TIME ACCELERATED RESTRICTED STOCK PURCHASE AGREEMENT

         AGREEMENT dated  September 24, 1998 between Comtech  Telecommunications
Corp., a Delaware corporation ("Comtech"), and Ronald Johnson ("Employee").

         WHEREAS,  Employee is employed by  Comtech's  wholly-owned  subsidiary,
Comtech Mobile Datacom Corporation ("CMDC"),  and Comtech and Employee desire to
(a) provide  additional  incentives  to Employee in connection  with  Employee's
responsibilities  for the management and growth of the business of CMDC, and (b)
more closely align  Employee's  interests with the interests of  stockholders of
Comtech,  through,  in relation  to both  objectives,  the sale and  issuance to
Employee of restricted shares of Common Stock of Comtech.

         NOW, THEREFORE, Comtech and Employee agree as follows:

         1. Definitions

         (a)  "Comtech"  means  Comtech  Telecommunications  Corp.,  a  Delaware
corporation.

         (b)  "Escrow  Agent"  means the  Escrow  Agent as defined in the Escrow
Agreement in the form annexed hereto as Exhibit A.

         (c) "Cumulative  CMDC Pre-Tax  Profits" means CMDC's  aggregate  income
before income taxes minus CMDC's  aggregate  losses in the period from inception
of operations of CMDC to the end of the relevant fiscal year.  Determinations of
such amounts  shall be made in accordance  with  generally  accepted  accounting
principles, with the exception that no effect shall be given to

              (i)  interest or like charges or accruals  ("Capital  Charges") in
              respect of Comtech  cash  advances to CMDC that are less than $1.5
              million  plus the  amount  of  dividends  paid by CMDC to  Comtech
              during the relevant fiscal year;

              (ii)  Capital  Charges in excess of 1/2% above the average rate of
              interest then charged to Comtech for all borrowings by Comtech, on
              Comtech cash advances to CMDC  exceeding  $1.5 million at any time
              outstanding  plus the amount of dividends  paid by CMDC to Comtech
              during the relevant fiscal year;

              (iii)  general or  administrative  expenses of Comtech,  including
              charges for management or corporate  services  provided by Comtech
              to CMDC; or

              (iv) the sale of shares of Comtech  Common  Stock to Employee  and
              other employees of CMDC, or the repurchase of same.


                                       1




         (d) "Net Cash Borrowings"  means the cumulative amount of cash advances
to CMDC by Comtech.

         (e) "Net Cash Flow" means total cash refunds by CMDC to Comtech, net of
cash advances by Comtech to CMDC.

         (f)  "Restricted  Shares" means the Shares subject to the  restrictions
against  transfer  provided  in  Section 3 hereof and which are  required  to be
resold to Comtech under certain circumstances as provided in Section 3 hereof.

         (g)  "Unrestricted  Shares"  means Shares as to which all  restrictions
against transfer and the obligation to resell to Comtech have lapsed.

         (h) "Shares" shall have the meaning provided in Section 2 hereof.

         2. Sale and Purchase of Shares

         On the terms,  and  subject  to the  conditions  hereinafter  provided,
simultaneously with the execution and delivery of this Agreement, (i) Comtech is
selling and issuing to Employee, and Employee is purchasing from Comtech, 20,000
shares of Common  Stock,  par value $.10 per share,  of Comtech (the  "Shares");
(ii) Employee is paying to Comtech by certified or bank cashier's  check a total
purchase  price for the  Shares  of $2,000  (i.e.,  $.10 per  share);  and (iii)
Employee  is  depositing  the Shares  with the Escrow  Agent,  to be held by the
Escrow  Agent  pursuant  and subject to the terms of an Escrow  Agreement in the
form annexed hereto as Exhibit A.

         3. Restrictions

         (a) The Shares shall not be  transferred  until such time as they shall
become "Unrestricted Shares" pursuant to Section 4 hereof (the Shares subject to
such restriction being hereinafter referred to as "Restricted  Shares"). As used
in this  Agreement,  "transfer"  shall include,  without  limitation,  any sale,
assignment, gift, pledge, hypothecation,  bequest, devise, encumbrance, or other
disposition, whether voluntary or by operation of law. Any attempted transfer of
Restricted Shares (other than to Comtech pursuant to the provisions of Section 4
of this  Agreement)  shall be null and void and Comtech shall not give effect on
its records to any such attempted transfer.

         (b) Employee authorizes Comtech and its transfer agents not to transfer
any certificates of Comtech Common Stock on its books and records transferred in
violation of this Agreement, and further agrees that any such purported transfer
shall be void and of no effect.

         (c) An original of this Agreement shall be kept in the files of Comtech
at its principal office and reference to this Agreement shall be endorsed on all
stock  certificates  subject to this  Agreement,  now or  hereafter  issued,  by
writing or stamping thereon a legend in substantially the following form:


                                       2



         "Sale,    assignment,    gift,   bequest,   devise,   pledge,
         hypothecation, encumbrance or other disposition of the shares
         represented by this Certificate is restricted by the terms of
         a Restricted  Stock  Agreement,  dated  September __, 1998, a
         copy of which, and any amendments thereto, may be examined at
         the principal office of Comtech Telecommunications Corp."

         (d)  Employee  shall  possess all rights as a  stockholder  (including,
without  limitation,  voting rights,  rights to dividends,  if any, declared and
rights on liquidation) except such as are expressly restricted by the provisions
of this Agreement.

         4. Lapse of Restrictions; Forfeiture of Shares

         (a) One-sixth of the Shares shall become Unrestricted  Shares,  subject
to satisfying  the tax  withholding  requirements  contained in Subsection  4(d)
hereof, upon the first anniversary of the date hereof.

         (b) Subject to satisfying the tax withholding requirements contained in
Subsection  4(d) hereof,  the remaining  five-sixths  of the Shares shall become
Unrestricted  Shares on the tenth  anniversary  of the date hereof,  except that
such Shares  shall become  Unrestricted  Shares on an  accelerated  basis in the
one-sixth  increments set forth in the following  schedule after the Performance
Criteria set forth therein are achieved:

                                                           Number of Shares
                                                             that become
                    Performance Criteria                 Unrestricted Shares
                    --------------------                 --------------------

o     Fiscal year-end cumulative CMDC net sales            One-sixth (1/6)
      of $3,000,000 and Net Cash Borrowings at           of Shares purchased
      that time of less than $1,000,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $500,000 and Net Cash                   of Shares purchased
      Borrowings at such time of less than
      $500,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $2,000,000 and Net Cash                 of Shares purchased
      Borrowings at such time of less than
      $100,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $3,000,000 and fiscal year Net          of Shares purchased
      Cash Flow of $1,500,000 or more


                                       3


                                                           Number of Shares
                                                             that become
                    Performance Criteria                 Unrestricted Shares
                    --------------------                 --------------------

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $7,000,000 and fiscal year Net          of Shares purchased
      Cash Flow of $2,500,000 or more


         (c)  Notwithstanding   anything  to  the  contrary  contained  in  this
Agreement,  but subject to satisfying the tax withholding requirements contained
in Subsection 4(d) hereof,  (i) all Restricted Shares shall become  Unrestricted
Shares upon  termination  of  Employee's  employment  with CMDC by reason of his
death,  total and permanent  disability  (as  determined in accordance  with the
policies and practices of Comtech),  normal  retirement  (at or after age 70 or,
with the consent of Comtech,  before age 70), or early  retirement  at Comtech's
request; and (ii) upon discharge of Employee by CMDC other than for cause (which
for this purpose shall mean Employee's willful misconduct,  dereliction of duty,
or conviction for a crime involving moral turpitude).

         (d) If, at the time any  Shares  become  Unrestricted  Shares,  Comtech
determines  that it has  withheld an amount  which is less than the  withholding
that may be required  pursuant to the Internal  Revenue Code or other applicable
law,  Employee shall forthwith pay to Comtech the amount of monies  necessary to
satisfy such withholding or equivalent  requirements.  Until the payment of such
monies or,  alternatively the execution and delivery by Employee of an agreement
satisfactory to Comtech in it sole discretion  providing for the payment of such
monies,  the Unrestricted  Shares shall not be released to Employee  pursuant to
the terms of the Escrow Agreement. If payment of such monies is not made or such
agreement is not entered into,  such  Unrestricted  Shares  shall,  at Comtech's
direction,  be sold by  Employee  to Comtech  for a purchase  price equal to the
purchase price per share provided in Section 2 hereof,  adjusted, as appropriate
for any subsequent stock-split, recapitalization or the like.

         (e) In the event of Employee's  termination of employment with CMDC for
any reason other than those  specified  in  Subsection  4(c) hereof  (including,
without  limitation,  any voluntary  termination of  employment)  all Restricted
Shares shall be sold by Employee to Comtech,  for the price and otherwise in the
manner provided in Subsection 4(d) hereof.

         5. Representations and Warranties of Employee

         Employee represents and warrants as follows:

         (a)  Assuming  that  Comtech  has  transferred  to  Employee  good  and
marketable  title to the Shares,  Employee has not taken any action or permitted
any action to occur,  nor will  employee take any action or permit any action to
occur,  that would  result in the Shares  becoming  subject to any claim,  lien,
pledge or encumbrance of any nature whatsoever.


                                       4




         (b)  Employee  has full legal power and capacity to execute and deliver
this  Agreement,  and such execution and delivery and  Employee's  acceptance of
employment with CMDC  contemporaneously  with the execution and delivery of this
Agreement are not in violation of any other agreement,  instrument or obligation
to which  Employee is a party,  including,  without  limitation,  any employment
agreement or non-competition agreement of any kind whatsoever.

         (c) This Agreement  constitutes the legal, valid and binding obligation
of Employee.

         (d)  Employee  has not  employed  any broker or finder or incurred  any
liability for any brokerage  fees or  commissions or finders' fees in connection
with this Agreement.

         (e) Employee is acquiring the Shares for  investment  purposes only and
not with a view to distribution,  and  acknowledges  that he has been advised by
his counsel, and understands, that the Shares have not been registered under the
Securities Act of 1933, as amended,  and under the  securities  laws, may not be
sold or transferred unless registered under such Act or pursuant to an exemption
from such  registration  and that a  restrictive  legend to that effect shall be
placed on the certificate(s)  representing the Shares. Employee has further been
advised by his counsel  with  respect to making an election  pursuant to Section
83(b) of the Internal  Revenue Code and has chosen,  or will choose,  whether to
make such election as he deems appropriate.

         6. Representations and Warranties of Comtech

         Comtech represents and warrants as follows:

         (a)  Comtech is a  corporation  duly  organized,  existing  and in good
standing under the laws of the State of Delaware with full power and legal right
to execute and deliver this Agreement and perform its obligations hereunder.

         (b) The  execution  and  delivery of this  Agreement by Comtech and the
performance by it of its obligations  hereunder have been duly authorized by all
necessary  corporate  action  and do not  violate  the terms of any  outstanding
agreements to which it is a party. This Agreement  constitutes the legal,  valid
and binding obligation of Comtech.

         7. Certain Employment Matters

         (a) The purchase of Shares  hereunder shall not preclude  Employee from
being eligible to participate in any other plans, programs or benefits otherwise
available to employees of Comtech or its subsidiaries. Nothing in this Agreement
shall  be   construed  to   constitute   or  be  evidence  of  an  agreement  or
understanding,  express  or  implied,  on the part of  Comtech or CMDC to employ
Employee for any specific period of time.

         (b) In  consideration  of his  employment  with  CMDC  and the sale and
issuance of the Shares to him pursuant to this  Agreement,  Employee  shall not,
during the period he is employed by CMDC and for one year  thereafter  following
Employee's  voluntary  termination  of is  employment  by CMDC,  in any  manner,
directly or indirectly, engage anywhere in the United States in any

                                       5




business which competes with the business in which CMDC or Comtech or any of its
other subsidiaries is engaged at any time during the period in which Employee is
employed  by CMDC,  and he shall  not,  directly  or  indirectly,  own,  manage,
operate, join, control or participate in the ownership, management, operation or
control of, or be employed by, or connected in any manner with any  corporation,
firm or business  that is so engaged;  provided,  however,  that nothing  herein
contained  shall  prohibit  Employee  from  owning  not  more  than  5%  of  the
outstanding stock of any publicly held corporation. If any restriction set forth
in this  Subsection  7(b) is  found  by a court  of  competent  jurisdiction  or
arbitrator to be unenforceable  because it extends for too long a period of time
or over too great a range of  activities  or in too broad a geographic  area, it
shall be interpreted  to extend only over the maximum  period of time,  range of
activities or geographic area as to which it may be enforceable.

         (c) Employee shall hold in a fiduciary capacity for the benefit of CMDC
and Comtech all confidential information, knowledge or data relating to CMDC and
Comtech  or any of its  other  subsidiaries,  and  their  respective  businesses
obtained  by  Employee  before or during the period in which he is  employed  by
CMDC.

         (d)  The  restrictions  contained  in  Subsections  (b) and (c) of this
Section 7 are necessary for the  protection of the business and goodwill of CMDC
and Comtech and are  considered  by Employee to be  reasonable  to such purpose.
Employee agrees that any breach of such  Subsections (b) and (c) will cause CMDC
and/or Comtech substantial and irreparable damage and therefore, in the event of
any such breach, in addition to such other remedies which may be available, CMDC
and/or Comtech shall have the right to seek specific  performance and injunctive
relief.

         8. Liability of Comtech

         The  liability  of  Comtech  under  this  Agreement  is  limited to the
obligations  expressly set forth herein and nothing  herein  contained  shall be
construed to impose any  liability on Comtech in favor of Employee  with respect
to any loss,  cost or expense  which  Employee may incur or suffer in connection
with or arising out of this Agreement, including, without limitation, Employee's
purchase of the Shares.

         9. Voting Concerning Certain Corporate Matters

         (a) Employee  agrees to have  counted for purposes of a quorum,  and to
vote, all Restricted Shares (whether such vote shall be by written consent or by
vote,  in  person  or, if  requested  by  Comtech,  by  proxy,  at a meeting  of
shareholders of Comtech) for the election to Comtech's Board of Directors of the
nominees from time to time designated by the Board of Directors of Comtech.

         (b) To facilitate, and not in limitation of, the agreement contained in
Subsection 9(a) hereof,  Employee irrevocably appoints the Chairman of the Board
and the Secretary of Comtech,  and their  respective  successors in office,  and
each of them, with full power of substitution,  as the lawful proxy for Employee
as to all Restricted  Shares,  to vote all  Restricted  Shares which Employee is
entitled  to vote,  for and in the name,  place and  stead of  Employee,  at any
annual,  special  or other  meeting of the  holders of shares of Comtech  Common
Stock and at any adjournment thereof, or

                                       6





pursuant to any  consent in lieu of a meeting,  for the  election  to  Comtech's
Board of  Directors  of the  nominees  designated  by the Board of  Directors of
Comtech.  The  foregoing  proxy is coupled  with an interest and  therefore  not
terminable by Employee without the consent of Comtech.

         10. Additional Restricted Shares.

         Employees  agrees that the term  "Restricted  Shares" shall include any
shares or other  securities  which he may receive or be entitled to receive as a
result of the ownership of the original  Restricted  Shares whether the same are
issued as a result of a share split, share dividend, recapitalization,  or other
subdivision or consolidation of shares effected without receipt of consideration
by Comtech or the  result of the merger or  consolidation  of Comtech or sale of
assets of Comtech.

         11. Binding Agreement

         This  Agreement  shall inure to the  benefit  of, and be binding  upon,
Comtech and its  successors  and assigns and  Employee  and his heirs,  personal
representatives, successors and assigns.

         12. Notices

         Any  notice,  request  or  other  communication  hereunder  shall be in
writing and shall be deemed to have been duly given if hand  delivered or mailed
by registered or certified mail, return receipt  requested,  addressed as herein
set forth,  or to such  other  address as may be  designated  by a notice  given
pursuant hereto,  which change of address notice shall be effective upon receipt
thereof.

          If to Comtech:

                   Comtech Telecommunications Corp.
                   105 Baylis Road
                   Melville, New York  11747

                   Attention:  Fred Kornberg, President

          Copy to:

                   Proskauer Rose LLP
                   1585 Broadway
                   New York, New York 10036

                   Attention:  Robert A. Cantone, Esq.

          If to Employee:

                   9966 Foxbourgh Circle
                   Rockville, MD  20850

                                       7





         13. Survival.

         All  of  the  representations,  warranties,  agreements  and  covenants
contained  herein or made or deemed  to have  been  made  pursuant  hereto or in
connection with the transactions contemplated hereby shall survive the execution
and  delivery  hereof  and the  consummation  of the  transactions  contemplated
hereby.

         14. Governing Law

         This  Agreement  shall be governed by and construed in accordance  with
the laws of the State of New York.

         15. Counterparts

         This Agreement may be executed in counterparts,  each of which shall be
deemed an  original  and all of which,  taken  together,  shall  constitute  one
instrument.

         16. Expenses

         Employee and Comtech shall each bear all the expenses  incurred by them
or it in  connection  with  this  Agreement  and the  transactions  contemplated
hereby.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       8




         IN WITNESS WHEREOF,  Comtech and Employee have caused this Agreement to
be executed as of the date first above written.


                                      COMTECH TELECOMMUNICATIONS CORP.


                                      By:
                                         ----------------------------------
                                                Authorized Signatory




                                      By:
                                         ----------------------------------
                                                   Ronald Johnson
                                        9


              TIME ACCELERATED RESTRICTED STOCK PURCHASE AGREEMENT

          AGREEMENT dated September 24, 1998 between Comtech  Telecommunications
Corp., a Delaware corporation ("Comtech"), and Leslie Snively ("Employee").

          WHEREAS,  Employee is employed by Comtech's  wholly-owned  subsidiary,
Comtech Mobile Datacom Corporation ("CMDC"),  and Comtech and Employee desire to
(a) provide  additional  incentives  to Employee in connection  with  Employee's
responsibilities  for the management and growth of the business of CMDC, and (b)
more closely align  Employee's  interests with the interests of  stockholders of
Comtech,  through,  in relation  to both  objectives,  the sale and  issuance to
Employee of restricted shares of Common Stock of Comtech.

          NOW, THEREFORE, Comtech and Employee agree as follows:

          1. Definitions

          (a)  "Comtech"  means  Comtech  Telecommunications  Corp.,  a Delaware
corporation.

          (b)  "Escrow  Agent"  means the Escrow  Agent as defined in the Escrow
Agreement in the form annexed hereto as Exhibit A.

          (c) "Cumulative  CMDC Pre-Tax  Profits" means CMDC's  aggregate income
before income taxes minus CMDC's  aggregate  losses in the period from inception
of operations of CMDC to the end of the relevant fiscal year.  Determinations of
such amounts  shall be made in accordance  with  generally  accepted  accounting
principles, with the exception that no effect shall be given to

                    (i) interest or like charges or accruals ("Capital Charges")
                    in respect of Comtech  cash  advances  to CMDC that are less
                    than $1.5 million plus the amount of dividends  paid by CMDC
                    to Comtech during the relevant fiscal year;

                    (ii)  Capital  Charges in excess of 1/2%  above the  average
                    rate of interest then charged to Comtech for all  borrowings
                    by Comtech,  on Comtech cash advances to CMDC exceeding $1.5
                    million at any time outstanding plus the amount of dividends
                    paid by CMDC to Comtech during the relevant fiscal year;

                    (iii)  general  or   administrative   expenses  of  Comtech,
                    including  charges  for  management  or  corporate  services
                    provided by Comtech to CMDC; or

                    (iv) the sale of shares of Comtech  Common Stock to Employee
                    and other employees of CMDC, or the repurchase of same.








          (d) "Net Cash Borrowings" means the cumulative amount of cash advances
to CMDC by Comtech.

          (e) "Net Cash Flow" means total cash  refunds by CMDC to Comtech,  net
of cash advances by Comtech to CMDC.

          (f) "Restricted  Shares" means the Shares subject to the  restrictions
against  transfer  provided  in  Section 3 hereof and which are  required  to be
resold to Comtech under certain circumstances as provided in Section 3 hereof.

          (g)  "Unrestricted  Shares" means Shares as to which all  restrictions
against transfer and the obligation to resell to Comtech have lapsed.

          (h) "Shares" shall have the meaning provided in Section 2 hereof.

          2. Sale and Purchase of Shares

          On the terms,  and  subject to the  conditions  hereinafter  provided,
simultaneously with the execution and delivery of this Agreement, (i) Comtech is
selling and issuing to Employee, and Employee is purchasing from Comtech, 35,000
shares of Common  Stock,  par value $.10 per share,  of Comtech (the  "Shares");
(ii) Employee is paying to Comtech by certified or bank cashier's  check a total
purchase  price for the  Shares  of $3,500  (i.e.,  $.10 per  share);  and (iii)
Employee  is  depositing  the Shares  with the Escrow  Agent,  to be held by the
Escrow  Agent  pursuant  and subject to the terms of an Escrow  Agreement in the
form annexed hereto as Exhibit A.

          3. Restrictions

          (a) The Shares shall not be transferred  until such time as they shall
become "Unrestricted Shares" pursuant to Section 4 hereof (the Shares subject to
such restriction being hereinafter referred to as "Restricted  Shares"). As used
in this  Agreement,  "transfer"  shall include,  without  limitation,  any sale,
assignment, gift, pledge, hypothecation,  bequest, devise, encumbrance, or other
disposition, whether voluntary or by operation of law. Any attempted transfer of
Restricted Shares (other than to Comtech pursuant to the provisions of Section 4
of this  Agreement)  shall be null and void and Comtech shall not give effect on
its records to any such attempted transfer.

          (b)  Employee  authorizes  Comtech  and  its  transfer  agents  not to
transfer  any  certificates  of Comtech  Common  Stock on its books and  records
transferred  in violation of this  Agreement,  and further  agrees that any such
purported transfer shall be void and of no effect.

          (c) An  original  of this  Agreement  shall  be kept in the  files  of
Comtech  at its  principal  office  and  reference  to this  Agreement  shall be
endorsed on all stock certificates  subject to this Agreement,  now or hereafter
issued,  by writing or stamping thereon a legend in substantially  the following
form:



                                        2





          "Sale,  assignment,  gift,  bequest,  devise,  pledge,  hypothecation,
          encumbrance  or other  disposition  of the shares  represented by this
          Certificate  is  restricted  by  the  terms  of  a  Restricted   Stock
          Agreement,  dated  September  __,  1998,  a copy  of  which,  and  any
          amendments thereto, may be examined at the principal office of Comtech
          Telecommunications Corp."

          (d) Employee  shall  possess all rights as a  stockholder  (including,
without  limitation,  voting rights,  rights to dividends,  if any, declared and
rights on liquidation) except such as are expressly restricted by the provisions
of this Agreement.

          4. Lapse of Restrictions; Forfeiture of Shares

          (a) One-sixth of the Shares shall become Unrestricted Shares,  subject
to satisfying  the tax  withholding  requirements  contained in Subsection  4(d)
hereof, upon the first anniversary of the date hereof.

          (b) Subject to satisfying the tax withholding  requirements  contained
in Subsection 4(d) hereof, the remaining  five-sixths of the Shares shall become
Unrestricted  Shares on the tenth  anniversary  of the date hereof,  except that
such Shares  shall become  Unrestricted  Shares on an  accelerated  basis in the
one-sixth  increments set forth in the following  schedule after the Performance
Criteria set forth therein are achieved:



                                                            Number of Shares
                                                              that become
              Performance Criteria                        Unrestricted Shares
              --------------------                        -------------------
o     Fiscal year-end cumulative CMDC net sales
      of $3,000,000 and Net Cash Borrowings at              One-sixth (1/6)
      that time of less than $1,000,000                   of Shares purchased

o     Fiscal year-end Cumulative CMDC Pre-Tax
      Profits of $500,000 and Net Cash                      One-sixth (1/6)
      Borrowings at such time of less than                of Shares purchased
      $500,000
o     Fiscal year-end Cumulative CMDC Pre-Tax
      Profits of $2,000,000 and Net Cash                    One-sixth (1/6)
      Borrowings at such time of less than                of Shares purchased
      $100,000
o     Fiscal year-end Cumulative CMDC Pre-Tax
      Profits of $3,000,000 and fiscal year Net             One-sixth (1/6)
      Cash Flow of $1,500,000 or more                     of Shares purchased



                                        3



                                                            Number of Shares
                                                              that become
              Performance Criteria                        Unrestricted Shares
              --------------------                        -------------------
o     Fiscal year-end Cumulative CMDC Pre-Tax
      Profits of $7,000,000 and fiscal year Net             One-sixth (1/6)
      Cash Flow of $2,500,000 or more                     of Shares purchased


          (c)  Notwithstanding  anything  to  the  contrary  contained  in  this
Agreement,  but subject to satisfying the tax withholding requirements contained
in Subsection 4(d) hereof,  (i) all Restricted Shares shall become  Unrestricted
Shares upon  termination  of  Employee's  employment  with CMDC by reason of his
death,  total and permanent  disability  (as  determined in accordance  with the
policies and practices of Comtech),  normal  retirement  (at or after age 70 or,
with the consent of Comtech,  before age 70), or early  retirement  at Comtech's
request; and (ii) upon discharge of Employee by CMDC other than for cause (which
for this purpose shall mean Employee's willful misconduct,  dereliction of duty,
or conviction for a crime involving moral turpitude).

          (d) If, at the time any Shares  become  Unrestricted  Shares,  Comtech
determines  that it has  withheld an amount  which is less than the  withholding
that may be required  pursuant to the Internal  Revenue Code or other applicable
law,  Employee shall forthwith pay to Comtech the amount of monies  necessary to
satisfy such withholding or equivalent  requirements.  Until the payment of such
monies or,  alternatively the execution and delivery by Employee of an agreement
satisfactory to Comtech in it sole discretion  providing for the payment of such
monies,  the Unrestricted  Shares shall not be released to Employee  pursuant to
the terms of the Escrow Agreement. If payment of such monies is not made or such
agreement is not entered into,  such  Unrestricted  Shares  shall,  at Comtech's
direction,  be sold by  Employee  to Comtech  for a purchase  price equal to the
purchase price per share provided in Section 2 hereof,  adjusted, as appropriate
for any subsequent stock-split, recapitalization or the like.

          (e) In the event of Employee's termination of employment with CMDC for
any reason other than those  specified  in  Subsection  4(c) hereof  (including,
without  limitation,  any voluntary  termination of  employment)  all Restricted
Shares shall be sold by Employee to Comtech,  for the price and otherwise in the
manner provided in Subsection 4(d) hereof.

          5. Representations and Warranties of Employee

          Employee represents and warrants as follows:

          (a)  Assuming  that  Comtech  has  transferred  to  Employee  good and
marketable  title to the Shares,  Employee has not taken any action or permitted
any action to occur,  nor will  employee take any action or permit any action to
occur,  that would  result in the Shares  becoming  subject to any claim,  lien,
pledge or encumbrance of any nature whatsoever.



                                        4





          (b)  Employee has full legal power and capacity to execute and deliver
this  Agreement,  and such execution and delivery and  Employee's  acceptance of
employment with CMDC  contemporaneously  with the execution and delivery of this
Agreement are not in violation of any other agreement,  instrument or obligation
to which  Employee is a party,  including,  without  limitation,  any employment
agreement or non-competition agreement of any kind whatsoever.

          (c) This Agreement constitutes the legal, valid and binding obligation
of Employee.

          (d)  Employee  has not  employed  any broker or finder or incurred any
liability for any brokerage  fees or  commissions or finders' fees in connection
with this Agreement.

          (e) Employee is acquiring the Shares for investment  purposes only and
not with a view to distribution,  and  acknowledges  that he has been advised by
his counsel, and understands, that the Shares have not been registered under the
Securities Act of 1933, as amended,  and under the  securities  laws, may not be
sold or transferred unless registered under such Act or pursuant to an exemption
from such  registration  and that a  restrictive  legend to that effect shall be
placed on the certificate(s)  representing the Shares. Employee has further been
advised by his counsel  with  respect to making an election  pursuant to Section
83(b) of the Internal  Revenue Code and has chosen,  or will choose,  whether to
make such election as he deems appropriate.

          6. Representations and Warranties of Comtech

          Comtech represents and warrants as follows:

          (a) Comtech is a  corporation  duly  organized,  existing  and in good
standing under the laws of the State of Delaware with full power and legal right
to execute and deliver this Agreement and perform its obligations hereunder.

          (b) The  execution  and delivery of this  Agreement by Comtech and the
performance by it of its obligations  hereunder have been duly authorized by all
necessary  corporate  action  and do not  violate  the terms of any  outstanding
agreements to which it is a party. This Agreement  constitutes the legal,  valid
and binding obligation of Comtech.

          7. Certain Employment Matters

          (a) The purchase of Shares hereunder shall not preclude  Employee from
being eligible to participate in any other plans, programs or benefits otherwise
available to employees of Comtech or its subsidiaries. Nothing in this Agreement
shall  be   construed  to   constitute   or  be  evidence  of  an  agreement  or
understanding,  express  or  implied,  on the part of  Comtech or CMDC to employ
Employee for any specific period of time.

          (b) In  consideration  of his  employment  with  CMDC and the sale and
issuance of the Shares to him pursuant to this  Agreement,  Employee  shall not,
during the period he is employed by CMDC and for one year  thereafter  following
Employee's  voluntary  termination  of is  employment  by CMDC,  in any  manner,
directly or indirectly, engage anywhere in the United States in any


                                        5





business which competes with the business in which CMDC or Comtech or any of its
other subsidiaries is engaged at any time during the period in which Employee is
employed  by CMDC,  and he shall  not,  directly  or  indirectly,  own,  manage,
operate, join, control or participate in the ownership, management, operation or
control of, or be employed by, or connected in any manner with any  corporation,
firm or business  that is so engaged;  provided,  however,  that nothing  herein
contained  shall  prohibit  Employee  from  owning  not  more  than  5%  of  the
outstanding stock of any publicly held corporation. If any restriction set forth
in this  Subsection  7(b) is  found  by a court  of  competent  jurisdiction  or
arbitrator to be unenforceable  because it extends for too long a period of time
or over too great a range of  activities  or in too broad a geographic  area, it
shall be interpreted  to extend only over the maximum  period of time,  range of
activities or geographic area as to which it may be enforceable.

          (c)  Employee  shall hold in a fiduciary  capacity  for the benefit of
CMDC and Comtech all  confidential  information,  knowledge or data  relating to
CMDC  and  Comtech  or any of  its  other  subsidiaries,  and  their  respective
businesses  obtained  by  Employee  before or during  the  period in which he is
employed by CMDC.

          (d) The  restrictions  contained  in  Subsections  (b) and (c) of this
Section 7 are necessary for the  protection of the business and goodwill of CMDC
and Comtech and are  considered  by Employee to be  reasonable  to such purpose.
Employee agrees that any breach of such  Subsections (b) and (c) will cause CMDC
and/or Comtech substantial and irreparable damage and therefore, in the event of
any such breach, in addition to such other remedies which may be available, CMDC
and/or Comtech shall have the right to seek specific  performance and injunctive
relief.

          8. Liability of Comtech

          The  liability  of  Comtech  under  this  Agreement  is limited to the
obligations  expressly set forth herein and nothing  herein  contained  shall be
construed to impose any  liability on Comtech in favor of Employee  with respect
to any loss,  cost or expense  which  Employee may incur or suffer in connection
with or arising out of this Agreement, including, without limitation, Employee's
purchase of the Shares.

          9. Voting Concerning Certain Corporate Matters

          (a) Employee  agrees to have counted for purposes of a quorum,  and to
vote, all Restricted Shares (whether such vote shall be by written consent or by
vote,  in  person  or, if  requested  by  Comtech,  by  proxy,  at a meeting  of
shareholders of Comtech) for the election to Comtech's Board of Directors of the
nominees from time to time designated by the Board of Directors of Comtech.

          (b) To facilitate,  and not in limitation of, the agreement  contained
in Subsection  9(a) hereof,  Employee  irrevocably  appoints the Chairman of the
Board and the Secretary of Comtech,  and their respective  successors in office,
and each of them,  with full  power of  substitution,  as the  lawful  proxy for
Employee  as to all  Restricted  Shares,  to vote all  Restricted  Shares  which
Employee is entitled to vote, for and in the name,  place and stead of Employee,
at any  annual,  special or other  meeting  of the  holders of shares of Comtech
Common Stock and at any adjournment thereof, or


                                        6





pursuant to any  consent in lieu of a meeting,  for the  election  to  Comtech's
Board of  Directors  of the  nominees  designated  by the Board of  Directors of
Comtech.  The  foregoing  proxy is coupled  with an interest and  therefore  not
terminable by Employee without the consent of Comtech.

          10. Additional Restricted Shares.

          Employees agrees that the term  "Restricted  Shares" shall include any
shares or other  securities  which he may receive or be entitled to receive as a
result of the ownership of the original  Restricted  Shares whether the same are
issued as a result of a share split, share dividend, recapitalization,  or other
subdivision or consolidation of shares effected without receipt of consideration
by Comtech or the  result of the merger or  consolidation  of Comtech or sale of
assets of Comtech.

          11. Binding Agreement

          This  Agreement  shall inure to the  benefit of, and be binding  upon,
Comtech and its  successors  and assigns and  Employee  and his heirs,  personal
representatives, successors and assigns.

          12. Notices

          Any  notice,  request  or other  communication  hereunder  shall be in
writing and shall be deemed to have been duly given if hand  delivered or mailed
by registered or certified mail, return receipt  requested,  addressed as herein
set forth,  or to such  other  address as may be  designated  by a notice  given
pursuant hereto,  which change of address notice shall be effective upon receipt
thereof.

          If to Comtech:

               Comtech Telecommunications Corp.
               105 Baylis Road
               Melville, New York  11747

               Attention:  Fred Kornberg, President

          Copy to:

               Proskauer Rose LLP
               1585 Broadway
               New York, New York 10036

               Attention:  Robert A. Cantone, Esq.

          If to Employee:

               290 W. Prestwick Way
               Castle Rock, CO  80104

                                        7



               13.      Survival.

          All of  the  representations,  warranties,  agreements  and  covenants
contained  herein or made or deemed  to have  been  made  pursuant  hereto or in
connection with the transactions contemplated hereby shall survive the execution
and  delivery  hereof  and the  consummation  of the  transactions  contemplated
hereby.

          14. Governing Law

          This Agreement  shall be governed by and construed in accordance  with
the laws of the State of New York.

          15. Counterparts

          This Agreement may be executed in counterparts, each of which shall be
deemed an  original  and all of which,  taken  together,  shall  constitute  one
instrument.

          16. Expenses

          Employee and Comtech shall each bear all the expenses incurred by them
or it in  connection  with  this  Agreement  and the  transactions  contemplated
hereby.

          [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                        8




          IN WITNESS WHEREOF, Comtech and Employee have caused this Agreement to
be executed as of the date first above written.


                                               COMTECH TELECOMMUNICATIONS CORP.


                                                By: _________________________
                                                      Authorized Signatory


                                                    __________________________
                                                      Leslie Snively



                                        9


              TIME ACCELERATED RESTRICTED STOCK PURCHASE AGREEMENT


       AGREEMENT  dated  September 24, 1998 between  Comtech  Telecommunications
Corp., a Delaware corporation ("Comtech"), and Dan Veeneman ("Employee").

       WHEREAS,  Employee  is  employed by  Comtech's  wholly-owned  subsidiary,
Comtech Mobile Datacom Corporation ("CMDC"),  and Comtech and Employee desire to
(a) provide  additional  incentives  to Employee in connection  with  Employee's
responsibilities  for the management and growth of the business of CMDC, and (b)
more closely align  Employee's  interests with the interests of  stockholders of
Comtech,  through,  in relation  to both  objectives,  the sale and  issuance to
Employee of restricted shares of Common Stock of Comtech.

       NOW, THEREFORE, Comtech and Employee agree as follows:

       1.     Definitions

       (a)    "Comtech"  means Comtech  Telecommunications   Corp.,  a  Delaware
corporation.

       (b)    "Escrow  Agent"  means the Escrow  Agent as defined  in the Escrow
Agreement in the form annexed hereto as Exhibit A.

       (c)    "Cumulative  CMDC Pre-Tax Profits"  means CMDC's aggregate  income
before income taxes minus CMDC's  aggregate  losses in the period from inception
of operations of CMDC to the end of the relevant fiscal year.  Determinations of
such amounts  shall be made in accordance  with  generally  accepted  accounting
principles, with the exception that no effect shall be given to

              (i)  interest or like charges or accruals  ("Capital  Charges") in
              respect of Comtech  cash  advances to CMDC that are less than $1.5
              million  plus the  amount  of  dividends  paid by CMDC to  Comtech
              during the relevant fiscal year;

              (ii)  Capital  Charges in excess of 1/2% above the average rate of
              interest then charged to Comtech for all borrowings by Comtech, on
              Comtech cash advances to CMDC  exceeding  $1.5 million at any time
              outstanding  plus the amount of dividends  paid by CMDC to Comtech
              during the relevant fiscal year;

              (iii)  general or  administrative  expenses of Comtech,  including
              charges for management or corporate  services  provided by Comtech
              to CMDC;  or (iv) the sale of shares of  Comtech  Common  Stock to
              Employee and other employees of CMDC, or the repurchase of same.

                                       1


       (d)    "Net Cash Borrowings" means the cumulative amount of cash advances
to CMDC by Comtech.

       (e)    "Net Cash Flow" means total cash  refunds by  CMDC to Comtech, net
of cash advances by Comtech to CMDC.

       (f)    "Restricted    Shares"   means  the   Shares   subject  to   the
restrictions  against  transfer  provided  in  Section  3 hereof  and  which are
required  to be resold to Comtech  under  certain  circumstances  as provided in
Section 3 hereof.

       (g)  "Unrestricted  Shares"  means  Shares as to which  all  restrictions
against transfer and the obligation to resell to Comtech have lapsed.

       (h)    "Shares" shall have the meaning provided in Section 2 hereof.

       2.     Sale and Purchase of Shares

       On the  terms,  and  subject  to  the  conditions  hereinafter  provided,
simultaneously with the execution and delivery of this Agreement, (i) Comtech is
selling and issuing to Employee, and Employee is purchasing from Comtech, 25,000
shares of Common  Stock,  par value $.10 per share,  of Comtech (the  "Shares");
(ii) Employee is paying to Comtech by certified or bank cashier's  check a total
purchase  price for the  Shares  of $2,500  (i.e.,  $.10 per  share);  and (iii)
Employee  is  depositing  the Shares  with the Escrow  Agent,  to be held by the
Escrow  Agent  pursuant  and subject to the terms of an Escrow  Agreement in the
form annexed hereto as Exhibit A.

       3.     Restrictions

       (a)    The  Shares  shall not  be  transferred  until  such time as  they
shall  become  "Unrestricted  Shares"  pursuant  to Section 4 hereof (the Shares
subject  to  such  restriction  being  hereinafter  referred  to as  "Restricted
Shares").  As  used  in  this  Agreement,   "transfer"  shall  include,  without
limitation, any sale, assignment, gift, pledge, hypothecation,  bequest, devise,
encumbrance, or other disposition, whether voluntary or by operation of law. Any
attempted  transfer of Restricted  Shares (other than to Comtech pursuant to the
provisions  of Section 4 of this  Agreement)  shall be null and void and Comtech
shall not give effect on its records to any such attempted transfer.

       (b)    Employee   authorizes   Comtech  and its  transfer  agents not to
transfer  any  certificates  of Comtech  Common  Stock on its books and  records
transferred  in violation of this  Agreement,  and further  agrees that any such
purported transfer shall be void and of no effect.

       (c)    An  original of this  Agreement  shall be  kept  in  the files of
Comtech  at its  principal  office  and  reference  to this  Agreement  shall be
endorsed on all stock certificates  subject to this Agreement,  now or hereafter
issued,  by writing or stamping thereon a legend in substantially  the following
form:

                                       2



       "Sale,  assignment,   gift,  bequest,   devise,  pledge,   hypothecation,
       encumbrance  or  other  disposition  of the  shares  represented  by this
       Certificate is restricted by the terms of a Restricted  Stock  Agreement,
       dated  September __, 1998, a copy of which,  and any amendments  thereto,
       may be examined  at the  principal  office of Comtech  Telecommunications
       Corp."

       (d)    Employee  shall  possess all  rights as a  stockholder (including,
without  limitation,  voting rights,  rights to dividends,  if any, declared and
rights on liquidation) except such as are expressly restricted by the provisions
of this Agreement.

       4.     Lapse of Restrictions; Forfeiture of Shares

       (a)    One-sixth of the Shares shall become Unrestricted Shares,  subject
to satisfying  the tax  withholding  requirements  contained in Subsection  4(d)
hereof, upon the first anniversary of the date hereof.

       (b)    Subject to satisfying the tax withholding  requirements  contained
in Subsection 4(d) hereof, the remaining  five-sixths of the Shares shall become
Unrestricted  Shares on the tenth  anniversary  of the date hereof,  except that
such Shares  shall become  Unrestricted  Shares on an  accelerated  basis in the
one-sixth  increments set forth in the following  schedule after the Performance
Criteria set forth therein are achieved:



                                                           Number of Shares
                                                             that become
              Performance Criteria                       Unrestricted Shares
              --------------------                       -------------------

o     Fiscal year-end cumulative CMDC net sales            One-sixth (1/6)
      of $3,000,000 and Net Cash Borrowings at           of Shares purchased
      that time of less than $1,000,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $500,000 and Net Cash                   of Shares purchased
      Borrowings at such time of less than
      $500,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $2,000,000 and Net Cash                 of Shares purchased
      Borrowings at such time of less than
      $100,000

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $3,000,000 and fiscal year Net          of Shares purchased
      Cash Flow of $1,500,000 or more


                                       3



                                                           Number of Shares
                                                             that become
              Performance Criteria                       Unrestricted Shares
              --------------------                       -------------------

o     Fiscal year-end Cumulative CMDC Pre-Tax              One-sixth (1/6)
      Profits of $7,000,000 and fiscal year Net          of Shares purchased
      Cash Flow of $2,500,000 or more


       (c)    Notwithstanding  anything  to  the  contrary   contained   in this
Agreement,  but subject to satisfying the tax withholding requirements contained
in Subsection 4(d) hereof,  (i) all Restricted Shares shall become  Unrestricted
Shares upon  termination  of  Employee's  employment  with CMDC by reason of his
death,  total and permanent  disability  (as  determined in accordance  with the
policies and practices of Comtech),  normal  retirement  (at or after age 70 or,
with the consent of Comtech,  before age 70), or early  retirement  at Comtech's
request; and (ii) upon discharge of Employee by CMDC other than for cause (which
for this purpose shall mean Employee's willful misconduct,  dereliction of duty,
or conviction for a crime involving moral turpitude).

       (d)    If, at the time  any Shares  become  Unrestricted  Shares, Comtech
determines  that it has  withheld an amount  which is less than the  withholding
that may be required  pursuant to the Internal  Revenue Code or other applicable
law,  Employee shall forthwith pay to Comtech the amount of monies  necessary to
satisfy such withholding or equivalent  requirements.  Until the payment of such
monies or,  alternatively the execution and delivery by Employee of an agreement
satisfactory to Comtech in it sole discretion  providing for the payment of such
monies,  the Unrestricted  Shares shall not be released to Employee  pursuant to
the terms of the Escrow Agreement. If payment of such monies is not made or such
agreement is not entered into,  such  Unrestricted  Shares  shall,  at Comtech's
direction,  be sold by  Employee  to Comtech  for a purchase  price equal to the
purchase price per share provided in Section 2 hereof,  adjusted, as appropriate
for any subsequent stock-split, recapitalization or the like.

       (e)    In the  event of Employee's  termination  of employment  with CMDC
for any reason other than those specified in Subsection 4(c) hereof  (including,
without  limitation,  any voluntary  termination of  employment)  all Restricted
Shares shall be sold by Employee to Comtech,  for the price and otherwise in the
manner provided in Subsection 4(d) hereof.

       5.     Representations and Warranties of Employee

       Employee represents and warrants as follows:

       (a)    Assuming  that  Comtech  has  transferred  to  Employee  good  and
marketable  title to the Shares,  Employee has not taken any action or permitted
any action to occur,  nor will  employee take any action or permit any action to
occur,  that would  result in the Shares  becoming  subject to any claim,  lien,
pledge or encumbrance of any nature whatsoever.


                                       4



       (b)    Employee   has  full  legal  power  and  capacity  to  execute and
deliver  this  Agreement,   and  such  execution  and  delivery  and  Employee's
acceptance  of  employment  with CMDC  contemporaneously  with the execution and
delivery  of  this  Agreement  are  not in  violation  of any  other  agreement,
instrument  or  obligation  to which  Employee  is a party,  including,  without
limitation,  any employment  agreement or non-competition  agreement of any kind
whatsoever.

       (c)    This Agreement constitutes the legal, valid and binding obligation
of Employee.

       (d)    Employee  has not employed  any  broker or finder or incurred  any
liability for any brokerage  fees or  commissions or finders' fees in connection
with this Agreement.

       (e)    Employee is acquiring the  Shares for investment purposes only and
not with a view to distribution,  and  acknowledges  that he has been advised by
his counsel, and understands, that the Shares have not been registered under the
Securities Act of 1933, as amended,  and under the  securities  laws, may not be
sold or transferred unless registered under such Act or pursuant to an exemption
from such  registration  and that a  restrictive  legend to that effect shall be
placed on the certificate(s)  representing the Shares. Employee has further been
advised by his counsel  with  respect to making an election  pursuant to Section
83(b) of the Internal  Revenue Code and has chosen,  or will choose,  whether to
make such election as he deems appropriate.

       6.     Representations and Warranties of Comtech

       Comtech represents and warrants as follows:

       (a)    Comtech  is a  corporation  duly  organized, existing  and in good
standing under the laws of the State of Delaware with full power and legal right
to execute and deliver this Agreement and perform its obligations hereunder.

       (b)    The  execution  and delivery of this  Agreement by Comtech and the
performance by it of its obligations  hereunder have been duly authorized by all
necessary  corporate  action  and do not  violate  the terms of any  outstanding
agreements to which it is a party. This Agreement  constitutes the legal,  valid
and binding obligation of Comtech.

       7.     Certain Employment Matters

       (a)    The purchase of Shares  hereunder shall not preclude Employee from
being eligible to participate in any other plans, programs or benefits otherwise
available to employees of Comtech or its subsidiaries. Nothing in this Agreement
shall  be   construed  to   constitute   or  be  evidence  of  an  agreement  or
understanding,  express  or  implied,  on the part of  Comtech or CMDC to employ
Employee for any specific period of time.

       (b)    In  consideration of his employment  with  CMDC  and the  sale and
issuance of the Shares to him pursuant to this  Agreement,  Employee  shall not,
during the period he is employed by CMDC and for one year  thereafter  following
Employee's  voluntary  termination  of is  employment  by CMDC,  in any  manner,
directly or indirectly, engage anywhere in the United States in any


                                       5



business which competes with the business in which CMDC or Comtech or any of its
other subsidiaries is engaged at any time during the period in which Employee is
employed  by CMDC,  and he shall  not,  directly  or  indirectly,  own,  manage,
operate, join, control or participate in the ownership, management, operation or
control of, or be employed by, or connected in any manner with any  corporation,
firm or business  that is so engaged;  provided,  however,  that nothing  herein
contained  shall  prohibit  Employee  from  owning  not  more  than  5%  of  the
outstanding stock of any publicly held corporation. If any restriction set forth
in this  Subsection  7(b) is  found  by a court  of  competent  jurisdiction  or
arbitrator to be unenforceable  because it extends for too long a period of time
or over too great a range of  activities  or in too broad a geographic  area, it
shall be interpreted  to extend only over the maximum  period of time,  range of
activities or geographic area as to which it may be enforceable.

       (c)    Employee  shall  hold  in  a fiduciary capacity for the benefit of
CMDC and Comtech all  confidential  information,  knowledge or data  relating to
CMDC  and  Comtech  or any of  its  other  subsidiaries,  and  their  respective
businesses  obtained  by  Employee  before or during  the  period in which he is
employed by CMDC.

       (d)    The  restrictions  contained  in  Subsections (b)  and (c) of this
Section 7 are necessary for the  protection of the business and goodwill of CMDC
and Comtech and are  considered  by Employee to be  reasonable  to such purpose.
Employee agrees that any breach of such  Subsections (b) and (c) will cause CMDC
and/or Comtech substantial and irreparable damage and therefore, in the event of
any such breach, in addition to such other remedies which may be available, CMDC
and/or Comtech shall have the right to seek specific  performance and injunctive
relief.

       8.      Liability of Comtech

       The  liability  of  Comtech  under  this  Agreement  is  limited  to  the
obligations  expressly set forth herein and nothing  herein  contained  shall be
construed to impose any  liability on Comtech in favor of Employee  with respect
to any loss,  cost or expense  which  Employee may incur or suffer in connection
with or arising out of this Agreement, including, without limitation, Employee's
purchase of the Shares.

       9.     Voting Concerning Certain Corporate Matters

       (a)    Employee  agrees to have  counted for purposes of a quorum, and to
vote, all Restricted Shares (whether such vote shall be by written consent or by
vote,  in  person  or, if  requested  by  Comtech,  by  proxy,  at a meeting  of
shareholders of Comtech) for the election to Comtech's Board of Directors of the
nominees from time to time designated by the Board of Directors of Comtech.

       (b)    To facilitate,  and not in limitation of, the agreement  contained
in Subsection  9(a) hereof,  Employee  irrevocably  appoints the Chairman of the
Board and the Secretary of Comtech,  and their respective  successors in office,
and each of them,  with full  power of  substitution,  as the  lawful  proxy for
Employee  as to all  Restricted  Shares,  to vote all  Restricted  Shares  which
Employee is entitled to vote, for and in the name,  place and stead of Employee,
at any  annual,  special or other  meeting  of the  holders of shares of Comtech
Common Stock and at any adjournment  thereof, or


                                        6



pursuant to any  consent in lieu of a meeting,  for the  election  to  Comtech's
Board of  Directors  of the  nominees  designated  by the Board of  Directors of
Comtech.  The  foregoing  proxy is coupled  with an interest and  therefore  not
terminable by Employee without the consent of Comtech.

       10.    Additional Restricted Shares.

       Employees  agrees that the term  "Restricted  Shares"  shall  include any
shares or other  securities  which he may receive or be entitled to receive as a
result of the ownership of the original  Restricted  Shares whether the same are
issued as a result of a share split, share dividend, recapitalization,  or other
subdivision or consolidation of shares effected without receipt of consideration
by Comtech or the  result of the merger or  consolidation  of Comtech or sale of
assets of Comtech.

       11.    Binding Agreement

       This  Agreement  shall  inure to the  benefit  of, and be  binding  upon,
Comtech and its  successors  and assigns and  Employee  and his heirs,  personal
representatives, successors and assigns.

       12.    Notices

       Any notice, request or other communication  hereunder shall be in writing
and  shall be deemed to have  been  duly  given if hand  delivered  or mailed by
registered or certified mail, return receipt requested,  addressed as herein set
forth,  or to such other address as may be designated by a notice given pursuant
hereto, which change of address notice shall be effective upon receipt thereof.

           If to Comtech:

                    Comtech Telecommunications Corp.
                    105 Baylis Road
                    Melville, New York  11747

                    Attention:  Fred Kornberg, President

           Copy to:

                    Proskauer Rose LLP
                    1585 Broadway
                    New York, New York 10036

                    Attention:  Robert A. Cantone, Esq.

           If to Employee:

                    11754 Lone Tree
                    Columbia, MD  20144


                                       7




       13.    Survival.

       All  of  the  representations,   warranties,   agreements  and  covenants
contained  herein or made or deemed  to have  been  made  pursuant  hereto or in
connection with the transactions contemplated hereby shall survive the execution
and  delivery  hereof  and the  consummation  of the  transactions  contemplated
hereby.

       14.    Governing Law

       This Agreement  shall be governed by and construed in accordance with the
laws of the State of New York.

       15.    Counterparts

       This  Agreement may be executed in  counterparts,  each of which shall be
deemed an  original  and all of which,  taken  together,  shall  constitute  one
instrument.

       16.    Expenses

       Employee and Comtech shall each bear all the expenses incurred by them or
it in connection with this Agreement and the transactions  contemplated  hereby.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                        8




       IN WITNESS WHEREOF, Comtech and Employee have caused this Agreement to be
executed as of the date first above written.


                                     COMTECH TELECOMMUNICATIONS CORP.


                                     By:_______________________________________
                                                Authorized Signatory


                                        _______________________________________
                                                Dan Veeneman


                                        9



              TIME ACCELERATED RESTRICTED STOCK PURCHASE AGREEMENT

         AGREEMENT dated  September 24, 1998 between Comtech  Telecommunications
Corp., a Delaware corporation ("Comtech"), and Brent Taylor ("Employee").

         WHEREAS,  Employee is employed by  Comtech's  wholly-owned  subsidiary,
Comtech Mobile Datacom Corporation ("CMDC"),  and Comtech and Employee desire to
(a) provide  additional  incentives  to Employee in connection  with  Employee's
responsibilities  for the management and growth of the business of CMDC, and (b)
more closely align  Employee's  interests with the interests of  stockholders of
Comtech,  through,  in relation  to both  objectives,  the sale and  issuance to
Employee of restricted shares of Common Stock of Comtech.

         NOW, THEREFORE, Comtech and Employee agree as follows:

         1. Definitions

         (a)  "Comtech"  means  Comtech  Telecommunications  Corp.,  a  Delaware
corporation.

         (b)  "Escrow  Agent"  means the  Escrow  Agent as defined in the Escrow
Agreement in the form annexed hereto as Exhibit A.

         (c) "Cumulative  CMDC Pre-Tax  Profits" means CMDC's  aggregate  income
before income taxes minus CMDC's  aggregate  losses in the period from inception
of operations of CMDC to the end of the relevant fiscal year.  Determinations of
such amounts  shall be made in accordance  with  generally  accepted  accounting
principles, with the exception that no effect shall be given to

              (i)   interest or like charges or accruals ("Capital  Charges") in
                    respect of Comtech cash  advances to CMDC that are less than
                    $1.5 million  plus the amount of  dividends  paid by CMDC to
                    Comtech during the relevant fiscal year;

              (ii)  Capital  Charges in excess of 1/2% above the average rate of
                    interest  then  charged to  Comtech  for all  borrowings  by
                    Comtech,  on Comtech cash  advances to CMDC  exceeding  $1.5
                    million at any time outstanding plus the amount of dividends
                    paid by CMDC to Comtech during the relevant fiscal year;

              (iii) general or  administrative  expenses of  Comtech,  including
                    charges for  management  or corporate  services  provided by
                    Comtech to CMDC; or

              (iv)  the sale of shares of Comtech  Common  Stock to Employee and
                    other employees of CMDC, or the repurchase of same.



         (d) "Net Cash Borrowings"  means the cumulative amount of cash advances
to CMDC by Comtech.

         (e) "Net Cash Flow" means total cash refunds by CMDC to Comtech, net of
cash advances by Comtech to CMDC.

         (f)  "Restricted  Shares" means the Shares subject to the  restrictions
against  transfer  provided  in  Section 3 hereof and which are  required  to be
resold to Comtech under certain circumstances as provided in Section 3 hereof.

         (g)  "Unrestricted  Shares"  means Shares as to which all  restrictions
against transfer and the obligation to resell to Comtech have lapsed.

         (h) "Shares" shall have the meaning provided in Section 2 hereof.

         2. Sale and Purchase of Shares

         On the terms,  and  subject  to the  conditions  hereinafter  provided,
simultaneously with the execution and delivery of this Agreement, (i) Comtech is
selling and issuing to Employee, and Employee is purchasing from Comtech, 35,000
shares of Common  Stock,  par value $.10 per share,  of Comtech (the  "Shares");
(ii) Employee is paying to Comtech by certified or bank cashier's  check a total
purchase  price for the  Shares  of $3,500  (i.e.,  $.10 per  share);  and (iii)
Employee  is  depositing  the Shares  with the Escrow  Agent,  to be held by the
Escrow  Agent  pursuant  and subject to the terms of an Escrow  Agreement in the
form annexed hereto as Exhibit A.

         3. Restrictions

         (a) The Shares shall not be  transferred  until such time as they shall
become "Unrestricted Shares" pursuant to Section 4 hereof (the Shares subject to
such restriction being hereinafter referred to as "Restricted  Shares"). As used
in this  Agreement,  "transfer"  shall include,  without  limitation,  any sale,
assignment, gift, pledge, hypothecation,  bequest, devise, encumbrance, or other
disposition, whether voluntary or by operation of law. Any attempted transfer of
Restricted Shares (other than to Comtech pursuant to the provisions of Section 4
of this  Agreement)  shall be null and void and Comtech shall not give effect on
its records to any such attempted transfer.

         (b) Employee authorizes Comtech and its transfer agents not to transfer
any certificates of Comtech Common Stock on its books and records transferred in
violation of this Agreement, and further agrees that any such purported transfer
shall be void and of no effect.

         (c) An original of this Agreement shall be kept in the files of Comtech
at its principal office and reference to this Agreement shall be endorsed on all
stock  certificates  subject to this  Agreement,  now or  hereafter  issued,  by
writing or stamping thereon a legend in substantially the following form:

                                       2

          "Sale,   assignment,    gift,   bequest,   devise,   pledge,
          hypothecation,  encumbrance  or  other  disposition  of  the
          shares  represented by this Certificate is restricted by the
          terms of a Restricted Stock  Agreement,  dated September __,
          1998, a copy of which,  and any amendments  thereto,  may be
          examined    at   the    principal    office    of    Comtech
          Telecommunications Corp."

         (d)  Employee  shall  possess  all  rights  as a  stockholder
(including, without limitation, voting rights, rights to dividends, if
any, declared and rights on liquidation)  except such as are expressly
restricted by the provisions of this Agreement.

         4. Lapse of Restrictions; Forfeiture of Shares

         (a) One-sixth of the Shares shall become Unrestricted Shares,
subject to satisfying the tax  withholding  requirements  contained in
Subsection 4(d) hereof, upon the first anniversary of the date hereof.

         (b) Subject to satisfying  the tax  withholding  requirements
contained in Subsection 4(d) hereof, the remaining  five-sixths of the
Shares shall become  Unrestricted  Shares on the tenth  anniversary of
the date hereof,  except that such Shares  shall  become  Unrestricted
Shares on an accelerated  basis in the one-sixth  increments set forth
in the following  schedule  after the  Performance  Criteria set forth
therein are achieved:

                                                        Number of Shares
                                                          that become
                    Performance Criteria              Unrestricted Shares
                    --------------------              -------------------

o     Fiscal year-end cumulative CMDC net sales         One-sixth (1/6)
      of $3,000,000 and Net Cash Borrowings at        of Shares purchased
      that time of less than $1,000,000

o     Fiscal year-end Cumulative CMDC Pre-Tax           One-sixth (1/6)
      Profits of $500,000 and Net Cash                of Shares purchased
      Borrowings at such time of less than
      $500,000

o     Fiscal year-end Cumulative CMDC Pre-Tax           One-sixth (1/6)
      Profits of $2,000,000 and Net Cash              of Shares purchased
      Borrowings at such time of less than
      $100,000

o     Fiscal year-end Cumulative CMDC Pre-Tax           One-sixth (1/6)
      Profits of $3,000,000 and fiscal year Net       of Shares purchased
      Cash Flow of $1,500,000 or more

                                  3



                                                        Number of Shares
                                                          that become
                    Performance Criteria              Unrestricted Shares
                    --------------------              -------------------

o     Fiscal year-end Cumulative CMDC Pre-Tax           One-sixth (1/6)
      Profits of $7,000,000 and fiscal year Net       of Shares purchased
      Cash Flow of $2,500,000 or more


         (c)  Notwithstanding   anything  to  the  contrary  contained  in  this
Agreement,  but subject to satisfying the tax withholding requirements contained
in Subsection 4(d) hereof,  (i) all Restricted Shares shall become  Unrestricted
Shares upon  termination  of  Employee's  employment  with CMDC by reason of his
death,  total and permanent  disability  (as  determined in accordance  with the
policies and practices of Comtech),  normal  retirement  (at or after age 70 or,
with the consent of Comtech,  before age 70), or early  retirement  at Comtech's
request; and (ii) upon discharge of Employee by CMDC other than for cause (which
for this purpose shall mean Employee's willful misconduct,  dereliction of duty,
or conviction for a crime involving moral turpitude).

         (d) If, at the time any  Shares  become  Unrestricted  Shares,  Comtech
determines  that it has  withheld an amount  which is less than the  withholding
that may be required  pursuant to the Internal  Revenue Code or other applicable
law,  Employee shall forthwith pay to Comtech the amount of monies  necessary to
satisfy such withholding or equivalent  requirements.  Until the payment of such
monies or,  alternatively the execution and delivery by Employee of an agreement
satisfactory to Comtech in it sole discretion  providing for the payment of such
monies,  the Unrestricted  Shares shall not be released to Employee  pursuant to
the terms of the Escrow Agreement. If payment of such monies is not made or such
agreement is not entered into,  such  Unrestricted  Shares  shall,  at Comtech's
direction,  be sold by  Employee  to Comtech  for a purchase  price equal to the
purchase price per share provided in Section 2 hereof,  adjusted, as appropriate
for any subsequent stock-split, recapitalization or the like.

         (e) In the event of Employee's  termination of employment with CMDC for
any reason other than those  specified  in  Subsection  4(c) hereof  (including,
without  limitation,  any voluntary  termination of  employment)  all Restricted
Shares shall be sold by Employee to Comtech,  for the price and otherwise in the
manner provided in Subsection 4(d) hereof.

         5. Representations and Warranties of Employee

         Employee represents and warrants as follows:

         (a)  Assuming  that  Comtech  has  transferred  to  Employee  good  and
marketable  title to the Shares,  Employee has not taken any action or permitted
any action to occur,  nor will  employee take any action or permit any action to
occur,  that would  result in the Shares  becoming  subject to any claim,  lien,
pledge or encumbrance of any nature whatsoever.

                                       4





         (b)  Employee  has full legal power and capacity to execute and deliver
this  Agreement,  and such execution and delivery and  Employee's  acceptance of
employment with CMDC  contemporaneously  with the execution and delivery of this
Agreement are not in violation of any other agreement,  instrument or obligation
to which  Employee is a party,  including,  without  limitation,  any employment
agreement or non-competition agreement of any kind whatsoever.

         (c) This Agreement  constitutes the legal, valid and binding obligation
of Employee.

         (d)  Employee  has not  employed  any broker or finder or incurred  any
liability for any brokerage  fees or  commissions or finders' fees in connection
with this Agreement.

         (e) Employee is acquiring the Shares for  investment  purposes only and
not with a view to distribution,  and  acknowledges  that he has been advised by
his counsel, and understands, that the Shares have not been registered under the
Securities Act of 1933, as amended,  and under the  securities  laws, may not be
sold or transferred unless registered under such Act or pursuant to an exemption
from such  registration  and that a  restrictive  legend to that effect shall be
placed on the certificate(s)  representing the Shares. Employee has further been
advised by his counsel  with  respect to making an election  pursuant to Section
83(b) of the Internal  Revenue Code and has chosen,  or will choose,  whether to
make such election as he deems appropriate.

         6. Representations and Warranties of Comtech

         Comtech represents and warrants as follows:

         (a)  Comtech is a  corporation  duly  organized,  existing  and in good
standing under the laws of the State of Delaware with full power and legal right
to execute and deliver this Agreement and perform its obligations hereunder.

         (b) The  execution  and  delivery of this  Agreement by Comtech and the
performance by it of its obligations  hereunder have been duly authorized by all
necessary  corporate  action  and do not  violate  the terms of any  outstanding
agreements to which it is a party. This Agreement  constitutes the legal,  valid
and binding obligation of Comtech.

         7. Certain Employment Matters

         (a) The purchase of Shares  hereunder shall not preclude  Employee from
being eligible to participate in any other plans, programs or benefits otherwise
available to employees of Comtech or its subsidiaries. Nothing in this Agreement
shall  be   construed  to   constitute   or  be  evidence  of  an  agreement  or
understanding,  express  or  implied,  on the part of  Comtech or CMDC to employ
Employee for any specific period of time.

         (b) In  consideration  of his  employment  with  CMDC  and the sale and
issuance of the Shares to him pursuant to this  Agreement,  Employee  shall not,
during the period he is employed by CMDC and for one year  thereafter  following
Employee's  voluntary  termination  of is  employment  by CMDC,  in any  manner,
directly or indirectly, engage anywhere in the United States in any

                                       5


business which competes with the business in which CMDC or Comtech or any of its
other subsidiaries is engaged at any time during the period in which Employee is
employed  by CMDC,  and he shall  not,  directly  or  indirectly,  own,  manage,
operate, join, control or participate in the ownership, management, operation or
control of, or be employed by, or connected in any manner with any  corporation,
firm or business  that is so engaged;  provided,  however,  that nothing  herein
contained  shall  prohibit  Employee  from  owning  not  more  than  5%  of  the
outstanding stock of any publicly held corporation. If any restriction set forth
in this  Subsection  7(b) is  found  by a court  of  competent  jurisdiction  or
arbitrator to be unenforceable  because it extends for too long a period of time
or over too great a range of  activities  or in too broad a geographic  area, it
shall be interpreted  to extend only over the maximum  period of time,  range of
activities or geographic area as to which it may be enforceable.

         (c) Employee shall hold in a fiduciary capacity for the benefit of CMDC
and Comtech all confidential information, knowledge or data relating to CMDC and
Comtech  or any of its  other  subsidiaries,  and  their  respective  businesses
obtained  by  Employee  before or during the period in which he is  employed  by
CMDC.

         (d)  The  restrictions  contained  in  Subsections  (b) and (c) of this
Section 7 are necessary for the  protection of the business and goodwill of CMDC
and Comtech and are  considered  by Employee to be  reasonable  to such purpose.
Employee agrees that any breach of such  Subsections (b) and (c) will cause CMDC
and/or Comtech substantial and irreparable damage and therefore, in the event of
any such breach, in addition to such other remedies which may be available, CMDC
and/or Comtech shall have the right to seek specific  performance and injunctive
relief.

         8. Liability of Comtech

         The  liability  of  Comtech  under  this  Agreement  is  limited to the
obligations  expressly set forth herein and nothing  herein  contained  shall be
construed to impose any  liability on Comtech in favor of Employee  with respect
to any loss,  cost or expense  which  Employee may incur or suffer in connection
with or arising out of this Agreement, including, without limitation, Employee's
purchase of the Shares.

         9. Voting Concerning Certain Corporate Matters

         (a) Employee  agrees to have  counted for purposes of a quorum,  and to
vote, all Restricted Shares (whether such vote shall be by written consent or by
vote,  in  person  or, if  requested  by  Comtech,  by  proxy,  at a meeting  of
shareholders of Comtech) for the election to Comtech's Board of Directors of the
nominees from time to time designated by the Board of Directors of Comtech.

         (b) To facilitate, and not in limitation of, the agreement contained in
Subsection 9(a) hereof,  Employee irrevocably appoints the Chairman of the Board
and the Secretary of Comtech,  and their  respective  successors in office,  and
each of them, with full power of substitution,  as the lawful proxy for Employee
as to all Restricted  Shares,  to vote all  Restricted  Shares which Employee is
entitled  to vote,  for and in the name,  place and  stead of  Employee,  at any
annual,  special  or other  meeting of the  holders of shares of Comtech  Common
Stock and at any adjournment thereof, or

                                       6




pursuant to any  consent in lieu of a meeting,  for the  election  to  Comtech's
Board of  Directors  of the  nominees  designated  by the Board of  Directors of
Comtech.  The  foregoing  proxy is coupled  with an interest and  therefore  not
terminable by Employee without the consent of Comtech.

         10. Additional Restricted Shares.

         Employees  agrees that the term  "Restricted  Shares" shall include any
shares or other  securities  which he may receive or be entitled to receive as a
result of the ownership of the original  Restricted  Shares whether the same are
issued as a result of a share split, share dividend, recapitalization,  or other
subdivision or consolidation of shares effected without receipt of consideration
by Comtech or the  result of the merger or  consolidation  of Comtech or sale of
assets of Comtech.

         11. Binding Agreement

         This  Agreement  shall inure to the  benefit  of, and be binding  upon,
Comtech and its  successors  and assigns and  Employee  and his heirs,  personal
representatives, successors and assigns.

         12. Notices

         Any  notice,  request  or  other  communication  hereunder  shall be in
writing and shall be deemed to have been duly given if hand  delivered or mailed
by registered or certified mail, return receipt  requested,  addressed as herein
set forth,  or to such  other  address as may be  designated  by a notice  given
pursuant hereto,  which change of address notice shall be effective upon receipt
thereof.

         If to Comtech:

                 Comtech Telecommunications Corp.
                 105 Baylis Road
                 Melville, New York  11747

                 Attention:  Fred Kornberg, President

         Copy to:

                 Proskauer Rose LLP
                 1585 Broadway
                 New York, New York 10036

                 Attention:  Robert A. Cantone, Esq.

         If to Employee:

                 21312 Glendevon Ct.
                 Germantown, MD  20876

                                       7





         13. Survival.

         All  of  the  representations,  warranties,  agreements  and  covenants
contained  herein or made or deemed  to have  been  made  pursuant  hereto or in
connection with the transactions contemplated hereby shall survive the execution
and  delivery  hereof  and the  consummation  of the  transactions  contemplated
hereby.

         14. Governing Law

         This  Agreement  shall be governed by and construed in accordance  with
the laws of the State of New York.

         15. Counterparts

         This Agreement may be executed in counterparts,  each of which shall be
deemed an  original  and all of which,  taken  together,  shall  constitute  one
instrument.

         16. Expenses

         Employee and Comtech shall each bear all the expenses  incurred by them
or it in  connection  with  this  Agreement  and the  transactions  contemplated
hereby.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                                         8




         IN WITNESS WHEREOF,  Comtech and Employee have caused this Agreement to
be executed as of the date first above written.


                                   COMTECH TELECOMMUNICATIONS CORP.


                                   By:
                                      ---------------------------------------
                                              Authorized Signatory

                                   By:
                                      ---------------------------------------
                                                  Brent Taylor

                                                         9


              TIME ACCELERATED RESTRICTED STOCK PURCHASE AGREEMENT

         AGREEMENT dated  September 24, 1998 between Comtech  Telecommunications
Corp., a Delaware corporation ("Comtech"), and Joel Alper ("Employee").

         WHEREAS,  Employee is employed by  Comtech's  wholly-owned  subsidiary,
Comtech Mobile Datacom Corporation ("CMDC"),  and Comtech and Employee desire to
(a) provide  additional  incentives  to Employee in connection  with  Employee's
responsibilities  for the management and growth of the business of CMDC, and (b)
more closely align  Employee's  interests with the interests of  stockholders of
Comtech,  through,  in relation  to both  objectives,  the sale and  issuance to
Employee of restricted shares of Common Stock of Comtech.

         NOW, THEREFORE, Comtech and Employee agree as follows:

         1. Definitions

         (a)  "Comtech"  means  Comtech  Telecommunications  Corp.,  a  Delaware
corporation.

         (b)  "Escrow  Agent"  means the  Escrow  Agent as defined in the Escrow
Agreement in the form annexed hereto as Exhibit A.

         (c) "Cumulative  CMDC Pre-Tax  Profits" means CMDC's  aggregate  income
before income taxes minus CMDC's  aggregate  losses in the period from inception
of operations of CMDC to the end of the relevant fiscal year.  Determinations of
such amounts  shall be made in accordance  with  generally  accepted  accounting
principles, with the exception that no effect shall be given to

              (i)  interest or like charges or accruals  ("Capital  Charges") in
                   respect of Comtech  cash  advances to CMDC that are less than
                   $1.5  million  plus the amount of  dividends  paid by CMDC to
                   Comtech during the relevant fiscal year;

              (ii) Capital  Charges in excess of 1/2% above the average  rate of
                   interest  then  charged  to  Comtech  for all  borrowings  by
                   Comtech,  on Comtech  cash  advances to CMDC  exceeding  $1.5
                   million at any time  outstanding plus the amount of dividends
                   paid by CMDC to Comtech during the relevant fiscal year;

              (iii)general or  administrative  expenses  of  Comtech,  including
                   charges for  management  or  corporate  services  provided by
                   Comtech to CMDC; or


              (iv) the sale of shares of Comtech  Common  Stock to Employee  and
                   other  employees of CMDC, or the repurchase of same.

          (d) "Net Cash Borrowings" means the cumulative amount of cash advances
to CMDC by Comtech.

         (e) "Net Cash Flow" means total cash refunds by CMDC to Comtech, net of
cash advances by Comtech to CMDC.

         (f)  "Restricted  Shares" means the Shares subject to the  restrictions
against  transfer  provided  in  Section 3 hereof and which are  required  to be
resold to Comtech under certain circumstances as provided in Section 3 hereof.

         (g)  "Unrestricted  Shares"  means Shares as to which all  restrictions
against transfer and the obligation to resell to Comtech have lapsed.

         (h) "Shares" shall have the meaning provided in Section 2 hereof.

         2. Sale and Purchase of Shares

         On the terms,  and  subject  to the  conditions  hereinafter  provided,
simultaneously with the execution and delivery of this Agreement, (i) Comtech is
selling and issuing to Employee, and Employee is purchasing from Comtech, 35,000
shares of Common  Stock,  par value $.10 per share,  of Comtech (the  "Shares");
(ii) Employee is paying to Comtech by certified or bank cashier's  check a total
purchase  price for the  Shares  of $3,500  (i.e.,  $.10 per  share);  and (iii)
Employee  is  depositing  the Shares  with the Escrow  Agent,  to be held by the
Escrow  Agent  pursuant  and subject to the terms of an Escrow  Agreement in the
form annexed hereto as Exhibit A.

         3. Restrictions

         (a) The Shares shall not be  transferred  until such time as they shall
become "Unrestricted Shares" pursuant to Section 4 hereof (the Shares subject to
such restriction being hereinafter referred to as "Restricted  Shares"). As used
in this  Agreement,  "transfer"  shall include,  without  limitation,  any sale,
assignment, gift, pledge, hypothecation,  bequest, devise, encumbrance, or other
disposition, whether voluntary or by operation of law. Any attempted transfer of
Restricted Shares (other than to Comtech pursuant to the provisions of Section 4
of this  Agreement)  shall be null and void and Comtech shall not give effect on
its records to any such attempted transfer.

         (b) Employee authorizes Comtech and its transfer agents not to transfer
any certificates of Comtech Common Stock on its books and records transferred in
violation of this Agreement, and further agrees that any such purported transfer
shall be void and of no effect.

          (c) An  original  of this  Agreement  shall  be kept in the  files  of
Comtech  at its  principal  office  and  reference  to this  Agreement  shall be
endorsed on all stock certificates subject to this

                                                         2


Agreement,  now or hereafter  issued, by writing or stamping thereon a legend in
substantially the following form:

         "Sale,    assignment,    gift,   bequest,   devise,   pledge,
         hypothecation, encumbrance or other disposition of the shares
         represented by this Certificate is restricted by the terms of
         a Restricted  Stock  Agreement,  dated  September __, 1998, a
         copy of which, and any amendments thereto, may be examined at
         the principal office of Comtech Telecommunications Corp."

         (d)  Employee  shall  possess all rights as a  stockholder  (including,
without  limitation,  voting rights,  rights to dividends,  if any, declared and
rights on liquidation) except such as are expressly restricted by the provisions
of this Agreement.

         4. Lapse of Restrictions; Forfeiture of Shares

         (a) One-sixth of the Shares shall become Unrestricted  Shares,  subject
to satisfying  the tax  withholding  requirements  contained in Subsection  4(d)
hereof, upon the first anniversary of the date hereof.

         (b) Subject to satisfying the tax withholding requirements contained in
Subsection  4(d) hereof,  the remaining  five-sixths  of the Shares shall become
Unrestricted  Shares on the tenth  anniversary  of the date hereof,  except that
such Shares  shall become  Unrestricted  Shares on an  accelerated  basis in the
one-sixth  increments set forth in the following  schedule after the Performance
Criteria set forth therein are achieved:

                                                      Number of Shares
                                                        that become
               Performance Criteria                 Unrestricted Shares
               --------------------                 --------------------

o     Fiscal year-end cumulative CMDC net sales       One-sixth (1/6)
      of $3,000,000 and Net Cash Borrowings at      of Shares purchased
      that time of less than $1,000,000

o     Fiscal year-end Cumulative CMDC Pre-Tax         One-sixth (1/6)
      Profits of $500,000 and Net Cash              of Shares purchased
      Borrowings at such time of less than
      $500,000

o     Fiscal year-end Cumulative CMDC Pre-Tax         One-sixth (1/6)
      Profits of $2,000,000 and Net Cash            of Shares purchased
      Borrowings at such time of less than
      $100,000

                                       3

                                                      Number of Shares
                                                        that become
               Performance Criteria                 Unrestricted Shares
               --------------------                 --------------------

o     Fiscal year-end Cumulative CMDC Pre-Tax         One-sixth (1/6)
      Profits of $3,000,000 and fiscal year Net     of Shares purchased
      Cash Flow of $1,500,000 or more

o     Fiscal year-end Cumulative CMDC Pre-Tax         One-sixth (1/6)
      Profits of $7,000,000 and fiscal year Net     of Shares purchased
      Cash Flow of $2,500,000 or more


         (c)  Notwithstanding   anything  to  the  contrary  contained  in  this
Agreement,  but subject to satisfying the tax withholding requirements contained
in Subsection 4(d) hereof,  (i) all Restricted Shares shall become  Unrestricted
Shares upon  termination  of  Employee's  employment  with CMDC by reason of his
death,  total and permanent  disability  (as  determined in accordance  with the
policies and practices of Comtech),  normal  retirement  (at or after age 65 or,
with the consent of Comtech,  before age 65), or early  retirement  at Comtech's
request; and (ii) upon discharge of Employee by CMDC other than for cause (which
for this purpose shall mean Employee's willful misconduct,  dereliction of duty,
or conviction for a crime involving moral turpitude).

          (d) If, at the time any Shares  become  Unrestricted  Shares,  Comtech
determines  that it has  withheld an amount  which is less than the  withholding
that may be required  pursuant to the Internal  Revenue Code or other applicable
law,  Employee shall forthwith pay to Comtech the amount of monies  necessary to
satisfy such withholding or equivalent  requirements.  Until the payment of such
monies or,  alternatively the execution and delivery by Employee of an agreement
satisfactory to Comtech in its sole discretion providing for the payment of such
monies,  the Unrestricted  Shares shall not be released to Employee  pursuant to
the terms of the Escrow Agreement. If payment of such monies is not made or such
agreement is not entered into,  such  Unrestricted  Shares  shall,  at Comtech's
direction,  be sold by  Employee  to Comtech  for a purchase  price equal to the
purchase price per share provided in Section 2 hereof,  adjusted, as appropriate
for any subsequent stock-split, recapitalization or the like.

         (e) In the event of Employee's  termination of employment with CMDC for
any reason other than those  specified  in  Subsection  4(c) hereof  (including,
without  limitation,  any voluntary  termination of  employment)  all Restricted
Shares shall be sold by Employee to Comtech,  for the price and otherwise in the
manner provided in Subsection 4(d) hereof.

         5. Representations and Warranties of Employee

         Employee represents and warrants as follows:

         (a)  Assuming  that  Comtech  has  transferred  to  Employee  good  and
marketable  title to the Shares,  Employee has not taken any action or permitted
any action to occur,  nor will  employee

                                       4


take any action or permit any action to occur,  that would  result in the Shares
becoming  subject  to any  claim,  lien,  pledge or  encumbrance  of any  nature
whatsoever.

         (b)  Employee  has full legal power and capacity to execute and deliver
this  Agreement,  and such execution and delivery and  Employee's  acceptance of
employment with CMDC  contemporaneously  with the execution and delivery of this
Agreement are not in violation of any other agreement,  instrument or obligation
to which  Employee is a party,  including,  without  limitation,  any employment
agreement or non-competition agreement of any kind whatsoever.

         (c) This Agreement  constitutes the legal, valid and binding obligation
of Employee.

         (d)  Employee  has not  employed  any broker or finder or incurred  any
liability for any brokerage  fees or  commissions or finders' fees in connection
with this Agreement.

         (e) Employee is acquiring the Shares for  investment  purposes only and
not with a view to distribution,  and  acknowledges  that he has been advised by
his counsel, and understands, that the Shares have not been registered under the
Securities Act of 1933, as amended,  and under the  securities  laws, may not be
sold or transferred unless registered under such Act or pursuant to an exemption
from such  registration  and that a  restrictive  legend to that effect shall be
placed on the certificate(s)  representing the Shares. Employee has further been
advised by his counsel  with  respect to making an election  pursuant to Section
83(b) of the Internal  Revenue Code and has chosen,  or will choose,  whether to
make such election as he deems appropriate.

         6. Representations and Warranties of Comtech

         Comtech represents and warrants as follows:

         (a)  Comtech is a  corporation  duly  organized,  existing  and in good
standing under the laws of the State of Delaware with full power and legal right
to execute and deliver this Agreement and perform its obligations hereunder.

         (b) The  execution  and  delivery of this  Agreement by Comtech and the
performance by it of its obligations  hereunder have been duly authorized by all
necessary  corporate  action  and do not  violate  the terms of any  outstanding
agreements to which it is a party. This Agreement  constitutes the legal,  valid
and binding obligation of Comtech.

         7. Certain Employment Matters

         (a) The purchase of Shares  hereunder shall not preclude  Employee from
being eligible to participate in any other plans, programs or benefits otherwise
available to employees of Comtech or its subsidiaries. Nothing in this Agreement
shall  be   construed  to   constitute   or  be  evidence  of  an  agreement  or
understanding,  express  or  implied,  on the part of  Comtech or CMDC to employ
Employee for any specific period of time.


                                       5



          (b) In  consideration  of his  employment  with  CMDC and the sale and
issuance of the Shares to him pursuant to this  Agreement,  Employee  shall not,
during the period he is employed by CMDC and for one year  thereafter  following
Employee's  voluntary  termination  of his  employment  by CMDC,  in any manner,
directly or  indirectly,  engage  anywhere in the United  States in any business
which  competes  with the  business in which CMDC or Comtech or any of its other
subsidiaries  is engaged at any time  during  the  period in which  Employee  is
employed  by CMDC,  and he shall  not,  directly  or  indirectly,  own,  manage,
operate, join, control or participate in the ownership, management, operation or
control of, or be employed by, or connected in any manner with any  corporation,
firm or business  that is so engaged;  provided,  however,  that nothing  herein
contained  shall  prohibit  Employee  from  owning  not  more  than  5%  of  the
outstanding stock of any publicly held corporation. If any restriction set forth
in this  Subsection  7(b) is  found  by a court  of  competent  jurisdiction  or
arbitrator to be unenforceable  because it extends for too long a period of time
or over too great a range of  activities  or in too broad a geographic  area, it
shall be interpreted  to extend only over the maximum  period of time,  range of
activities or geographic area as to which it may be enforceable.

         (c) Employee shall hold in a fiduciary capacity for the benefit of CMDC
and Comtech all confidential information, knowledge or data relating to CMDC and
Comtech  or any of its  other  subsidiaries,  and  their  respective  businesses
obtained  by  Employee  before or during the period in which he is  employed  by
CMDC.

         (d)  The  restrictions  contained  in  Subsections  (b) and (c) of this
Section 7 are necessary for the  protection of the business and goodwill of CMDC
and Comtech and are  considered  by Employee to be  reasonable  to such purpose.
Employee agrees that any breach of such  Subsections (b) and (c) will cause CMDC
and/or Comtech substantial and irreparable damage and therefore, in the event of
any such breach, in addition to such other remedies which may be available, CMDC
and/or Comtech shall have the right to seek specific  performance and injunctive
relief.

         8. Liability of Comtech

         The  liability  of  Comtech  under  this  Agreement  is  limited to the
obligations  expressly set forth herein and nothing  herein  contained  shall be
construed to impose any  liability on Comtech in favor of Employee  with respect
to any loss,  cost or expense  which  Employee may incur or suffer in connection
with or arising out of this Agreement, including, without limitation, Employee's
purchase of the Shares.

         9. Voting Concerning Certain Corporate Matters

         (a) Employee  agrees to have  counted for purposes of a quorum,  and to
vote, all Restricted Shares (whether such vote shall be by written consent or by
vote,  in  person  or, if  requested  by  Comtech,  by  proxy,  at a meeting  of
shareholders of Comtech) for the election to Comtech's Board of Directors of the
nominees from time to time designated by the Board of Directors of Comtech.

         (b) To facilitate, and not in limitation of, the agreement contained in
Subsection 9(a) hereof,  Employee irrevocably appoints the Chairman of the Board
and the Secretary of Comtech, and
                                       6

their  respective  successors  in office,  and each of them,  with full power of
substitution,  as the lawful proxy for Employee as to all Restricted  Shares, to
vote all  Restricted  Shares which  Employee is entitled to vote, for and in the
name,  place and stead of Employee,  at any annual,  special or other meeting of
the holders of shares of Comtech Common Stock and at any adjournment thereof, or
pursuant to any  consent in lieu of a meeting,  for the  election  to  Comtech's
Board of  Directors  of the  nominees  designated  by the Board of  Directors of
Comtech.  The  foregoing  proxy is coupled  with an interest and  therefore  not
terminable by Employee without the consent of Comtech.

         10. Additional Restricted Shares.

         Employees  agrees that the term  "Restricted  Shares" shall include any
shares or other  securities  which he may receive or be entitled to receive as a
result of the ownership of the original  Restricted  Shares whether the same are
issued as a result of a share split, share dividend, recapitalization,  or other
subdivision or consolidation of shares effected without receipt of consideration
by Comtech or the  result of the merger or  consolidation  of Comtech or sale of
assets of Comtech.

         11. Binding Agreement

         This  Agreement  shall inure to the  benefit  of, and be binding  upon,
Comtech and its  successors  and assigns and  Employee  and his heirs,  personal
representatives, successors and assigns.

         12. Notices

         Any  notice,  request  or  other  communication  hereunder  shall be in
writing and shall be deemed to have been duly given if hand  delivered or mailed
by registered or certified mail, return receipt  requested,  addressed as herein
set forth,  or to such  other  address as may be  designated  by a notice  given
pursuant hereto,  which change of address notice shall be effective upon receipt
thereof.

         If to Comtech:

               Comtech Telecommunications Corp.
               105 Baylis Road
               Melville, New York  11747

               Attention:  Fred Kornberg, President

         Copy to:

               Proskauer Rose LLP
               1585 Broadway
               New York, New York 10036

               Attention:  Robert A. Cantone, Esq.

                                       7

         If to Employee:

                22 Sandalfoot Court
                Potomac, MD  20854

         13. Survival.

         All  of  the  representations,  warranties,  agreements  and  covenants
contained  herein or made or deemed  to have  been  made  pursuant  hereto or in
connection with the transactions contemplated hereby shall survive the execution
and  delivery  hereof  and the  consummation  of the  transactions  contemplated
hereby.

         14. Governing Law

         This  Agreement  shall be governed by and construed in accordance  with
the laws of the State of New York.

         15. Counterparts

         This Agreement may be executed in counterparts,  each of which shall be
deemed an  original  and all of which,  taken  together,  shall  constitute  one
instrument.

         16. Expenses

         Employee and Comtech shall each bear all the expenses  incurred by them
or it in  connection  with  this  Agreement  and the  transactions  contemplated
hereby.

                  REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       8



         IN WITNESS WHEREOF,  Comtech and Employee have caused this Agreement to
be executed as of the date first above written.

                                     COMTECH TELECOMMUNICATIONS CORP.


                                      By:
                                         -----------------------------------
                                           Authorized Signatory


                                         -----------------------------------
                                           Joel Alper

                                       9