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                                                                   EXHIBIT 10.39
                             RF Monolithics, Inc.
                             Consulting Agreement

This Agreement is entered into this 28/th/ day of June, 2000 by and between RF
Monolithics, Inc. having offices at 4347 Sigma Road, Dallas, Texas 75244 (:RFM")
and Thomas S. Garrett ("Consultant"), whose principal place of business is at
600 Hudnall Court, Keller, Texas 76248. The purpose of the Agreement is to
engage the services of Thomas S. Garrett as a Consultant to RFM.

IT IS AGREED

1.   Responsibilities of Consultant

     A.        Consultant responsibilities under this Agreement shall be to
          perform such duties as necessary and assigned by the President and
          Chief Executive Officer of RFM. Consultant will report to David M.
          Kirk, President and Chief Executive Officer of RFM.

     B.        Consultant responsibilities under this Agreement may include, but
          are not limited to:

          Transitioning RFM's Manufacturing organization into a world-class
          operation where product costs, inventories and cycle time are reduced,
          processes are stable, capacity is assured, outsourcing is evaluated
          and implemented where appropriate and costs are among the lowest in
          the industry.

1.   Terms and Conditions

     Term: The term of this Agreement shall be through January 31, 2001.

     Consulting Fee: Consultant will work full-time, five (5) days per week, and
     be compensated at a rate of $11,666.67 pr month, earned and paid monthly.
     The RFM Restricted Stock which was granted to you on January 26, 2000 and
     its terms as described in the Consulting Agreement dated February 1, 2000
     will remain a part of this Agreement.

     Termination: RFM may terminate this Agreement immediately in the event
     Consultant accepts any employment or consulting arrangements with third
     parties which RFM may, in its reasonable discretion, consider to be
     detrimental to RFM's business interest.
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     Either party may terminate this Agreement at its convenience, for any or no
     reason whatsoever, upon thirty (30) days' prior written notice to the
     other. In such event, Consultant shall continue to provide services until
     the termination date, unless otherwise advised by RFM.

2.   Confidentiality

     Consultant recognizes that RFM has and will have copyrights, business
     affairs, future plans, trade secrets, process information, technical
     information and other proprietary information (collectively, "Information")
     which are valuable, special and unique assets of RFM. Consultant agrees
     that he will not at any time or in any manner, either directly or
     indirectly, use any Information for the Consultant's own benefit, or
     divulge, disclose or communicate in any manner any Information and treat it
     as strictly confidential.

3.   Ownership of Work Project

     Consultant agrees that any and all ideas, improvements, inventions and work
     of authorship conceived, written, created or first reduced to practice in
     the performance of work under this Agreement ("Work Product") shall be the
     sole and exclusively property of RFM and hereby assigns to RFM all its
     rights, titles and interests, in and to, any and all such Work Product.

4.   Survival

     Section 4 shall survive termination or expiration of this Agreement for a
     period of three (3) years from the effective date of such termination or
     expiration.

5.   General

     Consultant will work exclusively for RFM. Consultant shall obtain RFM
     approval prior to engaging in any consulting or other collaboration with
     institutions other than RFM. Consultant shall not work or consult for RFM's
     competitors including, but not limited to, Telefilter, SAWtek, Toko,
     Siemens, TMX, AVX and Panasonic.

     Consultant is not eligible to participate in the Company's employee
     benefits program. This Agreement does not constitute an employment contract
     with RFM.
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This Agreement constitutes the complete understanding and agreement with respect
to the subject matter thereof, and supersedes all prior understandings and
agreements relating to its subject matter. This Agreement may not be waived,
modified or amended unless mutually agreed upon in writing. This Agreement, nor
any rights or obligations, may not be assigned by Consultant without written
consent of RFM. This Agreement shall be governed by the laws of the State of
Texas

Agreed to this 28/th/ day of June, 2000


RF Monolithics, Inc.                        Thomas S. Garrett

/s/ David Kirk                              /s/ Thomas S. Garrett
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(Signature)                                         (Signature)


President & CEO                             Consultant
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(Title)                                     (Title)