EXHIBIT 10.17

                      NON-RECOURSE SECURED PROMISSORY NOTE


     FOR VALUE RECEIVED,  Norman M. Phipps (the "Executive")  hereby promises to
pay to the order of  LogiMetrics,  Inc.  (the  "Company"),  at its offices at 50
Orville Drive,  Bohemia,  New York, or at such other location as the Company may
designate from time to time, the sum of $459,000, without interest, as set forth
below. If the Executive fails to pay any amount  hereunder when due,  whether at
maturity,  upon  acceleration or otherwise,  and such failure continues for more
than 30 days,  interest shall thereafter accrue on any overdue amounts at a rate
of 8% percent per annum, compounded annually, until paid in full. Interest shall
be  calculated  on the basis of a  365-day  year for the  actual  number of days
elapsed.

     Section 1. Prepayment.  The Executive shall have the right to prepay all or
part of the outstanding  principal amount of this Note at any time and from time
to time  without  penalty or  premium.  In the event that the  Executive  sells,
transfers or otherwise  disposes of some or all of the Shares (as defined in the
Pledge Agreement referred to below), whether on or prior to the maturity of this
Note, the Executive shall promptly repay this Note in an amount equal to the net
proceeds, if any, received by the Executive from such disposition.

     Section 2.  Maturity.  This Note shall mature and all amounts due hereunder
shall become  immediately due and payable,  without demand and without notice to
the Executive, in the event that (a) the Executive sells, transfers or otherwise
disposes  of all Shares  then owned by him (other  than  pursuant to a Change in
Control Event, as defined below), (b) the Executive's  employment by the Company
is terminated for any reason, other than a Without Cause Termination (as defined
below),  (c) the Executive (i) becomes  insolvent,  (ii) makes an assignment for
the  benefit of his  creditors  generally,  or (iii)  files a  petition  seeking
protection under the United States Bankruptcy Code or seeking the appointment of
a receiver,  trustee or custodian for the Executive or a substantial  portion of
his assets, or (d) any other person or entity (i) files an involuntary  petition
under the United States  Bankruptcy Code with respect to the Executive,  or (ii)
commences an action seeking the appointment of a receiver,  trustee or custodian
for the Executive or a substantial  portion of his assets,  and such petition or
action  remains  undismissed  and unstayed for more than sixty (60)  consecutive
days; provided,  however,  that if the Executive's  employment is terminated for
any reason (other than a Without Cause  Termination or a Termination for Cause),
amounts due hereunder shall be payable in sixty (60) equal monthly installments,
without interest,  on the first business day of each month,  commencing with the
first month immediately following the effective date of such termination.

     As used herein,  (i) "Without Cause Termination" means a termination of the
Executive's  employment by the Company other than due to "Permanent  Disability"
(as defined below) or retirement  and other than a  "Termination  for Cause" (as
defined below), (ii) "Permanent  Disability" means permanently disabled so as to
qualify for full 

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benefits  under  the  Company's   then-existing   disability  insurance  policy;
provided,  however, that if the Company does not maintain any such policy on the
date of  determination,  "Permanent  Disability" shall mean the inability of the
Executive  to work for a period of six full  calendar  months  during  any eight
consecutive  calendar  months due to  illness or injury of a physical  or mental
nature,  supported by the completion by the Executive's attending physician of a
medical  certification  form outlining the  disability and treatment,  and (iii)
"Termination  for Cause" means,  to the maximum  extent  permitted by applicable
law, a termination  of the  Executive's  employment  by the Company  because the
Executive has (a) breached or failed to perform his duties under  applicable law
and  such  breach  or  failure  to  perform  constitutes  self-dealing,  willful
misconduct  or  recklessness,   (b)  committed  an  act  of  dishonesty  in  the
performance of his duties or engaged in any conduct  detrimental to the business
or reputation of the Company or any of its subsidiaries, (c) been convicted of a
felony or  misdemeanor  involving  moral  turpitude,  (d)  breached or failed to
perform his  obligations and duties under any employment  agreement  between the
Executive  and the Company or any of its  subsidiaries,  which breach or failure
the Executive  shall fail to remedy within 30 days after written demand from the
Company or the  subsidiary  party thereto,  or (e) violated the  representations
made by him in any such employment  agreement or any of the covenants  contained
therein.

     Section 3. Change in Control.  Notwithstanding the provisions of Sections 1
and 2 hereof,  all principal and interest,  if any, due under this Note shall be
forgiven, and the Executive shall have no further obligation hereunder, upon the
occurrence of a Change of Control Event (as defined below);  provided,  however,
that the  Executive  continues  to be  employed  by the  Company  as of the date
immediately  preceding the effective date of a Change in Control Event.  As used
herein,  a  "Change  in  Control  Event"  means  the  occurrence  of  any of the
following:

          (a) any person,  firm or  corporation  (other  than  Charles S. Brand,
members of his immediate  family,  or any trust or other entity  established for
the  benefit of Mr.  Brand  and/or  members of his  immediate  family)  acquires
directly or indirectly the beneficial  ownership (as defined in Section 13(d) of
the Securities  Exchange Act of 1934, as amended) of any voting  security of the
Company and,  immediately  after such  acquisition,  the acquirer has beneficial
ownership  of voting  securities  representing  50% or more of the total  voting
power of all the then-outstanding voting securities of the Company;

          (b) the individuals who (i) as of the date of this Note constitute the
Board of Directors (the "Original  Directors"),  (ii)  thereafter are elected to
the Board of  Directors  and whose  election or  nomination  for election to the
Board  of  Directors  was  approved  by a vote of at least  2/3 of the  Original
Directors then still in office (such Directors being called "Additional Original
Directors"),  or (iii) are elected to the Board of Directors and whose  election
or  nomination  for election to the Board of Directors was approved by a vote of
at least 2/3 of the Original  Directors and Additional  Original  Directors then
still in office, cease for any reason to constitute a majority of the members of
the Board of Directors;

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          (c)  the   stockholders   of  the  Company  shall  approve  a  merger,
consolidation, recapitalization, or reorganization of the Company or the Company
shall consummate any such  transaction if stockholder  approval is not sought or
obtained,  other  than any such  transaction  which  would  result in holders of
outstanding   voting  securities  of  the  Company   immediately  prior  to  the
transaction  having  beneficial  ownership  of at least 50% of the total  voting
power represented by the voting  securities of the surviving entity  outstanding
immediately  after  such  transaction,  with  the  voting  power  of  each  such
continuing  holder relative to such other  continuing  holders being not altered
substantially in the transaction; or

          (d) the  stockholders  of the Company shall approve a plan of complete
liquidation  of the Company or an agreement for the sale or  disposition  by the
Company of all or a substantial  portion of the Company's  assets (i.e.,  50% or
more in value of the total assets of the Company).

     Section  4.  Security.  This  Note is the Note  referred  to in the  Pledge
Agreement,  dated the date hereof,  between the Executive and the Company and is
secured by the Shares and the other  Collateral  described  therein.  The Pledge
Agreement  grants the Company certain rights with respect to the Collateral upon
certain defaults specified therein.

     Section 5.  Non-Recourse  Nature of Obligation  to Pay. The Company's  sole
recourse  for the payment of amounts due under this Note shall be limited to the
Collateral  securing this Note.  THE COMPANY SHALL NOT HAVE THE RIGHT TO ENFORCE
THIS NOTE  AGAINST  THE  EXECUTIVE  OR ANY OF THE  EXECUTIVE'S  OTHER  ASSETS OR
PROPERTY.

     Section  6.  Waivers.  No delay on the part of the  holder  of this Note in
exercising  any power or right  hereunder  shall operate as a waiver of any such
power or right;  nor shall any single or partial  exercise of any power or right
preclude any other or further  exercise of such power or right,  or the exercise
of any other power or right,  and no waiver  whatsoever shall be valid unless in
writing,  signed  by the  holder  of this  Note,  and  then  only to the  extent
expressly  set forth  therein.  The  Executive  waives  presentment,  demand for
payment,  diligence,  notice of  dishonor  and all other  notices  or demands in
connection with the delivery, acceptance, performance, default or indorsement of
this Note.

     Section  7.  Governing  Law;  Consent to  Jurisdiction.  This Note shall be
governed by, and  construed  in  accordance  with,  the laws of the State of New
York, without reference to the choice of law provisions  thereof.  The Executive
hereby  consents and submits to the  exclusive  jurisdiction  of the federal and
state courts located in the State of New York having subject matter jurisdiction
in connection  with any and all disputes  arising out of or in  connection  with
this Note. The Executive  hereby  consents and agrees that service of process by
the holder shall be deemed validly and properly  effected  against the Executive
upon the mailing of a copy of such process by certified mail,  postage  

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prepaid,  to the Executive at his address as it appears in the personnel records
of the Company.

Witness:



/s/ Stephanie Trocchia                               /s/ Norman M. Phipps
___________________________                          __________________________
Name:    Stephanie Trocchia                          Name: Norman M. Phipps


Dated:  July 22, 1997