter acquired by any Pledgor.

          "Collateral"  shall  have the  meaning  assigned  to that  term  under
Section 2.1 hereof.

          "Collateral  Account" shall have the meaning  assigned to that term in
Section 4.1 hereof.

          "Contracts" shall mean all contracts, undertakings or other agreements
(other than  Chattel  Paper,  Documents  or  Instruments)  in or under which any
Pledgor may now or hereafter  have any right,  title or interest,  any agreement
relating to the terms of payment or the terms of performance thereof.

          "Documents"  shall  mean any  "document,"  as such term is  defined in
section 9-105(1)(f) of the UCC, now owned or hereafter acquired by any Pledgor.

          "Domestic Issuers" shall mean,  collectively,  the direct and indirect
Subsidiaries  of the  Borrowers so  identified  on Annex 2A hereto and any other
corporation that becomes a direct or indirect Subsidiary of the Borrowers at any
time after the date of this Agreement.

          "Equipment"  shall  mean any  "equipment,"  as such term is defined in
section 9-109(2) of the UCC, now owned or hereafter acquired by any Pledgor and,





<PAGE>

                                                            Page 82 of 108 Pages

                                      




in  any  event,  includes,   without  limitation,   all  machinery,   equipment,
furnishings,  fixtures, vehicles, computers and other electronic data-processing
and office equipment now owned or hereafter  acquired by any Pledgor and any and
all additions,  substitutions and replacements of any of the foregoing, wherever
located,  together  with  all  attachments,  components,  parts,  equipment  and
accessories installed thereon or affixed thereto.

          "FCC" shall mean the U.S. Federal Communications Commission.

          "Foreign  Issuers" shall mean,  collectively,  the direct and indirect
Subsidiaries of the Borrowers so identified on Annex 2B hereto.

          "General Intangibles" means any "general intangibles," as such term is
defined in section  9-106 of the UCC,  now owned or  hereafter  acquired  by any
Pledgor and, in any event, includes, without limitation, to the extent grantable
by  applicable  law,  any SMR  Licenses  granted to a Pledgor or under which any
Pledgor  has any  rights,  as the  same  may  from  time  to  time  be  amended,
supplemented,  or otherwise modified,  including,  without  limitation,  (i) all
rights of any Pledgor to receive  moneys due and to become due to it  thereunder
or in  connection  therewith,  (ii) all right of any Pledgor to damages  arising
thereunder  and (iii) all rights of any Pledgor to perform  and to exercise  all
remedies  thereunder,  all  customer  lists,  trademarks,   patents,  rights  in
intellectual property, licenses, permits, copyrights, trade secrets, proprietary
or confidential information,  inventions (whether patented or patentable or not)
and technical information,  procedures,  designs, knowledge, know-how, software,
data bases, data, skill, expertise,  experience,  processes,  models,  drawings,
materials and records,  goodwill, rights of indemnification and all right, title
and  interest  which  any  Pledgor  may now or  hereafter  have in or under  any
Contract, now owned or hereafter acquired by any Pledgor.

          "Governmental  Authority"  shall mean (i) any  government or political
subdivision  thereof,  whether  foreign or domestic,  national,  state,  county,
municipal  or regional  or any other  government  authority,  (ii) any agency or
other  instrumentality  of any such government,  political  subdivision or other
governmental entity (including any central bank or comparable agency), (iii) any
court, arbitral tribunal or arbitrator and (iv) any non-governmental  regulating
body, to the extent that the rules,  regulations or orders of such body have the
force of law.

          "Instrument"  means  any  "instrument,"  as such  term is  defined  in
section  9-105(1)(i) of the UCC, now owned or hereafter  acquired by any Pledgor
other than  instruments  that  constitute,  or are a part of a group of writings
that constitute, Chattel Paper.

          "Interests Collateral" shall have the meaning assigned to such term in
Section 2.1(e) hereof.






<PAGE>

                                                            Page 83 of 108 Pages

          "Inventory"  means any "inventory," as such term is defined in section
9-109(4)  of the UCC,  now  owned or  hereafter  acquired  by any  Pledgor,  and
wherever  located,  and,  in  any  event,  includes,   without  limitation,  all
inventory, merchandise, goods and other personal property now owned or hereafter
acquired by any Pledgor which are held for sale or lease or are furnished or are
to be furnished  under a contract of service or which  constitute raw materials,
work in process or  materials  used or consumed or to be used or consumed in the
business of any Pledgor, or the processing,  packaging,  delivery or shipping of
the same, and all finished goods.

          "Issuers" shall mean, collectively,  the Subsidiaries of the Borrowers
identified  on Annex 2A and B hereto and any other  corporation  that  becomes a
direct or indirect  Subsidiary  of the  Borrowers  at any time after the date of
this Agreement.

          "Pledged  Interests"  shall have the meaning  assigned to such term in
Section 2.1(c) hereof.

          "SMR  Licenses"  shall have the  meaning  assigned  to such term under
Section 2.1(a) hereof.

          "UCC" shall mean the Uniform Commercial Code as in effect from time to
time in the State of New York;  provided,  however, in the event that, by reason
of mandatory  provisions  of law, any or all of the  attachment,  perfection  or
priority  of the  Lender's  Lien and  security  interest  in any  Collateral  is
governed by the Uniform  Commercial  Code as in effect in a  jurisdiction  other
than the State of New York,  the term "UCC"  shall mean the  Uniform  Commercial
Code as in effect in such other  jurisdiction  for  purposes  of the  provisions
hereof relating to such  attachment,  perfection or priority and for purposes of
definition related to such provisions.

                                    ARTICLE 2

                                   COLLATERAL

          Section  2.1  Security  Interest  in  the  Collateral.  As  collateral
security for the prompt payment in full when due (whether at stated maturity, by
acceleration or otherwise) of the Obligations, the Pledgors hereby pledge, grant
and assign to the Lender a Lien and  security  interest in all right,  title and
interest of the  Pledgors in the  following  property,  whether now owned by the
Pledgors or hereafter  acquired,  and whether now  existing or hereafter  coming
into existence (all being collectively referred to herein as "Collateral"):

               (a) all  grantable  rights of the  Pledgors in and to the special
mobile  radio  licenses  identified  in Annex 1  hereto  (the  "SMR  Licenses"),
including any  replacement  licenses  under the PageNet  Agreement  described in
clause (f) hereto;



<PAGE>

                                                            Page 84 of 108 Pages



               (b) the shares of capital stock or equity or ownership  interests
of each Issuer represented by the certificates identified in Annex 2A hereto and
all other shares of capital  stock or equity or ownership  interests of whatever
class of each Issuer,  now or  hereafter  owned by the  Pledgors,  in each case,
together with the certificates representing the same (collectively,  the "Issuer
Interests");

               (c) the shares of capital stock or equity or ownership  interests
of Anam Telecommunications, Geotek Argentina, S.A. and, to the extent grantable,
GMSI, Inc. represented by the certificates identified in Annex 2B hereto and all
other shares of capital stock or equity or ownership interests of whatever class
of each of those entities, now or hereafter owned by the Pledgors, in each case,
together  with  the  certificates  representing  the  same  (collectively,   the
"Investment  Interests;"  together  with  the  Issuer  Interests,  the  "Pledged
Interests");

               (d) all shares,  securities,  moneys or property  representing  a
dividend on any of the Pledged  Interests,  or  representing a  distribution  or
return of capital upon or in respect of the Pledged Interests, or resulting from
a  split-up,  revision,  reclassification  or other like  change of the  Pledged
Interests  or  otherwise  received in exchange  therefor,  and any  subscription
warrants,  rights or options  issued to the holders of, or  otherwise in respect
of, the Pledged Interests;

               (e) without  affecting the  obligations of the Pledgors under any
provision  prohibiting such action hereunder or under the Credit  Agreement,  in
the event of any consolidation or merger in which an Issuer is not the surviving
business  entity,  all  shares of each class of the  capital  stock or equity or
ownership  interests of the successor  business  entity  (unless such  successor
business  entity  is one of the  Borrowers)  formed  by or  resulting  from such
consolidation  or  merger  (the  Pledged  Interests,  together  with  all  other
certificates,  shares, securities, properties or moneys as may from time to time
be pledged  hereunder  pursuant  to clause (a) or (b) above and this  clause (e)
being herein collectively called the "Interests Collateral");

               (f)  all  rights  of any of the  Borrowers  under  and/or  to the
proceeds of (a) that certain SMR Frequency  Exchange  Agreement  dated March 14,
1997 by and between  Paging  Network of  America,  Inc.  ("PageNet")  and Geotek
Communications,  Inc.  (the "PageNet  Agreement")  with the exception of the New
York MTA license  assigned by PageNet to Geotek US  Networks,  Inc. and (b) that
certain   Purchase   Agreement  dated  April  3,  1998  by  and  between  Geotek
Communications, Inc., Gelico, Inc. and Industrial Wireless Technologies, Inc.;

               (g) the balance from time to time in the Collateral Account;

               (h) to the  extent  grantable  all  assets  of the  Pledgors  not
subject to any existing Lien, including, without limitation:

                    (i) all Accounts;






<PAGE>

                                                            Page 85 of 108 Pages






                    (ii) all Chattel Paper;

                    (iii)  all  Contracts,  including  each  Contract  and other
                    agreement of the Subsidiaries  relating to the sale or other
                    disposition of Inventory or Equipment, with the exception of
                    the May  Industrial  Wireless  Agreement,  as defined in the
                    Credit Agreement;

                    (iv) all Documents;

                    (v) all Equipment;

                    (vi) all Instruments;

                    (vii) all Inventory; and

                    (viii) all proceeds, products, offspring, accessions, rents,
                    profits, income, benefits, substitutions and replacements of
                    and to any of the property of the Pledgors  described in the
                    preceding  clauses  of this  Section 2  (including,  without
                    limitation, any proceeds of insurance thereon and all causes
                    of action,  claims and  warranties  now or hereafter held by
                    the  Pledgors in respect of any of the items  listed  above)
                    and, to the extent related to any property described in said
                    clauses  or such  proceeds,  products  and  accessions,  all
                    books,  correspondence,  credit files, records, invoices and
                    other papers, including without limitation all tapes, cards,
                    computer   runs  and  other  papers  and  documents  in  the
                    possession  or under  the  control  of the  Pledgors  or any
                    computer  bureau or service company from time to time acting
                    for the Pledgors;

                    but excluding any right,  title and interest of the Pledgors
                    in, to or under any Collateral (the "Excluded Property"), to
                    the  extent  the  security  interest  created  hereby  or an
                    assignment  as  security  of all or  part  of the  Pledgors'
                    right,  title or  interest  in,  to or under  such  Excluded
                    Property  would  breach,  violate or cause a default  (which
                    would not be  excused  or  permissible  under  the  relevant
                    provisions of the  Bankruptcy  Code or by entry of the Final
                    Order  or  Interim  Order,  as the case  may be)  under  any
                    agreement  or  Contract,  to which any of the  Pledgors is a
                    party  or by which it is  bound  relating  to such  Excluded
                    Property (it being understood, however, that the proceeds of
                    Excluded  Property shall not be excluded from the Collateral
                    except to the  extent  such a breach,  violation  or default
                    would  arise  from the  inclusion  of such  proceeds  in the
                    Collateral  (which would not be excused or permissible under
                    the relevant  provision of the  Bankruptcy  Code)).  Without
                    limiting  the  Borrowers'   obligations   under  the  Credit
                    Agreement with respect to such matters,  the foregoing grant
                    of a security  interest in and of itself shall not be deemed
                    (i) to constitute,  require or prevent the assumption of any
                    obligation  in the Chapter 11 Cases or (ii) to prohibit  the
                    rejection  of  any  obligation  in  the  Chapter  11  Cases.
                    Anything herein  contained to the contrary  notwithstanding,








<PAGE>

                                                            Page 86 of 108 Pages



                    the Pledgors  shall remain  liable under any  agreements  or
                    Contracts,  referred to in this Section 2 and to perform all
                    of  their   respective   obligations   thereunder,   all  in
                    accordance with the respective terms and provisions thereof,
                    but subject to the  relevant  provisions  of the  Bankruptcy
                    Code,  and the Lender shall have no  obligation or liability
                    under any of the  aforementioned  agreements or Contracts by
                    reason of or arising out of the foregoing  grant,  nor shall
                    Lender be required or  obligated in any manner to perform or
                    fulfill any obligation of the Pledgors pursuant thereto,  or
                    to make any payment,  or to present or file any claim, or to
                    take any action to collect  or  enforce  the  payment of any
                    amounts  which may have been  assigned to Lender or to which
                    it may be entitled at any time.  However,  the Lender shall,
                    at its option,  have the right,  but not the obligation,  to
                    cure any  defaults  under any such  agreements  or Contracts
                    being assumed  and/or  assumed and assigned to the Lender or
                    its designee in connection with the exercise of its remedies
                    hereunder and under Section 10.3 of the Credit Agreement.

                                    ARTICLE 3

                         REPRESENTATIONS AND WARRANTIES

          Section  3.1  Representations  and  Warranties.  Each of the  Pledgors
represents and warrants to the Lender as of the date hereof as follows:

               (a) It is (or  will  be at  the  time  the  Lien  created  hereby
attaches)  and  will  continue  to be until  all of the  Obligations  have  been
satisfied in full the sole legal,  beneficial and record owner of the Collateral
in which it purports to grant a security  interest  pursuant to Section 2 hereof
and no Lien exists or will exist upon such  Collateral at any time (and no right
or option to acquire the same exists in favor of any other  Person),  except for
the Liens and security  interests in favor of the Lender created or provided for
herein, and in the Credit Agreement and the Liens permitted under Section 9.2 of
the Credit  Agreement,  which  Liens and  security  interests  constitute  first
priority  perfected  Liens  and  security  interests  in  and  to  all  of  such
Collateral. There is no financing statement naming any of the Pledgors as debtor
(or  similar  documents  or  instrument  of  registration  under  the law of any
jurisdiction)  now on file or  registered  in any  public  office  covering  any
interest of the Pledgors in any Collateral.

               (b)  This  Agreement  creates  a valid  first  priority  security
interest  in  favor  of the  Lender  in the  Collateral,  as  security  for  the
Obligations. Upon entry of the Interim Order or Final Order, as the case may be,
such  security  interest  is, or in the case of  Collateral  in which any of the
Pledgors  obtains  rights  after the date  hereof,  will be, a  perfected  first
priority security  interest.  Upon entry of the Interim Order or Final Order, as
the case may be, all action  necessary  or desirable to perfect and protect such
security interest has been duly taken.

               (c)  The  Pledged  Interests   represented  by  the  certificates
identified in Annex 2A and B hereto are, and all other  Interests  Collateral in







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                                                            Page 87 of 108 Pages



which the  Pledgors 8 shall  hereafter  grant a security  interest  pursuant  to
Section 2 hereof  will be,  duly  authorized,  validly  issued,  fully  paid and
non-assessable  and none of such Pledged  Interests is or will be subject to any
restriction  under the  charter or by-laws of the Issuer and none of the Pledged
Interests  represented by the  certificates  identified in Annex 2A hereto is or
will be subject to any contractual restriction,  including any restrictions upon
the transfer of such Pledged Interests.

               (d)  Annex 2A and B  hereto  correctly  identify,  as at the date
hereof, the Issuers of such Pledged  Interests,  and, in respect of the Domestic
Issuers,  the  respective  class  and  par  value  of the  shares  or  interests
comprising such Pledged Interests,  the respective number of shares or interests
(and  registered  owners thereof)  represented by each such  certificate and the
percentage  represented  thereby of the total issued and  outstanding  shares or
interests  of capital  stock or interests of such class of stock or interests of
such Issuers,  and, in respect of the Foreign  Issuers,  the respective class of
the shares or interests  comprising  such Pledged  Interests and the  percentage
represented  thereby of the total issued and outstanding  shares or interests of
capital stock or interests of such class of stock or interests of such Issuers.

               (e) The chief executive office of the Borrowers is located at 102
Chestnut Ridge Road, Montvale, New Jersey 07645.

               (f) Each of the Domestic  Issuers  Identified  on Annex 2A hereto
has no Debt other than  indebtedness  incurred  in  acquiring  the SMR  Licenses
identified  in Annex 1 hereto  (with the  exception  of such  Domestic  Issuers'
guaranty of the Senior Secured Notes dated June 30, 1995).

                                    ARTICLE 4

                           CASH PROCEEDS OF COLLATERAL

          Section  4.1  Collateral  Account.  At Lender's  option,  there may be
established a cash collateral account (the "Collateral Account") in the name and
under the control of the Lender into which there may be  deposited  from time to
time the cash proceeds of any of the Collateral (including proceeds of insurance
thereon) and any additional  amounts deposited by the Pledgors from time to time
as collateral security for the Obligations. The balance from time to time in the
Collateral  Account shall constitute part of the Collateral  hereunder and shall
not constitute  payment of the Obligations  until applied in accordance with the
terms of the Credit Agreement.

          Section 4.2 Proceeds of Collateral.  Each of the Pledgors agrees that,
at any time  after the  occurrence  and during  the  continuance  of an Event of
Default,  if the proceeds of any Collateral  hereunder  shall be received by it,
the  Pledgors  shall,  upon the request of the  Lender,  as promptly as possible
deposit such proceeds into the Collateral Account. Until so deposited,  all such
proceeds shall be held in trust by the






<PAGE>

                                                            Page 88 of 108 Pages






Pledgors for and as the property of the Lender and shall not be commingled  with
any other funds or property of the Pledgors.

                                    ARTICLE 5

                          FURTHER ASSURANCES; REMEDIES

          Section 5.1 Further Assurances;  Remedies. In furtherance of the grant
of the security and pledge interest  pursuant to Section 2 hereof,  the Pledgors
hereby agree with the Lender as follows:

               (a) Delivery and Other Perfection. The Pledgors shall:

                    (1) if any of the shares, securities,  interests,  moneys or
property  required to be pledged by the  Pledgors  under  Section 2.1 hereof are
received  by the  Pledgors,  forthwith  either (i)  transfer  and deliver to the
Lender such  shares or  securities  or  interests  so  received by the  Pledgors
(together with the  certificates for any such shares and securities or interests
duly endorsed in blank or  accompanied  by undated stock powers duly executed in
blank),  all of which  thereafter  shall be held by the Lender,  pursuant to the
terms of this  Agreement,  as part of the  Collateral  or (ii) take  such  other
action as the Lender shall deem  necessary  or  reasonably  appropriate  to duly
record the Lien created hereunder in such shares, securities,  interests, moneys
or property in Section 2.1 herein;

                    (2)   deliver   and   pledge  to  the  Lender  any  and  all
Instruments,  endorsed and/or  accompanied by such instruments of assignment and
transfer in such form and  substance as the Lender may request  provided that so
long as no Default  shall have  occurred  and be  continuing,  the  Pledgors may
retain for  collection in the ordinary  course any  Instruments  received by the
Pledgors in the ordinary course of business and the Lender shall,  promptly upon
request of any of the  Pledgors  make  appropriate  arrangements  for making any
other Instrument  pledged by the Pledgors available to the Pledgors for purposes
of presentation,  collection or renewal (any such arrangement to be effected, to
the extent  deemed  appropriate  by the Lender,  against  trust  receipt or like
document);

                    (3) give, execute, deliver, file and/or record any financing
statement,  notice, instrument,  document, agreement or other papers that may be
necessary or  desirable  (in the  reasonable  judgment of the Lender) to create,
preserve,  perfect or validate the security  interest granted pursuant hereto or
to enable the Lender to exercise and enforce its rights  hereunder  with respect
to such security and pledge interest, including, without limitation, causing any
or all of the Interests Collateral to be transferred into the name of the Lender
or its nominee;






<PAGE>

                                                            Page 89 of 108 Pages





                    (4) keep full and accurate books and records relating to the
Collateral, and stamp or otherwise mark such books and records in such manner as
the Lender may  reasonably  require in order to reflect the  security  interests
granted by this Agreement; and

                    (5) permit  representatives  of the Lender,  upon reasonable
notice,  at any time during normal  business hours to inspect and make abstracts
from  its  books  and  records   pertaining  to  the   Collateral,   and  permit
representatives  of the  Lender  to be  present  at the  Pledgors'  place(s)  of
business to receive copies of all communications and remittances relating to the
Collateral,  and forward copies of any notices or communications received by the
Pledgors  with respect to the  Collateral,  all in such manner as the Lender may
reasonably require without undue disruption to Pledgors' business.

               (b)  Preservation of Rights.  The Lender shall not be required to
take steps  necessary to preserve any rights against prior parties to any of the
Collateral.

               (c) Special Provisions Relating to Certain Collateral.

                    (1) Interests Collateral.

                         (A) The Pledgors will cause the Interests Collateral to
include all of the capital stock or ownership  interests of the Pledgors in each
Issuer.

                         (B) So long as no Event of Default  shall have occurred
and be  continuing,  the  Pledgors  shall have the right to exercise all voting,
consensual and other powers of ownership  pertaining to the Interests Collateral
for all purposes not inconsistent with the terms of this Agreement and the other
Facility  Documents,  provided that the Pledgors agree that it will not vote the
Interests  Collateral in any manner that is inconsistent  with the terms of this
Agreement  or any other  Facility  Document,  and the Lender  shall  execute and
deliver to the  Pledgors or cause to be executed  and  delivered to the Pledgors
all such proxies,  powers of attorney,  dividend and other orders,  and all such
instruments,  without recourse,  as the Pledgors may reasonably  request for the
purpose of enabling  the  Pledgors to exercise  the rights and powers which they
are entitled to exercise pursuant to this Section 5.1(c).

                         (C) The  Issuers  shall  not and  Borrowers  shall  not
permit  any  Domestic  Issuer to incur,  create or assume  any Debt or incur any
liabilities without the express consent of the Lender.







<PAGE>

                                                            Page 90 of 108 Pages





                    (2) Equipment.  The Pledgors shall,  upon the request of the
Lender,  deliver  to the  Lender  originals  of the  certificates  of  title  or
ownership  for all  Equipment  covered by a  certificate  of title  owned by the
Pledgors with the Lender listed as lienholder, and take such other action as the
Lender shall deem appropriate to perfect the security interest created hereunder
in all such Equipment.

               (d) Events of Default,  Etc.  During any period  during  which an
Event of Default  shall have  occurred  and be  continuing,  but  subject to the
provisions of Section 5.1(e) hereof and Section 10.3 of the Credit Agreement:

                    (1)  each  Pledgor  shall,  at the  request  of the  Lender,
assemble  the  Collateral  owned  by it at  such  place  or  places,  reasonably
convenient  to both the  Lender and the  Pledgors,  designated  in the  Lender's
request;

                    (2)  the  Lender  may  make  any  reasonable  compromise  or
settlement deemed desirable with respect to any of the Collateral and may extend
the time of payment,  arrange for payment in  installments,  or otherwise modify
the terms of, any of the Collateral;

                    (3) the Lender  shall  have all of the  rights and  remedies
with respect to the  Collateral of a secured party under the Uniform  Commercial
Code (whether or not said Code is in effect in the jurisdiction where the rights
and remedies are  asserted) and such  additional  rights and remedies to which a
secured party is entitled under the laws in effect in any jurisdiction where any
rights and remedies hereunder may be asserted,  including,  without  limitation,
the right,  to the maximum  extent  permitted  by law,  to exercise  all voting,
consensual and other powers of ownership  pertaining to the Collateral as if the
Lender were the sole and absolute  owner thereof (and the Pledgors agree to take
all such action as may be appropriate to give effect to such right);

                    (4) the Lender in its discretion  may, in its name or in the
name of the  Borrowers or  otherwise,  demand,  sue for,  collect or receive any
money or property at any time payable or receivable on account of or in exchange
for any of the Collateral, but shall be under no obligation to do so;

                    (5) foreclose on this  Agreement and the security  interests
created thereby, and sell, lease, assign or otherwise dispose of all or any part
of the  Collateral or any part thereof  which shall then be or shall  thereafter
come into the possession,  custody or control of the Lender or any of its agents
in a public or private sale; and/or

                    (6) with  respect  to all  unexpired  leases  and  executory







<PAGE>

                                                            Page 91 of 108 Pages




contracts (within the meaning of the Bankruptcy Code), the Lender shall, without
application to or order of the Bankruptcy  Court, have the exclusive right, upon
the occurrence and during the continuance of an Event of Default,  to direct the
disposition,  subject to the rights and remedies  enforceable by or available to
parties,  other than the Pledgors  (including  rights  under  section 365 of the
Bankruptcy Code), with respect to such property,  of the Pledgors' right,  title
and interest in and to any such  property,  including  directing the Pledgors to
seek any consent necessary to dispose of such property or assume and assign such
property to the Lender or its designee.  The proceeds from any such  disposition
shall be applied in accordance with the terms of the Credit Agreement.

               (e) FCC Approval.  Any action by the Lender permitted pursuant to
Section 5.1(d) hereof that may  reasonably  result in the transfer to the Lender
or any other  entity of direct or  indirect  ownership  or control of any entity
holding  any SMR  Licenses  shall be  subject  to,  and shall not be  undertaken
without, the prior approval of the FCC. In the event that the Lender determines,
by notice to the Pledgor  holding  such SMR  Licenses,  to take any such action,
such Pledgor shall,  in  consultation  with the Lender,  use such Pledgor's best
efforts to obtain timely FCC approval for such transfer of ownership or control,
including, but not limited to, preparing, executing and filing all necessary FCC
applications, defending such applications against any petitions to deny or other
adverse  pleadings  filed with the FCC, and promptly  providing any documents or
other information requested by the FCC in connection with such applications. The
Lender shall have the right to prepare and file,  on behalf of any such Pledgor,
all  applications  and  documents  necessary  to  obtain  FCC  approval  of such
transfer,  and in the event that the Lender chooses to exercise this right,  the
Pledgor  holding the relevant SMR Licenses  shall timely provide the Lender with
all  information  and  assistance  requested  by the Lender that is, in the sole
discretion of the Lender,  necessary  for the Lender to make such  filings,  and
shall  reimburse the Lender for all legal and  administrative  costs incurred in
the  filing  of  such  applications  and in the  diligent  prosecution  of  such
applications at the FCC.

          Section 5.2 Deficiency.  If the proceeds of sale,  collection or other
realization  of or upon the  Collateral  pursuant to Section  5.1(d)  hereof are
insufficient to cover the costs and expenses of such realization and the payment
in full of the Obligations, the Pledgors shall remain liable for any deficiency.

          Section 5.3  Removals,  Etc.  Without at least 30 days' prior  written
notice to the Lender,  the  Pledgors  shall not  maintain any of their books and
records with respect to the  Collateral  at any office or maintain its principal
place of business at any place, to be located anywhere, other than at one of the
locations  identified in Annex 3 hereto under its name or in transit from one of
such  locations  to another or (ii) change its name,  or the name under which it
does business, from the name shown on the signature pages hereto.







<PAGE>

                                                            Page 92 of 108 Pages






          Section  5.4  Application  of  Proceeds.  Except as  otherwise  herein
expressly provided, the proceeds of any collection, sale or other realization of
all or any part of the  Collateral of the Pledgors  under Section 5.1(d) hereof,
and any other cash of the  Pledgors at the time held by the Lender  under and in
accordance  with  Section 4 hereof or this  Section  5,  shall be applied by the
Lender to reduce the Obligation then outstanding in accordance with the terms of
the Credit Agreement.

          As used in this Section 5,  "proceeds" of Collateral  shall mean cash,
securities and other property  realized in respect of, and distributions in kind
of,  Collateral,  including  any  thereof  received  under  any  reorganization,
liquidation  or  adjustment of debt of the Borrowers or any Issuer of any of the
Collateral.

          Section 5.5  Attorney-in-Fact.  Without  limiting any rights or powers
granted by this  Agreement  to the Lender while no Event of Default has occurred
and is continuing,  upon the occurrence and during the  continuance of any Event
of Default,  the Lender is hereby appointed the attorney-in-fact of the Pledgors
for the purpose of carrying out the  provisions of this Section 5 and taking any
action and  executing  any  instruments  which the Lender may deem  necessary or
reasonably  advisable to accomplish the purposes  hereof,  which  appointment as
attorney-in-fact is irrevocable and coupled with an interest.

          Section 5.6 Perfection.  Prior to or  concurrently  with the execution
and  delivery of this  Agreement,  the  Pledgors  shall (a) file such  financing
statements  and other  documents  in such  offices as the Lender may  request to
perfect the security  interests granted by Section 2.1 hereof and (b) deliver to
the Lender all certificates identified in Annex 2A and B hereto,  accompanied by
undated stock powers duly executed in blank.

          Section 5.7 Termination. When all the Obligations shall have been paid
in full and the Commitments of the Lender under the Credit  Agreement shall have
expired or been terminated, this Agreement shall terminate, and the Lender shall
forthwith cause to be assigned,  transferred and delivered,  against receipt but
without any  recourse,  warranty or  representation  whatsoever,  any  remaining
Collateral  and money  received  in respect  thereof,  to or on the order of the
Pledgors and to be released and canceled all licenses and rights  referred to in
Section 5.6(b) hereof. The Lender shall also execute and deliver to the Pledgors
upon such  termination such Uniform  Commercial Code termination  statements and
such other  documentation  as shall be  reasonably  requested by the Pledgors to
effect  the  termination  and  release  of the  Lien  of this  Agreement  on the
Collateral.

          Section 5.8 Expenses and Indemnities.

               (a) The Pledgors agree to reimburse the Lender for all reasonable
out-of-pocket  expenses  of  the  Lender  (including,  without  limitation,  the
reasonable  fees and  expenses of outside and  internal  legal  counsel)  of, or







<PAGE>

                                                            Page 93 of 108 Pages




incident  to (i) any Event of Default  and (ii) any  enforcement  or  collection
proceeding resulting therefrom,  including,  without limitation, (A) performance
by the Lender of any  obligations  of the Pledgors in respect of the  Collateral
that the Pledgors have failed or refused to perform, (B) any actual or attempted
sale,  or any  exchange,  enforcement,  collection,  compromise or settlement in
respect  of any of the  Collateral,  and for  the  care  of the  Collateral  and
defending or asserting  rights and claims of the Lender in respect  thereof,  by
litigation  or  otherwise,  including  expenses of  insurance,  (C)  judicial or
regulatory  proceedings  and (D) the enforcement of this Section 5, and all such
expenses shall be Obligations to the Lender secured under Section 2 hereof.

               (b) The Pledgors  agree to indemnify  the Lender from and against
any and all claims, losses and liabilities (including,  without limitation,  the
reasonable  fees,  client charges and other expenses of the Lender's outside and
internal  counsel)  growing  out of or  resulting  from  this  Agreement  or the
enforcement of any of the terms hereof (including,  without limitation, the sale
of  Collateral  pursuant  to a public  or  private  offering  and each and every
document produced in furtherance thereof),  except claims, losses or liabilities
resulting  solely and directly  from the Lender's  gross  negligence  or willful
misconduct.

          Section 5.9 Further Assurances.  The Pledgors agree that, from time to
time upon the  written  request of the Lender,  the  Pledgors  will  execute and
deliver such further  documents  and do such other acts and things as the Lender
may reasonably request in order fully to effect the purposes of this Agreement.

          Section  5.10  Releases.  Without  limiting  the  obligations  of  the
Pledgors  hereunder and under the Credit Agreement,  upon the sale,  assignment,
transfer or other  disposition of any property  effected in accordance  with the
Credit  Agreement,  the Lender shall,  at the  Borrowers'  expense,  execute and
deliver to the Pledgors such Uniform Commercial Code termination  statements and
such other  documentation  as shall be  reasonably  requested by the Pledgors to
effect  the  termination  and  release  of the  Lien of this  Agreement  on such
property.

          Section 5.11 Other Financing Statements and Liens. Except as otherwise
permitted under Section 9.2 of the Credit Agreement and except for precautionary
financing  statements  filed with  respect to  operating  leases (as  defined in
accordance with GAAP) entered into by the Pledgors,  the Pledgors shall not file
or suffer to be on file, or authorize or permit to be filed or to be on file, in
any jurisdiction, any financing statement or like instrument with respect to the
Collateral in which the Lender is not named as the sole secured party.







<PAGE>

                                                            Page 94 of 108 Pages
                            




                                    ARTICLE 6

                                  MISCELLANEOUS

          Section  6.1 No  Waiver.  No  failure on the part of the Lender or any
agent of the Lender to  exercise,  and no course of dealing with respect to, and
no delay in exercising,  any right, power or remedy hereunder shall operate as a
waiver  thereof;  nor shall any single or partial  exercise by the Lender or any
agent of the Lender of any right,  power or remedy hereunder  preclude any other
or further exercise thereof or the exercise of any other right, power or remedy.
The  remedies  herein  are  cumulative  and are not  exclusive  of any  remedies
provided by law.

          Section 6.2  Notices.  All  notices,  requests,  consents  and demands
hereunder  shall be made in the manner and at the addresses set forth in Section
11.6 of the Credit Agreement.

          Section  6.3  Amendments,  Etc.  The  terms of this  Agreement  may be
waived, altered or amended only by an instrument in writing duly executed by the
Pledgors and the Lender.  Any such amendment or waiver shall be binding upon the
Lender and the Pledgors.

          Section 6.4  Successors and Assigns.  This Agreement  shall be binding
upon and inure to the benefit of the  respective  successors  and assigns of the
Pledgors and the Lender (provided that the Pledgors shall not assign or transfer
its rights hereunder without the prior written consent of the Lender).

          Section 6.5  Captions.  The  captions and section  headings  appearing
herein are included  solely for convenience of reference and are not intended to
affect the interpretation of any provision of this Agreement.

          Section 6.6 Counterparts. This Agreement may be executed in any number
of  counterparts,  all of which taken together shall constitute one and the same
instrument  and any of the parties  hereto may execute this Agreement by signing
any such counterpart.

          Section 6.7 Governing  Law. This  Agreement  shall be governed by, and
construed in accordance with, the internal law of the State of New York, without
regard to choice of law principles thereof.

          Section  6.8  Severability.  If any  provision  hereof is invalid  and
unenforceable in any jurisdiction, then, to the fullest extent permitted by law,
(i) the other  provisions  hereof  shall remain in full force and effect in such
jurisdiction  and shall be  liberally  construed in favor of the Lender order to
carry out the  intentions of the parties hereto as nearly as may be possible and







<PAGE>

                                                            Page 95 of 108 Pages

                                            



(ii)  the  invalidity  or  unenforceability  of  any  provision  hereof  in  any
jurisdiction  shall not affect the validity or  enforceability of such provision
in any other jurisdiction.

          IN WITNESS  WHEREOF,  the parties hereto have caused this Security and
Pledge  Agreement to be duly executed and delivered as of the day and year first
above written.


                                                     GEOTEK COMMUNICATIONS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK USA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     ANSA COMMUNICATIONS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     CLW COMMUNICATIONS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     CUMULOUS HOLDING CORP.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO








<PAGE>

                                                            Page 96 of 108 Pages
                                                




                                                     GELICO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GELICO OF CHICAGO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GENERAL PHOTONICS HOLDING
                                                        CORPORATION

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOPOWER, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK ACQUISITION CORP.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK AMERICA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO







<PAGE>

                                                            Page 97 of 108 Pages
                                            




                                                     GEOTEK ASIA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK DATA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK FINANCING 
                                                       CORPORATION

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK GMBH HOLDING
                                                        CORPORATION

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK INTERNATIONAL
                                                        NETWORKS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK HOLDINGS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO









<PAGE>

                                                            Page 98 of 108 Pages

                                            




                                                     GEOTEK OF ATLANTA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF BOSTON, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF CHICAGO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF DALLAS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF HOUSTON, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF MIAMI, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO











<PAGE>

                                                            Page 99 of 108 Pages

                                          




                                                     GEOTEK OF NEW YORK, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF ORLANDO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF PHILADELPHIA,INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF TAMPA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK OF WASHINGTON, D.C.,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK SERVICES, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO










<PAGE>

                                                           Page 100 of 108 Pages

                  



                                                     GEOTEK SUBSIDIARY 
                                                       INDUSTRIES, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     GEOTEK TECHNOLOGIES, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     LASER ACQUISITION 
                                                       CORPORATION

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     METRO NET SYSTEMS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     M.I.S. HOLDINGS ACQUISITION
                                                        CORP.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     MOBILE MESSAGE SERVICE OF
                                                        TEXAS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title:CFO







<PAGE>

                                                           Page 101 of 108 Pages

                                             




                                                     OAKHILL COMMUNICATIONS,INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     ORAM USA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     PATLEX INTERNATIONAL
                                                        CORPORATION

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     PATLEX OF DELAWARE, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM MICROWAVE,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF ATLANTA,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO








<PAGE>

                                                           Page 102 of 108 Pages
                              




                                                     POWERSPECTRUM OF BOSTON, 
                                                       INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF BUFFALO,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF CHARLOTTE,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF CHICAGO,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF 
                                                       CINCINNATI, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ---------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF D.C., INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO






<PAGE>

                                                           Page 103 of 108 Pages






                                                     POWERSPECTRUM OF DALLAS, 
                                                       INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF DENVER, 
                                                       INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF
                                                       GREENSBORO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF HARTFORD,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF
                                                        INDIANAPOLIS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO














<PAGE>

                                                           Page 104 of 108 Pages





                                                     POWERSPECTRUM OF
                                                        JACKSONVILLE, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF KANSAS 
                                                       CITY, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF MEMPHIS,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF MIAMI, 
                                                       INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF
                                                        MINNEAPOLIS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF NASHVILLE,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO






<PAGE>

                                                           Page 105 of 108 Pages






                                                     POWERSPECTRUM OF NEW YORK
                                                        CITY, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF ORLANDO,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF
                                                        PHILADELPHIA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF PHOENIX,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF ROCHESTER,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO









<PAGE>

                                                           Page 106 of 108 Pages





                                                     POWERSPECTRUM OF SALT LAKE
                                                        CITY, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF
                                                        SAN FRANCISCO, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF SEATTLE,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     POWERSPECTRUM OF TAMPA,
                                                        INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     RESHEF USA, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO


                                                     U.S.I. VENTURE CORP.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO







<PAGE>

                                                           Page 107 of 108 Pages





                                                     POWERSPECTRUM OF
                                                        NEW ORLEANS, INC.

                                                     By: /s/ Anne E. Eisele
                                                         ----------------------
                                                         Title: CFO



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<PAGE>

                                                           Page 108 of 108 Pages




                                                     S-C RIG INVESTMENTS III, 
                                                       L.P., by S-C Rig Co., 
                                                       its general partner

                                                     By: /s/ Peter Hurwitz
                                                         ----------------------
                                                         Title: Vice President





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