Document:

EXHIBIT 10.17

                           CHANGE IN CONTROL AGREEMENT

            AGREEMENT, made as of this 15th day of May, 2000, by and between
Microwave Power Devices, Inc., a Delaware corporation (the "Company") and Thomas
V. Gilboy, the Company's Vice President and Chief Financial Officer (the
"Executive").

                              W I T N E S S E T H:
                              - - - - - - - - - -

            WHEREAS, the Company believes that the establishment and maintenance
of a sound and vital management of the Company is essential to the protection
and enhancement of the interests of the Company and its stockholders;

            WHEREAS, the Company also recognizes that the possibility of a
Change in Control of the Company (as defined in Section 1 hereof), with the
attendant uncertainties and risks, might result in the departure or distraction
of key employees of the Company to the detriment of the Company; and

            WHEREAS, the Company has determined that it is appropriate to take
steps to induce key employees to remain with the Company, and to reinforce and
encourage their continued attention and dedication, when faced with the
possibility of a Change in Control of the Company.

            NOW, THEREFORE, in consideration of the premises and mutual
covenants herein contained, the parties hereto hereby agree as follows:

            1. Change in Control Definition. A Change in Control shall mean the
occurrence of any of the following: (i) any person (as defined in Section
3(a)(9) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")
and as used in Sections 13(d) and 14(d) thereof), excluding the Company, any
Affiliates (as hereinafter defined) of the Company, or any employee benefit plan
sponsored or maintained by the Company or its Affiliates (including any trustee
of any such plan acting in his capacity as trustee), becoming the "beneficial
owner" (as

<PAGE>

defined in Rule 13d-3 under the Exchange Act) of securities of the Company
representing more than fifty percent (50%) of the total combined voting power of
the Company's then outstanding securities; (ii) the merger, consolidation or
other business combination of the Company (a "Transaction"), other than a
Transaction involving only the Company's Affiliates or a Transaction immediately
following which the stockholders of the Company immediately prior to the
Transaction continue to have a majority of the voting power in the resulting
entity; (iii) during any period of three (3) consecutive years beginning on or
after the date hereof, the persons who were members of the Board of Directors of
the Company (the "Board") immediately before the beginning of such period (the
"Incumbent Directors") ceasing (for any reason other than death) to constitute
at least a majority of the Board or the board of directors of any successor to
the Company, provided that, any director who was not a director as of the date
hereof shall be deemed to be an Incumbent Director if such director was elected
to the board of directors by, or on the recommendation of or with the approval
of, at least two-thirds of the directors who then qualified as Incumbent
Directors either actually or by prior operation of the foregoing unless such
election, recommendation or approval occurs as a result of an actual or
threatened election contest (as such terms are used in Rule 14a-11 of Regulation
14A promulgated under the Exchange Act or any successor provision) or other
actual or threatened solicitation of proxies or contests by or on behalf of a
person other than a member of the Board; or (iv) the approval by the
stockholders of the Company of any plan of complete liquidation of the Company
or an agreement for the sale of all or substantially all of the Company's
assets, other than the sale of all or substantially all of the assets of the
Company to any of the Company's Affiliates. Only one Change in Control may occur
under this Agreement. For purposes of this Agreement, the term "Affiliates"
shall have the same meaning as set forth under the definition of "affiliates" in
Rule 405 of the Securities Act of 1933, as amended.

            2. Term. This Agreement shall commence on the date hereof and shall
expire on the earlier of (i) three (3) years from the date hereof, or (ii) the
date of the death of the Executive, or (iii) the termination of the Executive's
employment with the Company (for any reason) prior to a Change of Control.

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<PAGE>

            3. Effect of a Change in Control. If a Change in Control occurs
simultaneous with or prior to the expiration of this Agreement pursuant to
Section 2 hereof and within six (6) months after a Change of Control the
Executive's employment with the Company is terminated either by the Executive
for Good Reason (as hereinafter defined) or by the Company without cause, the
Executive shall be entitled to the amounts and benefits provided under Section 4
hereof. For purposes of this Agreement, "Good Reason" shall mean the occurrence
of any of the following events without the Executive's express prior written
consent: (A) any diminution in the Executive's title or a dimunition in
Executive's duties, functions, responsibilities or authority has occurred; (B) a
reduction in the Executive's annual base salary, annual potential bonus relative
to the prior year's potential bonus or eligibility for or participation in
benefit plans; (C) a relocation of the Executive's principal business location
to an area outside a forty (40) mile radius of the Executive's current principal
business location or requirement to travel away from his home or office
significantly more often than was customary in the past; (D) an elimination of
all or substantially all of the Company's corporate functions at the Company's
current principal business location; or (E) a failure of any successor or assign
(whether direct or indirect, by purchase, merger, consolidation or otherwise) of
the Company to assume in writing the obligations hereunder.

            4. Payments upon a Change in Control. If pursuant to Section 3
above, the Executive is entitled to amounts and benefits under this Section 4,
the Company shall pay or provide, as the case may be, the following items:

            (a) immediately following his termination of employment with the
Company, the Company shall pay to the Executive an amount equal to two times the
sum of (i) the Executive's base salary (as of the date of termination of
employment) plus (ii) the Executive's annual targeted bonus for the year in
which the termination of employment occurred pursuant to the terms of that
certain Executive Incentive Bonus Plan of the Company (as such plan may be
modified from time to time). Such amount shall be paid to the Executive by the
Company in 104 equal weekly installments.

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<PAGE>

            (b) within five (5) business days (or at such earlier time as
required by applicable law) following his termination of employment with the
Company, the Company shall pay to the Executive in a lump sum: (i) any earned
but unpaid base salary, (ii) any earned but unpaid bonus for the year preceeding
the year in which termination of employment occurs, (iii) accrued but unused
vacation time as of the date of termination, and (iv) incurred but unreimbursed
business expenses for the period prior to termination.

            (c) for a period of twelve (12) months commencing on the date of the
Change of Control, subject to the Executive's continued copayment of premiums
which shall not exceed the level of copayments prior to such Change of Control,
the Company shall continue to pay the premiums to provide health benefits and
coverage for the Executive and his dependents under the Company's health plans
in effect prior to such Change of Control which cover senior executives. The
Company's obligation to pay premiums hereunder shall cease upon the Executive's
employment with any employer (other than due to self-employment) following a
Change of Control. Upon the expiration of such twelve (12) month period, the
Company shall offer COBRA continuation health coverage to the Executive and his
dependents in accordance with applicable law.

            5. No Duty to Mitigate/Set-off; Severance. If pursuant to Section 4
hereof the Executive is entitled to payments, the Executive will not be required
to seek other employment or to attempt in any way to reduce any amounts payable
to the Executive by the Company pursuant to this Agreement. Further, the amounts
and benefits provided for in this Agreement shall not be reduced by any
compensation earned by the Executive or benefits provided to the Executive as
the result of employment by another employer or otherwise. Notwithstanding
anything herein to the contrary, if pursuant to Section 4 hereof the Executive
is entitled to payment, all of such payments shall be in lieu of any other
severance payments to which Executive may be entitled pursuant to any severance
plan of the Company or otherwise.

            6. Successors; Binding Agreement. In addition to any obligations
imposed by law upon any successor to the Company, the Company will require any
successor (whether direct

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<PAGE>

or indirect, by purchase, merger, consolidation or otherwise) to all or
substantially all of the business and/or assets of the Company to expressly
assume and agree in writing to perform this Agreement in the same manner and to
the same extent that the Company would be required to perform it. This Agreement
shall inure to the benefit of and be enforceable by the Executive's personal or
legal representatives, executors, administrators, successors, heirs,
distributees, devisees and legatees. If the Executive shall die while any amount
would still be payable to the Executive hereunder if the Executive had continued
to live, all such amounts, unless otherwise provided herein, shall be paid in
accordance with the terms of this Agreement to the executors, personal
representatives or administrators of the Executive's estate. This Agreement is
personal to the Executive and neither this Agreement or any rights hereunder may
be assigned by the Executive.

            7. Miscellaneous. No provisions of this Agreement may be modified,
waived or discharged unless such waiver, modification or discharge is agreed to
in writing and signed by the Executive and such officer as may be specifically
designated by the Board. No waiver by either party hereto at any time of any
breach by the other party hereto of, or compliance with, any condition or
provision shall be deemed a waiver of similar or dissimilar provisions or
conditions at the same or at any prior or subsequent time. This Agreement
constitutes the entire Agreement between the parties hereto pertaining to the
subject matter hereof. No agreements or representations, oral or otherwise,
express or implied, with respect to the subject matter hereof have been made by
either party which are not expressly set forth in this Agreement. All references
to any law shall be deemed also to refer to any successor provisions to such
laws. This Agreement may be executed in several counterparts, each of which
shall be deemed to be an original but all of which together will constitute one
and the same instrument. If any provisions of this Agreement shall be declared
to be invalid or unenforceable, in whole or in part, such invalidity or
unenforceability shall not affect the remaining provisions hereof which shall
remain in full force and effect.

            8. Notices. All notices under this Agreement shall be given in
writing and shall be either delivered personally or sent by certified or
registered mail, return receipt requested, addressed to the other party at the
appropriate address first set forth above, or to such other

                                       5
<PAGE>

address as such party shall designate by written notice as aforesaid. Notices
shall be deemed given when received or two (2) days after mailing, whichever is
earlier.

            9. Non-Exclusivity of Rights. Nothing in this Agreement shall
prevent or limit the Executive's continuing or future participation in any
benefit, bonus, incentive, equity or other plan or program provided by the
Company and for which the Executive may qualify and the payments hereunder shall
be in addition to, not in lieu of, any payments under any such plan or program
of the Company. Amounts that are vested benefits or which the Executive is
otherwise entitled to receive under any plan or program of the Company, at or
subsequent to the date of termination shall be payable in accordance with such
plan or program, except as otherwise specifically provided herein.

            10. Not an Agreement of Employment. This is not an agreement
assuring employment and, subject to any other agreement between the Executive
and the Company, the Company reserves the right to terminate the Executive's
employment at any time with or without cause.

            11. Governing Law. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York, without
reference to rules relating to conflicts of law.

            IN WITNESS WHEREOF, this Agreement has been executed as of the day
and year first above written.

                                        MICROWAVE POWER DEVICES, INC.

                                        By: /s/ A. Weber
                                            ------------------------------------
                                            Name: A. Weber
                                            Title: CEO

                                            /s/ Thomas V. Gilboy
                                            ------------------------------------
                                            Executive

                                       6EXHIBIT 10.18

                           WAIVER AND AMENDMENT NO. 4

                                       TO

                           LOAN AND SECURITY AGREEMENT

      THIS WAIVER AND AMENDMENT NO. 4 ("Amendment") is entered into as of August
8, 2000, by and between MPD TECHNOLOGIES, INC., a New York corporation
("Borrower") having its principal place of business at 49 Wireless Boulevard,
Hauppauge, New York and IBJ WHITEHALL BUSINESS CREDIT CORPORATION ("IBJ") having
its principal place of business at One State Street, New York, New York and each
of the other financial institutions named in or which hereafter become a party
to the Loan Agreement (as defined below) (IBJ and such other financial
institutions, the "Lenders") and IBJ as agent for the Lenders (IBJ in such
capacity, the "Agent").

                                   BACKGROUND

      Borrower, Agent and Lenders are parties to a Loan and Security Agreement
dated as of February 13, 1997 (as amended by (i) Amendment No. 1 dated as of
February 27, 1998, (ii) Amendment No. 2 dated as of May 19, 1999, (iii) Waiver
and Amendment No. 3 dated as of March 17, 2000 and as same may be further
amended, supplemented or otherwise modified from time to time, the "Loan
Agreement") pursuant to which Lenders provided Borrower with certain financial
accommodations.

      Borrower has requested that Lenders and Agent amend the Loan Agreement to,
among other things, (a) waive certain Events of Default and (b) amend certain
financial covenants, and Agent and Lenders are willing to do so on the terms and
conditions hereafter set forth.

      NOW, THEREFORE, in consideration of any loan or advance or grant of credit
heretofore or hereafter made to or for the account of Borrower by Agent and
Lenders, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

      1. Definitions. All capitalized terms not otherwise defined herein shall
have the meanings given to them in the Loan Agreement.

      2. Amendment to Loan Agreement. Subject to satisfaction of the conditions
precedent set forth in Section 4 below, the Loan Agreement is hereby amended as
follows:

      2.1. Section 1.2 of the Loan Agreement is hereby amended by inserting the
following defined terms in their appropriate alphabetical order:

            Amendment No. 4 - means Waiver and Amendment No. 4 to Loan and
            Security Agreement dated as of the Amendment No. 4 Effective Date
            among Borrower, Lenders and Agent.

<PAGE>

            Amendment No. 4 Effective Date - means August 8, 2000.

            Consigned Lucent Inventory - all Inventory consigned by Borrower to
            Lucent Technologies and kept at Lucent Technologies' locations in
            Columbus. Ohio and Mt. Olive, New Jersey.

            Non-Financed Capital Expenditures - means Capital Expenditures made
            by Borrower during any applicable period which were not financed
            using the proceeds of the Capex Loans or Additional Capex Loans or
            the proceeds of financing obtained by Borrower from a third party,
            provided, that such Capital Expenditures during the applicable
            period exceed $150,000 and provided, further, that Borrower has not
            made a request to Agent for a Capex Loan or Additional Capex Loan to
            finance the purchase of such Capital Expenditures.

            Operating Cash Flow - means with respect to any particular period,
            an amount equal to (i) EBITDA less (ii) Non-Financed Capital
            Expenditures during such period.

      2.2. The reference to "non-financed Capital Expenditures" in the
definition of "Fixed Charge Coverage" in Section 1.2 of the Loan Agreement shall
be changed to "Non-Financed Capital Expenditures".

      2.3. Section 9.3 of the Loan Agreement is hereby amended in its entirety
to provide as follows:

                  "9.3 Specific Financial Covenants. Borrower covenants that,
            unless otherwise consented to by Agent in writing, it shall:

                  (a) maintain a Fixed Charge Coverage of not less than (i) 1.1
            to 1.0 for the nine month period ending March 31, 2001 and (ii) 1.1
            to 1.0 for the twelve month period ending June 30, 2001 and as at
            the end of each fiscal quarter thereafter with respect to the twelve
            month period then ended.

                  (b) until it has maintained a Fixed Charge Coverage of not
            less than 1.10 to 1.00 as at the end of any fiscal quarter for the
            twelve month period then ended commencing with the fiscal quarter
            ending June 30, 2001, maintain an Excess Availability at all times
            of not less than (a) $450,000 during the period commencing on the
            Amendment No. 4 Effective Date and ending on October 31, 2000 and
            (b) $900,000 at all times thereafter.

                  (c) maintain Operating Cash Flow of not less than (i) $525,000
            for the quarter ending September 30, 2000 and (ii) $3,100,000 for
            the two quarters ending December 31, 2000.

                                      -2-
<PAGE>

      2.4. Section 11.1(S) of the Loan Agreement is hereby amended in its
entirety to provide as follows:

                  (S) Borrower shall fail to provide Agent with an appraisal of
            Equipment from Daley-Hodkin Corporation which sets forth an orderly
            liquidation value of Equipment of at least $4,100,000.

      2.5. Borrower and Agent hereby agree that Agent shall deem up to $500,000
of Consigned Lucent Technology to be Eligible Inventory for purposes of
computing the Borrowing Base (so long as such Inventory would otherwise
constitute Eligible Inventory but for Borrower's non-compliance with Section
6.1(C) of the Loan Agreement).

      3. Waiver. Subject to the satisfaction of the conditions precedent set
forth in Section 4 below, Agent and Lenders hereby waive the Events of Default
which have occurred solely as a result of (a) Borrower's failure to maintain a
Fixed Charge Ratio of not less than (.50) to 1.00 for the six month period ended
June 30, 2000, (b) Borrower's failure to comply with the requirements of Section
6.1(C) with respect to the Consigned Lucent Inventory, and (c) Borrower's
failure to comply with Section 11(S) (as in effect immediately prior to this
Amendment) which required that the appraisal of the Equipment set forth an
orderly liquidation value of at least $4,800,000.

      4. Conditions of Effectiveness. This Amendment shall become effective upon
satisfaction of the following conditions precedent: Agent shall have received
(i) four (4) copies of this Amendment executed by Borrower and consented and
agreed to by Microwave Power Devices, Inc., as guarantor and (ii) such other
certificates, instruments, documents, agreements and opinions of counsel as may
be required by Agent or its counsel, each of which shall be in form and
substance satisfactory to Agent and its counsel.

      5. Representations and Warranties. Borrower hereby represents and warrants
as follows:

                  (a) This Amendment and the Loan Agreement, as amended hereby,
            constitute legal, valid and binding obligations of Borrower and are
            enforceable against Borrower in accordance with their respective
            terms.

                  (b) Upon the effectiveness of this Amendment, Borrower hereby
            reaffirms all covenants, representations and warranties made in the
            Loan Agreement to the extent the same are not amended hereby and
            agree that all such covenants, representations and warranties shall
            be deemed to have been remade as of the effective date of this
            Amendment.

                  (c) No Event of Default or Default has occurred and is
            continuing or would exist after giving effect to this Amendment.

                  (d) Borrower has no defense, counterclaim or offset with
            respect to the Loan Agreement.

                                      -3-
<PAGE>

      6. Effect on the Loan Agreement.

            (a) Upon the effectiveness of this Amendment, each reference in the
Loan Agreement to "this Agreement," "hereunder," "hereof," "herein" or words of
like import shall mean and be a reference to the Loan Agreement as amended
hereby.

            (b) Except as specifically amended herein, the Loan Agreement, and
all other documents, instruments and agreements executed and/or delivered in
connection therewith, shall remain in full force and effect, and are hereby
ratified and confirmed.

            (c) Except as specifically provided in Section 3 hereof, the
execution, delivery and effectiveness of this Amendment shall not operate as a
waiver of any right, power or remedy of Agent, nor constitute a waiver of any
provision of the Loan Agreement, or any other documents, instruments or
agreements executed and/or delivered under or in connection therewith.

      7. Governing Law. This Amendment shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns and
shall be governed by and construed in accordance with the laws of the State of
New York.

      8. Headings. Section headings in this Amendment are included herein for
convenience of reference only and shall not constitute a part of this Amendment
for any other purpose.

      9. Counterparts; Telecopied Signatures. This Amendment may be executed in
any number of and by different parties hereto on separate counterparts, all of
which, when so executed, shall be deemed an original, but all such counterparts
shall constitute one and the same agreement. Any signature delivered by a party
by facsimile transmission shall be deemed to be an original signature hereto.

                                      -4-
<PAGE>

      IN WITNESS WHEREOF, this Amendment has been duly executed as of the day
and year first written above.

                                        MPD TECHNOLOGIES, INC.

                                        By: /s/ Thomas V. Gilboy
                                            ------------------------------------
                                         Name: Thomas V. Gilboy
                                         Title: Vice President and Chief
                                                Financial Officer

                                        IBJ WHITEHALL BUSINESS CREDIT
                                        CORPORATION, as Agent and a Lender

                                        By: /s/ Joseph J. Zautra
                                            ------------------------------------
                                         Name: Joseph J. Zautra
                                         Title: Vice President

CONSENTED AND AGREED TO:

MICROWAVE POWER DEVICES, INC.

By: /s/ Al Weber
    -------------------------
    Name: Al Weber
    Title: Chairman, President and CEO

                                      -5-

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