AYDIN CORP
SC 14D1, 1999-03-05
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>
===============================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                 SCHEDULE 14D-1

                             TENDER OFFER STATEMENT
                          PURSUANT TO SECTION 14(D)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                                       AND
                                  STATEMENT ON

                                  SCHEDULE 13D
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

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

                                AYDIN CORPORATION
                            (NAME OF SUBJECT COMPANY)

                          ANGEL ACQUISITION CORPORATION
                         L-3 COMMUNICATIONS CORPORATION
                        L-3 COMMUNICATIONS HOLDINGS, INC.
                                    (BIDDER)

                     COMMON STOCK, PAR VALUE $1.00 PER SHARE
                         (TITLE OF CLASS OF SECURITIES)

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

                                    05468110
                      (CUSIP NUMBER OF CLASS OF SECURITIES)

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

                          CHRISTOPHER C. CAMBRIA, ESQ.
                  VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                         L-3 COMMUNICATIONS CORPORATION
                                600 THIRD AVENUE
                               NEW YORK, NY 10016
                            TELEPHONE: (212) 697-1111
           (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO
             RECEIVE NOTICES AND COMMUNICATIONS ON BEHALF OF BIDDER)

                                   Copy to:
                            WILLIAM E. CURBOW, ESQ.
                          SIMPSON THACHER & BARTLETT
                             425 LEXINGTON AVENUE
                           NEW YORK, NEW YORK 10017
                           TELEPHONE: (212) 455-2000

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

                           CALCULATION OF FILING FEE
===============================================================================
Transaction Valuation* $72,310,037               Amount of Filing Fee** $14,462
===============================================================================
 *  Based on the offer to purchase all of the outstanding shares of Common Stock
    of the Subject Company at $13.50 cash per Share for 5,220,936 Shares
    outstanding as of March 1, 1999 and $1,827,401 that will be payable to
    holders of outstanding options and warrants as of March 1, 1999.

**  1/50 of 1% of Transaction Valuation.

[ ] Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
    and identify the filing with which the offsetting fee was previously paid.
    Identify the previous filing by registration statement number, or the Form
    or Schedule and the date of its filing.

Amount Previously Paid:                      Filing Party:
                                                          

Form or Registration No.:                    Date Filed:
===============================================================================
<PAGE>
- ------------------
CUSIP NO. 05468110
- ------------------

- -------------------------------------------------------------------------------
  1  NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

     ANGEL ACQUISITION CORPORATION
- -------------------------------------------------------------------------------
  2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a)  [ ]
                                                                       (b)  [ ]
- -------------------------------------------------------------------------------
  3  SEC USE ONLY
- -------------------------------------------------------------------------------
  4  SOURCE OF FUNDS

     AF
- -------------------------------------------------------------------------------
  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
 
                    0
  NUMBER OF  ------------------------------------------------------------------
    SHARES     8    SHARED VOTING POWER*
 BENEFICIALLY
   OWNED BY         620,700
     EACH    ------------------------------------------------------------------
  REPORTING    9    SOLE DISPOSITIVE POWER
    PERSON   
     WITH           0                                                          
             ------------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER  
                                 
                    0                                                          
- -------------------------------------------------------------------------------
  11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON*

     620,700
- -------------------------------------------------------------------------------
  12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                         [ ]
- -------------------------------------------------------------------------------
  13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     11.8% (BASED ON 5,220,936 OUTSTANDING)
- -------------------------------------------------------------------------------
  14 TYPE OF REPORTING PERSON

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

 *  Beneficial ownership is based solely on the provisions of the Tender
    Agreement, pursuant to which among other things, certain stockholders of
    Aydin Corporation have agreed with the reporting person to vote the shares
    shown as beneficially owned in favor of the Merger and against any action
    or agreement (other than the Merger Agreement or the transactions
    contemplated thereby) that would impede, interfere with, delay, postpone
    or attempt to discourage the Merger or the Offer, all as more fully
    described herein. Capitalized terms have the meanings assigned thereto
    herein.


                                       2
<PAGE>
- ------------------
CUSIP NO. 05468110
- ------------------

- -------------------------------------------------------------------------------
  1  NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     L-3 COMMUNICATIONS CORPORATION  13-3937436
- -------------------------------------------------------------------------------
  2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a)  [ ]
                                                                       (b)  [ ]
- -------------------------------------------------------------------------------
  3  SEC USE ONLY
- -------------------------------------------------------------------------------
  4  SOURCE OF FUNDS

     WC
- -------------------------------------------------------------------------------
  5  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
- -------------------------------------------------------------------------------
  6  CITIZENSHIP OR PLACE OF ORGANIZATION

     DELAWARE
- -------------------------------------------------------------------------------
               7    SOLE VOTING POWER

                    0
 NUMBER OF  -------------------------------------------------------------------
   SHARES      8    SHARED VOTING POWER*
BENEFICIALLY 
  OWNED BY          620,700
    EACH    -------------------------------------------------------------------
 REPORTING     9    SOLE DISPOSITIVE POWER   
   PERSON                                    
    WITH            0                        
            -------------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER 

                    0                        
- -------------------------------------------------------------------------------
  11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON*

     620,700
- -------------------------------------------------------------------------------
  12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                         [ ]
- -------------------------------------------------------------------------------
  13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     11.8% (BASED ON 5,220,936 OUTSTANDING)
- -------------------------------------------------------------------------------
  14 TYPE OF REPORTING PERSON

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

 *  Beneficial ownership is based solely on the provisions of the Tender
    Agreement, pursuant to which among other things, certain stockholders of
    Aydin Corporation have agreed with the reporting person to vote the shares
    shown as beneficially owned in favor of the Merger and against any action
    or agreement (other than the Merger Agreement or the transactions
    contemplated thereby) that would impede, interfere with, delay, postpone
    or attempt to discourage the Merger or the Offer, all as more fully
    described herein. Capitalized terms have the meanings assigned thereto
    herein.


                                       3
<PAGE>
- ------------------
CUSIP NO. 05468110
- ------------------

- -------------------------------------------------------------------------------
  1  NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     L-3 COMMUNICATIONS HOLDINGS, INC.  13-3937434
- -------------------------------------------------------------------------------
  2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a)  [ ]
                                                                       (b)  [ ]
- -------------------------------------------------------------------------------
  3  SEC USE ONLY
- -------------------------------------------------------------------------------
  4  SOURCE OF FUNDS
- -------------------------------------------------------------------------------
  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

                    0
 NUMBER OF  -------------------------------------------------------------------
   SHARES      8    SHARED VOTING POWER*
BENEFICIALLY 
  OWNED BY          620,700
    EACH    -------------------------------------------------------------------
 REPORTING     9    SOLE DISPOSITIVE POWER   
   PERSON                                    
    WITH            0                        
            -------------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER 

                    0                        
- -------------------------------------------------------------------------------
  11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON*

     620,700
- -------------------------------------------------------------------------------
  12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES                                                         [ ]
- -------------------------------------------------------------------------------
  13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     11.8% (BASED ON 5,220,936 OUTSTANDING)
- -------------------------------------------------------------------------------
  14 TYPE OF REPORTING PERSON

     HC
- -------------------------------------------------------------------------------

 *  Beneficial ownership is based solely on the provisions of the Tender
    Agreement, pursuant to which among other things, certain stockholders of
    Aydin Corporation have agreed with the reporting person to vote the shares
    shown as beneficially owned in favor of the Merger and against any action
    or agreement (other than the Merger Agreement or the transactions
    contemplated thereby) that would impede, interfere with, delay, postpone
    or attempt to discourage the Merger or the Offer, all as more fully
    described herein. Capitalized terms have the meanings assigned thereto
    herein.


                                       4
<PAGE>

     This Tender Offer Statement on Schedule 14D-1 and Statement on Schedule
13D (the "Schedule 14D-1/13D") relates to the offer by Angel Acquisition
Corporation, a Delaware corporation ("Purchaser") and a wholly owned subsidiary
of L-3 Communications Corporation, a Delaware corporation ("Parent") and a
wholly owned subsidiary of L-3 Communications Holdings, Inc., a Delaware
corporation ("Holdings"), to purchase all of the outstanding shares of Common
Stock, par value $1.00 per share (the "Shares"), of Aydin Corporation, a
Delaware corporation (the "Company"), at a purchase price of $13.50 per Share,
net to the seller in cash, without interest thereon, upon the terms and subject
to the conditions set forth in the Offer to Purchase, dated as of March 5, 1999
(the "Offer to Purchase"), a copy of which is attached hereto as Exhibit
(a)(1), and in the related Letter of Transmittal (which, as amended from time
to time, together constitute the "Offer"), a copy of which is attached hereto
as Exhibit (a)(2).


ITEM 1. SECURITY AND SUBJECT COMPANY.

     (a) The name of the subject company is Aydin Corporation. The information
set forth in Section 7 ("Certain Information Concerning the Company") of the
Offer to Purchase is incorporated herein by reference.

     (b) The exact title of the class of equity securities being sought in the
Offer is Common Stock, par value $1.00 per share, of the Company. The
information set forth in the Introduction (the "Introduction") of the Offer to
Purchase is incorporated herein by reference.

     (c) The information set forth in Section 6 ("Price Range of Shares;
Dividends") of the Offer to Purchase is incorporated herein by reference.


ITEM 2. IDENTITY AND BACKGROUND.

     (a)-(d) and (g) This Statement is filed by Purchaser, Parent, and
Holdings. The information set forth in Section 8 ("Certain Information
Concerning Purchaser, Parent and Holdings") of the Offer to Purchase and in
Schedule I thereto is incorporated herein by reference.

     (e) and (f) During the last five years, neither Purchaser, Parent nor
Holdings nor, to the best knowledge of Purchaser, Parent or Holdings, any of
the persons listed in Schedule I to the Offer to Purchase (i) has been
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors) or (ii) was a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting activities subject to, federal or state
securities laws or finding any violation of such laws.


ITEM 3. PAST CONTACTS, TRANSACTIONS OR NEGOTIATIONS WITH THE SUBJECT COMPANY.

     (a) and (b) The information set forth in Section 8 ("Certain Information
Concerning Purchaser, Parent and Holdings"), Section 10 ("Background of the
Offer; Contacts with the Company") and Section 11 ("The Merger Agreement; The
Tender Agreement") of the Offer to Purchase is incorporated herein by
reference.


ITEM 4. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

     (a) and (b) The information set forth in Section 9 ("Source and Amount of
Funds") of the Offer to Purchase is incorporated herein by reference.

     (c) Not applicable.


ITEM 5. PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE BIDDER.

     (a)-(e) The information set forth in the Introduction, Section 10
("Background of the Offer; Contacts with the Company"), Section 11 ("The Merger
Agreement; The Tender Agreement"), Section 12 ("Purpose of the Offer; the
Merger; Plans for the Company") and Section 14 ("Effect of the Offer on the
Market for the Shares; Stock Exchange Listing; Exchange Act Registration") of
the Offer to Purchase is incorporated herein by reference.


                                       5
<PAGE>

     (f)-(g) The information set forth in Section 14 ("Effect of the Offer on
the Market for the Shares; Stock Exchange Listing; Exchange Act Registration")
of the Offer to Purchase is incorporated herein by reference.

     Except as contemplated by the Merger Agreement and the Tender Agreement,
neither Parent nor Purchaser has any plans or proposals which relate to or
would result in (x) the acquisition by any person of additional securities of
the Company or the disposition of securities of the Company, or (y) changes to
the Company's charter, bylaws or instruments corresponding thereto or other
action which may impede the acquisition of control of the Company by any
person.


ITEM 6. INTEREST IN SECURITIES OF THE SUBJECT COMPANY.

     (a) and (b) The information set forth in the Introduction and Section 8
("Certain Information Concerning Purchaser, Parent and Holdings") of and
Schedule I to the Offer to Purchase is incorporated herein by reference.


ITEM 7. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
        TO THE SUBJECT COMPANY'S SECURITIES

     The information set forth in the Introduction, Section 8 ("Certain
Information Concerning Purchaser, Parent and Holdings"), Section 10
("Background of the Offer; Contacts with the Company"), Section 11 ("The Merger
Agreement; The Tender Agreement") and Section 12 ("Purpose of the Offer; the
Merger; Plans for the Company") of the Offer to Purchase is incorporated herein
by reference.


ITEM 8. PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED.

     The information set forth in the Introduction and Section 17 ("Fees and
Expenses") of the Offer to Purchase is incorporated herein by reference.


ITEM 9. FINANCIAL STATEMENTS OF CERTAIN BIDDERS.

     The information set forth in Section 8 ("Certain Information Concerning
Purchaser, Parent and Holdings") of the Offer to Purchase is incorporated
herein by reference.


ITEM 10. ADDITIONAL INFORMATION.

     (a) The information set forth in Section 11 ("The Merger Agreement; The
Tender Agreement") is incorporated herein by reference.

     (b) and (c) The information set forth in Section 16 ("Certain Legal
Matters and Regulatory Approvals") of the Offer to Purchase is incorporated
herein by reference.

     (d) The information set forth in Section 14 ("Effect of the Offer on the
Market for the Shares; Stock Exchange Listing; Exchange Act Registration") and
Section 16 ("Certain Legal Matters and Regulatory Approvals") of the Offer to
Purchase is incorporated herein by reference.

     (e) None.

     (f) The information set forth in the Offer to Purchase and the Letter of
Transmittal is incorporated herein by reference.


                                       6
<PAGE>

ITEM 11. MATERIAL TO BE FILED AS EXHIBITS.

   (a)(1)    Offer to Purchase dated as of March 5, 1999.
   (a)(2)    Letter of Transmittal.
   (a)(3)    Notice of Guaranteed Delivery.
   (a)(4)    Letter from the Dealer Manager to Brokers, Dealers, Commercial 
             Banks, Trust Companies and Nominees.
   (a)(5)    Letter to clients for use by Brokers, Dealers, Commercial Banks, 
             Trust Companies and Nominees.
   (a)(6)    Guidelines for Certification of Taxpayer Identification Number on 
             Substitute Form W-9.
   (a)(7)    Summary Advertisement as published on March 5, 1999.
  *(a)(8)    Press Release issued by Parent on March 1, 1999.
   (b)       Not applicable.
 **(c)(1)    Agreement and Plan of Merger, dated as of March 1, 1999, by and 
             among L-3 Communications Corporation, Angel Acquisition 
             Corporation and Aydin Corporation.
***(c)(2)    Tender Agreement, dated as of March 1, 1999, among L-3 
             Communications Corporation and each of the Stockholders of Aydin 
             Corporation named on the signature pages thereto.
   (c)(3)    Confidentiality Agreement, dated as of October 8, 1998, by and 
             between L-3 Communications Corporation and Aydin Corporation.
   (d)       Not applicable.
   (e)       Not applicable.
   (f)       Not applicable.

- ----------
*     Incorporated by reference from Exhibit 99 of L-3 Communications Holdings,
      Inc. and L-3 Communications Corporation's Form 8-K filed on March 3,
      1999.

**    Incorporated by reference from Exhibit 2 of L-3 Communications Holdings,
      Inc. and L-3 Communications Corporation's Form 8-K filed on March 3,
      1999.

***   Incorporated by reference from Exhibit 10.1 of L-3 Communications
      Holdings, Inc. and L-3 Communications Corporation's Form 8-K filed on
      March 3, 1999.


                                       7
<PAGE>

                                   SIGNATURE


     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this Statement is true, complete and correct.
 


                                   L-3 COMMUNICATIONS HOLDINGS, INC.


                                   By: /S/ CHRISTOPHER C. CAMBRIA
                                       ----------------------------------------
                                       Name: Christopher C. Cambria
                                       Title: Vice President and General
                                              Counsel
  

                                   L-3 COMMUNICATIONS CORPORATION


                                   BY: /S/ CHRISTOPHER C. CAMBRIA
                                       ----------------------------------------
                                       Name: Christopher C. Cambria
                                       Title: Vice President, General Counsel
                                              and Secretary


                                   ANGEL ACQUISITION CORPORATION


                                   By: /S/ CHRISTOPHER C. CAMBRIA
                                       ----------------------------------------
                                       Name: Christopher C. Cambria
                                       Title: President and Secretary



Date: March 5, 1999

                                       8
<PAGE>

                                EXHIBIT INDEX




 EXHIBIT 
   NO.                         DESCRIPTION                                PAGE
- ---------   ---------------------------------------------------------     ----
   (a)(1)   Offer to Purchase dated as of March 5, 1999.
   (a)(2)   Letter of Transmittal.
   (a)(3)   Notice of Guaranteed Delivery.
   (a)(4)   Letter from the Dealer Manager to Brokers, Dealers, 
            Commercial Banks, Trust Companies and Nominees.
   (a)(5)   Letter to clients for use by Brokers, Dealers, 
            Commercial Banks, Trust Companies and Nominees.
   (a)(6)   Guidelines for Certification of Taxpayer Identification 
            Number on Substitute Form W-9.
   (a)(7)   Summary Advertisement as published on March 5, 1999. 
  *(a)(8)   Press Release issued by Parent on March 1, 1999.
   (b)      Not applicable.
 **(c)(1)   Agreement and Plan of Merger, dated as of March 1, 1999, 
            by and among L-3 Communications Corporation, Angel 
            Acquisition Corporation and Aydin Corporation.
***(c)(2)   Tender Agreement, dated as of March 1, 1999, among 
            L-3 Communications Corporation and each of the 
            Stockholders of Aydin Corporation named on the 
            signature pages thereto.
   (c)(3)   Confidentiality Agreement, dated as of October 8, 1998, 
            by and between L-3 Communications Corporation and 
            Aydin Corporation.
   (d)      Not applicable.
   (e)      Not applicable.
   (f)      Not applicable.

- ----------
*     Incorporated by reference from Exhibit 99 of L-3 Communications Holdings,
      Inc. and L-3 Communications Corporation's Form 8-K filed on March 3,
      1999.

**    Incorporated by reference from Exhibit 2 of L-3 Communications Holdings,
      Inc. and L-3 Communications Corporation's Form 8-K filed on March 3,
      1999.

***   Incorporated by reference from Exhibit 10.1 of L-3 Communications
      Holdings, Inc. and L-3 Communications Corporation's Form 8-K filed on
      March 3, 1999.


                                       9

<PAGE>
                          OFFER TO PURCHASE FOR CASH
                    ALL OUTSTANDING SHARES OF COMMON STOCK
                                      OF

                               AYDIN CORPORATION

                                      AT
                             $13.50 NET PER SHARE
                                      BY

                         ANGEL ACQUISITION CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                         L-3 COMMUNICATIONS CORPORATION
                          A WHOLLY OWNED SUBSIDIARY OF

                       L-3 COMMUNICATIONS HOLDINGS, INC.

- -------------------------------------------------------------------------------
    THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK
     CITY TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE OFFER IS EXTENDED.
- -------------------------------------------------------------------------------

     THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE BEING VALIDLY
TENDERED AND NOT PROPERLY WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER A
NUMBER OF SHARES OF COMMON STOCK, PAR VALUE $1.00 PER SHARE (THE "SHARES"), OF
AYDIN CORPORATION (THE "COMPANY") WHICH, TOGETHER WITH ANY SHARES OWNED BY L-3
COMMUNICATIONS HOLDINGS, INC., L-3 COMMUNICATIONS CORPORATION ("PARENT") OR
ANGEL ACQUISITION CORPORATION ("PURCHASER") OR ANY CONTROLLED AFFILIATE
THEREOF, CONSTITUTES AT LEAST A MAJORITY OF THE SHARES OUTSTANDING ON A FULLY
DILUTED BASIS AS OF THE EXPIRATION OF THE OFFER AND (II) THE EXPIRATION OR
TERMINATION OF ANY WAITING PERIODS UNDER THE HART-SCOTT-RODINO ANTITRUST
IMPROVEMENTS ACT OF 1976, AS AMENDED. THE OFFER IS ALSO SUBJECT TO OTHER TERMS
AND CONDITIONS. SEE THE INTRODUCTION AND SECTIONS 1 AND 15.

     THE BOARD OF DIRECTORS OF THE COMPANY HAS UNANIMOUSLY DETERMINED THAT THE
MERGER AGREEMENT AND THE TRANSACTIONS CONTEMPLATED THEREBY, INCLUDING EACH OF
THE OFFER AND THE MERGER, ARE ADVISABLE AND FAIR TO, AND IN THE BEST INTERESTS
OF, THE HOLDERS OF SHARES AND RECOMMENDS THAT HOLDERS OF THE SHARES ACCEPT THE
OFFER AND TENDER THEIR SHARES TO PURCHASER.

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

                                   IMPORTANT

     Any stockholder desiring to tender all or any portion of such
stockholder's Shares should either (1) complete and sign the enclosed Letter of
Transmittal (or a facsimile thereof) in accordance with the instructions in the
Letter of Transmittal, mail or deliver the Letter of Transmittal (or such
facsimile) and any other required documents to ChaseMellon Shareholder
Services, L.L.C. (the "Depositary"), and either deliver the certificates
evidencing the tendered Shares and any other required documents to the
Depositary or tender such Shares pursuant to the procedure for book-entry
transfer set forth in Section 3 or (2) request such stockholder's broker,
dealer, commercial bank, trust company or other nominee to effect the
transaction for such stockholder. Stockholders having Shares registered in the
name of a broker, dealer, commercial bank, trust company or other nominee must
contact such broker, dealer, commercial bank, trust company or other nominee if
they desire to tender Shares so registered.


     A STOCKHOLDER WHO DESIRES TO TENDER SHARES AND WHOSE CERTIFICATES
REPRESENTING SUCH SHARES ARE NOT IMMEDIATELY AVAILABLE, OR WHO CANNOT COMPLY
WITH THE PROCEDURE FOR BOOK-ENTRY TRANSFER ON A TIMELY BASIS, MAY TENDER SUCH
SHARES BY FOLLOWING THE PROCEDURES FOR GUARANTEED DELIVERY SET FORTH IN SECTION
3.

     Questions and requests for assistance may be directed to Lehman Brothers
Inc. ("Lehman Brothers" or the "Dealer Manager") or to D.F. King & Co., Inc.
(the "Information Agent") at their respective addresses and telephone numbers
set forth on the back cover of this Offer to Purchase. Additional copies of
this Offer to Purchase, the Letter of Transmittal and the Notice of Guaranteed
Delivery may also be obtained from the Information Agent or from brokers,
dealers, commercial banks or trust companies.

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

                     THE DEALER MANAGER FOR THE OFFER IS:

                                LEHMAN BROTHERS

March 5, 1999
<PAGE>

                               TABLE OF CONTENTS

                                                                        PAGE
                                                                        ----
INTRODUCTION ..........................................................   1
THE TENDER OFFER ......................................................   3
    1. Terms of the Offer; Expiration Date ............................   3
    2. Acceptance for Payment and Payment for Shares ..................   4
    3. Procedure for Tendering Shares .................................   5
    4. Withdrawal Rights ..............................................   8
    5. Certain Federal Income Tax Consequences ........................   8
    6. Price Range of Shares; Dividends ...............................   9
    7. Certain Information Concerning the Company .....................   9
    8. Certain Information Concerning Purchaser, Parent and Holdings ..  12
    9. Source and Amount of Funds .....................................  14
   10. Background of the Offer; Contacts with the Company .............  14
   11. The Merger Agreement; The Tender Agreement .....................  16
   12. Purpose of the Offer; the Merger; Plans for the Company ........  24
   13. Dividends and Distributions ....................................  26
   14. Effect of the Offer on the Market for the Shares; Stock 
       Exchange Listing; Exchange Act Registration ....................  27
   15. Certain Conditions of the Offer ................................  28
   16. Certain Legal Matters and Regulatory Approvals .................  29
   17. Fees and Expenses ..............................................  31
   18. Miscellaneous ..................................................  31
   SCHEDULE I
    CERTAIN INFORMATION REGARDING THE DIRECTORS AND EXECUTIVE
    OFFICERS OF PURCHASER, PARENT AND HOLDINGS ........................  I-1

                                       i
<PAGE>

To the Stockholders of Aydin Corporation:


                                 INTRODUCTION

     Angel Acquisition Corporation, a Delaware corporation ("Purchaser") and a
wholly owned subsidiary of L-3 Communications Corporation, a Delaware
corporation ("Parent") and a wholly owned subsidiary of L-3 Communications
Holdings, Inc., a Delaware corporation ("Holdings"), hereby offers to purchase
all of the outstanding shares of Common Stock, par value $1.00 per share (the
"Shares"), of Aydin Corporation, a Delaware corporation (the "Company"), at a
purchase price of $13.50 per Share, net to the seller in cash, without interest
thereon, upon the terms and subject to the conditions set forth in this Offer
to Purchase and in the related Letter of Transmittal (which, as amended from
time to time, together constitute the "Offer").

     Tendering stockholders will not be obligated to pay brokerage fees or
commissions or, subject to Instruction 6 of the Letter of Transmittal, stock
transfer taxes on the transfer and sale of Shares pursuant to the Offer.
Purchaser will pay all fees and expenses of Lehman Brothers Inc., which is
acting as Dealer Manager for the Offer ("Lehman Brothers" or the "Dealer
Manager"), ChaseMellon Shareholder Services, L.L.C., which is acting as the
Depositary (the "Depositary"), and D.F. King & Co., Inc., which is acting as
the Information Agent (the "Information Agent"), incurred in connection with
the Offer. See Section 17.

     THE BOARD OF DIRECTORS OF THE COMPANY (THE "COMPANY BOARD"), AT A MEETING
DULY CALLED AND HELD ON FEBRUARY 23, 1999, WHICH WAS ADJOURNED AND RECONVENED
ON MARCH 1, 1999, HAS UNANIMOUSLY (A) DETERMINED THAT THE MERGER AGREEMENT (AS
DEFINED BELOW) AND THE TRANSACTIONS CONTEMPLATED THEREBY, INCLUDING THE OFFER
AND THE MERGER (AS DEFINED BELOW), ARE ADVISABLE AND FAIR TO, AND IN THE BEST
INTERESTS OF THE HOLDERS OF THE SHARES, (B) EXEMPTED THE OFFER, THE MERGER, THE
MERGER AGREEMENT AND THE TENDER AGREEMENT (AS DEFINED BELOW) AND THE
TRANSACTIONS CONTEMPLATED THEREBY SO AS TO RENDER SECTION 203 OF THE DELAWARE
GENERAL CORPORATION LAW (THE "DGCL") INAPPLICABLE THERETO, (C) DECLARED THE
MERGER TO BE ADVISABLE AND DIRECTED THAT THE MERGER BE SUBMITTED FOR
CONSIDERATION AT A SPECIAL MEETING OF THE STOCKHOLDERS OF THE COMPANY AND (D)
RESOLVED TO RECOMMEND THAT THE STOCKHOLDERS OF THE COMPANY ACCEPT THE OFFER,
TENDER THEIR SHARES TO PURCHASER THEREUNDER AND APPROVED AND ADOPTED THE MERGER
AGREEMENT.

     The Company Board has received the written opinion of
PricewaterhouseCoopers Securities LLC ("PricewaterhouseCoopers") financial
advisor to the Company, that the consideration to be received by the holders of
Shares pursuant to the Offer and the Merger is fair to such stockholders from a
financial point of view. A copy of the opinion of PricewaterhouseCoopers is
attached to the Company's Solicitation/Recommendation Statement on Schedule
14D-9 (the "Schedule 14D-9") which is being distributed to the stockholders of
the Company. The PricewaterhouseCoopers opinion should be read in its entirety
for the assumptions made, the procedures followed, the matters considered and
the limits of the review made by PricewaterhouseCoopers in connection with such
opinion. The PricewaterhouseCoopers opinion was prepared for the Company Board
and does not constitute a recommendation to any stockholder as to whether to
tender in the Offer. PricewaterhouseCoopers was not retained as an advisor or
agent to the Company's stockholders.

     THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE BEING VALIDLY
TENDERED AND NOT WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER AT LEAST A
MAJORITY OF THE SHARES OUTSTANDING ON A FULLY DILUTED BASIS AS OF THE
EXPIRATION OF THE OFFER (THE "MINIMUM CONDITION") AND (II) THE EXPIRATION OR
TERMINATION PRIOR TO THE EXPIRATION OF THE OFFER OF ANY APPLICABLE WAITING
PERIODS UNDER THE HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976, AS
AMENDED (THE "HSR ACT"). SEE SECTIONS 1 AND 15. IF PURCHASER PURCHASES AT LEAST
THAT NUMBER OF SHARES NEEDED TO SATISFY THE MINIMUM CONDITION, IT WILL BE ABLE
TO EFFECT THE MERGER WITHOUT THE AFFIRMATIVE VOTE OF ANY OTHER STOCKHOLDER OF
THE COMPANY. SEE SECTION 12.

     The Offer is being made pursuant to an Agreement and Plan of Merger, dated
as of March 1, 1999 (the "Merger Agreement"), among Parent, Purchaser and the
Company. The Merger Agreement provides, among other things, for the making of
the Offer by Purchaser, and further provides that,
<PAGE>

following the completion of the Offer, upon the terms and subject to the
conditions of the Merger Agreement and in accordance with the DGCL, Purchaser
will be merged with and into the Company (the "Merger"). Following the Merger,
the Company will continue as the surviving corporation (the "Surviving
Corporation") and become a wholly owned subsidiary of Parent, and the separate
corporate existence of Purchaser will cease.

     Certain stockholders of the Company representing, as of the date hereof,
approximately 11.8% of the issued and outstanding Shares of the Company (the
"Stockholders") have contractually agreed with Parent, among other things, to
tender their Shares in the Offer and otherwise support the transaction. See
Section 11 for a discussion of the Tender Agreement, dated as of March 1, 1999,
among Parent and the Stockholders (the "Tender Agreement").

     In accordance with the Merger Agreement, the Company agrees, if and to the
extent permitted by law, to duly convene a meeting of its stockholders as soon
as practicable following consummation of the Offer for the purpose of
considering and taking action on the Merger Agreement and the transactions
contemplated thereby and to include in the proxy statement for such meeting the
unanimous recommendation of the Company Board that the stockholders of the
Company vote in favor of the Merger Agreement and the transactions contemplated
thereby and to otherwise use its reasonable efforts to obtain the necessary
approval of the Merger Agreement and the transactions contemplated thereby. See
Section 11.

     At the effective time of the Merger (the "Effective Time"), each Share
issued and outstanding immediately prior to the Effective Time (other than each
Share owned by Parent, Purchaser or any other wholly owned subsidiary of Parent
and any Shares issued and outstanding immediately prior to the Effective Time
and held by stockholders who have not voted in favor of or consented to the
Merger in writing and who have demanded appraisal of their Shares in accordance
with Section 262 of the DGCL (the "Dissenting Shares")) will, by virtue of the
Merger and without any action on the part of the holders thereof, be converted
into and become the right to receive $13.50 in cash, or any higher price that
may be paid pursuant to the Offer (the "Merger Consideration"), without
interest, less any required withholding taxes.

     The Company has represented to Purchaser and Parent that as of March 1,
1999, there were 5,220,936 Shares issued and outstanding, and 632,550 Shares
reserved for issuance upon the exercise of outstanding stock options, warrants
and other stock rights. Based upon the foregoing, Purchaser and Parent believe
that 2,926,744 Shares would constitute a majority of the Shares and would
therefore equal the Minimum Condition.

     The Company has advised Purchaser and Parent that, to the knowledge of the
Company, all the directors and officers of the Company intend to tender their
Shares pursuant to the Offer.

     The Merger Agreement is more fully described in Section 11. Certain
federal income tax consequences of the sale of the Shares pursuant to the Offer
and the exchange of Shares for the Merger Consideration pursuant to the Merger
are described in Section 5.

     THIS OFFER TO PURCHASE AND THE RELATED LETTER OF TRANSMITTAL CONTAIN
IMPORTANT INFORMATION WHICH SHOULD BE READ BEFORE ANY DECISION IS MADE WITH
RESPECT TO THE OFFER.


                                       2
<PAGE>

                               THE TENDER OFFER

     1. TERMS OF THE OFFER; EXPIRATION DATE. Upon the terms and subject to the
conditions of the Offer (including if the Offer is extended or amended, the
terms and conditions of such extension or amendment), Purchaser will accept for
payment, purchase and pay for all Shares validly tendered on or prior to the
Expiration Date and not properly withdrawn as permitted by Section 4. The term
"Expiration Date" means 12:00 Midnight, New York City time, on Thursday, April
1, 1999, unless and until Purchaser, in its sole discretion (but subject to the
terms and conditions of the Merger Agreement), shall have extended the period
during which the Offer is open, in which event the term "Expiration Date" shall
mean the latest time and date at which the Offer, as so extended by Purchaser,
shall expire.

     THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, SATISFACTION OF THE
MINIMUM CONDITION AND THE EXPIRATION OR TERMINATION OF ANY APPLICABLE WAITING
PERIODS UNDER THE HSR ACT. SEE SECTION 15, WHICH SETS FORTH IN FULL THE
CONDITIONS TO THE OFFER (THE "OFFER CONDITIONS"). SUBJECT TO THE PROVISIONS OF
THE MERGER AGREEMENT AND THE APPLICABLE RULES AND REGULATIONS OF THE SECURITIES
AND EXCHANGE COMMISSION (THE "COMMISSION"), PURCHASER RESERVES THE RIGHT, IN
ITS SOLE DISCRETION, TO WAIVE ANY OR ALL CONDITIONS TO THE OFFER (OTHER THAN
THE MINIMUM CONDITION) AND TO MAKE ANY OTHER CHANGES IN THE TERMS AND
CONDITIONS OF THE OFFER. SUBJECT TO THE PROVISIONS OF THE MERGER AGREEMENT AND
THE APPLICABLE RULES AND REGULATIONS OF THE COMMISSION, IF BY THE EXPIRATION
DATE ANY OR ALL OF SUCH OFFER CONDITIONS HAVE NOT BEEN SATISFIED, PURCHASER
RESERVES THE RIGHT (BUT SHALL NOT BE OBLIGATED) TO (I) TERMINATE THE OFFER AND
RETURN ALL TENDERED SHARES TO TENDERING STOCKHOLDERS, (II) WAIVE SUCH
UNSATISFIED CONDITIONS (OTHER THAN THE MINIMUM CONDITION) AND PURCHASE ALL
SHARES VALIDLY TENDERED OR (III) EXTEND THE OFFER AND, SUBJECT TO THE TERMS OF
THE OFFER (INCLUDING THE RIGHTS OF STOCKHOLDERS TO WITHDRAW THEIR SHARES),
RETAIN THE SHARES WHICH HAVE BEEN TENDERED, UNTIL THE OFFER, AS SO EXTENDED BY
PURCHASER, SHALL EXPIRE.

     Subject to the provisions of the Merger Agreement and the applicable rules
and regulations of the Commission, Purchaser expressly reserves the right, in
its sole discretion, at any time and from time to time, and regardless of
whether or not any of the Offer Conditions set forth in Section 15 shall have
occurred or shall have been determined by Purchaser to have occurred, to (i)
extend the period of time during which the Offer is open and thereby delay
acceptance for payment of, and the payment for, any Shares, by giving oral or
written notice of such extension to the Depositary and (ii) amend the Offer in
any respect by giving oral or written notice of such amendment to the
Depositary. Under the terms of the Merger Agreement, Purchaser expressly
reserves the right, in its sole discretion, to waive any such condition and
make any other changes in the terms and conditions of the Offer not
inconsistent with the provisions of Merger Agreement, provided that, Purchaser
shall not amend or waive the Minimum Condition and shall not decrease the Offer
price or decrease the number of Shares sought, or amend any other condition of
the Offer in any manner adverse to the holders of the Shares without the prior
written consent of the Company (such consent to be authorized by the Company
Board or a duly authorized committee thereof). The rights reserved by Purchaser
in this paragraph are in addition to Purchaser's rights to terminate the Offer
upon the failure of the Offer Conditions in Section 15 to be satisfied on the
Expiration Date. Notwithstanding the foregoing, the Purchaser will, and Parent
agrees to cause the Purchaser to, extend the Offer at any time up to May 10,
1999 for one or more periods of not more than 10 business days, or, if longer,
for any period required by any rule, regulation, interpretation or position of
the Commission or the staff thereof aplicable to the Offer, if at the initial
expiration date of the Offer, or any extension thereof, any condition to the
Offer (other than the Minimum Condition) is not satisfied or waived. In
addition, the Offer price may be increased and the Offer may be extended to the
extent required by law in connection with such increase in each case without
the consent of the Company.

     Any extension, delay, termination, waiver or amendment will be followed as
promptly as practicable by public announcement thereof, and such announcement
in the case of an extension will be made in accordance with Rule 14e-1(d) under
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), no later
than 9:00 A.M., New York City time, on the next business day after the
previously scheduled Expiration Date. Without limiting the manner in which
Purchaser may choose to make any public announcement, except as provided by
applicable law (including Rules 14d-4(c) and 14d-6(d) under the Exchange Act,
which require that material changes be promptly disseminated to holders of
Shares), Purchaser shall have no obligation to publish, advertise or otherwise
communicate any such public announcement other than by issuing a release to the
Dow Jones News Service.


                                       3
<PAGE>

     If Purchaser makes a material change in the terms of the Offer or if it
waives a material condition of the Offer, Purchaser will disseminate additional
tender offer materials and extend the Offer to the extent required by Rules
14d-4(c), 14d-6(d) and 14e-1 under the Exchange Act. The minimum period during
which an offer must remain open following material changes in the terms of the
offer, other than a change in price or a change in the percentage of securities
sought, will depend upon the facts and circumstances, including the
materiality, of the changes. With respect to a change in price or, subject to
certain limitations, a change in the percentage of securities sought, a minimum
10 business day period from the day of such change is generally required to
allow for adequate dissemination to stockholders. For purposes of the Offer, a
"business day" means any day other than a Saturday, Sunday, or a federal
holiday and consists of the time period from 12:01 A.M. through 12:00 Midnight,
New York City time.

     The Company has provided Purchaser with the Company's stockholder list and
security position listings for the purpose of disseminating the Offer to
holders of Shares. This Offer to Purchase and the related Letter of Transmittal
and other relevant materials will be mailed by Purchaser to record holders of
Shares and furnished to brokers, dealers, commercial banks, trust companies and
similar persons whose names, or the names of whose nominees, appear on the
stockholder list or, if applicable, who are listed as participants in a
clearing agency's security position listing, for subsequent transmittal to
beneficial owners of Shares.

     2. ACCEPTANCE FOR PAYMENT AND PAYMENT FOR SHARES. The obligation of
Purchaser to accept for payment Shares tendered shall be subject to the
satisfaction of the Offer Conditions. Purchaser covenants and agrees that,
subject to the terms and conditions of the Merger Agreement, including the
Offer Conditions, it will accept for payment and pay for Shares validly
tendered and not withdrawn pursuant to the Offer as promptly as reasonably
practicable. In addition, subject to the applicable rules of the Commission,
Purchaser expressly reserves the right to delay acceptance for payment of or
payment for Shares pending receipt of any other regulatory approvals specified
in Section 16. Any such delays will be effected in compliance with Rule
14e-1(c) under the Exchange Act.

     For information with respect to approvals required to be obtained prior to
the consummation of the Offer, including the HSR Act, see Section 16.

     In all cases, payment for Shares tendered and accepted for payment
pursuant to the Offer will be made only after timely receipt by the Depositary
of (i) certificates representing such Shares ("Share Certificates") or timely
confirmation (a "Book-Entry Confirmation") of a book-entry transfer of such
Shares into the Depositary's account at the Depository Trust Company (the
"Book-Entry Transfer Facility") pursuant to the procedures set forth in Section
3, (ii) the Letter of Transmittal (or a facsimile thereof), properly completed
and duly executed, with any required signature guarantees, or an Agent's
Message (as defined below) in connection with a book-entry transfer and (iii)
any other documents required by the Letter of Transmittal.

     The term "Agent's Message" means a message transmitted by the Book-Entry
Transfer Facility to and received by the Depositary and forming a part of a
Book-Entry Confirmation, which states that the Book-Entry Transfer Facility has
received an express acknowledgment from the participant in the Book-Entry
Transfer Facility tendering the Shares that such participant has received and
agrees to be bound by the terms of the Letter of Transmittal and that Purchaser
may enforce such agreement against such participant.

     For purposes of the Offer, Purchaser will be deemed to have accepted for
payment (and thereby purchased) Shares validly tendered and not properly
withdrawn as, if and when Purchaser gives oral or written notice to the
Depositary of Purchaser's acceptance for payment of such Shares pursuant to the
Offer. Upon the terms and subject to the conditions of the Offer, payment for
Shares accepted for payment pursuant to the Offer will be made by deposit of
the purchase price therefor with the Depositary, which will act as agent for
tendering stockholders for the purpose of receiving payments from Purchaser and
transmitting such payments to stockholders whose Shares have been accepted for
payment. UNDER NO CIRCUMSTANCES WILL INTEREST ON THE PURCHASE PRICE FOR SHARES
BE PAID OR ACCRUED FOR THE BENEFIT OF HOLDERS OF SHARE CERTIFICATES ON THE
PRICE PER SHARE PAYABLE UPON THE SURRENDER OF THE SHARE CERTIFICATES,
REGARDLESS OF ANY EXTENSION OF THE OFFER OR ANY DELAY IN MAKING SUCH PAYMENT.
If for any reason


                                       4
<PAGE>

acceptance for payment of or payment for any Shares tendered pursuant to the
Offer is delayed or Purchaser is unable to accept for payment or pay for Shares
tendered pursuant to the Offer, then without prejudice to Purchaser's rights
set forth herein, the Depositary may nevertheless, on behalf of Purchaser and
subject to Rule 14e-1(c) under the Exchange Act, retain tendered Shares and
such Shares may not be withdrawn except to the extent that the tendering
stockholder is entitled to and duly exercises withdrawal rights as described in
Section 4.

     If any tendered Shares are not accepted for payment for any reason or if
Share Certificates are submitted for more Shares than are tendered, Share
Certificates evidencing unpurchased or untendered Shares will be returned
without expense to the tendering stockholder (or, in the case of Shares
tendered by book-entry transfer into the Depositary's account at the Book-Entry
Transfer Facility pursuant to the procedures set forth in Section 3, such
Shares will be credited to an account maintained at the Book-Entry Transfer
Facility), as promptly as practicable following the expiration, termination or
withdrawal of the Offer.

     Purchaser reserves the right to transfer or assign, in whole or from time
to time in part, to one or more of its affiliates the right to purchase all or
any portion of the Shares tendered pursuant to the Offer, but any such transfer
or assignment will not relieve Purchaser of its obligations under the Offer and
will in no way prejudice the rights of tendering stockholders to receive
payment for Shares validly tendered and accepted for payment pursuant to the
Offer.

     3. PROCEDURE FOR TENDERING SHARES. Valid Tenders. Except as set forth
below, in order for Shares to be validly tendered pursuant to the Offer, the
Letter of Transmittal (or a facsimile thereof), properly completed and duly
executed, together with any required signature guarantees, or an Agent's
Message in connection with a book-entry delivery of Shares, and any other
documents required by the Letter of Transmittal, must be received by the
Depositary at one of the addresses set forth on the back cover of this Offer to
Purchase on or prior to the Expiration Date and either (i) Share Certificates
evidencing tendered Shares must be received by the Depositary at such address
or such Shares must be tendered pursuant to the procedure for book-entry
transfer described below and a Book-Entry Confirmation must be received by the
Depositary, in each case on or prior to the Expiration Date or (ii) the
guaranteed delivery procedures described below must be complied with. If Share
Certificates are forwarded separately to the Depositary, a properly completed
and duly executed Letter of Transmittal (or a facsimile thereof) must accompany
each such delivery.

     Book-Entry Transfer. The Depositary will make a request to establish
accounts with respect to the Shares at the Book-Entry Transfer Facility for
purposes of the Offer within two business days after the date of this Offer to
Purchase. Any financial institution that is a participant in the system of the
Book-Entry Transfer Facility may make book-entry delivery of Shares by causing
the Book-Entry Transfer Facility to transfer such Shares into the Depositary's
account at the Book-Entry Transfer Facility in accordance with the Book-Entry
Transfer Facility's procedures for such transfer. However, although delivery of
Shares may be effected through book-entry transfer at the Book-Entry Transfer
Facility, the Letter of Transmittal (or a facsimile thereof), properly
completed and duly executed, together with any required signature guarantees,
or an Agent's Message in connection with a book-entry transfer, and any other
documents required by the Letter of Transmittal, must in any case be received
by the Depositary at one of its addresses set forth on the back cover of this
Offer to Purchase on or prior to the Expiration Date, or the guaranteed
delivery procedures described below must be complied with.

     DELIVERY OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY IN ACCORDANCE
WITH THE BOOK-ENTRY TRANSFER FACILITY'S PROCEDURES DOES NOT CONSTITUTE DELIVERY
TO THE DEPOSITARY.

     THE METHOD OF DELIVERY OF SHARE CERTIFICATES AND ALL OTHER REQUIRED
DOCUMENTS, INCLUDING DELIVERY THROUGH THE BOOK-ENTRY TRANSFER FACILITY, IS AT
THE OPTION AND RISK OF THE TENDERING STOCKHOLDER AND THE DELIVERY WILL BE
DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY (INCLUDING, IN THE
CASE OF BOOK-ENTRY TRANSFER, BY BOOK-ENTRY CONFIRMATION). IF DELIVERY IS BY
MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS
RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY
DELIVERY.


                                       5
<PAGE>

     Signature Guarantees. Except as otherwise provided below, all signatures
on a Letter of Transmittal must be guaranteed by a financial institution
(including most banks, savings and loan associations and brokerage houses)
which is a member of a recognized Medallion Program approved by The Securities
Transfer Association Inc., including the Securities Transfer Agents Medallion
Program (STAMP), the Stock Exchange Medallion Program (SEMP) and the New York
Stock Exchange, Inc. Medallion Signature Program (MSP) (any such financial
institution, an "Eligible Institution"). Signatures on a Letter of Transmittal
need not be guaranteed (a) if the Letter of Transmittal is signed by the
registered holder of the Shares tendered and such holder has not completed the
box entitled "Special Payment Instructions" or "Special Delivery Instructions"
on the Letter of Transmittal or (b) if such Shares are tendered for the account
of an Eligible Institution. See Instructions 1 and 5 of the Letter of
Transmittal.

     If the Share Certificates are registered in the name of a person other
than the signer of the Letter of Transmittal, or if payment is to be made, or
Share Certificates not accepted for payment or not tendered are to be returned,
to a person other than the registered holder, the Share Certificates must be
endorsed or accompanied by appropriate stock powers, in either case, signed
exactly as the name of the registered holder appears on such certificates, with
the signatures on such certificates or stock powers guaranteed as aforesaid.
See Instructions 1 and 5 of the Letter of Transmittal.

     If Share Certificates are forwarded separately to the Depositary, a
properly completed and duly executed Letter of Transmittal (or a facsimile
thereof) and any other documents required by the Letter of Transmittal must
accompany each such delivery.

     Guaranteed Delivery. If a stockholder desires to tender Shares pursuant to
the Offer and such stockholder's Share Certificates are not immediately
available, or such stockholder cannot deliver the Share Certificates and all
other required documents to the Depositary on or prior to the Expiration Date,
or such stockholder cannot complete the procedure for delivery by book-entry
transfer on a timely basis, such Shares may nevertheless be tendered, provided
that all of the following conditions are satisfied:

     (i)   such tender is made by or through an Eligible Institution;

     (ii)  a properly completed and duly executed Notice of Guaranteed
           Delivery substantially in the form made available by Purchaser is
           received by the Depositary as provided below on or prior to the
           Expiration Date; and

     (iii) the Share Certificates (or a Book-Entry Confirmation), representing
           all tendered Shares in proper form for transfer, together with the
           Letter of Transmittal (or a facsimile thereof) properly completed
           and duly executed, with any required signature guarantees (or, in
           the case of a book-entry transfer, an Agent's Message) and any other
           documents required by the Letter of Transmittal are received by the
           Depositary within three NYSE trading days after the date of
           execution of such Notice of Guaranteed Delivery.

     The Notice of Guaranteed Delivery may be delivered by hand or transmitted
by telegram, telex, facsimile transmission or mail to the Depositary and must
include a guarantee by an Eligible Institution and a representation that the
stockholder owns the Shares tendered within the meaning of, and that the tender
of the Shares effected thereby complies with, Rule 14e-4 under the Exchange
Act, each in the form set forth in such Notice of Guaranteed Delivery.

     Notwithstanding any other provision hereof, payment for Shares accepted
for payment pursuant to the Offer will in all cases be made only after timely
receipt by the Depositary of Share Certificates for, or of Book-Entry
Confirmation with respect to, such Shares, a properly completed and duly
executed Letter of Transmittal (or a facsimile thereof), together with any
required signature guarantees (or, in the case of a book-entry transfer, an
Agent's Message), and any other documents required by the Letter of
Transmittal. Accordingly, payment might not be made to all tendering
stockholders at the same time and will depend upon when Share Certificates or
Book-Entry Confirmations of such Shares are received into the Depositary's
account at the Book-Entry Transfer Facility.

     Appointment as Proxy. By executing the Letter of Transmittal, a tendering
stockholder irrevocably appoints designees of Purchaser and each of them as
such stockholder's attorneys-in-fact and proxies, with


                                       6
<PAGE>

full power of substitution, in the manner set forth in the Letter of
Transmittal, to the full extent of such stockholder's rights with respect to
the Shares tendered by such stockholder and accepted for payment by Purchaser
(and with respect to any and all other Shares, other securities or rights
issued or issuable in respect of such Shares on or after the date hereof). All
such powers of attorney and proxies shall be considered irrevocable and coupled
with an interest in the tendered Shares. Such appointment will be effective
when, and only to the extent that, Purchaser accepts such Shares for payment.
Upon such acceptance for payment, all prior powers of attorney and proxies
given by such stockholder with respect to such Shares will be revoked without
further action, and no subsequent powers of attorney and proxies may be given
nor any subsequent written consents executed (and, if given or executed, will
not be deemed effective). The designees of Purchaser will, with respect to the
Shares for which such appointment is effective, be empowered to exercise all
voting and other rights of such stockholder as they in their sole discretion
may deem proper at any annual or special meeting of the Company's stockholders
or any adjournment or postponement thereof, by written consent in lieu of any
such meeting or otherwise. Purchaser reserves the right to require that, in
order for Shares to be deemed validly tendered, immediately upon Purchaser's
payment for such Shares, Purchaser must be able to exercise full voting rights
with respect to such Shares and other securities, including voting at any
meeting of stockholders.


     Determination of Validity. All questions as to the validity, form,
eligibility (including time of receipt) and acceptance for payment of any
tender of Shares will be determined by Purchaser in its sole discretion, which
determination shall be final and binding on all parties. Purchaser reserves the
absolute right to reject any and all tenders determined by it not to be in
proper form or the acceptance for payment of which may, in the opinion of its
counsel, be unlawful. Purchaser also reserves the absolute right to waive any
defect or irregularity in any tender of Shares of any particular stockholder
whether or not similar defects or irregularities are waived in the case of
other stockholders. No tender of Shares will be deemed to have been validly
made until all defects and irregularities have been cured or waived. None of
Purchaser, Parent, any of their affiliates or assigns, the Dealer Manager, the
Depositary, the Information Agent or any other person will be under any duty to
give notification of any defects or irregularities in tenders or incur any
liability for failure to give any such notification. Purchaser's interpretation
of the terms and conditions of the Offer (including the Letter of Transmittal
and the instructions thereto) will be final and binding.


     Backup Federal Income Tax Withholding and Substitute Form W-9. Under the
"backup withholding" provisions of federal income tax law, the Depositary may
be required to withhold 31% of the amount of any payments of cash pursuant to
the Offer. In order to avoid backup withholding, each stockholder surrendering
Shares in the Offer must, unless an exemption applies, provide the payor of
such cash with such stockholder's correct taxpayer identification number
("TIN") on a substitute Form W-9 and certify, under penalties of perjury, that
such TIN is correct and that such stockholder is not subject to backup
withholding. If a stockholder does not provide its correct TIN or fails to
provide the certifications described above, the Internal Revenue Service
("IRS") may impose a penalty on such stockholder and payment of cash to such
stockholder pursuant to the Offer may be subject to backup withholding of 31%.
All stockholders surrendering Shares pursuant to the Offer should complete and
sign the substitute Form W-9 included in the Letter of Transmittal to provide
the information and certification necessary to avoid backup withholding (unless
an applicable exemption exists and is proved in a manner satisfactory to the
Depositary). Certain stockholders (including among others all corporations and
certain foreign individuals and entities) are not subject to backup
withholding. Noncorporate foreign stockholders should complete and sign a Form
W-8, Certificate of Foreign Status, a copy of which may be obtained from the
Depositary, in order to avoid backup withholding. See Instruction 9 of the
Letter of Transmittal.


     Other Requirements. Purchaser's acceptance for payment of Shares tendered
pursuant to any of the procedures described above will constitute a binding
agreement between the tendering stockholder and Purchaser upon the terms and
subject to the conditions of the Offer, including the tendering stockholder's
representation and warranty that the stockholder is the holder of the Shares
within the meaning of, and that the tender of the Shares complies with, Rule
14e-4(a)(4) under the Exchange Act.


                                       7
<PAGE>

     4. WITHDRAWAL RIGHTS. Tenders of Shares made pursuant to the Offer may be
withdrawn at any time prior to the Expiration Date. Thereafter, such tenders
are irrevocable except that they may be withdrawn after May 3, 1999 unless
theretofore accepted for payment as provided in this Offer to Purchase. If
Purchaser extends the Offer, is delayed in its acceptance for payment of Shares
or is unable to purchase Shares validly tendered pursuant to the Offer for any
reason, then, without prejudice to Purchaser's rights under the Offer, the
Depositary may, on behalf of Purchaser, retain tendered Shares, and such Shares
may not be withdrawn except as otherwise described in this Section 4.

     For a withdrawal to be effective, a written, telegraphic, telex or
facsimile transmission notice of withdrawal must be timely received by the
Depositary at its address set forth on the back cover of this Offer to
Purchase. Any notice of withdrawal must specify the name of the person who
tendered the Shares to be withdrawn, the number of Shares to be withdrawn and
the name of the registered holder, if different from that of the person who
tendered such Shares. If the Shares to be withdrawn have been delivered or
otherwise identified to the Depositary, then prior to the physical release of
the certificates, the name of the registered holder (if different from the
tendering stockholder) and the serial numbers shown on such certificates must
be submitted to the Depositary, together with a signed notice of withdrawal,
the signatures on which must be guaranteed by an Eligible Institution unless
such Shares have been tendered for the account of any Eligible Institution. If
Shares have been tendered pursuant to the procedure for book-entry transfer as
set forth in Section 3, any notice of withdrawal must specify the name and
number of the account at the Book-Entry Transfer Facility to be credited with
the withdrawn Shares.

     All questions as to the form and validity (including time of receipt) of
any notice of withdrawal will be determined by Purchaser, in its sole
discretion, whose determination will be final and binding. Purchaser reserves
the absolute right to reject any and all withdrawals determined by it not to be
in proper form. Purchaser also reserves the absolute right to waive any defect
or irregularity in any withdrawal of Shares of any particular stockholder
whether or not similar defects or irregularities are waived in the case of
other stockholders. No withdrawal of Shares will be deemed to have been validly
made until all defects and irregularities have been cured or waived. None of
Purchaser, Parent, any of their affiliates or assigns, the Dealer Manager, the
Depositary, the Information Agent or any other person will be under any duty to
give notification of any defects or irregularities in any notice of withdrawal
or incur any liability for failure to give any such notification.

     Withdrawals of Shares may not be rescinded. Any Shares properly withdrawn
will thereafter be deemed not to have been validly tendered for purposes of the
Offer. However, withdrawn Shares may be re-tendered at any time prior to the
Expiration Date by following one of the procedures described in Section 3.

     5. CERTAIN FEDERAL INCOME TAX CONSEQUENCES. The summary of tax
consequences set forth below is for general information only and is based on
the law as currently in effect. The tax treatment of each stockholder will
depend in part upon such stockholder's particular situation. Special tax
consequences not described herein may be applicable to particular classes of
taxpayers, such as financial institutions, broker-dealers, insurance companies,
foreign corporations, foreign partnerships, foreign trusts, foreign estates,
persons who are not citizens or residents of the United States, tax-exempt
entities, stockholders who acquired their Shares through the exercise of an
employee stock option or otherwise as compensation, and persons who received
payments in respect of options to acquire Shares. ALL STOCKHOLDERS SHOULD
CONSULT WITH THEIR TAX ADVISORS AS TO THE PARTICULAR TAX CONSEQUENCES OF THE
OFFER AND THE MERGER TO THEM, INCLUDING THE APPLICABILITY AND EFFECT OF THE
ALTERNATIVE MINIMUM TAX AND ANY STATE, LOCAL OR FOREIGN INCOME OR OTHER TAX
LAWS AND CHANGES IN SUCH TAX LAWS.

     The receipt of cash pursuant to the Offer or the Merger will be a taxable
transaction for federal income tax purposes under the Internal Revenue Code of
1986, as amended (the "Code"), and may also be a taxable transaction under
applicable state, local, foreign income or other tax laws. Generally, for
federal income tax purposes, a stockholder will recognize gain or loss in an
amount equal to the difference between the cash received by the stockholder
pursuant to the Offer or the Merger and the stockholder's adjusted tax basis in
the Shares purchased pursuant to the Offer or converted to cash in the Merger.
Gain or loss will be calculated separately for each block of Shares tendered
and purchased pursuant to the


                                       8
<PAGE>

Offer or converted in the Merger, as the case may be. For federal income tax
purposes, such gain or loss will be a capital gain or loss if the Shares are a
capital asset in the hands of the stockholder, and a long-term capital gain or
loss if the stockholder's holding period is more than one year as of the date
Purchaser accepts such Shares for payment pursuant to the Offer or the
effective date of the Merger, as the case may be. In the case of a
non-corporate stockholder, long-term capital gain is currently eligible for a
maximum federal income tax rate of 20%. There are limitations on the
deductibility of capital losses.

     6. PRICE RANGE OF SHARES; DIVIDENDS. According to the Company's 1997
Annual Report on Form 10-K for the fiscal year ended December 31, 1997 (the
"1997 Annual Report"), the Shares are listed and traded on the NYSE under the
symbol "AYD". The following table sets forth, for the quarters indicated, the
high and low sales prices per Share on NYSE with respect to periods occurring
in 1997 and 1998 as reported by the Dow Jones News Service.

                                         HIGH        LOW
                                       --------   --------
       YEAR ENDED DECEMBER 31, 1997:
        First Quarter ..............    $11        $ 9-1/4
        Second Quarter .............     12-1/2     10-1/2
        Third Quarter ..............     13         10-7/8
        Fourth Quarter .............     14-1/8     11-1/8
       YEAR ENDED DECEMBER 31, 1998:
        First Quarter ..............    $12        $10-1/4
        Second Quarter .............     13-3/8      8-1/2
        Third Quarter ..............      9-1/8      7-1/4
        Fourth Quarter .............     10-1/4      7-1/4

     On February 26, 1999, the last full trading day prior to announcement of
the execution of the Merger Agreement, the closing sale price per Share
reported on NYSE was $911/16. On March 4, 1999, the last full trading day
before commencement of the Offer, the closing sale price per Share reported on
NYSE was $127/8. STOCKHOLDERS ARE URGED TO OBTAIN A CURRENT MARKET QUOTATION
FOR THE SHARES.

     7. CERTAIN INFORMATION CONCERNING THE COMPANY. The information concerning
the Company contained in this Offer to Purchase, including financial
information, has been taken from or based upon publicly available documents and
records on file with the Commission and other public sources. The summary
information concerning the Company in this Section 7 and elsewhere in this
Offer to Purchase is derived from the Company's 1997 Annual Report, the
Company's Quarterly Reports on Form 10-Q for the quarters ended April 4, 1998,
June 27, 1998 and September 26, 1998 (together, the "Company's 10-Q's") and
other publicly available information. The summary information set forth below
is qualified in its entirety by reference to such reports (which may be
obtained and inspected as described below) and should be considered in
conjunction with the more comprehensive financial and other information in such
reports and other publicly available reports and documents filed by the Company
with the Commission and other publicly available information. Although
Purchaser and Parent do not have any knowledge that would indicate that any
statements contained herein based upon such reports are untrue, neither
Purchaser nor Parent assumes any responsibility for the accuracy or
completeness of the information contained therein, or for any failure by the
Company to disclose events that may have occurred and may affect the
significance or accuracy of any such information but which are unknown to
Purchaser and Parent.

     General. The Company was incorporated in Delaware in September 1967. The
Company's principal executive offices are located at 700 Dresher Road, Horsham,
Pennsylvania 19044. The telephone number of the Company at such offices is
(215) 657-7510.

     The Company operates predominantly in the electronics manufacturing
industry. The Company consists domestically of two major operating and one
smaller support division, and one foreign operating subsidiary. The Company
disposed of its 80% interest in its Argentine subsidiary on December 31, 1996


                                       9
<PAGE>

and now owns 19% of that company. The divisions and subsidiaries are profit
centers each with engineering, manufacturing, marketing and accounting
functions. The Company designs, manufactures, and sells two main classes of
products.

     Communications. The Company provides a wide range of data and voice
communication systems and products for the commercial and military markets
throughout the world in a variety of public and private networks. In addition,
the Company custom-designs complex mission-critical applications such as
right-of-way communications for utility, railway and pipeline companies, and
the establishment of vital links to offshore platforms and satellite earth
stations. The Company also provides complete air defense communications systems
and commercial air traffic control solutions.

     The Company also manufacturers and installs communications products used
in satellite earth stations, providing both primary and back-up links such as
the Company's Satellite TDMA Terminals used for commercial and government
networks -- among them AT&T, Sprint and WorldCom, and national telecom
operations in the UK, France, Germany, Canada, Singapore and Brazil.

     The Company has supplied turnkey telecommunications systems to Australia,
Thailand, Turkey, Argentina, Zambia, Malaysia, Saudi Arabia, Finland and other
countries, serving infrastructure needs with integrated systems that may
include line-of-sight radios, satellite earth stations, multiplexers, switches,
fiber-optic cables, and other technology.

     Telemetry. The Company's telemetry products are used by space agencies
such as NASA and in defense and aerospace programs such as aircraft and weapons
development. These products and systems serve aerospace, satellite and
commercial aircraft markets in the United States and abroad. The Company
designs, manufactures and markets an extensive product line and provides
turnkey systems integration for airborne and ground-based applications. These
airborne and ground systems gather critical information from spacecraft,
satellites, aircraft, guided weapons and ground vehicles. This equipment
calibrates, processes and records or transmits information by radio or
microwave links to a fixed or mobile ground station that receives, processes
and analyzes the data.

     Financial Information. Set forth below are certain selected consolidated
financial data for the Company which was derived from the 1997 Annual Report
and the Company's 10-Q's. More comprehensive financial information (including
management's discussion and analysis of financial condition and results of
operations) is included in the reports and other documents filed by the Company
with the Commission, and the following financial data is qualified in its
entirety by reference to such reports and other documents, including the
financial statements and related notes contained therein. Such reports and
other documents may be examined and copies thereof may be obtained from the
offices of the Commission and NYSE in the manner set forth below.


                                       10
<PAGE>

                      AYDIN CORPORATION AND SUBSIDIARIES
                      SELECTED CONSOLIDATED FINANCIAL DATA
                   (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)


<TABLE>
<CAPTION>
                                               FOR THE
                                          NINE MONTHS ENDED               FOR THE FISCAL YEAR ENDED
                                         -------------------   -----------------------------------------------
                                            SEPTEMBER 26,       DECEMBER 31,     DECEMBER 31,     DECEMBER 31,
                                                 1998              1997(1)          1996(1)          1995(1)
                                         -------------------   --------------   --------------   -------------
<S>                                      <C>                   <C>              <C>              <C>
INCOME STATEMENT DATA
Sales ................................        $  65,211           $115,371        $ 116,578        $ 140,607
Cost and expenses ....................           85,752            115,945          136,337          134,706
                                              ---------           --------        ---------        ---------
Pre-tax profit (loss) ................          (20,541)              (574)         (19,759)           5,901
Income tax provision (recovery)                    (750)             1,118           (4,979)           1,971
                                              ---------           --------        ---------        ---------
Income (loss) from continuing
 operations ..........................          (19,791)            (1,692)         (14,780)           3,930
Income (loss) from discontinued
 operations ..........................           (6,659)                --               --               --
                                              ---------           --------        ---------        ---------
Net income (loss) ....................        $ (26,450)          $ (1,692)       $ (14,780)       $   3,930
                                              =========           ========        =========        =========
Diluted earnings per share ...........        $   (5.07)          $  (0.34)       $   (2.88)       $    0.77
                                              =========           ========        =========        =========
BALANCE SHEET DATA
Current assets .......................        $  82,132           $ 97,486        $  99,002        $ 140,810
Net property, plant &
 equipment ...........................           13,843             14,479           22,739           25,624
Other non-current assets .............               38                 90            2,622              426
                                              ---------           --------        ---------        ---------
Total assets .........................        $  96,013           $112,055        $ 124,363        $ 166,860
                                              =========           ========        =========        =========
Current liabilities ..................        $  31,339           $ 21,304        $  30,237        $  55,195
Long-term liabilities ................            1,249              1,409            3,799            7,092
Stockholders equity ..................           63,425             89,342           90,327          104,573
                                              ---------           --------        ---------        ---------
Total liabilities and equity .........        $  96,013           $112,055        $ 124,363        $ 166,860
                                              =========           ========        =========        =========
</TABLE>

- ----------
1 Commencing with the third fiscal quarter of 1998, the Company accounted for
  its Displays Division as a discontinued operation. Results for prior years
  have not been restated to reflect the Displays Division as a discontinued
  operation.


                                       11
<PAGE>

     On February 26, 1999 the Company issued a press release disclosing certain
financial information related to the fiscal year ended December 31, 1998 and
the fourth quarter of such year. The reported results are set forth below.

<TABLE>
<CAPTION>
                                                       FOR THE THREE
                                                       MONTHS ENDED           FOR THE FISCAL YEAR ENDED
                                               ----------------------------- ----------------------------
                                                DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,
                                                    1998           1997           1998           1997
                                               -------------- -------------- -------------- -------------
<S>                                            <C>            <C>            <C>            <C>
INCOME STATEMENT DATA
Net sales .................................... $12,677           $ 25,214      $  77,888      $ 94,854
Cost and expenses
 Contract arbitration and related ............    (529)                --         19,814             0
 All other ...................................  13,063             23,980         78,472        91,930
                                               -------           --------      ---------      --------
Total Costs and Expenses .....................  12,534             23,980         98,286        91,930
Income (Loss) from Continuing Operations        
 before Income taxes .........................     143              1,234        (20,398)        2,924
Income Tax Provision (Recovery) ..............      --               (197)          (750)        1,118
                                               -------           --------      ---------      --------
Income (Loss) from Continuing Operations .....     143              1,431        (19,648)        1,806
Loss from Discontinued Operations ............      --             (1,008)        (6,659)       (3,498)
                                               -------           --------      ---------      --------
Net Income (Loss) ............................ $   143           $    423      $ (26,307)     $ (1,692)
                                               =======           ========      =========      ========
Income (Loss) Per Share                         
Income (Loss) from Continuing Operations ..... $  0.03           $   0.27      $   (3.77)     $   0.34
                                               =======           ========      =========      ========
Income (Loss) ................................ $  0.03           $   0.08      $   (5.05)     $  (0.34)
                                               =======           ========      =========      ========
</TABLE>                                       

     More comprehensive information is expected to be included in the Company's
1998 Annual Report on Form 10-K which is expected to be filed with the
Commission no later than March 31, 1999. The reported results are subject to
completion of an audit and year end adjustment.

     The Shares are registered under the Exchange Act. Accordingly, the Company
is subject to the informational filing requirements of the Exchange Act and in
accordance therewith is obligated to file periodic reports, proxy statements
and other information with the Commission relating to its business, financial
condition and other matters. The Company is required to disclose in such proxy
statements certain information, as of particular dates, concerning the
Company's directors and officers, their remuneration, options granted to them,
the principal holders of the Company's securities and any material interest of
such persons in transactions with the Company. Such reports, proxy statements
and other information should be available for inspection at the public
reference facilities of the Commission located at Judiciary Plaza, 450 Fifth
Street, N.W., Washington, D.C. 20549, and should also be available for
inspection and copying at prescribed rates at the regional offices of the
Commission located at Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661, and Seven World Trade Center, Suite 1300, New York,
New York 10048. Such reports, proxy statements and other information may also
be obtained at the Web site that the Commission maintains at
http://www.sec.gov. Copies of this material may also be obtained by mail, upon
payment of the Commission's customary fees, from the Commission's principal
office at 450 Fifth Street, N.W., Washington, D.C. 20549. Such material should
also be available for inspection at the offices of the NYSE, 20 Broad Street,
New York, New York 10005. Except as otherwise noted in this Offer to Purchase,
all of the information with respect to the Company set forth in this Offer to
Purchase has been derived from publicly available information.

     8. CERTAIN INFORMATION CONCERNING PURCHASER, PARENT AND
HOLDINGS. Purchaser, a Delaware corporation and a wholly owned subsidiary of
Parent, was organized for the sole purposes of entering into the Merger
Agreement and consummating the transactions contemplated thereby, including
making the Offer, and has not carried on any activities to date other than
those incident to its formation, entering into such agreement and the
commencement of the Offer.


                                       12
<PAGE>

     Each of Holdings, Parent and Purchaser have their principal executive
offices at 600 Third Avenue, New York, New York 10016. The telephone number for
each of Holdings, Parent and Purchaser is (212) 697-1111. Holdings and Parent
were incorporated in Delaware in 1997. As of February 11, 1999, Mr. Frank C.
Lanza and Mr. Robert LaPenta collectively owned approximately 10.5% and Lehman
Brothers Capital Partners III, L.P. and its affiliates owned approximately
24.8% of the outstanding shares of Holdings' common stock.

     Parent is a leading merchant supplier of sophisticated secure
communication systems and specialized communication products. Parent produces
secure, high data rate communication systems, microwave components, avionics
and ocean systems and telemetry, instrumentation and space products. These
systems and products are critical elements of virtually all major
communication, command and control, intelligence gathering and space systems.
Parent's systems and specialized products are used to connect a variety of
airborne, space, ground- and sea-based communication systems and are used in
the transmission, processing, recording, monitoring and dissemination functions
of these communication systems. Parent's customers include the U.S. department
of defense, certain U.S. government intelligence agencies, major aerospace and
defense contractors, foreign governments and commercial customers. Parent is a
wholly owned subsidiary of Holdings.

     The name, citizenship, business address, principal occupation or
employment and five-year employment history of each of the directors and
executive officers of Purchaser and Parent and certain other information are
set forth in Schedule I hereto.

     Parent's shares are registered under the Exchange Act. Accordingly, Parent
is subject to the informational filing requirements of the Exchange Act and in
accordance therewith is obligated to file periodic reports, proxy statements
and other information with the Commission relating to its business, financial
condition and other matters. Parent is required to disclose in such proxy
statements certain information, as of particular dates, concerning the Parent's
directors and officers, their remuneration, options granted to them, the
principal holders of the Parent's securities and any material interest of such
persons in transactions with Parent. Such reports, proxy statements and other
information should be available for inspection at the public reference
facilities of the Commission located at Judiciary Plaza, 450 Fifth Street,
N.W., Washington, D.C. 20549, and should also be available for inspection and
copying at prescribed rates at the regional offices of the Commission located
at Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois
60661, and Seven World Trade Center, Suite 1300, New York, New York 10048. Such
reports, proxy statements and other information may also be obtained at the Web
site that the Commission maintains at http://www.sec.gov. Copies of this
material may also be obtained by mail, upon payment of the Commission's
customary fees, from the Commission's principal office at 450 Fifth Street,
N.W., Washington, D.C. 20549. Such material should also be available for
inspection at the offices of the NYSE, 20 Broad Street, New York, New York
10005.

     Except to the extent Shares owned by the Stockholders may be deemed to be
beneficially owned by Parent or Purchaser pursuant to Rule 13d-3 under the
Exchange Act as a result of the execution of the Tender Agreement, none of
Purchaser, Parent nor, to the knowledge of Purchaser and Parent, any of the
persons listed on Schedule I hereto nor any associate or majority-owned
subsidiary of Purchaser, Parent or any of the persons so listed, beneficially
owns or has a right to acquire directly or indirectly any Shares, and none of
Purchaser, Parent nor, to the best knowledge of Purchaser and Parent, any of
the persons or entities referred to above, nor any of their respective
executive officers, directors or subsidiaries, has effected any transactions in
the Shares during the past 60 days. In the ordinary course of Lehman Brothers'
business, Lehman Brothers may actively trade in the Shares for Lehman Brothers'
own account and for the accounts of Lehman Brothers' customers and,
accordingly, may at any time hold a long or short position in the Shares.

     Except as set forth in this Offer to Purchase, there have been no (i)
transactions or series of similar transactions between any of Parent, Purchaser
or, to the best knowledge of Purchaser and Parent, any of the persons listed in
Schedule I hereto, on the one hand, and (x) the Company or any of its
affiliates which are corporations, on the other hand, or (y) executive
officers, directors or affiliates of the Company which are not corporations, on
the other hand, involving an aggregate amount exceeding $40,000 or (ii)
contacts,


                                       13
<PAGE>

negotiations or transactions between any of Parent, Purchaser or, to the best
knowledge of Purchaser and Parent, any of the persons listed in Schedule I
hereto, on the one hand, and the Company or its affiliates, on the other hand,
concerning a merger, consolidation or acquisition, a tender offer or other
acquisition of securities, an election of directors, or a sale or other
transfer of a material amount of assets.

     Except for the Merger Agreement and the Tender Agreement, to the best
knowledge of Parent and Purchaser, (a) there are no contracts, arrangements,
understandings or relationships (legal or otherwise) among the persons named in
Schedule I hereto and between such persons and any person with respect to any
securities of the Company, including but not limited to, transfer or voting of
any of the securities of the Company, finder's fees, joint ventures, loan or
option arrangements, puts or calls, guarantees of profits, division of profits
or loss, or the giving or withholding of proxies and (b) none of the Shares are
pledged or otherwise subject to a contingency, the occurrence of which would
give another person voting power or investment power over the Shares.

     9.  SOURCE AND AMOUNT OF FUNDS.  The total amount of funds required by
Purchaser to purchase all of the outstanding Shares pursuant to the Offer and
to pay fees and expenses related to the Offer and the proposed Merger is
estimated to be approximately $74.0 million. Purchaser plans to obtain all
funds needed for the Offer and the proposed Merger through capital
contributions or advances made by Parent. Parent plans to use funds it has
available in its cash accounts.

     10. BACKGROUND OF THE OFFER; CONTACTS WITH THE COMPANY. Parent considers
and executes strategic acquisitions and alliances on an ongoing basis and may
be evaluating acquisitions or engaged in acquisition negotiations at any given
time. In late 1997 and mid-1998, representatives of the Company contacted
representatives of Parent to discuss on an informal basis potential
relationships and alliances.

     On August 20, 1998, the Company engaged PricewaterhouseCoopers as its
financial advisor to evaluate strategic alternatives available to the Company,
including a possible sale transaction. As part of this engagement,
PricewaterhouseCoopers solicited interest from a select group of potential
purchasers.

     In early October 1998, PricewaterhouseCoopers contacted Parent to inquire
whether Parent had an interest in acquiring the Company. On October 8, 1998,
the Company and Parent executed a confidentiality agreement with respect to the
provision of non-public information by the Company to Parent.

     On November 9, 1998, Parent was provided with a copy of a Confidential
Memorandum prepared by PricewaterhouseCoopers regarding the Company.

     On November 19, 1998, Parent submitted a letter to the Company Board
indicating it was potentially interested in acquiring 100% of the common stock
of the Company. On November 23, 1998, Frank C. Lanza, Chairman and Chief
Executive Officer of Parent, met with Warren Lichtenstein, Chairman of the
Board of the Company, regarding Parent's interest in the Company. In a
subsequent telephonic conference, Mr. Lichtenstein and James Henderson,
President and Chief Operating Officer of the Company, had discussions with
representatives of Parent regarding the Company's projected 1998 financial
performance.

     On November 24, 1998, based on those discussions, Parent submitted a
revised proposal to acquire 100% of the Company at $13.25 per share, which was
to be paid 40% in cash with the remaining 60% payable in shares of the common
stock of Holdings. On the same day, the Company Board held a meeting at which
it reviewed Parent's proposal with members of the Company's senior management,
PricewaterhouseCoopers and special counsel to the Company. Following
discussions, the Company Board determined that the best means for providing
value to the stockholders was to continue soliciting other interested parties
while continuing discussions with Parent.

     In December 1998, Parent commenced its due diligence review of the
Company. In mid-December 1998, representatives of the Company and Parent
discussed the general terms of a possible transaction.

     On December 23, 1998, legal counsel for Parent delivered to special
counsel to the Company comments on the form of the merger agreement previously
provided to Parent.


                                       14
<PAGE>

     In late December, Mr. Lanza, informed representatives of
PricewaterhouseCoopers that, subject to confirmatory due diligence, Parent
might be willing to propose an all cash acquisition of the Company's
outstanding shares for up to $14.00 per share. Shortly thereafter,
representatives of Parent commenced a due diligence investigation of the
Company and held discussions with members of the Company's senior management.
During this period of time, representatives of PricewaterhouseCoopers and
special counsel to the Company negotiated with representatives of Parent and
its legal counsel regarding the terms of the transaction.

     At a telephonic meeting of the Company Board on December 29, 1998, which
was adjourned and completed on December 30, 1998, the Company Board met to
review with the Company's financial and legal advisors, the terms and
conditions of the proposed merger agreement with Parent. The Company Board
reviewed various legal and business issues raised by the comments of Parent's
representatives on the merger agreement.

     At a telephonic meeting held on December 29, 1998, the Board of Directors
of Parent (the "Parent Board") met to review the potential acquisition of the
Company. Representatives of Parent presented the Parent Board with the results
of the due diligence review of the Company, and described the proposed terms of
the transaction and the open issues presented by the draft merger agreement. At
that meeting, after a lengthy discussion, the Parent Board unanimously
authorized Parent to proceed with the proposed acquisition of the Company at a
price of up to $14.00 per share, subject to resolution of certain open
business, contract and due diligence issues within parameters approved by the
Parent Board.

     Prior to resolving these issues, however, Parent determined that it was no
longer willing to proceed with the proposed acquisition of the Company and, in
early January 1999, so advised the Company. Discussions with representatives of
the Company and the due diligence review of the Company were discontinued at
that time.

     During January and early February 1999, PricewaterhouseCoopers continued
to solicit bids from other prospective acquirers. The Company delivered
management presentations to three other potential buyers. The Company
eventually decided not to pursue a transaction with such parties for various
reasons.

     On February 10, 1999, representatives of the Company contacted Parent to
inquire as to whether Parent was interested in restarting discussions regarding
an acquisition of the Company. On February 11 and 12, 1999, James Henderson and
representatives of PricewaterhouseCoopers met with representatives of Parent in
New York to discuss the Company's 1998 operating results and Parent recommenced
its due diligence review of the Company.

     On February 17, 1999, Parent submitted an offer of $13.00 per share, in
cash, for 100% of the outstanding common stock of the Company. Later that day
representatives of PricewaterhouseCoopers contacted Mr. Lanza to discuss the
valuation of the Company. During such conversation, Mr. Lanza orally agreed to
increase the price to $13.25 per share subject to completion of due diligence
and an acceptable definitive merger agreement. On February 22, 1999, Parent
agreed to increase the price to $13.50 per share.

     On February 25, 1999, the Company Board commenced a meeting wherein they
had detailed discussions regarding the terms of the proposed merger agreement.
The Company Board meeting was adjourned and reconvened on March 1, 1999. At
such meeting, PricewaterhouseCoopers presented its financial analyses of
Parent's proposal and rendered an oral fairness opinion to the Company Board,
which was confirmed in writing on March 1, 1999. Following the Company Board's
review of the final terms of the Offer and the Merger, the Company Board
unanimously determined that the Merger Agreement and the transactions
contemplated thereby, including the Offer and the Merger, are fair to, and in
the best interests of, the Company and its stockholders, approved the Merger
Agreement and the transactions contemplated thereby, and recommended that the
Company's stockholders accept the Offer and tender their Shares pursuant to the
Offer and approve and adopt the Merger Agreement and the transactions
contemplated thereby.


                                       15
<PAGE>

     Following the meeting of the Company Board, Parent, Purchaser and the
Company executed and delivered the Merger Agreement. Early in the afternoon on
March 1, 1999, Parent issued a press release announcing the execution of the
Merger Agreement.

     11. THE MERGER AGREEMENT; THE TENDER AGREEMENT. The following is a summary
of the Merger Agreement, which summary is qualified in its entirety by
reference to the Merger Agreement, which is filed as an exhibit to Parent's
Tender Offer Statement on Schedule 14D-1 (the "Schedule 14D-1") and
incorporated herein by reference. Capitalized terms used and not otherwise
defined below have the meanings set forth in the Merger Agreement.

     The Offer. The Merger Agreement provides for commencement of the Offer as
promptly as practicable, but no later than the fifth business day from the
public announcement of the execution of the Merger Agreement. Purchaser will,
on the terms and subject to the prior satisfaction or waiver (except that the
Minimum Condition may not be waived without consent of the Company) of the
conditions of the Offer, accept for payment and pay for Shares tendered and not
withdrawn pursuant to the Offer as soon as possible after the expiration
thereof. The Merger Agreement also provides that Purchaser expressly reserves
the right, in its sole discretion, to waive any such condition and make any
other changes in the terms and conditions of the Offer, provided that Purchaser
cannot amend or waive the Minimum Condition, decrease the Offer Price or the
number of Shares sought, or amend any other condition of the Offer in any
manner adverse to the holders of Shares without the prior written consent of
the Company. Notwithstanding the foregoing, Purchaser has agreed to extend the
Offer at any time up to May 10, 1999 for one or more periods of not more than
ten business days or, if longer, for any period required by any rule,
regulation, interpretation or position of the Commission or the staff thereof
applicable to the Offer, if, at the initial expiration date of the Offer or any
extension thereof, any condition to the Offer is not satisfied or waived. In
addition, the Offer Price may be increased and the Offer may be extended to the
extent required by law in connection with such increase, in each case without
the consent of the Company.

     Conditions to the Offer. In addition to the Minimum Condition, Purchaser
is not required to accept for payment or, subject to applicable legal
requirements, pay for any tendered Shares, and may delay acceptance for payment
of, or, subject to applicable legal requirements, delay payment for, any
tendered Shares, and may terminate the Offer, if (a) the Minimum Condition has
not been satisfied, (b) any applicable waiting period under the HSR Act has not
expired or terminated prior to the expiration of the Offer, or (c) at any time
on or after March 1, 1999 and before Shares are accepted for payment pursuant
to the Offer, any of the following occur: (i) there shall have been any action
or proceeding taken or instituted and pending, or any statute, rule,
regulation, judgment, order or injunction promulgated, entered, enforced,
enacted, issued or deemed applicable to the Offer or the Merger or any other
action taken, proposed or threatened, by any domestic or foreign federal or
state governmental regulatory or administrative agency, authority, court or
legislative body or commission which does or could be reasonably expected to
(A) prohibit or impose any material limitations on, Parent's or Purchaser's
ownership or operation of all or a material portion of the Company's or its
Subsidiaries' businesses or assets, (B) prohibit or make illegal the acceptance
for payment, payment for or purchase of Shares or the consummation of the Offer
or the Merger, (C) result in a material delay in or restrict the ability of
Purchaser, or render Purchaser unable, to accept for payment, pay for or
purchase some or all of the Shares, or (D) impose material limitations on the
ability of Purchaser or Parent effectively to acquire or exercise full rights
of ownership of the Shares, including, without limitation, the right to vote
the Shares purchased by it on all matters properly presented to the Company's
stockholders; provided, that Parent will have used all reasonable efforts to
cause any such judgment, order or injunction to be vacated or lifted; (ii) the
representations and warranties of the Company set forth in the Merger Agreement
shall not be true and accurate as of the date of consummation of the Offer as
though made on or as of such date or the Company shall have breached or failed
to perform or comply with any material obligation, agreement or covenant
required by the Merger Agreement to be performed or complied with by it except,
in each case (A) for changes specifically permitted by the Merger Agreement and
(B) those representations and warranties that address matters only as of a
particular date which need only be true and accurate as of such date; (iii) the
Merger Agreement shall have been terminated in accordance with its terms; (iv)
(A) the Company Board shall have withdrawn, or modified or changed in a manner
adverse to Parent or


                                       16
<PAGE>

Purchaser, its recommendation of the Offer, the Merger Agreement or the Merger,
shall have recommended another proposal or offer, or shall have resolved to do
any of the foregoing or (B) any such corporation, partnership, person or other
entity or group shall have entered into a definitive agreement or an agreement
in principle with the Company with respect to a tender offer or exchange offer
for any Shares or a merger, consolidation or other business combination with or
involving the Company or any of its Subsidiaries; (v) there shall have occurred
any fact that had or could reasonably be expected to result in a Company MAE
(as defined below); (vi) there shall have occurred (A) any general suspension
of funding, or limitation on prices for, securities on any national securities
exchange or in the over-the-counter market in the United States, (B) a decline
of at least 25% in either the Dow Jones Average of Industrial Stocks or the
Standard & Poor's 500 index from the date of the Merger Agreement, (C) any
material adverse change or any existing or threatened condition, event or
development involving a prospective material adverse change in United States or
other material international currency exchange rates or a suspension of, or
limitation on, the markets therefor, (D) a declaration of a banking moratorium
or any suspension of payments in respect of banks in the United States, (E) any
limitation (whether or not mandatory) by any government or governmental,
administrative or regulatory authority or agency, domestic or foreign, on, or
any other event that, in the reasonable judgment of Purchaser, could reasonably
be expected to materially adversely affect the extension of credit by banks or
other lending institutions, (F) a commencement of a war or armed hostilities or
other national or international calamity directly or indirectly involving the
United States (except for any such event involving Iraq or Bosnia) or
materially adversely affecting (or materially delaying) the consummation of the
Offer or (G) in the case of any of the foregoing existing at the time of
commencement of the Offer, a material acceleration or worsening thereof; which
in the reasonable judgment of Parent or Purchaser, in any such case, and
regardless of the circumstances giving rise to such condition, makes it
inadvisable to proceed with the Offer and/or with such acceptance for payment
or payments, or (vii) any applicable waiting periods under any material foreign
statutes or regulations shall not have expired or been terminated, or any
material approval, permit, authorization or consent of any domestic or foreign
governmental, administrative, or regulatory agency (federal, state, local,
provincial or otherwise) shall not have been obtained on terms satisfactory to
the Parent in its reasonable discretion.

     A "Company MAE" means any fact, circumstance, condition or effect which is
(i) materially adverse to the business, operations, assets, condition
(financial or otherwise) or results of operations of the Company and its
Subsidiaries, taken as a whole, other than any change, circumstance or effect
relating to the economy or securities markets in general or the industries in
which the Company operates and not specifically relating to the Company, or
(ii) materially adverse to the ability of the Company to perform any of its
material obligations under the Merger Agreement. A "Company MAE" will be deemed
to exist if net cash of the Company and its Subsidiaries is less than $10
million (without giving effect to any transaction-related fees and expenses of
the Financial Advisor, financial printers and outside counsel not exceeding
$1.35 million in the aggregate) as of the close of business on the Expiration
Date. Notwithstanding the foregoing, no "Company MAE" will be deemed to exist
solely by reason of certain liabilities identified to Parent.

     The Merger. The Merger Agreement provides that, at the Effective Time, and
subject to the conditions set forth therein and the provisions of the DGCL,
Purchaser shall be merged with and into the Company in accordance with the DGCL
and substantially in the manner described in the Offer, the separate corporate
existence of Purchaser shall cease, and the Company shall continue as the
Surviving Corporation, and each issued and outstanding Share (other than shares
to be canceled in accordance with the Merger Agreement and any Dissenting
Shares), shall be converted into and become the right to receive, the Offer
Price, payable to the holder thereof, without interest (the "Merger
Consideration"), upon surrender of the certificate formerly representing such
share of Company Common Stock in the manner provided in the Merger Agreement,
less any required withholding taxes. As of the Effective Time (as defined below
and in the Merger Agreement) by virtue of the Merger and without any action on
the part of any holder, all such Shares shall no longer be outstanding and
shall automatically be canceled and retired and shall cease to exist, and each
holder of a certificate representing any such shares shall cease to have any
rights with respect thereto, except the right to receive the Merger
Consideration therefor upon the surrender of such certificate in accordance
with the Merger Agreement, or to perfect any


                                       17
<PAGE>

appraisal rights that such holder may have pursuant to Section 262 of the DGCL.
The Merger Agreement also provides that (i) the directors and officers of
Purchaser at the Effective Time will be the initial directors and officers,
respectively, of the Surviving Corporation, until their successors have been
duly elected, appointed or qualified in accordance with the Surviving
Corporation's Certificate of Incorporation and By-laws, and (ii) the
Certificate of Incorporation and By-laws of Purchaser will be the Certificate
of Incorporation and By-laws, respectively, of the Surviving Corporation.

     Treatment of Options. The Merger Agreement provides that as of the
Effective Time, the Company's employee and non-employee director stock options
outstanding (the "Options") will become fully exercisable and vested and the
Options will be canceled. Unless otherwise agreed upon, the holders of such
canceled Options will receive the excess, if any, of the Offer Price over the
exercise price of such Options.

     Directors. The Merger Agreement provides that, promptly upon Parent's
purchase of and payment for Shares which represent at least a majority of the
outstanding Shares (on a fully diluted basis), Purchaser will be entitled to
designate such number of directors, rounded up to the next whole number, on the
Company Board as shall give Purchaser, subject to compliance with Section 14(f)
of the Exchange Act and Rule 14f-1 promulgated thereunder, representation on
the Company Board equal to the product of the total number of directors on the
Company Board (giving effect to the directors designated by Parent) multiplied
by the percentage that the aggregate number of Shares beneficially owned by
Parent, Purchaser and any of their affiliates bears to the total number of
Shares then outstanding (such number being the "Board Percentage"). The Company
will, upon request of Purchaser, cause Parent's designees to satisfy the Board
Percentage, including without limitation increasing the size of the Company
Board and securing the resignations of incumbent directors. Notwithstanding the
foregoing, until the Effective Time, the Company will retain on the Company
Board at least two directors who were directors of the Company on the date of
the Merger Agreement (the "Company Designees"); provided, that subsequent to
the purchase of and payment for Shares pursuant to the Offer, Parent shall
always have its designees represent at least a majority of the entire Company
Board. However, if at any time prior to the Effective Time there are less than
two Company Designees on the Company Board, Parent, Purchaser and the Company
shall either (i) use their reasonable efforts to appoint successors who are not
affiliated with Parent or Purchaser or (ii) permit the resigning Company
Designee to appoint his or her successors in his or her reasonable discretion.
The Company will use its reasonable best efforts to cause persons designated by
Purchaser to constitute the same percentage as is on the Company Board of (i)
each Committee of the Company Board, (ii) each board of directors of each
Subsidiary of the Company and (iii) each committee of each such board, in each
case only to the extent permitted by law.

     The Merger Agreement also provides that from and after the time, if any,
that Parent's designees constitute a majority of the Company Board, any
amendment of the Merger Agreement, termination of the Merger Agreement by the
Company, extension of time for performance of any of the obligations of Parent
or Purchaser or waiver of any condition or any of the Company's rights
thereunder may be effected only by the action of a majority of the directors of
the Company then in office who were directors on the date of the Merger
Agreement, which action shall be deemed to constitute the action of the full
Company Board; provided, that if there are no such directors, such actions may
be effected by unanimous vote of the entire Company Board.

     Stockholders' Meeting. Pursuant to the Merger Agreement, the Company will,
if required by applicable law in order to consummate the Merger, duly call,
give notice of, convene and hold a special meeting of its stockholders (the
"Special Meeting") as soon as practicable following the acceptance for payment
and purchase of Shares by Purchaser pursuant to the Offer for the purpose of
considering and taking action upon the approval of the Merger and adoption of
the Merger Agreement.

     The Merger Agreement also provides that the Company will, if required by
applicable law in order to consummate the Merger, (i) prepare and file with the
Commission a preliminary proxy or information statement relating to the Merger
and the Merger Agreement and will use its best efforts (A) to obtain and
furnish the information required by the Commission to be included in the Proxy
Statement (as defined below) and, after consultation with Parent, to respond
promptly to any comments made by the


                                       18
<PAGE>

Commission with respect to the preliminary proxy or information statement and
cause a definitive proxy or information statement (the "Proxy Statement") to be
mailed to its stockholders and (B) to obtain the necessary approvals of the
Merger and the Merger Agreement by its stockholders and (ii) subject to the
fiduciary obligations of the Company Board under applicable law as advised by
independent counsel, include in the Proxy Statement the recommendation of the
Company Board that stockholders of the Company vote in favor of the approval of
the Merger and adoption of the Merger Agreement. Parent agrees that it will
vote, or cause to be voted, all of the Shares then owned by it, the Purchaser
or any of its other subsidiaries and affiliates in favor of the approval of the
Merger and the adoption of the Merger Agreement. In the event that Parent,
Purchaser or any other subsidiary of Parent acquires, together with the Shares
owned by them collectively, at least 90% of the outstanding Shares pursuant to
the Offer or otherwise, the parties will take all necessary and appropriate
action to cause the Merger to become effective as soon as practicable after
such acquisition, without a meeting of the Company's stockholders, in
accordance with Section 253 of the DGCL (a "Short-Form Merger").

     Representations and Warranties. The Merger Agreement contains customary
representations and warranties of the Company and Parent with respect to, among
other things, (i) organization, (ii) authority to execute and deliver the
Merger Agreement, (iii) no conflict with any agreement, governmental
authorization or charter document, and (iv) accuracy of information to be
supplied for inclusion in Schedule 14D-1 or Schedule 14D-9, as the case may be.
Additional representations of the Company relate to, among other things, (i)
capitalization, (ii) accuracy of documents and reports filed with the
Commission, including financial statements, (iii) absence of undisclosed
liabilities, litigation and material adverse changes, (iv) employee benefit
plans/ERISA, (v) compliance with applicable laws, (vi) taxes, (vii)
environmental matters, (viii) state takeover laws, (ix) year 2000 problem, (x)
absence of certain changes, (xi) real property and (xii) voting requirements.
Additional representations of Parent and Purchaser relate to, among other
things, (i) financing, (ii) operations of Purchaser and (iii) limitation of
liability for information supplied.

     Interim Operations. In the Merger Agreement, the Company has agreed that,
among other things, between the date of the Merger Agreement and prior to the
time Purchaser's designees have been elected to, and constitute a majority of,
the Company Board, unless Parent otherwise agrees in writing and except as
otherwise contemplated by the Merger Agreement, (a) the Company and its
subsidiaries will conduct business only in the ordinary and usual course in a
manner consistent with past practice and in compliance with applicable laws and
the Company and its Subsidiaries shall each use its reasonable best efforts to
(i) preserve substantially intact the business organization and assets of the
Company and its Subsidiaries, (ii) keep available the services of the present
key officers, employees and consultants of the Company and its Subsidiaries,
(iii) preserve the present relationships of the Company and its Subsidiaries
with customers, suppliers and other persons with which the Company or any of
its Subsidiaries has significant business relations and (iv) maintain net cash
of the Company and its Subsidiaries of at least $10 million (without giving
effect to any transaction-related fees and expenses of the Financial Advisor,
financial printers and outside counsel not exceeding $1.35 million in the
aggregate) as of the close of business on the date of the expiration of the
Offer; and (b) the Company will not, directly or indirectly, (i) sell, transfer
or pledge or agree to sell, transfer or pledge any Shares or capital stock of
any of its subsidiaries beneficially owned by it, either directly or
indirectly; (ii) amend its Certificate of Incorporation or By-laws or similar
organizational documents; or (iii) split, combine or reclassify the outstanding
Shares or any outstanding capital stock of any of its Subsidiaries.

     In addition, neither the Company nor any of its Subsidiaries will (i)
declare, set aside or pay any dividend or other distribution payable in cash,
stock or property with respect to its capital stock; (ii) issue, deliver, sell,
pledge, dispose of or encumber any additional shares of, or securities
convertible into or exchangeable for, or options, warrants, calls, commitments
or rights of any kind to acquire, any shares of capital stock of any class of
the Company or its subsidiaries, other than Shares reserved for issuance on the
date of the Merger Agreement or issuances pursuant to the exercise of Options
outstanding on the date of the Merger Agreement; (iii) transfer, lease,
license, sell, mortgage, pledge, dispose of or encumber any material assets
other than in the ordinary and usual course of business and consistent with
past practice; (iv) incur or modify any indebtedness or liability or issue any
debt security; (v) redeem, purchase


                                       19
<PAGE>

or otherwise acquire, directly or indirectly, any of its capital stock; (vi)
modify, amend or terminate any of its material agreements or waive, release or
assign any material rights or claims, except in the ordinary course of business
and consistent with past practice; (vii) permit any material insurance policy
naming the Company as a beneficiary or a loss payable payee to be canceled or
terminated without replacement with a policy with coverage no less favorable to
the Company and its Subsidiaries on terms and conditions no less favorable to
the Company and its Subsidiaries; (viii) (A) assume, guarantee, endorse or
otherwise become liable or responsible (whether directly, contingently or
otherwise) for the material obligations of any other person (other than wholly
owned subsidiaries of the Company), except in the ordinary and usual course of
business; (B) make any material loans, advances or capital contributions to, or
investments in, any other person (other than to wholly owned subsidiaries of
the Company in the ordinary and usual course of business); (C) make any bid or
proposal, or enter into or amend in any material respect any contract or
agreement other than in ordinary course of business consistent with past
practice, which in any event would either (i) involve aggregate consideration
under such bid, proposal, contract or agreement in excess of $2 million or (ii)
be a bid, proposal or renewal at an amount of which the Company would expect
such bid, proposal or renewal to result in a loss thereunder to the Company;
(D) authorize any single capital expenditure which is in excess of $250,000 or
capital expenditures which are, in the aggregate, in excess of $1.0 million for
the Company and its Subsidiaries taken as a whole; (E) enter into any
transaction, contract or commitment with any affiliate of the Company; or (F)
enter into any material commitment or transaction with respect to any of the
foregoing (including, but not limited to, any borrowing, capital expenditure or
purchase, sale or lease of assets); (ix) change any of the accounting methods
used by the Company unless required by GAAP; (x) except as permitted in
connection with the termination of the Merger Agreement, adopt a plan of
complete or partial liquidation, dissolution, merger, consolidation,
restructuring, recapitalization or other reorganization of the Company or any
of its subsidiaries; (xi) except to the extent required under existing employee
and director benefit plans, agreements or arrangements as in effect on the date
of the Merger Agreement and disclosed to Parent, increase the compensation or
fringe benefits of any of its directors, officers or employees, except for
increases in salary or wages of employees of the Company or its Subsidiaries
who are not officers of the Company in the ordinary course of business in
accordance with past practice, or grant any retention, severance or termination
pay not currently required to be paid under existing severance plans to or
enter into any employment, consulting or severance agreement or arrangement
with any present or former director, officer or other employee of the Company
or any of its Subsidiaries, or establish, adopt, enter into or amend or
terminate any collective bargaining agreement or Company Plan, including, but
not limited to, bonus, profit sharing, thrift, compensation, stock option,
restricted stock, pension, retirement, deferred compensation, employment,
termination, severance or other plan, agreement, trust, fund, policy or
arrangement for the benefit of any directors, officers or employers; (xii) make
or change any Tax election, make or change any method or accounting with
respect to Taxes, file any amended Tax Return or settle or compromise any
material Tax liability (xiii) settle or compromise any pending or threatened
suit, action or claim against the Company or any Subsidiary for an aggregate
amount in excess of $50,000 or which is material or which relates to the
transactions contemplated hereby; (xiv) make any change in the key management
structure of the Company or any of its Subsidiaries, including, without
limitation, the hiring of additional officers or the termination of existing
officers; (xv) pay, discharge or satisfy any claims, liabilities or obligations
(absolute, accrued, asserted or unasserted, contingent of otherwise), other
than the payment, discharge or satisfaction in the ordinary course of business
in accordance with the terms of such obligation or liability and consistent
with past practice of liabilities reflected or reserved against in the
financial statements of the Company or incurred in the ordinary course of
business and consistent with past practice; (xvi) acquire (by merger,
consolidation, acquisition or stock or assets or otherwise) any corporation,
partnership or other business organization or division thereof or any material
assets; (xvii) neither the Company nor any of its Subsidiaries will take, or
agree to commit to take, any action that would make any representation or
warranty of the Company contained in the Merger Agreement inaccurate in any
material respect at, or as of any time prior to, the Effective Time (except for
representations made as of a specific date); or (xviii) authorize or enter into
an agreement to do any of the foregoing.

     No Solicitation. Pursuant to the Merger Agreement, the Company has agreed
that it and all of its Subsidiaries or affiliates, officers, directors,
employees, representatives and agents, will cease any existing


                                       20
<PAGE>

discussions or negotiations, if any, with any parties conducted heretofore with
respect to any acquisition or exchange of all or any material portion of the
assets or equity in the Company or any of its Subsidiaries or any business
combination with the Company or any of its Subsidiaries. Furthermore, neither
the Company, any of its Subsidiaries or affiliates nor their respective
officers, directors, employees, representatives or agents, shall directly or
indirectly solicit, participate in or initiate discussions or negotiations
with, or provide any information to any third party concerning any merger,
consolidation, tender offer, exchange offer, sale of all or substantially all
of the Company's direct and indirect assets, sale of shares of capital stock or
similar business combination transactions involving the Company or any
Subsidiary or principal operating or business unit of the Company ("Acquisition
Proposal"); provided, however, that if, at any time prior to the purchase of
Shares by Purchaser in the Offer, the Company Board by majority vote determines
in good faith, after receiving advice from its financial advisor and outside
counsel, that failing to take such action would constitute a breach of the
fiduciary duties of the Company Board under applicable law, the Company may, in
response to a bona fide written Acquisition Proposal which did not result from
a breach of the foregoing and which the Company Board determines in good faith
is superior to the Offer (any such bona fide written Acquisition Proposal being
referred to as a "Superior Proposal"), (i) furnish information or provide
access with respect to the Company and each of its Subsidiaries to such Person
pursuant to a customary confidentiality agreement (as determined by the Company
after consultation with its outside counsel) and (ii) participate in
discussions and negotiations regarding such Acquisition Proposal. The Company
Board agrees that it will keep Parent informed, on a current basis, of the
status and terms of any such proposals.

     In the event that prior to the completion of the Offer, the Company Board
determines in good faith, after the Company has received a Superior Proposal
and receipt of formal advice from its financial advisor and outside counsel,
failing to take such action would constitute a breach of its fiduciary duties
under applicable law, the Company Board may withdraw or modify its approval or
recommendation of the Offer, the Merger or this Agreement, approve or recommend
a Superior Proposal or terminate the Merger Agreement pursuant to the terms of
the Merger Agreement, provided that prior to any such action, the Company (i)
gives Parent at least two business days' notice of the effectiveness of such
action and (ii) simultaneously with such action, pays to Parent the $3 million
termination fee (see "--Termination Fee"). The foregoing provisions will not
prohibit the Company or the Company Board from taking and disclosing to the
Company's stockholders a position with respect to a tender or exchange offer by
a third party pursuant to Rules 14d-9 and 14e-2(a) promulgated under the
Exchange Act or from making such disclosure to the Company's stockholders or
otherwise which, in the judgment of the Company Board with the advice of
independent legal counsel, is required under applicable law or rules of any
stock exchange. The Company agrees not to release any third party from, or
waive any provisions of, (i) any standstill agreement to which the Company is a
party (other than for the limited purpose of discussions and negotiations
permitted by the foregoing) and (ii) any confidentiality agreement to which the
Company is a party.

     Employee Benefits. The Merger Agreement provides that Parent shall or
shall cause the Surviving Corporation to, until at least December 31, 1999,
maintain employee benefit plans, programs and arrangements (other than
stock-based plans) which are, in the aggregate, for the employees who were
active full-time employees of the Company or any Subsidiary immediately prior
to the Effective Time and continue to be active full-time employees of
Purchaser, the Surviving Corporation, any Subsidiary or any other affiliate of
Purchaser, no less favorable than those provided by the Company and any
Subsidiary immediately prior to the Effective Time. From and after the
Effective Time, for purposes of determining eligibility, vesting and
entitlement to vacation and severance and other benefits for employees actively
employed full-time by the Company or any Subsidiary immediately prior to the
Effective Time and who continue in the employ of the Company following the
Effective Time under any compensation, severance, welfare, pension, benefit,
savings or other Plan of the Parent or any of its Subsidiaries in which active
full-time employees of the Company and any Subsidiary become eligible to
participate (whether pursuant to foregoing or otherwise), service with the
Company or any Subsidiary (whether before or after the Effective Time) shall be
credited as if such service had been rendered to the Parent or such Subsidiary
(except to the extent necessary to prevent duplication of benefits). Parent
will, and will cause the Surviving Corporation to, observe all employment,
severance agreements or arrangements which provide for the acceleration of
benefits to employees of the Company upon a change of control, plans or
policies of the Company and its Subsidiaries.


                                       21
<PAGE>

     Directors' and Officers' Insurance and Indemnification. The Merger
Agreement provides that (a) from and after the consummation of the Offer
through the sixth anniversary of the date the Effective Time occurs, Parent
shall, and shall cause the Surviving Corporation to, indemnify, defend and hold
harmless any person who is now, or has been at any time prior to the date
hereof, or who becomes prior to the Effective Time, an officer or director (the
"Indemnified Party") of the Company and its Subsidiaries against all losses,
claims, damages, liabilities, costs and expenses (including reasonable
attorneys' fees and expenses), judgments, fines, and amounts paid in settlement
in connection with any actual or threatened action, suit, claim, proceeding or
investigation (each a "Claim") to the extent that any such Claim is based on,
or arises out of, (i) the fact that such person is or was a director, officer,
employee or agent of the Company or any Subsidiaries or is or was serving at
the request of the Company or any of its Subsidiaries as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise, or (ii) the Merger Agreement, or any of the transactions
contemplated thereby, in each case to the extent that any such Claim pertains
to any matter or fact arising, existing, or occurring prior to or at the
Effective Time, regardless of whether such Claim is asserted or claimed prior
to, at or after the Effective Time, to the full extent permitted under Delaware
law or the Company's Certificate of Incorporation, By-laws or indemnification
agreements in effect at the date hereof, including provisions relating to
advancement of expenses incurred in the defense of any action or suit; provided
that in the event any Indemnified Party becomes involved in any capacity in any
Claim, then from and after consummation of the Offer, the Company (or the
Surviving Corporation if after the Effective Time) shall, periodically advance
to such Indemnified Party its legal and other expenses (including the cost of
any investigation and preparation incurred in connection therewith), subject to
the provision by such Indemnified Party of an undertaking to reimburse the
amounts so advanced in the event of a final non-appealable determination by a
court of competent jurisdiction that such Indemnified Party is not entitled
thereto; (b) no Indemnified Party may settle any such claim without the prior
approval of Parent or the Surviving Corporation (such consent not to be
unreasonably withheld); (c) in the event that any claim, action, suit,
proceeding or investigation is brought against more than one Indemnified Party
(whether arising before or after the Effective Time), the Indemnified Parties
as a group shall retain one counsel (plus appropriate local counsel) reasonably
satisfactory to Parent or the Surviving Corporation; (d) Parent and the Company
have agreed that all rights to indemnification and all limitations of liability
existing in favor of the Indemnified Party as provided in the Company's
Certificate of Incorporation and By-laws as in effect as of the date hereof
shall survive the Merger and shall continue in full force and effect, without
any amendment thereto, for a period of six years from the Effective Time to the
extent such rights are consistent with the DGCL; provided that, in the event
any claim or claims are asserted or made within such six year period, all
rights to indemnification in respect of any such claim or claims shall continue
until disposition of any and all such claims; provided further, that any
determination required to be made with respect to whether an Indemnified
Party's conduct complies with the standards set forth under Delaware law, the
Company's Certificate of Incorporation or By-laws or such agreements, as the
case may be, shall be made by independent legal counsel selected by the
Indemnified Party and reasonably acceptable to Parent; and provided further,
that nothing in the Merger Agreement shall impair any rights or obligations of
any present or former directors or officers of the Company; (e) in the event
Parent or Purchaser or any of their successors or assigns (i) consolidates with
or merges into any other person and shall not be the continuing or surviving
corporation or entity of such consolidation or merger, or (ii) transfers or
conveys all or substantially all of its properties and assets to any person,
then, and in each such case, proper provision shall be made so that the
successors and assigns of Parent and Purchaser assume the obligations set forth
above and none of the actions described in clauses (i) or (ii) shall be taken
until such provision is made; and (f) Parent or the Surviving Corporation shall
maintain the Company's existing directors' and officers' liability insurance
policy ("D&O Insurance") for a period of not less than six years after the
Effective Date; provided, that (i) Parent may substitute therefor policies of
substantially similar coverage and amounts containing terms no less
advantageous to such former directors or officers; (ii) if the existing D&O
Insurance expires or is canceled during such period, Parent or the Surviving
Corporation will use their reasonable best efforts to obtain substantially
similar D&O Insurance, (iii) in no event shall Parent or the Surviving
Corporation be required to expend more than an amount per year in excess of
175% of current annual premiums paid by the Company to maintain or procure
insurance


                                       22
<PAGE>

coverage pursuant hereto; (iv) if the annual premiums of such insurance
coverage would exceed 175% of current annual premiums, Parent or the Surviving
Corporation shall obtain a policy with the greatest coverage available for a
cost not exceeding 175% of current annual premiums.

     Conditions to the Merger. The Merger Agreement provides that the
respective obligations of each party to effect the Merger are subject to the
satisfaction, on or prior to the Closing Date, of the following conditions: (a)
if required by the DGCL, the Merger Agreement will have been approved and
adopted by the requisite vote of the holders of Shares in order to consummate
the Merger; (b) no statute, rule, order, decree or regulation will have been
enacted or promulgated by any foreign or domestic Governmental Entity or
authority of competent jurisdiction which prohibits consummation of the Merger
and foreign or domestic all governmental consents, orders and approvals
required for the consummation of the Merger and the transactions contemplated
by the Merger Agreement will have been obtained and be in effect at the
Effective Time; (c) there will be no order or injunction (whether temporary,
preliminary or permanent) of a foreign or United States federal or state court
or other governmental authority of competent jurisdiction in effect precluding,
restraining, enjoining or prohibiting consummation of the Merger which order or
injunction is final and non-applicable; (d) the applicable time period under
the HSR Act shall have expired or been terminated; and (e) Parent, Purchaser or
their affiliates shall have purchased Shares pursuant to the Offer.

     Termination. The Merger Agreement provides that it may be terminated and
the Merger abandoned at any time prior to the Effective Time, whether before or
after stockholder approval thereof: (a) by mutual consent of the Board of
Directors of Parent and the Company Board; (b) by either of the Company Board
or the Board of Directors of Parent (i) if Parent or Purchaser shall have
terminated the Offer or if Shares shall not have been purchased pursuant to the
Offer on or prior to May 10, 1999; provided, however, that in the event of a
delay in Purchaser's purchase of the Shares pursuant to the Offer resulting
from an inquiry for additional materials made by a Governmental Entity relating
to the HSR Act or Federal antitrust laws, the right to terminate the Merger
Agreement under this clause (i) shall be extended until June 23, 1999;
provided, further, that the right to terminate this Agreement under this clause
(i) shall not be available to any party whose failure to fulfill any obligation
under the Merger Agreement has been the cause of, or resulted in, the failure
of Parent or Purchaser, as the case may be, to purchase Shares pursuant to the
Offer on or prior to such date or (ii) if any Governmental Entity of competent
jurisdiction has issued an order, decree or ruling or taken any other action
(which the parties will use their reasonable best efforts to lift) permanently
restraining, enjoining or otherwise prohibiting the transactions contemplated
by the Merger Agreement, and such order, decree, ruling or other action has
become final and non-appealable and, with respect to any court or governmental
body located outside the United States, such order, decree, ruling or other
action would, either individually or in the aggregate, have a Company MAE or a
material adverse effect on the business, operations, assets, condition
(financial or otherwise) or results of operations of Parent and its
Subsidiaries taken as a whole; (c) by the Company Board (i) if, prior to the
purchase of Shares pursuant to the Offer, the Company Board has (A) received a
bona fide offer which the Company Board determines in good faith is a Superior
Proposal, and (B) determined in good faith, as a result of such Superior
Proposal, outside counsel to the Company, that the failure to terminate the
Merger Agreement would violate its fiduciary duties to the Company's
stockholders under applicable law (provided that such termination under the
foregoing shall not be effective until the Company has made payment of the fee
required simultaneous with such termination pursuant to the terms of the Merger
Agreement); (ii) if, prior to the purchase of Shares pursuant to the Offer,
Parent or Purchaser breaches or fails in any material respect to perform or
comply with any of its material covenants and agreements or breaches its
representations and warranties in any material respect, and such breach is not
cured within fifteen (15) business days of written notice; (iii) if Parent or
Purchaser has terminated the Offer, or the Offer has expired, without Parent or
Purchaser purchasing any Shares; provided, that the Company may not terminate
the Merger Agreement pursuant to this clause (iii) if the Company is in
material breach of the Merger Agreement; or (iv) Purchaser has failed to
commence the Offer on or prior to five business days following the date of the
initial public announcement of the Offer, provided that the Company may not
terminate the Merger Agreement pursuant to this clause (iv) if the Company is
in material breach of the Merger Agreement; or (d) by the Board of Directors of
Parent if (i) Purchaser has failed to commence the Offer on or prior to five
business days following the date of the


                                       23
<PAGE>

initial public announcement of the Offer; provided that Parent may not
terminate the Merger Agreement pursuant to this clause (i) if Parent is in
material breach of the Merger Agreement; (ii) prior to the purchase of Shares
pursuant to the Offer, the Company Board has withdrawn, or modified or changed
in a manner adverse to Parent or Purchaser its approval or recommendation of
the Offer, the Merger Agreement or the Merger, or has recommended an
Acquisition Proposal or has executed an agreement in principle or definitive
agreement relating to an Acquisition Proposal or similar business combination
with a person or entity other than Parent, Purchaser or their affiliates (or
the Company Board resolves to do any of the foregoing); (iii) following any
negotiations by the Company with any person (other than Parent or Purchaser) of
an Acquisition Proposal, there shall have been a breach of any covenant or
agreement on the part of the Company contained in the Merger Agreement such
that the conditions set forth in clause (b) of Annex A of the Merger Agreement
would not be satisfied; (iv) if, prior to the purchase of Shares pursuant to
the Offer, Company breaches or fails in any material respect to perform or
comply with any of its material covenants and agreements contained herein or
breaches its representations and warranties in any material respect, and such
breach is not cured within fifteen (15) business days of written notice; or (v)
the Minimum Condition shall not have been satisfied by the expiration date of
the Offer and on or prior to such date (A) any person (other than Parent or
Purchaser) shall have made and not withdrawn a bona fide proposal or public
announcement or communication to the Company with respect to an Acquisition
Proposal or (B) any person (including the Company or any of its affiliates or
Subsidiaries), other than Parent, Purchaser or any of their affiliates shall
have become the beneficial owner of more than 25% of the Shares.

     Effect of Termination; Termination Fee. In the event of the termination of
the Merger Agreement, written notice thereof shall forthwith be given to the
other party or parties specifying the provision hereof pursuant to which such
termination is made, and the Merger Agreement shall forthwith become null and
void (except for the section pertaining to the termination fee), and there
shall be no liability on the part of Parent or the Company except for fraud or
for willful breach of the Merger Agreement. If the Merger Agreement is
terminated by the Company pursuant to the provision described in clause (c)(i)
or terminated by Parent pursuant to the provision described in clause (d)(ii)
or (d)(v) under "Termination" above (provided that at the time of such
termination by Parent, Parent and Purchaser were not in material breach of the
Merger Agreement), the Company will concurrently with such termination pay
Parent the $3.0 million termination fee.

     The Tender Agreement. Concurrently with the execution of the Merger
Agreement, Parent and the Stockholders entered into the Tender Agreement. The
following is a summary of certain provisions of the Tender Agreement and does
not purport to be complete and is qualified in its entirety by reference to the
complete text of the Tender Agreement, a copy of which is filed as Exhibit
(c)(2) to the Schedule 14D-1 and is incorporated by reference.

     Pursuant to the Tender Agreement, the Stockholders agreed to validly
tender all of their shares pursuant to the Offer and not withdraw any shares
therefrom.

     Each Stockholder agreed pursuant to the Tender Agreement that it would (a)
vote the Shares owned by it in favor of the Merger Agreement; (b) vote the
Shares against any action or agreement that would result in a breach in any
material respect of any covenant, representation or warranty or any other
obligation or agreement of the Company under the Merger Agreement; and (c) vote
the Shares against any action or agreement (other than the Merger Agreement or
the transactions contemplated thereby) that would impede, interfere with,
delay, postpone or attempt to discourage the Merger or Offer. As of and
following the date of the Tender Agreement, each Stockholder agreed not to vote
such Shares or grant any other proxy or power of attorney with respect to any
Shares, deposit any Shares into a voting trust or enter into any agreement,
arrangement or understanding with any person, directly or indirectly, to vote,
grant any proxy or give instructions with respect to the voting of such Shares.
 

     12. PURPOSE OF THE OFFER; THE MERGER; PLANS FOR THE COMPANY. Purpose. The
purpose of the Offer is to acquire control of, and the entire equity interest
in, the Company. The Offer is being made pursuant to the Merger Agreement. As
promptly as practicable following consummation of the Offer and after
satisfaction or waiver of all conditions to the Merger set forth in the Merger
Agreement, Purchaser intends to acquire the remaining equity interest in the
Company not acquired in the Offer by consummating the Merger.


                                       24
<PAGE>

     The Company Board has approved and adopted the Merger and the Merger
Agreement in accordance with the DGCL. The Company Board will be required to
submit the Merger Agreement to the Company's stockholders for approval at a
stockholders' meeting convened for that purpose in accordance with the DGCL.
However, if Purchaser acquires more than 90% of the outstanding shares of each
of the Voting Shares and the Non-Voting Shares, Purchaser intends to effect the
Merger without a meeting of the Company's stockholders under Section 253 of the
DGCL. In the event the conditions described in the foregoing sentence are not
met and stockholder approval is required, the DGCL requires that unless
otherwise provided by the Company's Certificate of Incorporation, the Merger
Agreement must be approved by the vote of the holders of a majority of the
outstanding Voting Shares. Under the DGCL and the Certificate of Incorporation
of the Company, the Company's stockholders may act by written consent provided
that the action to be effected and the taking of such action by written consent
have expressly been approved in advance by the Company Board. In the event that
the Company's stockholders are required to approve the Merger Agreement,
immediately following the designation of Parent's representatives to the
Company Board as described in Section 11 under "Designation of Directors",
Parent will seek to have the Company Board approve the stockholders of the
Company acting by written consent to approve the Merger Agreement. If such
approval is granted, Parent will cause Purchaser to submit a written consent
approving the Merger Agreement. In either case, if the Minimum Condition is
satisfied, Purchaser will have the power, which it intends to exercise, to
approve the Merger Agreement without the affirmative vote or written consent of
any other stockholder.

     THIS OFFER TO PURCHASE DOES NOT CONSTITUTE A SOLICITATION OF A PROXY,
CONSENT OR AUTHORIZATION FOR OR WITH RESPECT TO THE ANNUAL MEETING OR ANY
SPECIAL MEETING OF THE COMPANY'S STOCKHOLDERS OR ANY ACTION IN LIEU THEREOF.
ANY SUCH SOLICITATION, IF REQUIRED, WHICH PURCHASER MAY MAKE WILL BE MADE ONLY
PURSUANT TO SEPARATE PROXY MATERIALS IN COMPLIANCE WITH THE REQUIREMENTS OF
SECTION 14(A) OF THE EXCHANGE ACT.

     THE OFFER IS CONDITIONED UPON THE MINIMUM CONDITION BEING SATISFIED.

     Appraisal Rights. Stockholders do not have appraisal rights as a result of
the Offer. However, if the Merger is consummated, stockholders of the Company
at the time of the Merger who do not vote in favor of the Merger will have the
right under the DGCL to dissent and demand appraisal of, and receive payment in
cash of the fair value of, their Shares outstanding immediately prior to the
effective date of the Merger in accordance with Section 262 of the DGCL.

     Under the DGCL, dissenting stockholders who comply with the applicable
statutory procedures will be entitled to receive a judicial determination of
the fair value of their Shares (exclusive of any element of value arising from
the accomplishment or expectation of such merger or similar business
combination) and to receive payment of such fair value in cash. Any such
judicial determination of the fair value of such Shares could be based upon
considerations other than or in addition to the price paid in the Offer and the
Merger and the market value of the Shares. In Weinberger v. UOP, Inc., the
Delaware Supreme Court stated, among other things, that "proof of value by any
techniques or methods which are generally considered acceptable in the
financial community and otherwise admissible in court" should be considered in
an appraisal proceeding. Stockholders should recognize that the value so
determined could be higher or lower than the Per Share Amount to be paid
pursuant to the Offer or the consideration per Share to be paid in the Merger
or other similar business combination

     In addition, several decisions by Delaware courts have held that in
certain circumstances a controlling stockholder of a corporation involved in a
merger has a fiduciary duty to other stockholders that requires that the merger
be fair to other stockholders. In determining whether a merger is fair to
minority stockholders, Delaware courts have considered, among other things, the
type and amount of the consideration to be received by the stockholders and
whether there was fair dealing among the parties. The Delaware Supreme Court
stated in Weinberger and Rabkin v. Philip A. Hunt Chemical Corp. that the
remedy ordinarily available to minority stockholders in a cash-out merger is
the right to appraisal described above. However, a damages remedy or injunctive
relief may be available if a merger is found to be the product of procedural
unfairness, including fraud, misrepresentation or other misconduct.

     THE FOREGOING SUMMARY OF THE RIGHTS OF OBJECTING STOCKHOLDERS DOES NOT
PURPORT TO BE A COMPLETE STATEMENT OF THE PROCEDURES TO BE FOLLOWED BY
STOCKHOLDERS DESIRING TO EXERCISE ANY AVAILABLE APPRAISAL RIGHTS. THE
PRESERVATION AND EXERCISE OF APPRAISAL RIGHTS REQUIRES STRICT ADHERENCE TO THE
APPLICABLE PROVISIONS OF THE DGCL.


                                       25
<PAGE>

     The foregoing description of the DGCL is not necessarily complete and is
qualified in its entirety by reference to the DGCL.

     Rule 13e-3. The Commission has adopted Rule 13e-3 under the Exchange Act
which is applicable to certain "going private" transactions and which may under
certain circumstances be applicable to the Merger following the purchase of
Shares pursuant to the Offer or any alternative transaction (including any
purchase of Shares in the open market following the purchase of Shares pursuant
to the Offer for the purpose of acquiring at least 90% of the outstanding
shares of each class of capital stock of the Company in order to effect the
Merger without a stockholder meeting in accordance with Section 253 of the
DGCL) in which Purchaser seeks to acquire any remaining Shares. Rule 13e-3
should not be applicable to the Merger if the Merger is consummated within one
year after the expiration or termination of the Offer and the price paid in the
Merger is not less than the price paid pursuant to the Offer. However, in the
event that Purchaser is deemed to have acquired control of the Company pursuant
to the Offer and if the Merger is consummated more than one year after
completion of the Offer or an alternative acquisition transaction is effected
whereby stockholders of the Company receive consideration less than that paid
pursuant to the Offer, in either case at a time when the Shares are still
registered under the Exchange Act, Purchaser may be required to comply with
Rule 13e-3 under the Exchange Act. If applicable, Rule 13e-3 would require,
among other things, that certain financial information concerning the Company
and certain information relating to the fairness of the Merger or such
alternative transaction and the consideration offered to minority stockholders
in the Merger or such alternative transaction be filed with the Commission and
disclosed to stockholders prior to consummation of the Merger or such
alternative transaction. The purchase of a substantial number of Shares
pursuant to the Offer may result in the Company being able to terminate its
Exchange Act registration. See Section 14. If such registration were
terminated, Rule 13e-3 would be inapplicable to the Merger or any such
alternative transaction.

     Plans for the Company. It is currently expected that initially following
the purchase of the Shares and the consummation of the Offer, the business and
operations of the Company will continue as they currently are conducted without
substantial change. Parent will continue to evaluate all aspects of the
business, operations and management of the Company during the pendency of the
Offer and after the consummation of the Offer and will take such further
actions as it deems appropriate under the circumstances then existing.

     Except as described in this Offer to Purchase, none of Purchaser, Parent
nor, to the best knowledge of Purchaser and Parent, any of the persons listed
on Schedule I have any present plans or proposals that would relate to or
result in an extraordinary corporate transaction such as a merger,
reorganization or liquidation involving the Company or any of its subsidiaries
or a sale or other transfer of a material amount of assets of the Company or
any of its subsidiaries, any material change in the capitalization or dividend
policy of the Company or any other material change in the Company's corporate
structure or business or the composition of its Company Board or management.

     13. DIVIDENDS AND DISTRIBUTIONS. If the Company should, on or after the
date of the Merger Agreement, split, combine or otherwise change the Shares or
its capitalization, or disclose that it has taken any such action, then without
prejudice to Purchaser's rights under Section 15, Purchaser may make such
adjustments to the purchase price and other terms of the Offer as it deems
appropriate to reflect such split, combination or other change.

     If on or after the date of the Merger Agreement, the Company should
declare or pay any cash or stock dividend or other distribution on, or issue
any rights with respect to, the Shares that is payable or distributable to
stockholders of record on a date prior to the transfer to the name of Purchaser
or the nominee or transferee of Purchaser on the Company's stock transfer
records of such Shares that are purchased pursuant to the Offer, then without
prejudice to Purchaser's rights under Section 15, (i) the purchase price
payable per Share by Purchaser pursuant to the Offer will be reduced to the
extent any such dividend or distribution is payable in cash and (ii) any
non-cash dividend, distribution (including additional Shares) or right received
and held by a tendering stockholder shall be required to be promptly remitted
and transferred by the tendering stockholder to the Depositary for the account
of Purchaser, accompanied by appropriate documentation of transfer. Pending
such remittance or appropriate


                                       26
<PAGE>

assurance thereof, Purchaser will, subject to applicable law, be entitled to
all rights and privileges as owner of any such non-cash dividend, distribution
or right and may withhold the entire purchase price or deduct from the purchase
price the amount or value thereof, as determined by Purchaser in its sole
discretion.

     14. EFFECT OF THE OFFER ON THE MARKET FOR THE SHARES; STOCK EXCHANGE
LISTING; EXCHANGE ACT REGISTRATION. The purchase of Shares pursuant to the
Offer will reduce the number of Shares that might otherwise trade publicly and
could reduce the number of holders of Shares, which could adversely affect the
liquidity and market value of the remaining Shares held by the public.
Following completion of the Offer, at least a majority of the outstanding
Shares will be owned by Purchaser.

     The Shares are currently listed on the NYSE. According to the NYSE's
published guidelines, the NYSE would consider delisting the Shares if, among
other things, the number of record holders of at least 100 Shares should fall
below 1,200, the number of publicly held Shares (exclusive of holdings of
officers, directors and their families and other concentrated holdings of 10%
or more ("NYSE Excluded Holdings")) should fall below 600,000 or the aggregate
market value of publicly held Shares (exclusive of NYSE Excluded Holdings)
should fall below $5,000,000. If, as a result of the purchase of Shares
pursuant to the Offer or otherwise, the Shares no longer meet the requirements
of the NYSE for continued listing and the listing of the Shares is
discontinued, the market for the Shares could be adversely affected.

     If the NYSE were to delist the Shares, it is possible that the Shares
would continue to trade on another securities exchange or in the
over-the-counter market and that price or other quotations would be reported by
such exchange or through the National Association of Securities Dealers
Automated Quotation System ("NASDAQ") or other sources. The extent of the
public market therefor and the availability of such quotations would depend,
however, upon such factors as the number of stockholders and/or the aggregate
market value of such securities remaining at such time, the interest in
maintaining a market in the Shares on the part of the securities firms, the
possible termination of registration under the Exchange Act as described below
and other factors. Purchaser cannot predict whether the reduction in the number
of Shares that might otherwise trade publicly would have an adverse or
beneficial effect on the market price for or marketability of the Shares or
whether it would cause future market prices to be greater or less than the
Offer price.

     The Shares are currently registered under the Exchange Act. The purchase
of Shares pursuant to the Offer may result in the Shares becoming eligible for
deregistration under the Exchange Act. Registration of the Shares may be
terminated upon application of the Company to the Commission if the Shares are
not listed on a national securities exchange and there are fewer than 300
record holders. The termination of the registration of the Shares under the
Exchange Act would substantially reduce the information required to be
furnished by the Company to holders of the Shares and would make certain
provisions of the Exchange Act, such as the short-swing profit recovery
provisions of Section 16(b), the requirement of furnishing a proxy statement in
connection with stockholders' meetings and the requirements of Rule 13e-3 under
the Exchange Act with respect to "going private" transactions, no longer
applicable to the Shares or the holders thereof, as the case may be.
Furthermore, "affiliates" of the Company and persons holding "restricted
securities" of the Company may be deprived of the ability to dispose of the
securities pursuant to Rule 144 under the Securities Act of 1933, as amended.

     If registration of the Shares under the Exchange Act were terminated, the
Shares would no longer be margin securities eligible for listing or for NASDAQ
reporting.

     The Shares are currently "margin securities" under the rules of the Board
of Governors of the Federal Reserve System (the "Federal Reserve Board"), which
has the effect, among other things, of allowing brokers to extend credit on the
collateral of such Shares for the purpose of buying, carrying or trading in
securities ("purpose loans"). Depending upon factors similar to those described
above with respect to listing and market quotations, it is possible that,
following the Offer, the Shares might no longer constitute "margin securities"
for the purposes of the Federal Reserve Board's margin regulations and
therefore could no longer be used as collateral for purpose loans made by
brokers.


                                       27
<PAGE>

     15. CERTAIN CONDITIONS OF THE OFFER. Notwithstanding any other provisions
of the Offer, and in addition to (and not in limitation of) Purchaser's rights
to extend and amend the Offer at any time in its sole discretion (subject to
the provisions of the Merger Agreement), Purchaser shall not be required to
accept for payment or, subject to any applicable rules and regulations of the
SEC, including Rule 14e-1(c) under the Exchange Act (relating to Purchaser's
obligation to pay for or return tendered Shares promptly after termination or
withdrawal of the Offer), pay for, and may delay the acceptance for payment of
or, subject to the restriction referred to above, the payment for, any tendered
Shares, and may terminate the Offer if (i) the Minimum Condition has not been
satisfied, (ii) any applicable waiting period under the HSR Act has not expired
or terminated prior to the expiration of the Offer or (iii) at any time on or
after March 1, 1999 and before the time of acceptance of Shares for payment
pursuant to the Offer, any of the following events shall occur:

     (a) there shall have been any action or proceeding taken or instituted and
pending, or any statute, rule, regulation, judgment, order or injunction
promulgated, entered, enforced, enacted, issued or deemed applicable to the
Offer or the Merger, or any other action taken, proposed or threatened, by any
domestic or foreign federal or state governmental regulatory or administrative
agency or authority or court or legislative body or commission which does or
could reasonably be expected to (l) prohibit or impose any material limitations
on, Parent's or Purchaser's ownership or operation of all or a material portion
of the Company's or its Subsidiaries' businesses or assets compelling Parent,
Purchaser or any of their affiliates to dispose of or hold separate all or any
material portion of the business or assets of the Company or any of its
Subsidiaries or Parent, or any of its affiliates, as a result of the
transactions contemplated by the Offer or the Merger Agreement, (2) prohibit or
make illegal the acceptance for payment, payment for or purchase of Shares or
the consummation of the Offer or the Merger, (3) result in a material delay in
or restrict the ability of Purchaser, or render Purchaser unable, to accept for
payment, pay for or purchase some or all of the Shares, or (4) impose material
limitations on the ability of Purchaser or Parent effectively to acquire or
exercise full rights of ownership of the Shares, including, without limitation,
the right to vote the Shares purchased by it on all matters properly presented
to the Company's stockholders, provided that Parent shall have used all
reasonable efforts to cause any such judgment, order or injunction to be
vacated or lifted; provided further that the condition specified in this
paragraph (a) shall not be deemed to exist by reason of any court proceeding
pending on the date hereof and known to Purchaser or Parent, unless in the
reasonable judgement of Purchaser there is any material adverse development in
any such proceeding after the date hereof, or before the date hereof if not
known to Purchaser or Parent on the date hereof, which would result in any of
the consequences referred to in clauses (1) through (4) above;

     (b) the representations and warranties of the Company set forth in the
Merger Agreement shall not be true and correct in any respect as of the date of
consummation of the Offer as though made on or as of such date or the Company
shall have breached or failed in any material respect to perform or comply with
any obligation, agreement or covenant required by the Merger Agreement to be
performed or complied with by it except, in each case, those representations
and warranties that address matters only as of a particular date which are true
and correct as of such date;

     (c) the Merger Agreement shall have been terminated in accordance with its
terms;

     (d) (i) the Company Board shall have withdrawn, or modified or changed in
a manner adverse to Parent or Purchaser (including by amendment of the Schedule
14D-9) its recommendation of the Offer, the Merger Agreement, or the Merger, or
recommended another proposal or offer, or shall have resolved to do any of the
foregoing or (ii) any such corporation, partnership, person or other entity or
group shall have entered into a definitive agreement or an agreement in
principle with the Company with respect to a tender offer or exchange offer for
any Shares or a merger, consolidation or other business combination with or
involving the Company or any of its subsidiaries;

     (e) there shall have occurred any fact that had or could reasonably be
expected to result in a Company MAE;

     (f) there shall have occurred (i) any general suspension of trading in, or
limitation on prices for, securities on any national securities exchange or in
the over-the-counter market in the United States, (ii)


                                       28
<PAGE>

a decline of at least 25% in either the Dow Jones Average of Industrial Stocks
or the Standard & Poor's 500 index from the date hereof, (iii) any material
adverse change or any existing or threatened condition, event or development
involving a prospective material adverse change in United States or other
material international currency exchange rates or a suspension of, or
limitation on, the markets therefor, (iv) a declaration of a banking moratorium
or any suspension of payments in respect of banks in the United States, (v) any
limitation (whether or not mandatory) by any government or governmental,
administrative or regulatory authority or agency, domestic or foreign, on, or
any other event that, in the reasonable judgment of Purchaser, could reasonably
be expected to materially adversely affect the extension of credit by banks or
other lending institutions, (vi) a commencement of a war or armed hostilities
or other national or international calamity directly or indirectly involving
the United States (except for any such event involving Iraq or Bosnia) or
materially adversely affecting (or materially delaying) the consummation of the
Offer or (vii) in the case of any of the foregoing existing at the time of
commencement of the Offer, a material acceleration or worsening thereof; or

     (g) any applicable waiting periods under any material foreign statutes or
regulations shall not have expired or been terminated, or any material
approval, permit, authorization or consent of any domestic or foreign
governmental, administrative, or regulatory agency (federal, state, local,
provincial or otherwise) shall not have been obtained on terms satisfactory to
Parent in its reasonable discretion;

which in the reasonable judgment of Purchaser with respect to each and every
matter referred to above and regardless of the circumstances (including any
action or inaction by Purchaser or any of its affiliates other than a breach of
the Merger Agreement) giving rise to any such condition, makes it inadvisable
to proceed with the Offer or with such acceptance for payment of or payment for
Shares or to proceed with the Merger.

     The foregoing conditions are for the sole benefit of Purchaser and Parent
and may be waived by Parent or Purchaser, in whole or in part at any time and
from time to time in the sole discretion of Parent or Purchaser. The failure by
Purchaser at any time to exercise any of the foregoing rights shall not be
deemed a waiver of any such right, the waiver of any such right with respect to
particular facts and other circumstances, and each such right shall be deemed
an ongoing right that may be asserted at any time and from time to time.

     16. CERTAIN LEGAL MATTERS AND REGULATORY APPROVALS. General. Except as set
forth below, based upon its examination of publicly available filings by the
Company with the Commission and other publicly available information concerning
the Company, neither Purchaser nor Parent is aware of any licenses or other
regulatory permits that appear to be material to the business of the Company
and its subsidiaries, taken as a whole, that might be adversely affected by
Purchaser's acquisition of Shares (and the indirect acquisition of the stock of
the Company's subsidiaries) as contemplated herein, or of any filings,
approvals or other actions by or with any domestic (federal or state), foreign
or supranational governmental authority or administrative or regulatory agency
that would be required prior to the acquisition of Shares (or the indirect
acquisition of the stock of the Company's subsidiaries) by Purchaser pursuant
to the Offer as contemplated herein. Should any such approval or other action
be required, it is Purchaser's present intention to seek such approval or
action. However, Purchaser does not presently intend to delay the purchase of
Shares tendered pursuant to the Offer pending the receipt of any such approval
or the taking of any such action (subject to Purchaser's right to delay or
decline to purchase Shares if any of the Offer Conditions in Section 15 shall
have occurred). There can be no assurance that any such approval or other
action, if needed, would be obtained without the imposition of substantial
conditions that must be complied with or that adverse consequences might not
result to the business of the Company, Parent or Purchaser as a result of the
imposition of such conditions or in the event that such approval was not
obtained or such other action was not taken, any of which could cause Purchaser
to elect to terminate the Offer without the purchase of the Shares thereunder.
Purchaser's obligation under the Offer to accept for payment and pay for Shares
is subject to certain conditions, including conditions relating to the legal
matters discussed in Section 15.

     State Takeover Laws. Except as described herein with respect to Section
203 of the DGCL, Purchaser has not attempted to comply with any state takeover
statutes in connection with the Offer.


                                       29
<PAGE>

Purchaser reserves the right to challenge the validity or applicability of any
state law allegedly applicable to the Offer and nothing in this Offer to
Purchase nor any action taken in connection herewith is intended as a waiver of
that right. In the event that any state takeover statute is found applicable to
the Offer, Purchaser might be unable to accept for payment or purchase Shares
tendered pursuant to the Offer or be delayed in continuing or consummating the
Offer. In such case, Purchaser may not be obligated to accept for purchase or
pay for, any Shares tendered. See Section 15. In addition, Pennsylvania has
adopted a takeover disclosure law which purports to regulate attempts to
acquire a corporation which (i) is incorporated in Pennsylvania or (ii) has its
principal place of business and substantial assets in Pennsylvania. The
Company's executive offices are located in Horsham, Pennsylvania. Because the
Company Board has recommended acceptance of the Offer, the Offer is exempt from
the registration requirements of such law provided that certain information is
filed with the Pennsylvania Securities Commission and Purchaser undertakes to
notify the Company's stockholders that such filing must be made with the
Pennsylvania Securities Commission, must include substantial information about
the Offer and must be available for inspection at the offices of the
Pennsylvania Securities Commission, 1010 N. 7th Street, 2nd Floor, Harrisburg,
Pennsylvania 17102 during normal business hours. Purchaser intends to make such
filing, and the distribution of this Offer to Purchase to the Company's
stockholders constitutes the required notification to them.

     Antitrust. Under the HSR Act and the rules that have been promulgated
thereunder by the Federal Trade Commission (the "FTC"), certain acquisition
transactions may not be consummated unless certain information has been
furnished to the FTC and the Antitrust Division of the Department of Justice
(the "Antitrust Division") and certain waiting period requirements have been
satisfied. The acquisition of Shares pursuant to the Offer is subject to such
requirements. See Section 2.

     Parent intends to file with the FTC and the Antitrust Division a Premerger
Notification and Report Form in connection with the purchase of Shares pursuant
to the Offer. Under the provisions of the HSR Act applicable to the Offer, the
purchase of Shares pursuant to the Offer may not be consummated until the
expiration of a 15-calendar day waiting period following such filing, unless
such waiting period is extended by a request from the FTC or the Antitrust
Division for additional information or documentary material prior to the
expiration of the waiting period. If either the FTC or the Antitrust Division
were to request additional information or documentary material from Parent, the
waiting period would expire at 11:59 p.m., New York City time, on the tenth
calendar day after the date of substantial compliance by Parent with such
request. Thereafter, the waiting period could be extended only by court order
or by an agreement involving Parent and the Company. If the acquisition of
Shares is delayed pursuant to a request by the FTC or the Antitrust Division
for additional information or documentary material pursuant to the HSR Act, the
Offer may, but need not, be extended and in any event the purchase of and
payment for Shares will be deferred until ten days after the request is
substantially complied with, unless the waiting period is sooner terminated by
the FTC and the Antitrust Division. See Section 2. Only one extension of such
waiting period pursuant to a request for additional information is authorized
by the HSR Act and the rules promulgated thereunder, except by court order. Any
such extension of the waiting period will not give rise to any withdrawal
rights not otherwise provided for by applicable law. See Section 4.

     The FTC and the Antitrust Division frequently scrutinize the legality
under the antitrust laws of transactions such as the proposed acquisition of
Shares by Purchaser pursuant to the Offer. At any time before or after the
purchase by Purchaser of Shares pursuant to the Offer, either of the FTC or the
Antitrust Division could take such action under the antitrust laws as it deems
necessary or desirable in the public interest, including seeking to enjoin the
purchase of Shares pursuant to the Offer or seeking the divestiture of Shares
purchased by Purchaser or the divestiture of substantial assets of Parent, its
subsidiaries or the Company. Private parties and state attorneys general may
also bring legal action under federal or state antitrust laws under certain
circumstances.

     Although Purchaser believes that the acquisition of Shares pursuant to the
Offer would not violate the antitrust laws, there can be no assurance that a
challenge to the Offer on antitrust grounds will not be made or, if such
challenge is made, what the outcome will be. See Section 15 for certain
conditions to the Offer, including conditions with respect to litigation and
certain government actions.


                                       30
<PAGE>

     Margin Credit Regulations. Federal Reserve Board Regulations G, T, U and X
(the "Margin Credit Regulations") restrict the extension or maintenance of
credit for the purpose of buying or carrying margin stock, including the
Shares, if the credit is secured directly or indirectly thereby. Such secured
credit may not be extended or maintained in an amount that exceeds the maximum
loan value of the margin stock. Under the Margin Credit Regulations, the Shares
are presently margin stock and the maximum loan value thereof is generally 50%
of their current market value. The definition of "indirectly secured" contained
in the Margin Credit Regulations provides that the term does not include an
arrangement with a customer if the lender in good faith has not relied upon
margin stock as collateral in extending or maintaining the particular credit.

     17. FEES AND EXPENSES. Lehman Brothers is acting as Dealer Manager in
connection with the Offer for which Parent and Purchaser will pay Lehman
Brothers a fee of $150,000 upon commencement of the Offer and a fee of $300,000
upon consummation of the Offer. In addition, Parent and Purchaser will
reimburse Lehman Brothers for reasonable out-of-pocket expenses, including
reasonable attorneys' fees, and have also agreed to indemnify Lehman Brothers
against certain liabilities and expenses in connection with the Offer,
including certain liabilities under the federal securities laws.

     Purchaser has retained D.F. King & Co., Inc. to act as the Information
Agent and ChaseMellon Shareholder Services, L.L.C. to act as the Depositary in
connection with the Offer. The Information Agent may contact holders of Shares
by mail, telephone, telex, telegraph and personal interview and may request
brokers, dealers and other nominee stockholders to forward the Offer materials
to beneficial owners. The Information Agent and the Depositary will receive
reasonable and customary compensation for services relating to the Offer and
will be reimbursed for certain out-of-pocket expenses. Purchaser and Parent
have also agreed to indemnify the Information Agent and the Depositary against
certain liabilities and expenses in connection with the Offer, including
certain liabilities under the federal securities laws.

     Purchaser will not pay any fees or commissions to any broker or dealer or
any other person for soliciting tenders of Shares pursuant to the Offer (other
than to the Dealer Manager, the Information Agent and the Depositary). Brokers,
dealers, commercial banks and trust companies will, upon request, be reimbursed
by Purchaser for reasonable and customary mailing and handling expenses
incurred by them in forwarding offering materials to their customers.

     18. MISCELLANEOUS. The Offer is being made solely by this Offer to
Purchase and the related Letter of Transmittal and is being made to all holders
of Shares. Purchaser is not aware of any state where the making of the Offer is
prohibited by administrative or judicial action pursuant to any valid state
statute. If Purchaser becomes aware of any valid state statute prohibiting the
making of the Offer or the acceptance of Shares pursuant thereto, Purchaser
will make a good faith effort to comply with any such state statute. If after
such good faith effort, Purchaser cannot comply with such state statute, the
Offer will not be made to nor will tenders be accepted from or on behalf of the
holders of Shares in such state. In any jurisdiction where the securities, blue
sky or other laws require the Offer to be made by a licensed broker or dealer,
the Offer shall be deemed to be made on behalf of Purchaser by the Dealer
Manager or one or more registered brokers or dealers that are licensed under
the laws of such jurisdiction.

     Purchaser and Parent have filed with the Commission the Tender Offer
Statement Schedule 14D-1 (including exhibits) pursuant to Rule 14d-3 under the
Exchange Act, and Statement on Schedule 13D under the Exchange Act, furnishing
certain additional information with respect to the Offer. Such statement and
any amendments thereto, including exhibits, may be inspected and copies may be
obtained from the offices of the Commission (except that they will not be
available at the regional offices of the Commission) in the manner set forth in
Section 7 of this Offer to Purchase.

     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION ON BEHALF OF PURCHASER OR PARENT NOT CONTAINED HEREIN OR IN THE
LETTER OF TRANSMITTAL AND IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION
MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED.


                                        ANGEL ACQUISITION CORPORATION



March 5, 1999

                                       31
<PAGE>

                                  SCHEDULE I


                       DIRECTORS AND EXECUTIVE OFFICERS
                       OF PURCHASER, PARENT AND HOLDINGS


     1. DIRECTORS AND EXECUTIVE OFFICERS OF PURCHASER. The name and position
with Purchaser of each director and executive officer of Purchaser are set
forth below. The other required information with respect to each such person is
set forth under "Directors and Executive Officers of Parent and Holdings"
below. All directors and executive officers listed below are citizens of the
United States.

NAME                                              POSITION
- ---------------------------------   -----------------------------------
Christopher C. Cambria ..........   President, Secretary and Director.
Lawrence W. O'Brien .............   Vice President and Treasurer.

     2. DIRECTORS AND EXECUTIVE OFFICERS OF PARENT AND HOLDINGS. The name,
business address, present principal occupation or employment and material
occupations, positions, offices or employments during the last five years of
each director and executive officer of Parent and Holdings and certain other
information are set forth below. The business address of each such director and
executive officer is: c/o L-3 Communications Corporation, 600 Third Avenue, New
York, New York 10016. Unless otherwise indicated, each occupation set forth
opposite an individual's name refers to employment with Parent and Holdings.
All directors and executive officers listed below are citizens of the United
States.

                              PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT
                             AND MATERIAL OCCUPATIONS, POSITIONS, OFFICES
NAME                         OR EMPLOYMENT HELD DURING THE LAST FIVE YEARS
- ----                         ---------------------------------------------
DIRECTORS

David J. Brand .......... Director (since 4/97); Managing Director of Lehman
                          Brothers (since 1996); Senior Vice President of
                          Lehman Brothers (1994-1996); Vice President of
                          Lehman Brothers (1991-1994).

Thomas A. Corcoran ...... Director (since 7/97); President and Chief Operating
                          Officer of the Space Sector of Lockheed Martin
                          (since 8/98); President and Chief Operating Officer
                          of the Electronics Systems Sector of Lockheed Martin
                          (3/95-8/98); President of Electronics Group of Martin
                          Marietta Corporation (1993-1995).

Alberto M. Finali ....... Director (since 4/97); Managing Director of Lehman
                          Brothers (since 1997); Senior Vice President of
                          Lehman Brothers (1993-1997); Vice President of
                          Lehman Brothers (1989-1993).

Eliot M. Fried .......... Director (since 4/97); Managing Director of Lehman
                          Brothers (since 1986).

Frank C. Lanza .......... Director; Chairman and Chief Executive Officer
                          (since 4/97); Executive Vice President of Lockheed
                          Martin and President and Chief Operating Officer of
                          Lockheed Martin's C(3)I and Systems Integration
                          Sector (4/96-4/97); President and Chief Operating
                          Officer of Loral (since 1981).

                                 I-1
<PAGE>

                               PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT
                              AND MATERIAL OCCUPATIONS, POSITIONS, OFFICES
NAME                         OR EMPLOYMENT HELD DURING THE LAST FIVE YEARS
- ----                         ---------------------------------------------
Robert V. LaPenta ....... Director; President and Chief Financial Officer (since
                          4/97); Vice President of Lockheed Martin and Vice
                          President and Chief Financial Officer of Lockheed
                          Martin's C(3)I and Systems Integration Sector
                          (4/96-4/97); Senior Vice President and Controller of
                          Loral (1981-4/96).

Frank H. Menaker, Jr. ... Director (since 4/97); Senior Vice President and
                          General Counsel of Lockheed Martin (since 7/96);
                          Vice President and General Counsel of Lockheed
                          Martin (3/95-7/96); Vice President of Martin Marietta
                          Corporation (1982-1995); General Counsel of Martin
                          Marietta (1981-1995).

Robert B. Millard ....... Director (since 4/97); Managing Director of Lehman
                          Brothers (since 1983).

John E. Montague ........ Director (since 4/97); Vice President and Chief
                          Financial Officer of Lockheed Martin Global
                          Telecommunications, Inc. (since 8/98); Vice President
                          of Financial Strategies at Lockheed Martin (since
                          3/95); Vice President of Corporate Development and
                          Investor Relations at Martin Marietta Corporation
                          ( 1991-1995).

John M. Shalikashvili ... Director (since 8/98); Senior Officer of the United
                          States Military and Principal Military Advisor to the
                          President of the United States, the Secretary of
                          Defense and National Security Council (1993-1997).

Alan H. Washkowitz ...... Director (since 4/97); Managing Director of Lehman
                          Brothers (since 1978).

OFFICERS

Jimmie V. Adams ......... Vice President-Washington D.C. Operations (since
                          4/97); Vice President of Lockheed Martin's
                          Washington Operations for C(3)I and Systems
                          Integration Sector (4/96-4/97); Vice President of
                          Loral's Washington Operations for C(3)I and
                          System's Integration Sector (since 1993).

Christopher C. Cambria .. Vice President-General Counsel and Secretary (since
                          6/97); Associate at Fried, Frank, Harris, Shriver, and
                          Jacobson (1994-1997); Associate at Cravath, Swaine
                          and Moore (1986-1993).

Frank C. Lanza .......... Chairman and Chief Executive Officer.

Robert V. LaPenta ....... President and Chief Financial Officer.

                                 I-2
<PAGE>

                              PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT
                             AND MATERIAL OCCUPATIONS, POSITIONS, OFFICES
NAME                         OR EMPLOYMENT HELD DURING THE LAST FIVE YEARS
- ----                         ---------------------------------------------
Robert F. Mehmel ........ Vice President-Planning and Assistant Secretary
                          (since 4/97); Director of Financial Planning and
                          Capital Review for Lockheed Martin's C(3)I and
                          Systems Integration Sector (4/96-4/97); Held several
                          accounting and financial analysis positions at Loral
                          Electronic Systems (1984-1996).

Lawrence W. O'Brien ..... Vice President-Treasurer (since 6/97); Vice President
                          and Treasurer of Pechiney Corporation (since 1981).

Joseph S. Paresi ........ Vice President-Product Development (since 4/97);
                          Corporate Director of Technology for Lockheed
                          Martin's C(3)I and Systems Integration Sector (since
                          4/96); Corporate Director of Technology for Loral
                          (since 1993).

Robert Riscassi ......... Vice President-Washington D.C. Operations (since
                          4/97); Vice President of Land Systems for Lockheed
                          Martin C(3)I and Systems Integration Sector
                          (4/96-4/97); Vice President of Land Systems for
                          Loral's C(3)I and Systems Integration Sector (since
                          1993).

Lawrence H. Schwartz .... Vice President-Business Development (since 5/97);
                          Vice President of Technology for Lockheed Martin's
                          C(3)I and Systems Integration Sector (4/96-5/97);
                          Vice President of Technology at Loral (since 1987).

Michael T. Strianese .... Vice President-Finance and Controller (since 4/97);
                          Vice President and Controller of Lockheed Martin's
                          C(3)I and Systems Integration Sector (4/96-4/97);
                          Director of Special Projects at Loral (1991-4/96).

  3. OWNERSHIP OF SHARES BY DIRECTORS AND EXECUTIVE OFFICERS.

None.

                                      I-3
<PAGE>

     Facsimile copies of the Letter of Transmittal, properly completed and duly
executed, will be accepted. The Letter of Transmittal, certificates for Shares
and any other required documents should be sent or delivered by each
stockholder of the Company or his, her or its broker, dealer, commercial bank,
trust company or other nominee to the Depositary as follows:





<TABLE>
<S>                                 <C>                                      <C>
                                         The Depositary for the Offer is:
                                     CHASEMELLON SHAREHOLDER SERVICES, L.L.C.
 
               By Mail:                          By Hand:                          By Overnight Delivery:
        Reorganization Department        Reorganization Department               Reorganization Department
           Post Office Box 3301                 120 Broadway                         85 Challenger Road
  South Hackensack, New Jersey 07606             13th Floor                           Mail Stop-Reorg
                                          New York, New York 10271           Ridgefield Park, New Jersey 07660
                                                                             
        By Facsimile Transmission:                                            Confirm Receipt of Facsimile by
    (For Eligible Institutions Only)                                                  Telephone Only:
               (201) 296-4293                                                          (201) 296-4860
</TABLE>                                                                     
                                                                     
     Any questions and requests for assistance may be directed to the
Information Agent or the Dealer Manager at their respective telephone numbers
and addresses listed below. Additional copies of this Offer to Purchase, the
Letter of Transmittal and the Notice of Guaranteed Delivery may also be
obtained from the Information Agent. You may also contact your broker, dealer,
commercial bank or trust company for assistance concerning the Offer.


                    The Information Agent for the Offer is:

                             D.F. KING & CO., INC.

                                77 Water Street
                         New York, New York 10005-4495
                Banks and Brokers Call Collect: (212) 269-5550
                   ALL OTHERS CALL TOLL-FREE: (800) 755-7250

                     The Dealer Manager for the Offer is:

                                LEHMAN BROTHERS

                         Three World Financial Center
                               200 Vesey Street
                           New York, New York 10285
                 Call Collect: (212) 526-8376 or (212) 526-1162




<PAGE>

                             LETTER OF TRANSMITTAL
                       TO TENDER SHARES OF COMMON STOCK
                                      OF

                               AYDIN CORPORATION
             PURSUANT TO THE OFFER TO PURCHASE DATED MARCH 5, 1999
                                      BY

                         ANGEL ACQUISITION CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                        L-3 COMMUNICATIONS CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                       L-3 COMMUNICATIONS HOLDINGS, INC.

- -------------------------------------------------------------------------------
    THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK
      CITY TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE OFFER IS EXTENDED.
- -------------------------------------------------------------------------------

                        The Depositary for the Offer is:

                   CHASEMELLON SHAREHOLDER SERVICES, L.L.C.

<TABLE>
<S>                                    <C>                         <C>
               By Mail:                        By Hand:                  By Overnight Delivery:
        Reorganization Department      Reorganization Department       Reorganization Department
           Post Office Box 3301               120 Broadway                 85 Challenger Road
  South Hackensack, New Jersey 07606           13th Floor                   Mail Stop-Reorg
                                        New York, New York 10271   Ridgefield Park, New Jersey 07660

        By Facsimile Transmission:                                  Confirm Receipt of Facsimile by
    (For Eligible Institutions Only)                                        Telephone Only:
               (201) 296-4293                                                (201) 296-4860
</TABLE>

     DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE, OR TRANSMISSIONS OF INSTRUCTIONS VIA A FACSIMILE NUMBER OTHER THAN
AS SET FORTH ABOVE, WILL NOT CONSTITUTE A VALID DELIVERY.

     THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF TRANSMITTAL SHOULD BE READ
CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.

     This Letter of Transmittal is to be completed by stockholders, either if
certificates for Shares (as defined below) are to be forwarded herewith or,
unless an Agent's Message (as defined in the Offer to Purchase) is utilized, if
tenders of Shares are to be made by book-entry transfer into the account of the
ChaseMellon Shareholder Services, L.L.C., as Depositary (the "Depositary"), at
The Depository Trust Company ("DTC" or the "Book-Entry Transfer Facility")
pursuant to the procedures set forth in Section 3 of the Offer to Purchase.
Stockholders who tender Shares by book-entry transfer are referred to herein as
"Book-Entry Stockholders."

     Holders of Shares whose certificates for such Shares (the "Share
Certificates") are not immediately available or who cannot deliver the Share
Certificates and all other required documents to the Depositary prior to the
Expiration Date (as defined in Section 1 of the Offer to Purchase), or who
cannot complete the procedure for book-entry transfer on a timely basis, must
tender their Shares according to the guaranteed delivery procedure set forth in
Section 3 of the Offer to Purchase. See Instruction 2. DELIVERY OF DOCUMENTS TO
THE BOOK-ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE DELIVERY TO THE
DEPOSITARY.
<PAGE>

<TABLE>
<S>                                                                 <C>
- -----------------------------------------------------------------------------------------------------------------
                                  DESCRIPTION OF SHARES TENDERED
- -----------------------------------------------------------------------------------------------------------------
   NAME(S) AND ADDRESS(ES) OF REGISTERED HOLDER(S) (PLEASE FILL        SHARE CERTIFICATE(S) AND SHARES TENDERED
  IN, IF BLANK, EXACTLY AS NAME(S) APPEAR(S) ON CERTIFICATE(S))      (ATTACH ADDITIONAL SIGNED LIST IF NECESSARY)
- -----------------------------------------------------------------------------------------------------------------
                                                                                     TOTAL NUMBER               
                                                                        SHARES         OF SHARES       NUMBER    
                                                                     CERTIFICATE    REPRESENTED BY    OF SHARES  
                                                                      NUMBER(S)*    CERTIFICATE(S)    TENDERED**  
                                                                   -------------- ----------------- ------------- 
 
                                                                   -------------- ----------------- ------------- 
 
                                                                   -------------- ----------------- ------------- 
 
                                                                   -------------- ----------------- ------------- 
 
                                                                   -------------- ----------------- ------------- 
 
                                                                   -------------- ----------------- ------------- 
                                                                   TOTAL SHARES:
- -----------------------------------------------------------------------------------------------------------------
 *     NEED NOT BE COMPLETED BY BOOK-ENTRY STOCKHOLDERS.
 **    UNLESS OTHERWISE INDICATED, ALL SHARES REPRESENTED BY CERTIFICATES DELIVERED TO THE DEPOSITARY WILL
       BE DEEMED TO HAVE BEEN TENDERED. SEE INSTRUCTION 4.
- -----------------------------------------------------------------------------------------------------------------
</TABLE>
 
                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY

[ ] CHECK HERE IF SHARES ARE BEING TENDERED BY BOOK-ENTRY TRANSFER MADE TO AN
    ACCOUNT MAINTAINED BY THE DEPOSITARY WITH THE BOOK-ENTRY TRANSFER FACILITY
    AND COMPLETE THE FOLLOWING (ONLY PARTICIPANTS IN THE BOOK-ENTRY TRANSFER
    FACILITY MAY DELIVER SHARES BY BOOK-ENTRY TRANSFER):

    Name of Tendering Institution 
                                 ----------------------------------------------

    DTC Account Number                 Transaction Code Number    
                      ----------------                        -----------------

[ ] CHECK HERE IF SHARES ARE BEING TENDERED PURSUANT TO A NOTICE OF GUARANTEED 
    DELIVERY PREVIOUSLY SENT TO THE DEPOSITARY AND COMPLETE THE FOLLOWING:

    Name(s) of Registered Owner(s): 
                                   --------------------------------------------

    Window Ticket Number (if any): 
                                  ---------------------------------------------

    Date of Execution of Notice of Guaranteed Delivery: 
                                                       ------------------------

    Name of Institution that Guaranteed Delivery:
                                                 ------------------------------

    If delivered by Book-Entry Transfer:

    DTC Account Number                 Transaction Code Number    
                      ----------------                        -----------------
 

                                       2
<PAGE>

Ladies and Gentlemen:

     The undersigned hereby tenders to Angel Acquisition Corporation, a
Delaware corporation ("Purchaser") and a wholly owned subsidiary of L-3
Communications Corporation, a Delaware corporation ("Parent") and a wholly
owned subsidiary of L-3 Communications Holdings, Inc., a Delaware corporation,
the above-described shares of Common Stock, par value $1.00 per share (the
"Shares"), of Aydin Corporation, a Delaware corporation (the "Company"), at a
purchase price of $13.50 per Share, net to the seller in cash, without interest
thereon, upon the terms and subject to the conditions set forth in the Offer to
Purchase dated March 5, 1999 (the "Offer to Purchase") and in this Letter of
Transmittal (which, as amended from time to time, together constitute the
"Offer"). The undersigned understands that Purchaser reserves the right to
transfer or assign, in whole or from time to time in part, to one or more of
its affiliates, the right to purchase all or any portion of the Shares tendered
pursuant to the Offer, receipt of which is hereby acknowledged.

     Subject to, and effective upon, acceptance for payment for the Shares
tendered herewith in accordance with the terms of the Offer, the undersigned
hereby sells, assigns and transfers to, or upon the order of, Purchaser all
right, title and interest in and to all of the Shares that are being tendered
hereby and any and all dividends, distributions (including additional Shares)
or rights declared, paid or issued with respect to the tendered Shares on or
after the date hereof and payable or distributable to the undersigned on a date
prior to the transfer to the name of Purchaser or nominee or transferee of
Purchaser on the Company's stock transfer records of the Shares tendered
herewith (collectively, a "Distribution"), and appoints the Depositary the true
and lawful agent and attorney-in-fact of the undersigned with respect to such
Shares (and any Distribution) with full power of substitution (such power of
attorney being deemed to be an irrevocable power coupled with an interest) to
(a) deliver such Share Certificates (and any Distribution) or transfer
ownership of such Shares (and any Distribution) on the account books maintained
by the Book-Entry Transfer Facility, together in either case with appropriate
evidences of transfer, to the Depositary for the account of Purchaser, (b)
present such Shares (and any Distribution) for transfer on the books of the
Company and (c) receive all benefits and otherwise exercise all rights of
beneficial ownership of such Shares (and any Distribution), all in accordance
with the terms and subject to the conditions of the Offer.

     The undersigned irrevocably appoints designees of Purchaser as such
stockholder's attorneys-in-fact and proxies, with full power of substitution,
to the full extent of such stockholder's rights with respect to the Shares
tendered by such stockholder and accepted for payment by Purchaser (and with
respect to any and all other Shares or other securities issued or issuable in
respect of such Shares on or after the date hereof). All such powers of
attorney and proxies shall be considered irrevocable and coupled with an
interest in the tendered Shares. Such appointment will be effective when, and
only to the extent that, Purchaser accepts such Shares for payment. Upon such
acceptance for payment, all prior powers of attorney and proxies given by such
stockholder with respect to such Shares (and such other Shares and securities)
will be revoked without further action, and no subsequent powers of attorney
and proxies may be given nor any subsequent written consents executed (and, if
given or executed, will not be deemed effective). The designees of Purchaser
will, with respect to the Shares for which such appointment is effective, be
empowered to exercise all voting and other rights of such stockholder as they
in their sole discretion may deem proper at any annual or special meeting of
the Company's stockholders or any adjournment or postponement thereof, by
written consent in lieu of any such meeting or otherwise. Purchaser reserves
the right to require that, in order for Shares to be deemed validly tendered,
immediately upon Purchaser's payment for such Shares, Purchaser must be able to
exercise full voting rights with respect to such Shares and other securities,
including voting at any meeting of stockholders.

     The undersigned hereby represents and warrants that (a) the undersigned
has full power and authority to tender, sell, assign and transfer the Shares
(and any Distribution) tendered hereby and (b) when the Shares are accepted for
payment by Purchaser, Purchaser will acquire good, marketable and unencumbered
title to the Shares (and any Distribution), free and clear of all liens,
restrictions, charges and encumbrances, and the same will not be subject to any
adverse claim. The undersigned, upon request, will execute and deliver any
additional documents deemed by the Depositary or Purchaser to be necessary or
desirable to complete the sale, assignment and transfer of the Shares tendered
hereby (and any Distribution). In addition, the undersigned shall promptly
remit and transfer to the Depositary for the account of Purchaser any and all
Distributions in respect of the Shares tendered hereby, accompanied by
appropriate documentation of transfer; and pending such remittance or
appropriate assurance thereof, Purchaser will be, subject to applicable law,
entitled to all rights and privileges as owner of any such Distribution and may
withhold the entire purchase price or deduct from the purchase price the amount
or value thereof, as determined by Purchaser in its sole discretion.

     All authority herein conferred or agreed to be conferred shall not be
affected by and shall survive the death or incapacity of the undersigned and
any obligation of the undersigned hereunder shall be binding upon the heirs,
personal representatives, successors and assigns of the undersigned.

     Tenders of Shares made pursuant to the Offer may be withdrawn at any time
prior to the Expiration Date. Thereafter, such tenders are irrevocable except
that they may be withdrawn after May 3, 1999, unless theretofore accepted for
payment as provided in the Offer to Purchase. See Section 4 of the Offer to
Purchase.


                                       3
<PAGE>

     The undersigned understands that tenders of Shares pursuant to any of the
procedures described in Section 3 of the Offer to Purchase and in the
instructions hereto will constitute a binding agreement between the undersigned
and Purchaser upon the terms and subject to the conditions set forth in the
Offer, including the undersigned's representation that the undersigned owns the
Shares being tendered.

     Unless otherwise indicated herein under "Special Payment Instructions,"
please issue the check for the purchase price and/or issue or return any
certificate(s) for Shares not tendered or not accepted for payment in the
name(s) of the registered holder(s) appearing under "Description of Shares
Tendered." Similarly, unless otherwise indicated herein under "Special Delivery
Instructions," please mail the check for the purchase price and/or any
certificate(s) for Shares not tendered or not accepted for payment (and
accompanying documents, as appropriate) to the address(es) of the registered
holder(s) appearing under "Description of Shares Tendered." In the event that
both the Special Delivery Instructions and the Special Payment Instructions are
completed, please issue the check for the purchase price and/or any
certificate(s) for Shares not tendered or accepted for payment in the name of,
and deliver such check and/or such certificates to, the person or persons so
indicated. The undersigned recognizes that Purchaser has no obligation,
pursuant to the Special Payment Instructions, to transfer any Shares from the
name(s) of the registered holder(s) thereof if Purchaser does not accept for
payment any of the Shares so tendered.


                                       4
<PAGE>
- -------------------------------------------------------------------------------

                         SPECIAL PAYMENT INSTRUCTIONS
                       (SEE INSTRUCTIONS 1, 5, 6 AND 7)

         To be completed ONLY if certificate(s) for Shares not tendered or not
accepted for payment and/or the check for the purchase price of Shares accepted
for payment are to be issued in the name of someone other than the undersigned.


Issue    [ ] check    [ ] Certificate to:


Name 
    ---------------------------------------------------------------------------
                                 (PLEASE PRINT)

Address 
       ------------------------------------------------------------------------

- -------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

- -------------------------------------------------------------------------------
                        (TAX ID. OR SOCIAL SECURITY NO.)
                  (SEE SUBSTITUTE FORM W-9 ON THE REVERSE SIDE)

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





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

                         SPECIAL DELIVERY INSTRUCTIONS
                       (See Instructions 1, 5, 6 and 7)

         To be completed ONLY if certificate(s) for Shares not tendered or not
accepted for payment and/or the check for the purchase price of Shares accepted
for payment are to be sent to someone other than the undersigned or to the
undersigned at an address other than that shown above.


Mail    [ ] check    [ ] Certificate to:


Name 
    ---------------------------------------------------------------------------
                                 (PLEASE PRINT)

Address 
       ------------------------------------------------------------------------

- -------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

- -------------------------------------------------------------------------------
                        (TAX ID. OR SOCIAL SECURITY NO.)
                  (SEE SUBSTITUTE FORM W-9 ON THE REVERSE SIDE)

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

                                       5
<PAGE>
- -------------------------------------------------------------------------------
                                   SIGN HERE
                  AND COMPLETE SUBSTITUTE FORM W-9 ON REVERSE


X 
 ------------------------------------------------------------------------------

X 
 ------------------------------------------------------------------------------
                           (SIGNATURE(S) OF HOLDER(S)

Dated:

(Must be signed by the registered holder(s) exactly as name(s) appear(s) on
Share Certificate(s) or on a security position listing or by person(s)
authorized to become registered holder(s) by certificates and documents
transmitted herewith. If signature is by trustees, executors, administrators,
guardians, attorneys-in-fact, officers of corporations or others acting in a
fiduciary or representative capacity, please provide the following information
and see Instruction 5.)

Name(s)
       ------------------------------------------------------------------------
                                 (PLEASE PRINT)

Capacity (full title)
                     ----------------------------------------------------------
              
Address
       ------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Area Code and Telephone Number
                              -------------------------------------------------
                 
Tax Identification or
Social Security No.
                   ------------------------------------------------------------


                     COMPLETE SUBSTITUTE FORM W-9 ON REVERSE
                            GUARANTEE OF SIGNATURE(S)
                           (SEE INSTRUCTIONS 1 AND 5)


AUTHORIZED SIGNATURE
                    -----------------------------------------------------------
                              
NAME
    ---------------------------------------------------------------------------

NAME OF FIRM
            -------------------------------------------------------------------
                                 (PLEASE PRINT)

ADDRESS
       ------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

AREA CODE AND TELEPHONE NUMBER
                              -------------------------------------------------
                        
DATED:
      -------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                        6
<PAGE>

                                 INSTRUCTIONS

             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER

     1. GUARANTEE OF SIGNATURES. No signature guarantee is required on this
Letter of Transmittal (a) if this Letter of Transmittal is signed by the
registered holder(s) of Shares tendered herewith, unless such holder(s) has
completed either the box entitled "Special Payment Instructions" or the box
entitled "Special Delivery Instructions" above or (b) if such Shares are
tendered for the account of a firm which is a bank, broker, dealer, credit
union, savings association or other entity which is a member in good standing
of the Securities Transfer Agents Medallion Program (each of the foregoing
being referred to as an "Eligible Institution"). In all other cases, all
signatures on this Letter of Transmittal must be guaranteed by an Eligible
Institution. See Instruction 5 of this Letter of Transmittal.

     2. REQUIREMENTS OF TENDER. This Letter of Transmittal is to be completed
by stockholders either if Share Certificates are to be forwarded herewith or,
unless an Agent's Message is utilized, if tenders are to be made pursuant to
the procedure for tender by book-entry transfer set forth in Section 3 of the
Offer to Purchase. Share Certificates evidencing tendered Shares, or timely
confirmation (a "Book-Entry Confirmation") of a book-entry transfer of such
Shares into the Depositary's account at the Book-Entry Transfer Facility, as
well as this Letter of Transmittal (or a facsimile hereof), properly completed
and duly executed, with any required signature guarantees, or an Agent's
Message in connection with a book-entry transfer, and any other documents
required by this Letter of Transmittal, must be received by the Depositary at
one of its addresses set forth herein prior to the Expiration Date (as defined
in Section 1 of the Offer to Purchase). Stockholders whose Share Certificates
are not immediately available or who cannot deliver their Share Certificates
and all other required documents to the Depositary prior to the Expiration Date
or who cannot complete the procedure for delivery by book-entry transfer on a
timely basis may tender their Shares by properly completing and duly executing
a Notice of Guaranteed Delivery pursuant to the guaranteed delivery procedure
set forth in Section 3 of the Offer to Purchase. Pursuant to such procedure:
(i) such tender must be made by or through an Eligible Institution; (ii) a
properly completed and duly executed Notice of Guaranteed Delivery,
substantially in the form made available by the Purchaser, must be received by
the Depositary prior to the Expiration Date; and (iii) the Share Certificates
(or a Book-Entry Confirmation) representing all tendered Shares, in proper form
for transfer, in each case together with the Letter of Transmittal (or a
facsimile thereof), properly completed and duly executed, with any required
signature guarantees (or, in the case of a book-entry delivery, an Agent's
Message) and any other documents required by this Letter of Transmittal, must
be received by the Depositary within three New York Stock Exchange trading days
after the date of execution of such Notice of Guaranteed Delivery.

     THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, SHARE CERTIFICATES
AND ALL OTHER REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH THE BOOK-ENTRY
TRANSFER FACILITY, IS AT THE OPTION AND RISK OF THE TENDERING STOCKHOLDER. IF
DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY
INSURED, IS RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO
ENSURE TIMELY DELIVERY.

     No alternative, conditional or contingent tenders will be accepted and no
fractional Shares will be purchased. All tendering stockholders, by execution
of this Letter of Transmittal (or a facsimile hereof), waive any right to
receive any notice of the acceptance of their Shares for payment.

     3. INADEQUATE SPACE. If the space provided herein is inadequate, the Share
Certificate numbers and/or the number of Shares and any other required
information should be listed on a separate signed schedule attached hereto.

     4. PARTIAL TENDERS. (Not Applicable to Book-Entry Stockholders) If fewer
than all the Shares evidenced by any Share Certificate submitted are to be
tendered, fill in the number of Shares which are to be tendered in the box
entitled "Number of Shares Tendered." In such cases, new Share Certificates for
the Shares that were evidenced by your old Share Certificates, but were not
tendered by you, will be sent to you, unless otherwise provided in the
appropriate box on this Letter of Transmittal, as soon as practicable after the
Expiration Date. All Shares represented by Share Certificates delivered to the
Depositary will be deemed to have been tendered unless otherwise indicated.

     5. SIGNATURES ON LETTER OF TRANSMITTAL, STOCK POWERS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder(s) of the Shares
tendered hereby, the signature(s) must correspond with the name(s) as written
on the face of the Share Certificate(s) without alteration, enlargement or any
change whatsoever.

     If any of the Shares tendered hereby are owned of record by two or more
joint owners, all such owners must sign this Letter of Transmittal.


                                       7
<PAGE>

     If any of the tendered Shares are registered in different names on several
Share Certificates, it will be necessary to complete, sign and submit as many
separate Letters of Transmittal as there are different registrations of Share
Certificates.

     If this Letter of Transmittal or any Share Certificates or stock powers
are signed by trustees, executors, administrators, guardians,
attorneys-in-fact, officers of corporations or others acting in a fiduciary or
representative capacity, such persons should so indicate when signing, and
proper evidence satisfactory to Purchaser of their authority so to act must be
submitted.

     If this Letter of Transmittal is signed by the registered holder(s) of the
Shares listed and transmitted hereby, no endorsements of Share Certificates or
separate stock powers are required unless payment is to be made to or Share
Certificates for Shares not tendered or not purchased are to be issued in the
name of a person other than the registered holder(s). Signatures on such Share
Certificates or stock powers must be guaranteed by an Eligible Institution.

     If this Letter of Transmittal is signed by a person other than the
registered holder(s) of the Share Certificate(s) listed, the certificate(s)
must be endorsed or accompanied by appropriate stock powers, in either case
signed exactly as the name(s) of the registered holder(s) appear(s) on the
Share Certificate(s). Signatures on such Share Certificates or stock powers
must be guaranteed by an Eligible Institution.

     6. STOCK TRANSFER TAXES. Except as otherwise provided in this Instruction
6, Purchaser will pay any stock transfer taxes with respect to the transfer and
sale of Shares to it or its order pursuant to the Offer. If, however, payment
of the purchase price is to be made to, or if certificate(s) for Shares not
tendered or accepted for payment are to be registered in the name of, any
person other than the registered holder(s), or if tendered Share Certificate(s)
are registered in the name of any person other than the person(s) signing this
Letter of Transmittal, the amount of any stock transfer taxes (whether imposed
on the registered holder(s) or such person) payable on account of the transfer
to such person will be deducted from the purchase price unless satisfactory
evidence of the payment of such taxes or an exemption therefrom, is submitted.

     EXCEPT AS OTHERWISE PROVIDED IN THIS INSTRUCTION 6, IT WILL NOT BE
NECESSARY FOR TRANSFER TAX STAMPS TO BE AFFIXED TO THE SHARE CERTIFICATE(S)
LISTED IN THIS LETTER OF TRANSMITTAL.

     7. SPECIAL PAYMENT AND DELIVERY INSTRUCTIONS. If a check is to be issued
in the name of, and/or certificates for Shares not tendered or not accepted for
payment are to be issued or returned to, a person other than the signer of this
Letter of Transmittal or if a check and/or such Share Certificates are to be
returned to a person other than the person(s) signing this Letter of
Transmittal or to an address other than that shown in this Letter of
Transmittal, the appropriate boxes on this Letter of Transmittal must be
completed.

     8. WAIVER OF CONDITIONS. Subject to the terms and conditions of the Merger
Agreement, the conditions of the Offer (other than the Minimum Condition) may
be waived by Purchaser in whole or in part at any time and from time to time in
its sole discretion.

     9. 31% BACKUP WITHHOLDING; SUBSTITUTE FORM W-9. Under U.S. Federal income
tax law, a stockholder whose tendered Shares are accepted for payment is
required to provide the Depositary with such stockholder's correct taxpayer
identification number ("TIN") on the Substitute Form W-9 below. If the
Depositary is not provided with the correct TIN, the Internal Revenue Service
may subject the stockholder or other payee to a $50 penalty. In addition,
payments that are made to such stockholder or other payee with respect to
Shares purchased pursuant to the Offer may be subject to 31% backup
withholding.

     Certain stockholders (including, among others, all corporations and
certain foreign individuals) are not subject to these backup withholding and
reporting requirements. In order for a foreign individual to qualify as an
exempt recipient, the stockholder must submit a Form W-8, signed under
penalties of perjury, attesting to that individual's exempt status. A Form W-8
can be obtained from the Depositary. See the enclosed "Guidelines for
Certification of Taxpayer Identification Number on Substitute Form W-9" for
more instructions.

     If backup withholding applies, the Depositary is required to withhold 31%
of any such payments made to the stockholder or other payee. Backup withholding
is not an additional tax. Rather, the tax liability of persons subject to
backup withholding will be reduced by the amount of tax withheld. If
withholding results in an overpayment of taxes, a refund may be obtained from
the Internal Revenue Service.


                                       8
<PAGE>

     The box in Part 3 of the Substitute Form W-9 may be checked if the
tendering stockholder has not been issued a TIN and has applied for a TIN or
intends to apply for a TIN in the near future. If the box in Part 3 is checked,
the stockholder or other payee must also complete the Certificate of Awaiting
Taxpayer Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 3 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Depositary will
withhold 31% of all payments made prior to the time a properly certified TIN is
provided to the Depositary.


     The stockholder is required to give the Depositary the TIN (e.g., social
security number or employer identification number) of the record owner of the
Shares or of the last transferee appearing on the transfers attached to, or
endorsed on, the Shares. If the Shares are in more than one name or are not in
the name of the actual owner, consult the enclosed "Guidelines for
Certification of Taxpayer Identification Number on Substitute Form W-9" for
additional guidance on which number to report.


     10. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. Questions or requests
for assistance may be directed to the Dealer Manager or the Information Agent
at their respective addresses and telephone numbers set forth below. Additional
copies of the Offer to Purchase, this Letter of Transmittal and the Notice of
Guaranteed Delivery may also be obtained from the Information Agent or from
brokers, dealers, commercial banks or trust companies.


     11. LOST, DESTROYED OR STOLEN CERTIFICATES. If any Share Certificate
representing Shares has been lost, destroyed or stolen, the stockholder should
promptly notify the Depositary at (800) 313-9450. The stockholder will then be
instructed as to the steps that must be taken in order to replace the Share
Certificate. This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost or destroyed certificates
have been followed.


     IMPORTANT: THIS LETTER OF TRANSMITTAL (OR A FACSIMILE HEREOF), TOGETHER
WITH SHARE CERTIFICATES OR CONFIRMATION OF BOOK ENTRY TRANSFER OR THE NOTICE OF
GUARANTEED DELIVERY, AND ALL OTHER REQUIRED DOCUMENTS, MUST BE RECEIVED BY THE
DEPOSITARY PRIOR TO THE EXPIRATION DATE.


                                       9
<PAGE>

                 TO BE COMPLETED BY ALL TENDERING STOCKHOLDERS
                              (SEE INSTRUCTION 9)



<TABLE>
<S>                          <C>                                            <C>
                         PAYER'S NAME: CHASEMELLON SHAREHOLDER SERVICES, L.L.C.
- --------------------------------------------------------------------------------------------------------
                             PART 1 -- PLEASE PROVIDE YOUR TIN IN THE BOX    Social Security Number
 SUBSTITUTE                  AT THE RIGHT AND CERTIFY BY SIGNING AND               or Employer
                             DATING BELOW.                                    Identification Number
 FORM W-9                                                                    
 DEPARTMENT OF THE TREASURY                                                   ---------------------
 INTERNAL REVENUE SERVICE    ---------------------------------------------------------------------------
                             PART 2 -- CERTIFICATION -- Under penalties of perjury, I certify that:
 PAYER'S REQUEST FOR
 TAXPAYER IDENTIFICATION     (1) The number shown on this form is my correct Taxpayer Identification
 NUMBER ("TIN")                  Number (or I am waiting for a number to be issued to me) and

                             (2) I am not subject to backup withholding because: (a) I am exempt from
                                 backup withholding, or (b) I have not been notified by the Internal
                                 Revenue Service (the "IRS") that I am subject to backup withholding as
                                 a result of a failure to report all interest or dividends, or (c) the
                                 IRS has notified me that I am no longer subject to backup withholding.
                           
                             CERTIFICATION INSTRUCTIONS -- You must cross out item (2) above if you
                             have been notified by the IRS that you are currently subject to backup
                             withholding because of under-reporting interest or dividends on your
                             tax return. However, if after being notified by the IRS that you were
                             subject to backup withholding you received another notification from
                             the IRS that you are no longer subject to backup withholding, do not
                             cross out such Item (2).
     
                 SIGN HERE-> SIGNATURE:                                 DATE:                     
                                       ------------------------------        ---------------------------
                             ---------------------------------------------------------------------------
                             PART 3 -- AWAITING TIN  [ ]
- --------------------------------------------------------------------------------------------------------
</TABLE>

NOTE:    FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP
         WITHHOLDING OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE MERGER.
         PLEASE REVIEW THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER
         IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.

         YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX IN
         PART 3 OF SUBSTITUTE FORM W-9.

- -------------------------------------------------------------------------------
             CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

I certify under penalties of perjury that a taxpayer identification number has
not been issued to me, and either (1) I have mailed or delivered an application
to receive a taxpayer identification number to the appropriate Internal Revenue
Service Center or Social Security Administration Office, or (2) I intend to mail
or deliver an application in the near future. I understand that if I do not
provide a taxpayer identification number by the time of payment, 31% of all
reportable payments made to me will be withheld.

Signature:                                     Date:                           
          -----------------------------------       ---------------------------
- -------------------------------------------------------------------------------

                                       10
<PAGE>

                    The Information Agent for the Offer is:

                             D.F. KING & CO., INC.
                                77 Water Street
                         New York, New York 10005-4495

                Banks and Brokers Call Collect: (212) 269-5550
                   ALL OTHERS CALL TOLL-FREE: (800) 755-7250



                     The Dealer Manager for the Offer is:


                                LEHMAN BROTHERS

                         Three World Financial Center
                               200 Vesey Street
                           New York, New York 10285

                Call Collect: (212) 526-8376 or (212) 526-1162


March 5, 1999




<PAGE>

                         NOTICE OF GUARANTEED DELIVERY

                                      TO

                         TENDER SHARES OF COMMON STOCK

                                      OF

                               AYDIN CORPORATION

     As set forth in Section 3 of the Offer to Purchase described below, this
instrument or one substantially equivalent hereto must be used to accept the
Offer (as defined below) if certificates for Shares (as defined below) are not
immediately available or the certificates for Shares and all other required
documents cannot be delivered to ChaseMellon Shareholder Services, L.L.C. (the
"Depositary") prior to the Expiration Date (as defined in Section 1 of the
Offer to Purchase) or if the procedure for delivery by book-entry transfer
cannot be completed on a timely basis. This instrument may be delivered by hand
or transmitted by facsimile transmission or mail to the Depositary.

                        The Depositary for the Offer is:

                   CHASEMELLON SHAREHOLDER SERVICES, L.L.C.





<TABLE>
<S>                                  <C>                         <C>
              By Mail:                       By Hand:                  By Overnight Delivery:
      Reorganization Department      Reorganization Department       Reorganization Department
          Post Office Box 3301              120 Broadway                 85 Challenger Road
South Hackensack, New Jersey 07606           13th Floor                   Mail Stop-Reorg
                                      New York, New York 10271   Ridgefield Park, New Jersey 07660
 
      By Facsimile Transmission:                                  Confirm Receipt of Facsimile by
  (For Eligible Institutions Only)                                        Telephone Only:
              (201) 296-4293                                               (201) 296-4860
</TABLE>

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE OR
TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE TRANSMISSION OTHER THAN AS SET FORTH
ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

     THIS FORM IS NOT TO BE USED TO GUARANTEE SIGNATURES. IF A SIGNATURE ON A
LETTER OF TRANSMITTAL IS REQUIRED TO BE GUARANTEED BY AN ELIGIBLE INSTITUTION
UNDER THE INSTRUCTIONS THERETO, SUCH SIGNATURE GUARANTEE MUST APPEAR IN THE
APPLICABLE SPACE PROVIDED IN THE SIGNATURE BOX IN THE LETTER OF TRANSMITTAL.

              THE GUARANTEE ON THE REVERSE SIDE MUST BE COMPLETED
<PAGE>

Ladies and Gentlemen:

     The undersigned hereby tender(s) to Angel Acquisition Corporation, a
Delaware corporation and a wholly owned subsidiary of L-3 Communications
Corporation, a Delaware corporation and a wholly owned subsidiary of L-3
Communications Holdings, Inc., a Delaware corporation, upon the terms and
subject to the conditions set forth in the Offer to Purchase dated March 5,
1999 (the "Offer to Purchase"), and in the related Letter of Transmittal
(which, as amended from time to time, together constitute the "Offer"), receipt
of which is hereby acknowledged, the number of shares of Common Stock, par
value $1.00 per share (the "Shares"), of Aydin Corporation, a Delaware
corporation, pursuant to the guaranteed delivery procedure set forth in Section
3 of the Offer to Purchase.

                -------------------------------------------------
                  Signature(s) 
                              -------------------------------
                  
                  Name(s) of Record Holders
                  
                  -------------------------------------------
                            Please Type or Print
                  
                  Number of Shares
                                  ---------------------------
                  
                  Certificate Nos. (If Available)
                  
                  -------------------------------------------
                  
                  -------------------------------------------
                  
                  Dated 
                       --------------------------
                -------------------------------------------------
                  

                -------------------------------------------------
                  Address(es)
                             --------------------------------
                  
                  -------------------------------------------
                                                     ZIP CODE
                  
                  Area Code and Tel. No(s)
                                          -------------------
                  
                  Check box if Shares will be tendered by 
                  book-entry transfer
                  
                  [ ] The Depository Trust Company
                  
                  Account Number
                                -----------------------------
                  
                  -------------------------------------------
                -------------------------------------------------

                                   GUARANTEE
                   (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a firm which is a bank, broker, dealer, credit union,
savings association or other entity which is a member in good standing of the
Securities Transfer Agents Medallion Program, (a) represents that the above
named person(s) "own(s)" the Shares tendered hereby within the meaning of Rule
14e-4 under the Securities Exchange Act of 1934, as amended ("Rule 14e-4"), (b)
represents that such tender of Shares complies with Rule 14e-4, and (c)
guarantees to deliver to the Depositary either the certificates evidencing all
tendered Shares, in proper form for transfer, or to deliver Shares pursuant to
the procedure for book-entry transfer into the Depositary's account at The
Depository Trust Company (the "Book-Entry Transfer Facility"), in either case
together with the Letter of Transmittal (or a facsimile thereof), properly
completed and duly executed, with any required signature guarantees or an
Agent's Message (as defined in the Offer to Purchase) in the case of a
book-entry delivery, and any other required documents, all within three New
York Stock Exchange trading days after the date hereof.

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

                   ---------------------------------------------
                                  Name of Firm

                   ---------------------------------------------
                                     Address

                   ---------------------------------------------
                                    Zip Code

                   AREA CODE AND TEL. NO.
                                         -----------------------
                -------------------------------------------------



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

                  ---------------------------------------------
                             AUTHORIZED SIGNATURE

                  Name
                      -----------------------------------------
                                PLEASE TYPE OR PRINT

                  Title 
                       ----------------------------------------

                  Dated
                       ----------------------------------------
                -------------------------------------------------


  NOTE: DO NOT SEND CERTIFICATES FOR SHARES WITH THIS NOTICE. CERTIFICATES
        SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL.


<PAGE>

                          OFFER TO PURCHASE FOR CASH
                    ALL OUTSTANDING SHARES OF COMMON STOCK

                                      OF

                               AYDIN CORPORATION

                                      AT
                             $13.50 NET PER SHARE
                                      BY

                         ANGEL ACQUISITION CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                         L-3 COMMUNICATIONS CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                       L-3 COMMUNICATIONS HOLDINGS, INC.

- -------------------------------------------------------------------------------
THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
        TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE OFFER IS EXTENDED.
- -------------------------------------------------------------------------------

                                                                  March 5, 1999

To Brokers, Dealers, Commercial Banks,
Trust Companies and Other Nominees:

     We have been appointed by Angel Acquisition Corporation, a Delaware
corporation ("Purchaser") and a wholly owned subsidiary of L-3 Communications
Corporation, a Delaware corporation ("Parent") and a wholly owned subsidiary of
L-3 Communications Holdings, Inc., a Delaware corporation ("Holdings"), to act
as Dealer Manager in connection with Purchaser's offer to purchase for cash all
the outstanding shares of Common Stock, par value $1.00 per share (the
"Shares"), of Aydin Corporation, a Delaware corporation (the "Company") at a
purchase price of $13.50 per Share, net to the seller in cash, without interest
thereon, upon the terms and subject to the conditions set forth in the Offer to
Purchase, dated March 5, 1999 (the "Offer to Purchase"), and in the related
Letter of Transmittal (which, as amended from time to time, together constitute
the "Offer") enclosed herewith. Holders of Shares whose certificates for such
Shares (the "Share Certificates") are not immediately available or who cannot
deliver their Share Certificates and all other required documents to the
Depositary (as defined below) prior to the Expiration Date (as defined in the
Offer to Purchase), or who cannot complete the procedures for book-entry
transfer on a timely basis, must tender their Shares according to the
guaranteed delivery procedures set forth in Section 3 of the Offer to Purchase.
 

     Please furnish copies of the enclosed materials to those of your clients
for whom you hold Shares registered in your name or in the name of your
nominee.

     Enclosed herewith for your information and forwarding to your clients are
copies of the following documents:

          1. The Offer to Purchase;

          2. The Letter of Transmittal to tender Shares for your use and for the
     information of your clients. Facsimile copies of the Letter of Transmittal
     may be used to tender Shares;

          3. The Notice of Guaranteed Delivery for Shares to be used to accept
     the Offer if Share Certificates are not immediately available or if such
     Share Certificates and all other required documents cannot be delivered to
     ChaseMellon Shareholder Services, L.L.C. (the "Depositary") by the
     Expiration Date or if the procedure for book-entry transfer cannot be
     completed by the Expiration Date;

          4. The Letter to Stockholders of the Company from the Chairman of the
     Board of the Company, accompanied by the Company's
     Solicitation/Recommendation Statement on Schedule 14D-9;
<PAGE>

          5. A printed form of letter which may be sent to your clients for
     whose accounts you hold Shares registered in your name or in the name of
     your nominee, with space provided for obtaining such clients' instructions
     with regard to the Offer;

          6. Guidelines of the Internal Revenue Service for Certification of
     Taxpayer Identification Number on Substitute Form W-9; and

          7. A return envelope addressed to the Depositary.

     YOUR PROMPT ACTION IS REQUESTED. WE URGE YOU TO CONTACT YOUR CLIENTS AS
PROMPTLY AS POSSIBLE. PLEASE NOTE THAT THE OFFER AND WITHDRAWAL RIGHTS EXPIRE
AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE
OFFER IS EXTENDED.

     In order to take advantage of the Offer, (i) a duly executed and properly
completed Letter of Transmittal and any required signature guarantees, or an
Agent's Message (as defined in the Offer to Purchase) in connection with a
book-entry delivery of Shares, and other required documents should be sent to
the Depositary and (ii) either Share Certificates representing the tendered
Shares should be delivered to the Depositary, or such Shares should be tendered
by book-entry transfer into the Depositary's account maintained at the
Book-Entry Transfer Facility (as described in the Offer to Purchase), all in
accordance with the instructions set forth in the Letter of Transmittal and the
Offer to Purchase.

     If holders of Shares wish to tender, but it is impracticable for them to
forward their Share Certificates or other required documents on or prior to the
Expiration Date or to comply with the book-entry transfer procedures on a
timely basis, a tender may be effected by following the guaranteed delivery
procedures specified in Section 3 of the Offer to Purchase.

     Purchaser will not pay any commissions or fees to any broker, dealer or
other person (other than the Dealer Manager, the Depositary and D.F. King &
Co., Inc. (the "Information Agent") (as described in the Offer to Purchase))
for soliciting tenders of Shares pursuant to the Offer. Purchaser will,
however, upon request, reimburse you for customary clerical and mailing
expenses incurred by you in forwarding any of the enclosed materials to your
clients. Purchaser will pay or cause to be paid any stock transfer taxes
payable on the transfer of Shares to it, except as otherwise provided in
Instruction 6 of the Letter of Transmittal.

     Any inquiries you may have with respect to the Offer should be addressed
to Lehman Brothers Inc., the Dealer Manager, or the Information Agent, at their
respective addresses and telephone numbers set forth on the back cover of the
Offer to Purchase. Additional copies of the enclosed materials may be obtained
from the Information Agent.

                                        Very truly yours,


                                        LEHMAN BROTHERS


- -------------------------------------------------------------------------------
 NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR
 ANY OTHER PERSON, THE AGENT OF PURCHASER, PARENT, HOLDINGS, THE DEALER
 MANAGER, THE COMPANY, THE DEPOSITARY OR THE INFORMATION AGENT, OR ANY
 AFFILIATE OF ANY OF THEM, OR AUTHORIZE YOU OR ANY OTHER PERSON TO MAKE ANY
 STATEMENT OR USE ANY DOCUMENT ON BEHALF OF ANY OF THEM IN CONNECTION WITH THE
 OFFER OTHER THAN THE ENCLOSED DOCUMENTS AND THE STATEMENTS CONTAINED THEREIN.
- -------------------------------------------------------------------------------
 
 


<PAGE>

                          OFFER TO PURCHASE FOR CASH
                    ALL OUTSTANDING SHARES OF COMMON STOCK

                                      OF

                               AYDIN CORPORATION

                                      AT
                             $13.50 NET PER SHARE
                                      BY

                         ANGEL ACQUISITION CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                         L-3 COMMUNICATIONS CORPORATION
                          A WHOLLY OWNED SUBSIDIARY OF

                       L-3 COMMUNICATIONS HOLDINGS, INC.

- -------------------------------------------------------------------------------
THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
        TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE OFFER IS EXTENDED.
- -------------------------------------------------------------------------------

To Our Clients:

     Enclosed for your consideration is an Offer to Purchase dated March 5,
1999 (the "Offer to Purchase"), and the related Letter of Transmittal (which,
as amended from time to time, together constitute the "Offer") relating to the
offer by Angel Acquisition Corporation, a Delaware corporation ("Purchaser")
and a wholly owned subsidiary of L-3 Communications Corporation, a Delaware
corporation ("Parent") and a wholly owned subsidiary of L-3 Communications
Holdings, Inc., a Delaware corporation ("Holdings"), to purchase all of the
outstanding shares of Common Stock, par value $1.00 per share (the "Shares"),
of Aydin Corporation, a Delaware corporation (the "Company"), at a purchase
price of $13.50 per Share, net to the seller in cash, without interest thereon,
upon the terms and subject to the conditions set forth in the Offer. We are the
holder of record of Shares held by us for your account. A tender of such Shares
can be made only by us as the holder of record and pursuant to your
instructions. The Letter of Transmittal is furnished to you for your
information only and cannot be used by you to tender Shares held by us for your
account.

     We request instructions as to whether you wish to have us tender on your
behalf any or all of such Shares held by us for your account, pursuant to the
terms and subject to the conditions set forth in the Offer to Purchase.

     Your attention is directed to the following:

          1. The tender price is $13.50 per Share, net to the seller in cash
     without interest thereon.

          2. The Offer is made for all of the outstanding Shares.

          3. The Board of Directors of the Company has unanimously determined
     that the Merger Agreement (as defined below) and the transactions
     contemplated thereby, including each of the Offer and the Merger (as
     defined below), are advisable and fair to, and in the best interests of the
     Company and its stockholders and resolved to recommend that the holders of
     the Shares accept the Offer and tender their Shares to Purchaser.

          4. The Offer is being made pursuant to the Agreement and Plan of
     Merger, dated as of March 1, 1999 (the "Merger Agreement"), which provides
     that subsequent to the consummation of the Offer, Purchaser will merge with
     and into the Company (the "Merger"). At the effective time of the Merger
     (the "Effective Time"), each Share issued and outstanding immediately prior
     to the Effective Time (other than each Share owned by Parent, Purchaser or
     any other wholly owned subsidiary of Parent and any Shares issued and
     outstanding immediately prior to the Effective Time and held by
     stockholders who have not voted in favor of or consented to the Merger in
     writing and who have demanded appraisal of their Shares in accordance with
     Section 262 of the Delaware General Corporation Law) will, by virtue of the
     Merger and without any action on the part of the holders of any Share or
     Shares of common stock of Purchaser, be converted into and become the right
     to receive $13.50 in cash, without interest, less any required withholding
     taxes.

          5. The Offer and withdrawal rights will expire at 12:00 Midnight, New
     York City time, on Thursday, April 1, 1999, unless the Offer is extended.
<PAGE>

          6. Tendering stockholders will not be obligated to pay brokerage fees
     or commissions or, except as set forth in Instruction 6 of the Letter of
     Transmittal, stock transfer taxes on the purchase of Shares pursuant to the
     Offer.

          7. The Offer is conditioned upon, among other things, (i) there being
     validly tendered and not properly withdrawn prior to the expiration of the
     Offer at least a majority of the Shares outstanding on a fully diluted
     basis as of the expiration of the Offer and (ii) the expiration or
     termination of any waiting periods under the Hart-Scott-Rodino Antitrust
     Improvements Act of 1976, as amended.

     The Offer is being made solely by the Offer to Purchase and the related
Letter of Transmittal and any ancillary documents thereto and is being made to
all holders of Shares. Purchaser is not aware of any state where the making of
the Offer is prohibited by administrative or judicial action pursuant to any
valid state statute. If Purchaser becomes aware of any valid state statute
prohibiting the making of the Offer, Purchaser will make a good faith effort to
comply with such statute. If, after such good faith effort, Purchaser cannot
comply with such state statute, the Offer will not be made to nor will tenders
be accepted from or on behalf of the holders of Shares in such state. In any
jurisdiction where the securities, "blue sky" or other laws require the Offer
to be made by a licensed broker or dealer, the Offer shall be deemed to be made
on behalf of Purchaser by Lehman Brothers Inc., as Dealer Manager, or one or
more registered brokers or dealers licensed under the laws of such
jurisdiction.


     IF YOU WISH TO HAVE US TENDER ANY OR ALL OF THE SHARES HELD BY US FOR YOUR
ACCOUNT, PLEASE INSTRUCT US BY COMPLETING, EXECUTING AND RETURNING TO US THE
INSTRUCTION FORM CONTAINED IN THIS LETTER. IF YOU AUTHORIZE A TENDER OF YOUR
SHARES, ALL SUCH SHARES WILL BE TENDERED UNLESS OTHERWISE SPECIFIED IN SUCH
INSTRUCTION FORM. YOUR INSTRUCTIONS SHOULD BE FORWARDED TO US IN AMPLE TIME TO
PERMIT US TO SUBMIT A TENDER ON YOUR BEHALF PRIOR TO THE EXPIRATION OF THE
OFFER.
<PAGE>

                       INSTRUCTIONS WITH RESPECT TO THE
                          OFFER TO PURCHASE FOR CASH
                    ALL OUTSTANDING SHARES OF COMMON STOCK

                                      OF

                               AYDIN CORPORATION

                                      BY
                         ANGEL ACQUISITION CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                         L-3 COMMUNICATIONS CORPORATION
                         A WHOLLY OWNED SUBSIDIARY OF

                       L-3 COMMUNICATIONS HOLDINGS, INC.

     The undersigned acknowledge(s) receipt of your letter enclosing the Offer
to Purchase dated March 5, 1999 (the "Offer to Purchase"), and the related
Letter of Transmittal pursuant to an offer by Angel Acquisition Corporation, a
Delaware corporation and a wholly owned subsidiary of L-3 Communications
Corporation, a Delaware corporation and a wholly owned subsidiary of L-3
Communications Holdings, Inc., a Delaware Corporation, to purchase all
outstanding shares of Common Stock, par value $1.00 per share (the "Shares"),
of Aydin Corporation, a Delaware corporation, at a purchase price of $13.50 per
Share, net to the seller in cash, without interest thereon, upon the terms and
subject to the conditions set forth in the Offer to Purchase and the related
Letter of Transmittal.

     This will instruct you to tender the number of Shares indicated below (or,
if no number is indicated below, all Shares) which are held by you for the
account of the undersigned, upon the terms and subject to the conditions set
forth in the Offer to Purchase and in the related Letter of Transmittal
furnished to the undersigned.

- -------------------------------------------------------------------------------
DATE:
     -----------------------

                        NUMBER OF SHARES TO BE TENDERED:*
                                                        
                                           SHARES
                               ------------


                                    SIGN HERE
- -------------------------------------------------------------------------------
                               
- -------------------------------------------------------------------------------
                                  SIGNATURE(S)


- -------------------------------------------------------------------------------
                              PLEASE PRINT NAME(S)


- -------------------------------------------------------------------------------
                              
- -------------------------------------------------------------------------------
                                   ADDRESS(ES)


- -------------------------------------------------------------------------------
                         AREA CODE AND TELEPHONE NUMBER


- -------------------------------------------------------------------------------
                TAXPAYER IDENTIFICATION OR SOCIAL SECURITY NUMBER

                                   
 -----------------
 * Unless otherwise indicated, it will be assumed that all Shares held by
   us for your account are to be tendered.
- -------------------------------------------------------------------------------
 


<PAGE>


            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER FOR THE PAYEE (YOU)
TO GIVE THE PAYER.--Social security numbers have nine digits separated by two
hyphens: i.e., 000-00-0000. Employee identification numbers have nine digits
separated by only one hyphen: i.e., 00-0000000. The table below will help
determine the number to give the payer. All "Section" references are to the
Internal Revenue Code of 1986, as amended. "IRS" is the Internal Revenue
Service.




<TABLE>
<CAPTION>
- -----------------------------------------------------------------
                                  Give the social security number
For this type of account:         of--
- -----------------------------------------------------------------
<S>                              <C>   
1.  Individual                    The individual
2.  Two or more                   The actual owner of the
    individuals (joint            account or, if combined
    account)                      funds, the first individual
                                  on the account1
3.  Custodian account of a        The minor2
    minor (Uniform Gift to     
    Minors Act)                
4.  a. The usual                  The grantor-trustee1
       revocable savings       
       trust account           
       (grantor is also        
       trustee)                
    b. So-called trust            The actual owner1
       account that is not     
       a legal or valid        
       trust under state       
       law                     
5.  Sole proprietorship           The owner3
6.  Sole proprietorship           The owner3
7.  A valid trust, estate, or     The legal entity4
    pension trust
8.  Corporate                     The corporation
9.  Association, club,            The organization
    religious, charitable,
    educational, or other
    tax-exempt
    organization account
10. Partnership                   The partnership
11. A broker or registered        The broker or nominee
    nominee
12. Account with the              The public entity
    Department of
    Agriculture in the
    name of a public entity
    (such as a state or local
    government, school
    district, or prison) that
    receives agricultural
    program payments
</TABLE>

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

1  List first and circle the name of the person whose number you furnish. If
   only one person on a joint account has a social security number, that
   person's number must be furnished.
2  Circle the minor's name and furnish the minor's social security number.

3  You must show your individual name, but you may also enter your business or
   "doing business as" name. You may use either your social security number or
   your employer identification number (if you have one).

4  List first and circle the name of the legal trust, estate, or pension trust.
   (Do not furnish the taxpayer identification number of the personal
   representative or trustee unless the legal entity itself is not designated
   in the account title.)

NOTE: If no name is circled when there is more than one name, the number will
be considered to be that of the first name listed.
<PAGE>

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

OBTAINING A NUMBER

If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5. Application for a Social Security Card, at the local
Social Administration office, or Form SS-4, Application for Employer
Identification Number, by calling 1 (800) TAX-FORM, and apply for a number.

PAYEES EXEMPT FROM BACKUP WITHHOLDING

Payees specifically exempted from withholding include:
 o  An organization exempt from tax under Section 501(a), an individual
    retirement account (IRA), or a custodial account under Section 403(b)(7),
    if the account satisfies the requirements of Section 401(f)(2).
 o  The United States or a state thereof, the District of Columbia, a
    possession of the United States, or a political subdivision or
    wholly-owned agency or instrumentality of any one or more of the
    foregoing.
 o  An international organization or any agency or instrumentality thereof.
 o  A foreign government and any political subdivision, agency or
    instrumentality thereof.

Payees that may be exempt from backup withholding include:
 o  A corporation.
 o  A financial institution.
 o  A dealer in securities or commodities required to register in the United
    States, the District of Columbia, or a possession of the United States.
 o  A real estate investment trust.
 o  A common trust fund operated by a bank under Section 584(a).
 o  An entity registered at all times during the tax year under the Investment
    Company Act of 1940.
 o  A middleman known in the investment community as a nominee or who is listed
    in the most recent publication of the American Society of Corporate
    Secretaries, Inc., Nominee List.
 o  A futures commission merchant registered with the Commodity Futures Trading
    Commission.
 o  A foreign central bank of issue.

Payments of dividends and patronage dividends generally exempt from backup
withholding include:
 o  Payments to nonresident aliens subject to withholding under Section 1441.
 o  Payments to partnerships not engaged in a trade or business in the United
    States and that have at least one nonresident alien partner.
 o  Payments of patronage dividends not paid in money.
 o  Payments made by certain foreign organizations.
 o  Section 404(k) payments made by an ESOP.

Payments of interest generally exempt from backup withholding include:
 o  Payments of interest on obligations issued by individuals. Note: You may be
    subject to backup withholding if this interest is $600 or more and you
    have not provided your correct taxpayer identification number to the
    payer.
 o  Payments of tax-exempt interest (including exempt-interest dividends

under Section 852).
 o  Payments described in Section 6049(b)(5) to nonresident aliens.
 o  Payments on tax-free covenant bonds under Section 1451.
 o  Payments made by certain foreign organizations.
 o  Mortgage interest paid to you.

Certain payments, other than payments of interest, dividends, and patronage
dividends, that are exempt from information reporting are also exempt from
backup withholding. For details, see the regulations under sections 6041,
6041A, 6042, 6044, 6045, 6049, 6050A and 6050N.

EXEMPT PAYEES DESCRIBED ABOVE MUST FILE FORM W-9 OR A SUBSTITUTE FORM W-9 TO
AVOID POSSIBLE ERRONEOUS BACKUP WITHHOLDING. FILE THIS FORM WITH THE PAYER,
FURNISH YOUR TAXPAYER IDENTIFICATION NUMBER, WRITE "EXEMPT" IN PART II OF THE
FORM, AND RETURN IT TO THE PAYER. IF THE PAYMENTS ARE OF INTEREST, DIVIDENDS,
OR PATRONAGE DIVIDENDS, ALSO SIGN AND DATE THE FORM.

PRIVACY ACT NOTICE. -- Section 6109 requires you to provide your correct
taxpayer identification number to payers, who must report the payments to the
IRS. The IRS uses the number for identification purposes and may also provide
this information to various government agencies for tax enforcement or
litigation purposes. Payers must be given the numbers whether or not recipients
are required to file tax returns. Payers must generally withhold 31% of taxable
interest, dividend, and certain other payments to a payee who does not furnish
a taxpayer identification number to payer. Certain penalties may also apply.

PENALTIES
(1) FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER. -- If you fail to
furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not to willful neglect.
(2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING. -- If you
make a false statement with no reasonable basis that results in no backup
withholding, you are subject to a $500 penalty.
(3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION. -- Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.

FOR ADDITIONAL INFORMATION CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE.


<PAGE>
This announcement is neither an offer to purchase nor a solicitation of an
offer to sell Shares (as defined below). The Offer (as defined below) is made
solely by the Offer to Purchase dated March 5, 1999 and the related Letter of
Transmittal and is being made to all holders of Shares. Purchaser (as defined
below) is not aware of any state where the making of the Offer is prohibited by
administrative or judicial action pursuant to any valid state statute. If
Purchaser becomes aware of any valid state statute prohibiting the making of
the Offer, Purchaser will make a good faith effort to comply with such statute.
If, after such good faith effort, Purchaser cannot comply with such state
statute, the Offer will not be made to nor will tenders be accepted from or on
behalf of the holders of Shares in such state. In any jurisdiction where the
securities, "blue sky" or other laws require the Offer to be made by a licensed
broker or dealer, the Offer shall be deemed to be made on behalf of Purchaser
by Lehman Brothers Inc., the Dealer Manager, or one or more registered brokers
or dealers licensed under the laws of such jurisdiction.

Notice of Offer to Purchase for Cash
All Outstanding Shares of Common Stock
of
AYDIN CORPORATION
at
$13.50 Net Per Share
by
ANGEL ACQUISITION CORPORATION
a wholly owned subsidiary of
L-3 COMMUNICATIONS CORPORATION
a wholly owned subsidiary of
L-3 COMMUNICATIONS HOLDINGS, INC.

Angel Acquisition Corporation, a Delaware corporation ("Purchaser") and a
wholly owned subsidiary of L-3 Communications Corporation, a Delaware
corporation ("Parent") and a wholly owned subsidiary of L-3 Communications
Holdings, Inc., a Delaware corporation, hereby offers to purchase all of the
outstanding shares of Common Stock, par value $1.00 per share (the "Shares"),
of Aydin Corporation, a Delaware corporation (the "Company"), at a purchase
price of $13.50 per Share, net to the seller in cash, without interest thereon,
upon the terms and subject to the conditions set forth in the Offer to Purchase
dated March 5, 1999 (the "Offer to Purchase") and in the related Letter of
Transmittal (which, as amended from time to time, together constitute the
"Offer").

THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
TIME, ON THURSDAY, APRIL 1, 1999, UNLESS THE OFFER IS EXTENDED.

THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (i) THERE BEING VALIDLY
TENDERED AND NOT PROPERLY WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER AT
LEAST A MAJORITY OF THE SHARES OUTSTANDING ON A FULLY DILUTED BASIS AS OF THE
EXPIRATION OF THE OFFER (THE "MINIMUM CONDITION") AND (ii) THE EXPIRATION OR
TERMINATION OF ANY WAITING PERIODS UNDER THE HART-SCOTT-RODINO ANTITRUST
IMPROVEMENTS ACT OF 1976, AS AMENDED.

The purpose of the Offer is to acquire control of, and the entire equity
interest in, the Company. As promptly as practicable following consummation of
the Offer and after satisfaction or waiver of all conditions to the Merger set
forth in the Merger Agreement (as defined below), Purchaser intends to acquire
the remaining equity interest in the Company not acquired in the Offer by
consummating the Merger (as defined below). The Offer is being made pursuant to
an Agreement and Plan of Merger, dated as of March 1, 1999 (the "Merger
Agreement"), among Parent, Purchaser and the Company. The Merger Agreement
provides, among other things, for the making of the Offer by Purchaser, and
further provides that, following the completion of the Offer, upon the terms
and subject to the conditions of the Merger Agreement and in accordance with
the Delaware General Corporation Law ("DGCL"), Purchaser will be merged with
and into the Company (the "Merger"). At the effective time of the Merger (the
"Effective Time"), each Share issued and outstanding immediately prior to the
Effective Time (other than each Share owned by Parent or Purchaser and any
Shares issued and outstanding immediately prior to the Effective Time and held
by stockholders who have not voted in favor of the Merger or consented thereto
in writing and who have demanded appraisal of their Shares in accordance with
Section 262 of the DGCL) will, by virtue of the Merger and without any action
on the part of the holders thereof, be cancelled, retired and ceased to exist
and converted into the right to receive $13.50 in cash or any higher price that
may be paid pursuant to the Offer, without interest, less any required
withholding taxes. The Merger Agreement is more fully described in Section 11
of the Offer to Purchase.

The Board of Directors of the Company has unanimously determined that the
Merger Agreement and the transactions contemplated thereby, including each of
the Offer and the Merger, are advisable and fair to, and in the best interests
of the holders of the Shares and resolved to recommend that the holders of the
Shares accept the Offer and tender their Shares to Purchaser.

For purposes of the Offer, Purchaser will be deemed to have accepted for
payment (and thereby purchased) Shares validly tendered and not properly
withdrawn as, if and when Purchaser gives oral or written notice to the
ChaseMellon Shareholder Services, L.L.C. (the "Depositary") of Purchasers
acceptance for payment of such Shares pursuant to the Offer. Upon the terms and
subject to the conditions of the Offer, payment for Shares accepted for payment
pursuant to the Offer will be made by deposit of the purchase price therefor
with the Depositary, which will act as agent for tendering stockholders for the
purpose of receiving payments from Purchaser and transmitting such payments to
stockholders whose Shares have been accepted for payment. Under no
circumstances will interest on the purchase price for Shares be paid by the
Purchaser, regardless of any extension of the Offer or any delay in making such
payment. In all cases, payment for Shares tendered and accepted for payment
pursuant to the Offer will be made only after timely receipt by the Depositary
of (i) certificates representing Shares (the "Share Certificates") or timely
confirmation of a book-entry transfer of such Shares into the Depositary's
account at the Depository Trust Company (the "Book-Entry Transfer Facility")
pursuant to the procedures set forth in Section 3 of the Offer to Purchase,
(ii) the Letter of Transmittal (or a facsimile thereof), properly completed and
duly executed, with any required signature guarantees, or an Agents Message (as
defined in Section 2 of the Offer to Purchase) in connection with a book-entry
transfer and (iii) any other documents required by the Letter of Transmittal.

Subject to the provisions of the Merger Agreement and the applicable rules and
regulations of the Securities and Exchange Commission (the "Commission"),
Purchaser reserves the right, in its sole discretion, to waive any or all
conditions to the Offer (other than the Minimum Condition) and to make any
other changes in the terms and conditions to the Offer. Subject to the
provisions of the Merger Agreement and the applicable rules and regulations of
the Commission, if by the Expiration Date any or all of such Offer Conditions
have not been satisfied, Purchaser reserves the right (but shall not be
obligated) to (i) terminate the Offer and return all tendered Shares to
tendering stockholders, (ii) waive such unsatisfied conditions (other than the
Minimum Condition) and purchase all Shares validly tendered or (iii) extend the
Offer and, subject to the terms of the Offer (including the rights of
stockholders to withdraw their Shares), retain the Shares which have been
tendered, until the Offer, as extended, shall expire.

Subject to the provisions of the Merger Agreement and the applicable rules and
regulations of the Commission, Purchaser expressly reserves the right, in its
sole discretion, at any time and from time to time, and regardless of whether
or not any of the Offer Conditions set forth in Section 15 of the Offer to
Purchase shall have occurred or shall have been determined by Purchaser to have
occurred, to (i) extend the period of time during which the Offer is open and
thereby delay acceptance of payment of, and the payment for, any Shares, by
giving oral or written notice of such extension to the Depositary and (ii)
amend the Offer in any respect by giving oral or written notice of such
amendment to the Depositary.

Any extension, delay, termination, waiver or amendment will be followed as
promptly as practicable by public announcement thereof to be made no later than
9:00 A.M., New York City time, on the next business day after the previously
scheduled Expiration Date. During any such extension, all Shares previously
tendered and not properly withdrawn will remain subject to the Offer, subject
to the rights of a tendering stockholder to withdraw such stockholder's Shares.
The term "Expiration Date" means 12:00 Midnight, New York City time, on
Thursday, April 1, 1999, unless and until the Purchaser, in its sole discretion
(but subject to the terms and conditions of the Merger Agreement), shall have
extended the period during which the Offer is open, in which event the term
"Expiration Date" shall mean the latest time and date at which the Offer, as so
extended by the Purchaser, shall expire.

Tenders of Shares made pursuant to the Offer may be withdrawn at any time prior
to the Expiration Date. Thereafter, such tenders are irrevocable except that
they may be withdrawn after May 3, 1999 unless theretofore accepted for payment
as provided in the Offer to Purchase. For a withdrawal to be effective, a
written, telegraphic, telex or facsimile transmission notice of withdrawal must
be timely received by the Depositary at its addresses set forth on the back
cover of the Offer to Purchase. Any notice of withdrawal must specify the name
of the person who tendered the Shares to be withdrawn, the number of Shares to
be withdrawn and the name of the registered holder, if different from that of
the person who tendered such Shares. If the Shares to be withdrawn have been
delivered or otherwise identified to the Depositary, then prior to the physical
release of the certificates, the name of the registered holder (if different
from the tendering stockholder) and the serial numbers shown on such
certificates must be submitted to the Depositary, together with a signed notice
of withdrawal, the signatures on which must be guaranteed by an Eligible
Institution unless such Shares have been tendered for the account of any
Eligible Institution. If Shares have been tendered pursuant to the procedure
for book-entry transfer as set forth in Section 3 of the Offer to Purchase, any
notice of withdrawal must specify the name and number of the account at the
Book-Entry Transfer Facility to be credited with the withdrawn Shares. All
questions as to the form and validity (including time of receipt) of any notice
of withdrawal will be determined by the Purchaser, in its sole discretion,
whose determination will be final and binding. None of Purchaser, Parent, any
of their affiliates or assigns, the Dealer Manager, the Depositary, the
Information Agent or any other person will be under any duty to give
notification of any defects or irregularities in any notice of withdrawal or
incur any liability for failure to give such notification. Withdrawals of
Shares may not be rescinded. Any Shares properly withdrawn will thereafter be
deemed not to have been validly tendered for purposes of the Offer. However,
withdrawn Shares may be re-tendered at any time prior to the Expiration Date by
following one of the procedures described in Section 3 of the Offer to
Purchase.

The information required to be disclosed by Rule 14d-6(e)(1)(vii) of the
General Rules and Regulations under the Securities Exchange Act of 1934, as
amended, is contained in the Offer to Purchase and is incorporated herein by
reference.

The Company has provided Purchaser with the Company's stockholder list and
security position listings for the purpose of disseminating the Offer to
holders of Shares. The Offer to Purchase and the related Letter of Transmittal
and other relevant materials will be mailed by Purchaser to record holders of
Shares and furnished to brokers, dealers, commercial banks, trust companies and
similar persons whose names, or the names of whose nominees, appear on the
stockholder list or, if applicable, who are listed as participants in a
clearing agency's security position listing, for subsequent transmittal to
beneficial owners of Shares.

THE OFFER TO PURCHASE AND THE RELATED LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION WHICH SHOULD BE READ CAREFULLY BEFORE ANY DECISION IS MADE WITH
RESPECT TO THE OFFER.

Questions and requests for assistance may be directed to the Dealer Manager or
the Information Agent as set forth below. Requests for copies of the Offer to
Purchase and the related Letter of Transmittal and all other tender offer
materials may be directed to the Information Agent and copies will be furnished
promptly at Purchaser's expense. Purchaser will not pay any fees or commissions
to any broker or dealer or any other person (other than the Dealer Manager and
the Information Agent) for soliciting tenders of Shares pursuant to the Offer.

The Information Agent for the Offer is:

D.F. King & Co., Inc.
77 Water Street
New York, New York 10005-4495
Banks and Brokers Call Collect: (212) 269-5550
All Others Call Toll-Free: (800) 755-7250

The Dealer Manager for the Offer is:

Lehman Brothers
Three World Financial Center
200 Vesey Street
New York, New York 10285
Call Collect: (212) 526-8376 or (212) 526-1162

March 5, 1999


<PAGE>

                               AYDIN CORPORATION
                                700 Dresher Road
                                  P.O. Box 349
                          Horsham, Pennsylvania 19044




PERSONAL AND CONFIDENTIAL

                   October 8, 1998









L-3 Communications Corporation
600 Third Avenue
New York, NY 10016

Gentlemen:

1. In connection with your consideration of a possible transaction with Aydin
Corporation (the "Company"), you have requested information concerning the
Company. As a condition to you being furnished such information, you agree to
treat any information (whether written or oral) concerning the Company (whether
prepared by the Company, its advisors or otherwise) which is furnished to you
by or on behalf of the Company or its subsidiaries or by its or their
directors, officers, employees, representatives (including financial advisors,
attorneys or accountants) or agents (collectively, "Representatives") to you
and your Representatives (herein collectively referred to as the "Evaluation
Material") in accordance with the provisions of this letter and to take or
abstain from taking certain other actions herein set forth. As used herein, the
term "your Representatives" means those of your and your subsidiaries'
directors, officers, employees, representatives (including financial advisors,
attorneys and accountants) or agents who are provided or informed of the
contents of Evaluation Material on your behalf or otherwise act on your behalf
in connection with a possible transaction between you and the Company, and, in
the case of your or your subsidiaries' representatives (including financial
advisors, attorneys and accountants) or agents, means solely the individual
directors, partners, officers or employees actually provided or informed of the
contents of Evaluation Material or acting in connection with the possible
transaction. The term "Evaluation Material" does not include information which
(i) is already in your possession (other than information provided to you or
your Representatives by the


                                      -1-
<PAGE>

Company or its Representatives) provided that such information is not known by
you to be subject to another confidentiality agreement with or other obligation
of secrecy to the Company or another party, or (ii) becomes generally available
to the public other than as a result of a disclosure by you or your
Representatives (but only with respect to the period after which such
information becomes publicly available), or (iii) becomes available to you on a
non-confidential basis from a source other than the Company or its
Representatives, provided that such source is not known by you, after due
inquiry, to be bound by a confidentiality agreement with or other obligation of
secrecy to the Company or its Representatives.

2. You hereby agree that the Evaluation Material will be used solely for the
purpose of evaluating a possible transaction between the Company and you.
Except as required by law, you agree that such information will be kept
confidential by you and your Representatives, and that you and your
Representatives will not disclose in any manner whatsoever such information or
the fact that you have received such information; provided, however, that (i)
any of such information may be disclosed to your directors, officers and
employees and Representatives who need to know such information for the purpose
of evaluating any such possible transaction between the Company and you (it
being understood that such directors, officers, employees and Representatives
shall be informed by you of the confidential nature of such information and
shall agree to treat such information confidentially), and (ii) any disclosure
of such information may be made to which the Company consents in writing. You
agree that you will be responsible for any breach of this letter by any of your
Representatives, except that you will not be responsible for any such breach
arising from (1) a director, officer or employee of Lehman Brothers Holdings
Inc. or any of its subsidiaries or affiliates conveying information to or
instigating action by Lehman Brothers Holdings Inc. or any of its subsidiaries
or affiliates, (2) a director, officer or employee of Lockheed Martin
Corporation conveying information to or instigating action by Lockheed Martin
Corporation or any of its subsidiaries or affiliates, or (3) any director,
partner, officer or employee of any of your Representatives (including
financial advisors, attorneys or accountants) or agents conveying information
to or instigating action by their employer or their employer's subsidiaries or
affiliates.

3. You hereby acknowledge that you are aware, and that you will advise such
directors, officers, employees and representatives who are informed as to the
matters which are the subject of this letter, that the United States securities
laws prohibit any person who has received from an issuer material, non-public
information concerning the matters which are the subject of this letter from
purchasing or selling securities of such issuer or from communicating such
information to any other person under


                                      -2-
<PAGE>

circumstances in which it is reasonably foreseeable that such person is likely
to purchase or sell such securities.

4. You hereby agree that at no time shall you or your Representatives contact
any officers or employees of the Company in connection with the possible
transaction with the Company other than the officers and employees of the
Company designated by the Company for that purpose.

5. In addition, without the prior written consent of the Company, except as
required by law, you will not, and will direct your Representatives not to,
disclose to any person either the fact that discussions or negotiations are
taking place concerning a possible transaction between the Company and you or
any of the terms, conditions or other facts with respect to any such possible
transaction, including the status thereof.

6. In the event that you or any of your Representatives are requested or
required (by oral questions, interrogatories, requests for information or
documents, subpoena, civil investigative demand or any informal or formal
investigation by any government or governmental agency or authority) to
disclose any of the Evaluation Material or any of the other information
referred to in this letter, you will notify the Company promptly in writing so
that the Company may seek a protective order or other appropriate remedy or, in
the Company's sole discretion, waive compliance with the terms of this letter.
You agree not to oppose any action by the Company to obtain such protective
order or other remedy. Irrespective of whether such protective order or other
remedy is obtained or the Company waives compliance with the terms of this
letter, you agree that you and your Representatives will furnish only that
portion of the Evaluation Material or other information which you are advised
by counsel is legally required to be furnished.

7. You hereby acknowledge that the Evaluation Material is being furnished to
you in consideration of the agreement that prior to the earlier of (i) the
second anniversary of the date of this letter and (ii) the execution by you and
the Company of a definitive and binding agreement relating to a possible
transaction (the "Period"), neither you nor any of your Representatives,
without the prior written consent of the Company, will, in any manner, whether
publicly or otherwise, directly or indirectly (nor will you or any of your
Representatives in any way assist, finance, influence or encourage any other
person or entity, whether publicly or otherwise, directly or indirectly to),
initiate, make, effect, cause or seek, offer or propose to initiate or
participate in or take a position with respect to: (i) any acquisition of any
securities or assets of the Company or any of its affiliates or beneficial
ownership (as defined in Rule 13d-3 of the Securities Exchange Act of 1934, as
amended (the "1934 Act")) thereof; (ii) any tender or exchange offer, merger or



                                      -3-
<PAGE>

other business combination involving the Company or any of its affiliates;
(iii) any sale of assets, recapitalization, restructuring, liquidation,
dissolution or other extraordinary transaction with respect to the Company or
any of its affiliates; (iv) any "solicitation" of "proxies" (as such terms are
used in the rules of the Securities and Exchange Commission) or consents which
relates in any way to any shares of Common Stock or other securities of the
Company, whether before or after the formal commencement of any such
solicitation; (v) advising or influencing any person or entity with respect to
the voting of, or the giving or withholding of any consents with respect to,
any shares of Common Stock or other securities of the Company; (vi) calling, or
seeking to call, a meeting of the Company's shareholders or executing any
written consent or initiating or continuing any shareholder proposal for action
by shareholders of the Company; (vii) otherwise acting, alone or in concert
with others, to seek to acquire control of the Company or influence the Board,
management or policies of the Company; (viii) bringing any action or otherwise
acting to contest the validity of this letter or seeking a release of the
restrictions contained herein; (ix) any formation of a "group" within the
meaning of Section 13(d)(3) or Section 14(d)(2) of, or Rule 13d-5 under, the
1934 Act, with respect to securities of the Company or its affiliates; (x) any
action which would at any time require the Company or any of its affiliates to
make a public announcement regarding any of the foregoing; (xi) any disclosure
of any intention, plan or arrangement inconsistent with any of the foregoing or
(xii) any discussions, arrangements, understandings, agreements or proposals
with any person or entity with respect to any of the foregoing. You also agree
that, during the Period, neither you nor any of your Representatives will
request the Company or any of its Representatives, directly or indirectly, to
amend or waive any provision of this paragraph (including this sentence). If at
the time of this letter you are engaged in any of the foregoing, you agree to
promptly cease or withdraw from any such action.

8. You also agree that the Company shall be entitled to specific performance or
other equitable relief, including injunction, in the event of any breach or
threatened breach of the provisions of this letter and that you shall not
oppose the granting of such relief. Such remedy shall not be deemed to be the
exclusive remedy for a breach of this letter but shall be in addition to all
other remedies at law or in equity.

9. You understand that (a) the Company shall be free to conduct the process
relating to the consideration of a possible transaction (including, without
limitation, by negotiation with any prospective buyer and entering into a
definitive agreement relating to a possible transaction without prior notice to
you or any other person) and (b) any procedures established with respect to
such possible transaction may be changed at any time without notice to you or
any other person and you agree to be bound by

                                      -4-
<PAGE>

such procedures.

10. Although the Company has endeavored to include in the Evaluation Material
information known to it which it believes to be relevant for the purpose of
your investigation, you understand that neither the Company nor any of its
Representatives has made or makes any representation or warranty as to the
accuracy or completeness of the Evaluation Material. You agree that neither the
Company nor its Representatives shall have any liability to you or any of your
Representatives resulting from the use of the Evaluation Material.

11. Immediately upon the Company's request, you shall promptly redeliver to the
Company all written Evaluation Material and any other written material
containing or reflecting any information in the Evaluation Material, including
any summaries, analyses or extracts thereof (whether prepared by the Company,
its advisors or otherwise), and will not retain any copies, extracts or other
reproductions in whole or in part of such written material. All documents,
memoranda, notes and other writings whatsoever prepared by you or your
Representatives based on the information in the Evaluation Material shall be
destroyed, and such destruction shall be certified in writing to the Company by
your authorized officer supervising such destruction. All information contained
in any documents returned to the Company or destroyed, and any oral information
provided to you or your Representatives hereunder, will continue to be subject
to this letter.

12. You agree that unless and until a definitive agreement between the Company
and you with respect to any transaction referred to in the first paragraph of
this letter has been executed and delivered, neither the Company nor you will
be under any legal obligation of any kind whatsoever with respect to such a
transaction by virtue of this or any written or oral expression with respect to
such a transaction by the Company or any of its Representatives except, in the
case of this letter, for the matters specifically agreed to herein.

13. Unless the term of an obligation is otherwise specifically stated herein,
all of the obligations hereunder shall terminate two years following the date
first set forth above.

14. This letter shall be governed by, and construed in accordance with, the
laws of the Commonwealth of Pennsylvania, City of Philadelphia, without regard
to the principles of conflicts of laws thereof. It is further agreed that any
suit, action or proceeding arising under or relating to this letter shall be
brought either in the United States District Court located in, or a state court
located in, the State of Delaware and you hereby (a) consent to the
jurisdiction of any such court, (b) agree to service of process in any such
suit and agree that service of any process, summons, notice or document by U.S.
registered or


                                      -5-
<PAGE>

certified mail to the address set forth above shall be effective service of
process for any suit, action or proceeding brought against you in such court,
and (c) agree that any such court will be the proper and convenient forum for
any such suit, action or proceeding.

15. No modifications of this letter or waiver of the terms and conditions
hereof will be binding upon you or the Company, unless executed in writing by
each of you and the Company.

This letter shall inure to the benefit of and be binding upon our respective
successors and assigns; provided, however, that neither this letter nor any of
the rights, interests or obligations hereunder shall be assigned by either you
or the Company without the prior written consent of the other party.


Very truly yours,


Aydin Corporation


By: /s/ I. Gary Bard
   ---------------------------------
   Name: I. Gary Bard
   Title: Chief Executive Officer



Confirmed and Agreed to:

L-3 Communications Corporation


By: /s/ Christopher C. Cambria
   ---------------------------------
   Name:Christopher C. Cambria
   Title:Vice President, Secretary and
          General Counsel

Date: 10/9/98
     -------------------------------


                                      -6-




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