EXHIBIT 99.1 

                            LETTER OF TRANSMITTAL 
                                     FOR 
                         8% SENIOR SUBORDINATED NOTES 
                                   DUE 2008 
                                      OF 
                        L-3 COMMUNICATIONS CORPORATION 

  THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON        , 
  1999 (THE "EXPIRATION DATE") UNLESS EXTENDED BY L-3 COMMUNICATIONS 
  CORPORATION. 

                               EXCHANGE AGENT: 
                             THE BANK OF NEW YORK 

               By Hand:                                By Mail: 
         The Bank of New York            (Insured or Registered Recommended) 
           101 Barclay Street                    The Bank of New York 
    Corporate Trust Services Window             101 Barclay Street, 7E 
        New York, New York 10286               New York, New York 10286 
   Attention: Reorganization Section      Attention: Reorganization Section 

         By Overnight Express:                      By Facsimile: 
         The Bank of New York                       (212) 815-6339 
           101 Barclay Street              (For Eligible Institutions Only) 
    Corporate Trust Services Window 
        New York, New York 10286                    By Telephone: 
   Attention: Reorganization Section               (212) 815-4444 

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

   The undersigned acknowledges receipt of the prospectus dated        , 1999 
(the "Prospectus") of L-3 Communications Corporation (the "Company"), and 
this Letter of Transmittal (the "Letter of Transmittal"), which together 
describe the Company's offer (the "Exchange Offer") to exchange $1,000 in 
principal amount of its new 8% Series B Senior Subordinated Notes due 2008 
(the "Exchange Notes") for each $1,000 in principal amount of outstanding 8% 
Senior Subordinated Notes due 2008 (the "Old Notes"). The terms of the 
Exchange Notes are identical in all material respects (including principal 
amount, interest rate and maturity) to the terms of the Old Notes for which 
they may be exchanged pursuant to the Exchange Offer, except that the 
Exchange Notes are freely transferable by holders thereof (except as provided 
herein or in the Prospectus) and are not subject to any covenant regarding 
registration under the Securities Act of 1933, as amended (the "Securities 
Act"). 

   The undersigned has checked the appropriate boxes below and signed this 
Letter of Transmittal to indicate the action the undersigned desires to take 
with respect to the Exchange Offer. 


       PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL AND THE PROSPECTUS 
                   CAREFULLY BEFORE CHECKING ANY BOX BELOW 

YOUR BANK OR BROKER CAN ASSIST YOU IN COMPLETING THIS FORM. THE INSTRUCTIONS 
INCLUDED WITH THIS LETTER OF TRANSMITTAL MUST BE FOLLOWED. QUESTIONS AND 
REQUESTS FOR ASSISTANCE OR FOR ADDITIONAL COPIES OF THE PROSPECTUS AND THIS 
LETTER OF TRANSMITTAL MAY BE DIRECTED TO THE EXCHANGE AGENT. 

   List below the Old Notes to which this Letter of Transmittal relates. If 
the space provided below is inadequate, the Certificate Numbers and Principal 
Amounts should be listed on a separate signed schedule affixed hereto. 



                             DESCRIPTION OF OLD NOTES TENDERED HEREWITH 
- --------------------------------------------------------------------------------------------------- 
      NAME(S) AND ADDRESS(ES) OF 
              REGISTERED                                 AGGREGATE PRINCIPAL 
              HOLDER(S)                 CERTIFICATE      AMOUNT REPRESENTED      PRINCIPAL AMOUNT 
           (PLEASE FILL IN)              NUMBER(S)*         BY OLD NOTES*           TENDERED** 
- ------------------------------------  --------------- -----------------------  -------------------- 
                                                                      
- ------------------------------------  --------------- -----------------------  -------------------- 

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

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

- ------------------------------------  -------------------------------------------------------------- 
*  Need not be completed by book-entry holders. 
- --------------------------------------------------------------------------------------------------- 
** Unless otherwise indicated, the holder will be deemed to have tendered the full aggregate 
   principal amount represented by such Old Notes. See Instruction 2. 
- --------------------------------------------------------------------------------------------------- 


   This Letter of Transmittal is to be used either if certificates 
representing Old Notes are to be forwarded herewith or if delivery of Old 
Notes is to be made by book-entry transfer to an account maintained by the 
Exchange Agent at The Depository Trust Company, pursuant to the procedures 
set forth in "The Exchange Offer--Procedures for Tendering Old Notes" in the 
Prospectus. Delivery of documents to the book-entry transfer facility does 
not constitute delivery to the Exchange Agent. 

   Holders whose Old Notes are not immediately available or who cannot 
deliver their Old Notes and all other documents required hereby to the 
Exchange Agent on or prior to the Expiration Date must tender their Old Notes 
according to the guaranteed delivery procedure set forth in the Prospectus 
under the caption "The Exchange Offer--Procedures for Tendering Old Notes". 

 [ ]   CHECK HERE IF TENDERED OLD NOTES ARE BEING DELIVERED BY BOOK-ENTRY 
       TRANSFER MADE TO AN ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH THE 
       BOOK-ENTRY TRANSFER FACILITY AND COMPLETE THE FOLLOWING:
 
       Name of Tendering Institution 
       ----------------------------------------------------------------------- 

 [ ]   The Depository Trust Company 

       Account Number 
       ----------------------------------------------------------------------- 

       Transaction Code Number 
       ----------------------------------------------------------------------- 

 [ ]   CHECK HERE IF TENDERED OLD NOTES ARE BEING DELIVERED PURSUANT TO A 
       NOTICE OF GUARANTEED DELIVERY AND COMPLETE THE FOLLOWING: 

       Name of Registered Holder(s) 
       ----------------------------------------------------------------------- 

       Name of Eligible Institution that Guaranteed Delivery 
       ----------------------------------------------------------------------- 

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

                                2           

If Delivered by Book-entry Transfer: 
Account Number 
- ----------------------------------------------------------------------------- 

 [ ]   CHECK HERE IF EXCHANGE NOTES ARE TO BE DELIVERED TO PERSON OTHER THAN 
       PERSON SIGNING THE LETTER OF TRANSMITTAL: 
       Name 
       ----------------------------------------------------------------------- 
                                   (Please Print) 
       Address 
       ----------------------------------------------------------------------- 
                                (Including Zip Code) 

 [ ]   CHECK HERE IF EXCHANGE NOTES ARE TO BE DELIVERED TO ADDRESS DIFFERENT 
       FROM THAT LISTED ELSEWHERE IN THIS LETTER OF TRANSMITTAL: 

       Address 
       ----------------------------------------------------------------------- 
                                (Including Zip Code) 

 [ ]   CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL 
       COPIES OF THIS PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR 
       SUPPLEMENTS THERETO. 

       Name: 
       ----------------------------------------------------------------------- 

       Address: 
       ----------------------------------------------------------------------- 

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

   If the undersigned is not a broker-dealer, the undersigned represents that 
it is not engaged in, and does not intend to engage in, a distribution of 
Exchange Notes. If the undersigned is a broker-dealer that will receive 
Exchange Notes for its own account in exchange for Old Notes that were 
acquired as result of market-making activities or other trading activities, 
it acknowledges that it will deliver a prospectus in connection with any 
resale of such Exchange Notes; however, by so acknowledging and by delivering 
a prospectus, the undersigned will not be deemed to admit that it is an 
"underwriter" within the meaning of the Securities Act. Any holder who is an 
"affiliate" of the Company or who has an arrangement or understanding with 
respect to the distribution of the Exchange Notes to be acquired pursuant to 
the Exchange Offer, or any broker-dealer who purchased Old Notes from the 
Company to resell pursuant to Rule 144A under the Securities Act or any other 
available exemption under the Securities Act must comply with the 
registration and prospectus delivery requirements under the Securities Act. 

                                3           

             PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY 

LADIES AND GENTLEMEN: 

   Upon the terms and subject to the conditions of the Exchange Offer, the 
undersigned hereby tenders to the Company the above-described principal 
amount of the Old Notes indicated above. Subject to, and effective upon, the 
acceptance for exchange of the Old Notes tendered herewith, the undersigned 
hereby exchanges, assigns and transfers to, or upon the order of, the Company 
all right, title and interest in and to such Old Notes. The undersigned 
hereby irrevocably constitutes and appoints the Exchange Agent the true and 
lawful agent and attorney-in-fact of the undersigned (with full knowledge 
that said Exchange Agent acts as the agent of the Company, in connection with 
the Exchange Offer) to cause the Old Notes to be assigned, transferred and 
exchanged. The undersigned represents and warrants that it has full power and 
authority to tender, exchange, assign and transfer the Old Notes and to 
acquire Exchange Notes issuable upon the exchange of such tendered Old Notes, 
and that, when the same are accepted for exchange, the Company will acquire 
good and unencumbered title to the tendered Old Notes, free and clear of all 
liens, restrictions, charges and encumbrances and not subject to any adverse 
claim. The undersigned also warrants that it will, upon request, execute and 
deliver any additional documents deemed by the Exchange Agent or the Company 
to be necessary or desirable to complete the exchange, assignment and 
transfer of tendered Old Notes or transfer ownership of such Old Notes on the 
account books maintained by the book-entry transfer facility. The undersigned 
further agrees that acceptance of any and all validly tendered Old Notes by 
the Company and the issuance of Exchange Notes in exchange therefor shall 
constitute performance in full by the Company of its obligations under the 
Registration Rights Agreement (as defined in the Prospectus) and that the 
Company shall have no further obligations or liabilities thereunder except as 
provided in the first paragraph of Section 2 of said agreement. 

   The Exchange Offer is subject to certain conditions as set forth in the 
Prospectus under the caption "The Exchange Offer -- Certain Conditions to the 
Exchange Offer." The undersigned recognizes that as a result of these 
conditions (which may be waived, in whole or in part, by the Company), as 
more particularly set forth in the Prospectus, the Company may not be 
required to exchange any of the Old Notes tendered hereby and, in such event, 
the Old Notes not exchanged will be returned to the undersigned at the 
address shown above. In addition, the Company may amend the Exchange Offer at 
any time prior to the Expiration Date if any of the conditions set forth 
under "The Exchange Offer -- Certain Conditions to the Exchange Offer" occur. 

   By tendering, each holder of Old Notes represents that the Exchange Notes 
acquired in the exchange will be obtained in the ordinary course of such 
holder's business, that such holder has no arrangement with any person to 
participate in the distribution of such Exchange Notes, that such holder is 
not an "affiliate" of the Company within the meaning of Rule 405 under the 
Securities Act and that such holder is not engaged in, and does not intend to 
engage in, a distribution of the Exchange Notes. Any holder of Old Notes 
using the Exchange Offer to participate in a distribution of the Exchange 
Notes (i) cannot rely on the position of the staff of the Securities and 
Exchange Commission (the "Commission") enunciated in its interpretive letter 
with respect to Exxon Capital Holdings Corporation (available April 13, 1989) 
or similar letters and (ii) must comply with the registration and prospectus 
requirements of the Securities Act in connection with a secondary resale 
transaction. 

   If the undersigned is not a broker-dealer, the undersigned represents that 
it is not engaged in, and does not intend to engage in, a distribution of 
Exchange Notes. If the undersigned is a broker-dealer that will receive 
Exchange Notes for its own account in exchange for Old Notes that were 
acquired as a result of market-making activities or other trading activities, 
it acknowledges that it will deliver a prospectus in connection with any 
resale of such Exchange Notes, however, by so acknowledging and by delivering 
a prospectus, the undersigned will not be deemed to admit that it is an 
"underwriter" within the meaning of the Securities Act. 

   All authority herein conferred or agreed to be conferred shall survive the 
death or incapacity of the undersigned and every obligation of the 
undersigned hereunder shall be binding upon the heirs, personal 
representatives, successors and assigns of the undersigned. Tendered Old 
Notes may be withdrawn at any time prior to the Expiration Date in accordance 
with the terms of this Letter of Transmittal. See Instruction 2. 

   Certificates for all Exchange Notes delivered in exchange for tendered Old 
Notes and any Old Notes delivered herewith but not exchanged, and registered 
in the name of the undersigned, shall be delivered to the undersigned at the 
address shown below the signature of the undersigned. 

                                4           

                          TENDER HOLDER(S) SIGN HERE 
                 (Complete accompanying Substitute Form W-9) 

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

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

 Dated                       Area Code and Telephone Number 
 ---------------------------------------------------------------------------- 

 (Must be signed by registered holder(s) exactly as name(s) appear(s) on 
 certificate(s) for Old Notes. If signature is by a trustee, executor, 
 administrator, guardian, attorney-in-fact, officer of a corporation or other 
 person acting in a fiduciary or representative capacity, please set forth 
 the full title of such person.) See Instruction 3. 

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

 Capacity (full title) 
 ---------------------------------------------------------------------------- 

 Address 
 ---------------------------------------------------------------------------- 
                             (INCLUDING ZIP CODE) 

 Area Code and Telephone No. 
 ---------------------------------------------------------------------------- 

 Taxpayer Identification No. 
 ---------------------------------------------------------------------------- 

                          GUARANTEE OF SIGNATURE(S) 
                      (IF REQUIRED -- SEE INSTRUCTION 3) 

 Authorized Signature 
 ---------------------------------------------------------------------------- 

 Name 
 ---------------------------------------------------------------------------- 

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

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

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

 Area Code and Telephone Number 
 ---------------------------------------------------------------------------- 

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

                                5           

                                 INSTRUCTIONS 
        FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER 

1. DELIVERY OF THIS LETTER OF TRANSMITTAL AND CERTIFICATES. 

   A holder of Old Notes may tender the same by (i) properly completing and 
signing this Letter of Transmittal or a facsimile hereof (all references in 
the Prospectus to the Letter of Transmittal shall be deemed to include a 
facsimile thereof) and delivering the same, together with the certificate or 
certificates representing the Old Notes being tendered and any required 
signature guarantees and any other document required by this Letter of 
Transmittal, to the Exchange Agent at its address set forth above on or prior 
to the Expiration Date (or complying with the procedure for book-entry 
transfer described below) or (ii) complying with the guaranteed delivery 
procedures described below. 

   THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, THE OLD NOTES AND 
ANY OTHER REQUIRED DOCUMENTS IS AT THE ELECTION AND RISK OF THE HOLDER, AND 
EXCEPT AS OTHERWISE PROVIDED BELOW, THE DELIVERY WILL BE DEEMED MADE ONLY 
WHEN ACTUALLY RECEIVED OR CONFIRMED BY THE EXCHANGE AGENT. IF SUCH DELIVERY 
IS BY MAIL, IT IS SUGGESTED THAT REGISTERED MAIL WITH RETURN RECEIPT 
REQUESTED, PROPERTY INSURED, BE USED. IN ALL CASES SUFFICIENT TIME SHOULD BE 
ALLOWED TO PERMIT TIMELY DELIVERY. NO OLD NOTES OR LETTERS OF TRANSMITTAL 
SHOULD BE SENT TO THE COMPANY. 

   If tendered Old Notes are registered in the name of the signer of the 
Letter of Transmittal and the Exchange Notes to be issued in exchange 
therefor are to be issued (and any untendered Old Notes are to be reissued) 
in the name of the registered holder (which term, for the purposes described 
herein, shall include any participant in The Depository Trust Company (also 
referred to as a "book-entry transfer facility") whose name appears on a 
security listing as the owner of Old Notes), the signature of such signer 
need not be guaranteed. In any other case, the tendered Old Notes must be 
endorsed or accompanied by written instruments of transfer in form 
satisfactory to the Company and duly executed by the registered holder, and 
the signature on the endorsement or instrument of transfer must be guaranteed 
by a bank, broker, dealer, credit union, savings association, clearing agency 
or other institution (each an "Eligible Institution") that is a member of a 
recognized signature guarantee medallion program within the meaning of Rule 
17Ad-15 under the Securities Exchange Act of 1934, as amended. If the 
Exchange Notes and/or Old Notes not exchanged are to be delivered to an 
address other than that of the registered holder appearing on the note 
register for the Old Notes, the signature on the Letter of Transmittal must 
be guaranteed by an Eligible Institution. 

   The Exchange Agent will make a request within two business days after the 
date of receipt of this Prospectus to establish accounts with respect to the 
Old Notes at the book-entry transfer facility for the purpose of facilitating 
the Exchange Offer, and subject to the establishment thereof, any financial 
institution that is a participant in the book-entry transfer facility's 
system may make book-entry delivery of Old Notes by causing such book-entry 
transfer facility to transfer such Old Notes into the Exchange Agent's 
account with respect to the Old Notes in accordance with the book-entry 
transfer facility's procedures for such transfer. Although delivery of Old 
Notes may be effected through book-entry transfer into the Exchange Agent's 
account at the book-entry transfer facility, an appropriate Letter of 
Transmittal with any required signature guarantee and all other required 
documents must in each case be transmitted to and received or confirmed by 
the Exchange Agent on or prior to the Expiration Date, or, if the guaranteed 
delivery procedures described below are complied with, within the time period 
provided under such procedures. 

   If a holder desires to accept the Exchange Offer and time will not permit 
a Letter of Transmittal or Old Notes to reach the Exchange Agent before the 
Expiration Date or the procedure for book-entry transfer cannot be completed 
on a timely basis, a tender may be effected if the Exchange Agent has 
received on or prior to the Expiration Date, a letter, telegram or facsimile 
transmission (receipt confirmed by telephone and an original delivered by 
guaranteed overnight courier) from an Eligible Institution setting forth the 
name and address of the tendering holder, the names in which the Old Notes 
are registered and, if possible, the certificate numbers of the Old Notes to 
be tendered, and stating that the tender is being made thereby and 
guaranteeing that within three business days after the Expiration Date, the 
Old Notes in proper form for transfer (or a confirmation of book-entry 
transfer of such Old Notes into the Exchange Agent's account at the 
book-entry transfer facility), will be delivered by such Eligible Institution 
together with a properly completed and duly executed Letter of Transmittal 
(and any other required documents). Unless Old Notes being tendered by the 
above-described method are deposited with the Exchange Agent within the time 
period set forth above (accompanied or preceded by a properly completed 
Letter of Transmittal and any other required documents), the Company may, at 
its option, reject the tender. 

                                6           

Copies of the notice of guaranteed delivery ("Notice of Guaranteed Delivery") 
which may be used by Eligible Institutions for the purposes described in this 
paragraph are available from the Exchange Agent. 

   A tender will be deemed to have been received as of the date when (i) the 
tendering holder's properly completed and duly signed Letter of Transmittal 
accompanied by the Old Notes (or a confirmation of book-entry transfer of 
such Old Notes into the Exchange Agent's account at the book-entry transfer 
facility) is received by the Exchange Agent, or (ii) a Notice of Guaranteed 
Delivery or letter, telegram or facsimile transmission to similar effect (as 
provided above) from an Eligible Institution is received by the Exchange 
Agent. Issuances of Exchange Notes in exchange for Old Notes tendered 
pursuant to a Notice of Guaranteed Delivery or letter, telegram or facsimile 
transmission to similar effect (as provided above) by an Eligible Institution 
will be made only against deposit of the Letter of Transmittal (and any other 
required documents) and the tendered Old Notes. 

   If the Letter of Transmittal is signed by a person or persons other than 
the registered holder or holders of Old Notes, such Old Notes must be 
endorsed or accompanied by appropriate powers of attorney, in either case 
signed exactly as the name or names of the registered holder or holders 
appear on the Old Notes. 

   No alternative, conditional, irregular or contingent tenders will be 
accepted. All tendering holders, by execution of this Letter of Transmittal 
(or facsimile thereof), shall waive any right to receive notice of the 
acceptance of the Old Notes for exchange. 

2. PARTIAL TENDERS; WITHDRAWALS. 

   If less than the entire principal amount of Old Notes evidenced by a 
submitted certificate is tendered, the tendering holder should fill in the 
principal amount tendered in the box entitled "Principal Amount Tendered." A 
newly issued certificate for the principal amount of Old Notes submitted but 
not tendered will be sent to such holder as soon as practicable after the 
Expiration Date. All Old Notes delivered to the Exchange Agent will be deemed 
to have been tendered unless otherwise clearly indicated. 

   For a withdrawal to be effective, a written notice of withdrawal sent by 
telegram, facsimile transmission (receipt confirmed by telephone) or letter 
must be received by the Exchange Agent at the address set forth herein prior 
to the Expiration Date. Any such notice of withdrawal must (i) specify the 
name of the person having tendered the Old Notes to be withdrawn (the 
"Depositor"), (ii) identify the Old Notes to be withdrawn (including the 
certificate number or numbers and principal amount of such Old Notes), (iii) 
specify the principal amount of Old Notes to be withdrawn, (iv) include a 
statement that such holder is withdrawing his election to have such Old Notes 
exchanged, (v) be signed by the holder in the same manner as the original 
signature on the Letter of Transmittal by which such Old Notes were tendered 
or as otherwise described above (including any required signature guarantees) 
or be accompanied by documents of transfer sufficient to have the Trustee 
under the Indenture register the transfer of such Old Notes into the name of 
the person withdrawing the tender and (vi) specify the name in which any such 
Old Notes are to be registered, if different from that of the Depositor. The 
Exchange Agent will return the properly withdrawn Old Notes promptly 
following receipt of notice of withdrawal. If Old Notes have been tendered 
pursuant to the procedure for book-entry transfer, 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 Old Notes or otherwise comply with 
the book-entry transfer facility procedure. All questions as to the validity 
of notices of withdrawals, including, time of receipt, will be determined by 
the Company and such determination will be final and binding on all parties. 

   Any Old Notes so withdrawn will be deemed not to have been validly 
tendered for exchange for purposes of the Exchange Offer. Any Old Notes which 
have been tendered for exchange but which are not exchanged for any reason 
will be returned to the holder thereof without cost to such holder (or, in 
the case of Old Notes tendered by book-entry transfer into the Exchange 
Agent's account at the book-entry transfer facility pursuant to the 
book-entry transfer procedures described above, such Old Notes will be 
credited to an account with such book-entry transfer facility specified by 
the holder) as soon as practicable after withdrawal, rejection of tender or 
termination of the Exchange Offer. Properly withdrawn Old Notes may be 
retendered by following one of the procedures described under the caption 
"Procedures for Tendering Old Notes" in the Prospectus at any time on or 
prior to the Expiration Date. 

3. SIGNATURE ON THIS LETTER OF TRANSMITTAL; WRITTEN INSTRUMENTS AND 
ENDORSEMENTS; GUARANTEE OF SIGNATURES. 

   If this Letter of Transmittal is signed by the registered holder(s) of the 
Old Notes tendered hereby, the signature must correspond with the name(s) 
written on the face of the certificates without alteration, enlargement or 
any change whatsoever. 

                                7           

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

   If a number of Old Notes registered in different names are tendered, it 
will be necessary to complete, sign and submit as many separate copies of 
this Letter of Transmittal as there are different registrations of Old Notes. 

   When this Letter of Transmittal is signed by the registered holder or 
holders (which term, for the purposes described herein, shall include the 
book-entry transfer facility whose name appears on a security listing as the 
owner of the Old Notes) of Old Notes listed and tendered hereby, no 
endorsements of certificates or separate written instruments of transfer or 
exchange are required. 

   If this Letter of Transmittal is signed by a person or persons other than 
the registered holder or holders of Old Notes, such Old Notes must be 
endorsed or accompanied by appropriate powers of attorney, in either case 
signed exactly as the name or names of the registered holder or holders 
appear(s) on the Old Notes. 

   If this Letter of Transmittal or any Old Notes or powers of attorney 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, unless waived by 
the Company, proper evidence satisfactory to the Company of their authority 
so to act must be submitted. 

   Endorsements on certificates or signatures on separate written instruments 
of transfer or exchange required by this Instruction 3 must be guaranteed by 
an Eligible Institution. 

   Signatures on this Letter of Transmittal need not be guaranteed by an 
Eligible Institution, provided the Old Notes are tendered: (i) by a 
registered holder of such Old Notes, for the holder of such Old Notes; or 
(ii) for the account of an Eligible Institution. 

4.  TRANSFER TAXES. 

   The Company shall pay all transfer taxes, if any, applicable to the 
transfer and exchange of Old Notes pursuant to the Exchange Offer. If, 
however, certificates representing Exchange Notes or Old Notes for principal 
amounts not tendered or accepted for exchange are to be delivered to, or are 
to be issued in the name of, any person other than the registered holder of 
the Old Notes tendered, or if tendered Old Notes are registered in the name 
of any person other than the person signing the Letter of Transmittal, or if 
a transfer tax is imposed for any reason other than the exchange of Old Notes 
pursuant to the Exchange Offer, then the amount of any such transfer taxes 
(whether imposed on the registered holder or any other persons) will be 
payable by the tendering holder. If satisfactory evidence of payment of such 
taxes or exception therefrom is not submitted herewith the amount of such 
transfer taxes will be billed directly to such tendering holder. 

   Except as provided in this Instruction 4, it will not be necessary for 
transfer tax stamps to be affixed to the Old Notes listed in this Letter of 
Transmittal. 

5. WAIVER OF CONDITIONS. 

   The Company reserves the right to waive in its reasonable judgment, in 
whole or in part, any of the conditions to the Exchange Offer set forth in 
the Prospectus. 

6. MUTILATED, LOST, STOLEN OR DESTROYED OLD NOTES. 

   Any holder whose Old Notes have been mutilated, lost, stolen or destroyed, 
should contact the Exchange Agent at the address indicated above for further 
instructions. 

7. SUBSTITUTE FORM W-9. 

   Each holder of Old Notes whose Old Notes are accepted for exchange (or 
other payee) is required to provide a correct taxpayer identification number 
("TIN"), generally the holder's Social Security or federal employer 
identification number, and with certain other information, on Substitute Form 
W-9, which is provided under "Important Tax Information" below, and to 
certify that the holder (or other payee) is not subject to backup 
withholding. Failure to provide the information on the Substitute Form W-9 
may subject the holder (or other payee) to a $50 penalty imposed by the 
Internal Revenue Service and 31% federal income tax backup withholding on 
payments made in connection with the Exchange Notes. The box in Part 3 

                                8           

of the Substitute Form W-9 may be checked if the holder (or other payee) 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 and a TIN is not provided 
by the time any payment is made in connection with the Exchange Notes, 31% of 
all such payments will be withheld until a TIN is provided. 

8. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. 

   Questions relating to the procedure for tendering, as well as requests for 
additional copies of the Prospectus and this Letter of Transmittal, may be 
directed to the Exchange Agent at the address and telephone number set forth 
above. In addition, all questions relating to the Exchange Offer, as well as 
requests for assistance or additional copies of the Prospectus and this 
Letter of Transmittal, may be directed to L-3 Communications Corporation, 600 
Third Avenue, New York, New York 10016, attention: Corporate Secretary 
(telephone: (212) 697-1111). 

   IMPORTANT: THIS LETTER OF TRANSMITTAL OR A FACSIMILE HEREOF (TOGETHER WITH 
CERTIFICATES FOR OLD NOTES OR CONFIRMATION OF BOOK-ENTRY TRANSFER AND ALL 
OTHER REQUIRED DOCUMENTS) OR A NOTICE OF GUARANTEED DELIVERY MUST BE RECEIVED 
BY THE EXCHANGE AGENT ON OR PRIOR TO THE EXPIRATION DATE. 

                          IMPORTANT TAX INFORMATION 

   Under U.S. federal income tax law, a holder of Old Notes whose Old Notes 
are accepted for exchange may be subject to backup withholding unless the 
holder provides The Bank of New York (as payor) (the "Paying Agent"), through 
the Exchange Agent, with either (i) such holder's correct taxpayer 
identification number ("TIN") on Substitute Form W-9 attached hereto, 
certifying that the TIN provided on Substitute Form W-9 is correct (or that 
such holder of Old Notes is awaiting a TIN) and that (A) the holder of Old 
Notes has not been notified by the Internal Revenue Service that he or she is 
subject to backup withholding as a result of a failure to report all interest 
or dividends or (B) the Internal Revenue Service has notified the holder of 
Old Notes that he or she is no longer subject to backup withholding; or (ii) 
an adequate basis for exemption from backup withholding. If such holder of 
Old Notes is an individual, the TIN is such holder's social security number. 
If the Paying Agent is not provided with the correct taxpayer identification 
number, the holder of Old Notes may be subject to certain penalties imposed 
by the Internal Revenue Service. 

   Certain holders of Old Notes (including, among others, all corporations 
and certain foreign individuals) are not subject to these backup withholding 
and reporting requirements. Exempt holders of Old Notes should indicate their 
exempt status on Substitute Form W-9. In order for a foreign individual to 
qualify as an exempt recipient, the holder 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 Paying Agent. See the enclosed "Guidelines 
for Certification of Taxpayer Identification Number on Substitute Form W-9" 
for more instructions. 

   If backup withholding applies, the Paying Agent is required to withhold 
31% of any such payments made to the holder of Old Notes 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. 

   The box in Part 3 of the Substitute Form W-9 may be checked if the 
surrendering holder of Old Notes 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 holder of Old Notes 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 Paying Agent will withhold 31% of all payments made prior to the time a 
properly certified TIN is provided to the Paying Agent. 

   The holder of Old Notes is required to give the Paying Agent the TIN 
(e.g., social security number or employer identification number) of the 
record owner of the Old Notes. If the Old Notes 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. 

                                9           

             PAYOR'S NAME: THE BANK OF NEW YORK, AS PAYING AGENT 



                                                                   
- ---------------------------------------------------------------------------------------------------------------- 
            SUBSTITUTE                PART I--PLEASE PROVIDE YOUR TIN        TIN: -------------------- 
             FORM W-9               IN THE BOX AT RIGHT AND CERTIFY BY 
    DEPARTMENT OF THE TREASURY           SIGNING AND DATING BELOW.          Social Security number(s) or 
     INTERNAL REVENUE SERVICE                                                 Employer Identification 
   PAYOR'S REQUEST FOR TAXPAYER                                                        Number 
   IDENTIFICATION NUMBER (TIN) 
- ---------------------------------------------------------------------------------------------------------------- 
PART 2-- CERTIFICATION--Under penalties of perjury, I certify that: (1) The number shown on this form is my 
correct taxpayer identification number (or I am waiting for a number to be issued for 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 (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 underreporting interest or dividends on your tax return. 
- ---------------------------------------------------------------------------------------------------------------- 



                                                                         
                                                                               PART 3-- 
SIGNATURE                              DATE               , 1999               Awaiting TIN [] 
- -------------------------------------- --------------------------------------  --------------------------------- 


NOTE:      FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN A $50 
           PENALTY IMPOSED BY THE INTERNAL REVENUE SERVICE AND BACKUP 
           WITHHOLDING OF 31% OF ANY CASH PAYMENTS MADE TO YOU. 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 THE 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 cash payments made to me thereafter 
 will be withheld until I provide a taxpayer identification number. 

 Signature                                             Date            , 1999
- ----------------------------------------------------------------------------- 

                               10