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                                                                   Exhibit 10.29

                            COLLATERAL ASSIGNMENT OF
                        PATENTS, TRADEMARKS & COPYRIGHTS

     THIS COLLATERAL ASSIGNMENT OF PATENTS, TRADEMARKS & COPYRIGHTS is entered
into on this 24/th/ day of January, 2003, by and between AIRNET COMMUNICATIONS
CORPORATION, a Delaware Corporation having a mailing address at 3950 Dow Road,
Melbourne, Florida 32934 ("Debtor"), and SCP PRIVATE EQUITY PARTNERS II, L.P., a
Delaware limited partnership having a mailing address at 300 Building, 435 Devon
Park Drive, Wayne, PA 19087 ("SCP II") and TECORE, INC., a Texas corporation
having a mailing address at 7165 Columbia Gateway Drive, Columbia, Maryland
21406 ("TECORE"). SCP II and TECORE are referred to collectively herein as
"Secured Party."

     NOW, THEREFORE, in consideration of the premises, Debtor hereby agrees with
Secured Party as follows:

1.   Grant of Security Interest.

     1.1 Grant. Debtor hereby grants to Secured Party a first priority security
interest in, and conditionally assigns, but does not transfer title to Secured
Party, all of Debtor's right, title, and interest in and to the following
collateral (collectively, the "Collateral") to secure the repayment of any loans
(the "Loans") under, the satisfaction of any obligations (the "Obligations")
under, and the full, complete and absolute performance by Debtor of each of the
terms and conditions of, the Bridge Loan Agreement, Bridge Loan Promissory
Notes, Security Agreement and other loan documents dated of even date herewith
between Debtor and one or both of the Secured Parties, as amended from time to
time (collectively, the "Loan Agreement"). All capitalized terms used in this
Agreement and not defined herein shall have the meaning ascribed thereto in the
Loan Agreement unless the context clearly provides otherwise.

     1.2 Definition of Collateral. The Collateral shall consist of the
following:

         (a) Each of the Patent Rights which are presently, or in the future may
be, owned, issued, acquired, or used (whether pursuant to a license or
otherwise) by Debtor, in whole or in part, throughout the world, including all
proceeds thereof (including license royalties and proceeds of infringement
suits), foreign filing rights, and rights to extend such Patent Rights;

         (b) All of Debtor's right, title, and interest in and to the patents
and patent applications listed on Schedule A, attached hereto, as the same may
be updated hereafter from time to time;

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         (c) All of Debtor's right, title, and interest in all patentable
inventions, and to file applications for patent under federal patent law or
regulation of any foreign country, and to request reexamination and/or reissue
of the patents, the right (without obligation) to sue or bring interference
proceedings in the name of Debtor or in the name of Secured Party for past,
present, and future infringements of the patents, and all rights (but not
obligations) corresponding thereto in the United States and any foreign country;

         (d) Each of the Trademark Rights which are presently, or in the future
may be, owned, created, acquired, or used (whether pursuant to a license or
otherwise) by Debtor, in whole or in part, throughout the world, including all
proceeds thereof (including license royalties and proceeds of infringement
suits), and rights to renew and extend such Trademark Rights;

         (e) All of Debtor's right, title, and interest in and to the trademarks
and trademark registrations listed on Schedule B, attached hereto, as the same
may be updated hereafter from time to time;

         (f) All of Debtor's right, title and interest to register trademark
claims under any state or federal law or regulation of any foreign country and
to apply for, renew, and extend the Trademark Rights, the right (without
obligation) to sue or bring opposition or cancellation proceedings in the name
of Debtor or in the name of Secured Party for past, present, and future
infringements of Trademark Rights, and all rights (but not obligations)
corresponding thereto in the United States and any foreign country, and the
associated goodwill;

         (g) Each of the Copyrights which are presently, or in the future may
be, owned, created, acquired, or used (whether pursuant to a license or
otherwise) by Debtor, in whole or in part, throughout the world, including all
proceeds thereof (including license royalties and proceeds of infringement
suits), and rights to renew and extend such Copyrights;

         (h) All of Debtor's right, title, and interest in and to the copyrights
and copyright registrations listed on Schedule C, attached hereto, as the same
may be updated hereafter from time to time;

         (i) All of Debtor's right, title and interest to register copyright
claims under any state or federal law or regulation of any foreign country and
to apply for, renew, and extend the Copyrights, the right (without obligation)
to sue or bring opposition or cancellation proceedings in the name of Debtor or
in the name of Secured Party for past, present, and future infringements of the
Copyrights, and all rights (but not obligations) corresponding thereto in the
United States and any foreign country,;

                                       2

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         (j) All general intangibles relating to the Collateral, including all
Software, Know-How, Trade Secrets and other Intellectual Property and
Improvements; and

         (k) All proceeds of any and all of the foregoing (including, without
limitation, license royalties and proceeds of infringement suits) and, to the
extent not otherwise included, all payments under insurance, or any indemnity,
warranty, or guaranty payable by reason of loss or damage to or otherwise with
respect to the Collateral.

2. After-Acquired Patent, Trademark & Copyright Rights. If Debtor shall obtain
rights to any new Patent Rights, patentable inventions, Trademark Rights,
Copyrights or general intangibles relating thereto, the provisions of this
Agreement shall automatically apply thereto. Debtor shall give prompt notice in
writing to Secured Party with respect to any such new rights or any renewal or
extension thereof. Debtor shall bear any expenses incurred in connection with
future applications for patent, trademark or copyright registration.

3. Litigation and Proceedings. Debtor shall commence and diligently prosecute in
its own name, as the real party in interest, for its own benefit, and its own
expense, such suits, administrative proceedings, or other actions for
infringement or other damages as are in its reasonable business judgment
necessary to protect the Collateral. Debtor shall provide to Secured Party any
information with respect thereto requested by Secured Party. Secured Party shall
provide at Debtor's expense all necessary cooperation in connection with any
such suit, proceeding, or action, including, without limitation, joining as a
necessary party. Following Debtor's becoming aware thereof, Debtor shall notify
Secured Party of the institution of, or any adverse determination in, any
proceeding in the United States Patent and Trademark Office or Copyright Office,
or any United States, state, or foreign court regarding Debtor's claim of
ownership in any of the Patent Rights, Trademark Rights, Copyrights or general
intangibles relating thereto, its right to apply for the same, or its right to
keep and maintain such Patent Rights, Trademark Rights, Copyrights or general
intangibles rights.

4. Power of Attorney. Debtor grants Secured Party power of attorney, having the
full authority, and in the place of Debtor, from time to time in Secured Party's
discretion to take any action and to execute any instrument which Secured Party
may deem necessary or advisable to accomplish the purposes of this Agreement,
including, without limitations,: (a) to endorse Debtor's name on all
applications, documents, papers, and instruments necessary for Secured Party to
use or maintain the Collateral; and (b) to ask, demand, collect, sue for,
recover, impound, receive, and give acquittance and receipts for money due or to
become due under or in respect of any of the Collateral. Notwithstanding the
forgoing, Secured Party may not file any claims or take any action or institute
any proceedings

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for the collection of any of the Collateral or assign, pledge, convey, or
otherwise transfer title in or dispose of the Collateral to any person except
upon the occurrence of an Event of Default.

5. Right to Inspect. Debtor grants to Secured Party and its employees and agents
the right to visit Debtor's plants and facilities at which Debtor may design,
develop, manufacture, inspect, assemble, ship or store products or services sold
or licensed under any of the Trademark Rights, Patent Rights or Copyrights, and
to inspect the products, services and quality control records relating thereto
at reasonable times during regular business hours.

6. Events of Default. Any Event of Default under the Loan Agreement shall
constitute an Event of Default.

7. Specific Remedies. Upon the occurrence of any Event of Default: (a) Secured
Party may take any action or pursue any remedies provided by law or in the Loan
Agreement; and (b) Secured Party may notify licensees to make royalty and other
payments on license agreements directly to Secured Party.

8. Further Assurances. Debtor hereby agrees to execute and deliver such further
documents and instruments as Secured Party may reasonably request in order to
more properly evidence, document or perfect the security interest intended to be
created hereby.

9. Governing Law. All acts and transactions hereunder and the rights and
obligations of the parties hereto shall be governed, construed, and interpreted
in accordance with the laws of the State of Delaware, without regard to its
conflict of law provisions.

   IN WITNESS WHEREOF, Debtor and Secured Party have executed this Agreement by
their duly authorized officers as of the date first above written, with the
specific intention that this Agreement constitutes a document under seal.

AirNet Communications Corporation             TECORE, Inc.

By: /s/ Glenn A. Ehley                      By: /s/ Jay Salkini
   -----------------------------------         ---------------------------------
Name: Glenn A. Ehley                        Name: Jay Salkini
     ---------------------------------           -------------------------------
Title: President and Chief Executive        Title: President and Chief Executive
      --------------------------------            ------------------------------
        Officer                                     Officer
      --------------------------------            ------------------------------
Date: January 24, 2003                       Date: January 24, 2003
     ---------------------------------            ------------------------------

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SCP Private Equity Partners, II, LP

By: SCP Private Equity II General Partner,
    L.P., its general partner

By: SCP Private Equity II, LLC

By: /s/ James W. Brown
   ----------------------
     James W. Brown
     a manager

Date: January 24, 2003
     --------------------
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Exhibit 4.4  

 
 

TRUST AGREEMENT    
  

        THIS TRUST AGREEMENT, dated as of January 15, 2003, between GMAC ELF LLC, a Delaware limited liability company, as sponsor (the "Sponsor"), and Wilmington
Trust Company, a Delaware banking corporation, which is acting hereunder not in its individual capacity but solely as Delaware trustee (the "Delaware Trustee"). Sponsor and the Delaware Trustee hereby
agree as follows: 

	1.
	Creation
of Trust. 

        (a)  The
trust created hereby shall be known as "GMAC Education Loan Funding Trust-I". 

        (b)  The
Sponsor hereby assigns, transfers, conveys and sets over to the Delaware Trustee the sum of $10.00. The Delaware Trustee hereby acknowledges receipt of such amount
in trust from the Sponsor, which amount shall constitute the initial trust estate. The Delaware Trustee hereby declares that it will hold the trust estate in trust for the Sponsor. It is the intention
of the parties hereto that the Trust created hereby constitute a statutory trust under Chapter 38 of Title 12 of the Delaware Code,
12 Del. C. § 3801 et seq. and that this Trust Agreement
constitute the governing instrument of the Trust. The Delaware Trustee is hereby authorized and directed to execute and file a certificate of trust with the Delaware Secretary of State in the
form attached hereto as Exhibit A. 

        (c)  The
Delaware Trustee is authorized and directed to enter into a power of attorney in favor of the Sponsor substantially in the form attached hereto as Exhibit B
and such other documents and take such other action as the Sponsor specifically directs in written instructions delivered to the Delaware Trustee; provided, however, the Delaware Trustee shall not be
required to take any action if the Delaware Trustee shall determine, or shall be advised by counsel, that such action is likely to result in personal liability or is contrary to applicable law or any
agreement to which the Delaware Trustee is a party. 

        (d)  The
Trust hereby is authorized and directed to take, or cause to be taken, all actions deemed necessary or appropriate by the Sponsor in connection with a proposed
public offering, issuance and sale of securities to be issued by the Trust, including, without limitation (i) the preparation, execution,
delivery and filing with the Securities and Exchange Commission of a registration statement for the securities and any and all pre-effective and post-effective amendments to
the registration statement and applications or other appropriate requests for qualification of the securities and amendments thereto under applicable State Blue Sky Laws and (ii) filing,
providing or authorizing the filing or provision of such other documents and information with the National Association of Securities Dealers, Inc and all other governmental, regulatory and rating
agencies as deemed necessary or appropriate by the Sponsor in connection with such offer, issuance and sale. The Trust hereby authorizes and directs the Sponsor to take such actions on behalf of the
Trust pursuant to the power of attorney attached as Exhibit B hereto. The foregoing authorizations and directions shall not limit or restrict in any manner the business or activities or the
execution of other documents by the Trust that may now or hereafter be permitted or provided by the Act. 

        2.    The
Sponsor and the Delaware Trustee will enter into an Amended and Restated Trust Agreement, satisfactory to each such party, to provide for the contemplated operation
of the Trust created hereby. Prior to the execution and delivery of such Amended and Restated Trust Agreement, the Delaware Trustee shall not have any duty or obligation hereunder or with respect to
the trust estate, except as otherwise expressly provided pursuant to Section 1 of this Trust Agreement and as otherwise required by applicable law or as may be necessary to obtain prior to such
execution and delivery any licenses, consents or approvals required by applicable law or otherwise with respect to the Trust. 

        3.    The
Delaware Trustee may resign upon thirty days prior notice to the Sponsor. If no successor has been appointed within such thirty day period, the Delaware Trustee may,
at the expense of the Trust, petition a court to appoint a successor trustee. Any Person into which the Delaware Trustee may 

be merged or with which it may be consolidated, or any Person resulting from any merger or consolidation to which the Delaware Trustee shall be a party, or any Person which succeeds to all or
substantially all of the corporate trust business of the Delaware Trustee, shall be the successor Delaware Trustee under this Trust Agreement without the execution, delivery or filing of any paper or
instrument or further act to be done on the part of the parties hereto, except as may be required by applicable law. 

        4.    GMAC
Commercial Holding Capital Corp. ("GMAC") shall indemnify, defend and hold harmless the Delaware Trustee in its individual capacity and any of its respective
officers, directors, employees and agents against any and all loss, liability or expense (including attorneys' fees) incurred by it in connection with the performance of its duties under this
Agreement, by entering into a power of attorney in favor of the Sponsor substantially in the form attached hereto as Exhibit B and any other documents it may enter and for any other action the
Sponsor specifically directs in written instructions delivered to the Delaware Trustee. The Delaware Trustee shall notify the GMAC promptly of any claim for which it may seek indemnity. Failure by the
Delaware Trustee to so notify GMAC shall not relieve GMAC of its obligations. GMAC shall defend the claim and it shall not be liable for the legal fees and expenses of the Delaware Trustee after it
has assumed such defense. GMAC need not reimburse any expense or indemnify against any loss, liability or expense incurred by the Delaware Trustee through the Delaware Trustee's own willful
misconduct, gross negligence or bad faith. The obligations of GMAC under this Section 4 shall survive the termination of this Agreement or the resignation or removal of the Delaware Trustee. 

        5.    Notwithstanding
anything contained herein to the contrary, this instrument has been executed by Wilmington Trust not in its individual capacity but solely in its capacity
as Delaware Trustee and in no event shall Wilmington Trust Company in its individual capacity or any beneficial owner of the Trust have any liability for the representations, warranties, covenants,
agreements or other obligations of the Trust hereunder, as to all of which recourse shall be had solely to the assets of the Trust. 

        6.    This
Trust Agreement represents the entire agreement between the parties hereto with respect to the subject matter hereof, and supersedes all prior agreements and
understandings between the parties, whether written or oral. 

        7.    This
Trust Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, without reference to its conflict of law provisions, and the
obligations, rights and remedies of the parties hereunder shall be determined in accordance with such laws. Sections 3540 and 3561 of Title 12 of the Delaware Code shall not apply to the Trust. 

        8.    This
Trust Agreement may be executed in two or more counterparts, each of which shall be an original, but all such counterparts shall together constitute one and the same
agreement. 

[Signature
page follows] 

        IN
WITNESS WHEREOF, the parties hereto have caused this Trust Agreement to be duly executed by their respective officers hereunto duly authorized, as of the day and year first above
written. 

	 	 	WILMINGTON TRUST COMPANY

as Delaware Trustee
	

 	
 	

By:	

/s/  PATRICIA A. EVANS      
 Name: Patricia A. Evans

Title: Assistant Vice President

	 	 	GMAC ELF LLC

as Sponsor
	

 	
 	

By:	

/s/  RONALD W. PAGE      
 Ronald W. Page

Vice President

Agreed
to and accepted by: 

	GMAC COMMERCIAL HOLDING CAPITAL CORP.	 
	

By:	

/s/  DAVID CHEUNG      
 David Cheung

Vice President	

 

Exhibit A  

 
 

CERTIFICATE OF TRUST OF
  GMAC EDUCATION LOAN FUNDING TRUST-I    
  

        THIS Certificate of Trust of GMAC Education Loan Funding Trust-I (the "Trust"), is being duly executed and filed by the undersigned, as trustee, to
form a statutory trust under the Delaware Statutory Trust Act (12 Del. Code, § 3801 et seq.) (the "Act"). 

        1.    Name.
The name of the statutory trust formed hereby is GMAC Education Loan Funding Trust-I. 

        2.    Delaware
Trustee. The name and business address of the trustee of the Trust in the State of Delaware is Wilmington Trust Company, Rodney Square North, 1100 North Market
Street, Wilmington, Delaware 19890-0001, Attention: Corporate Trust Administration. 

        3.    Effective
Date. This Certificate of Trust shall be effective upon filing. 

        IN
WITNESS WHEREOF, the undersigned has duly executed this Certificate of Trust in accordance with Section 3811(a) of the Act. 

	 	 	WILMINGTON TRUST COMPANY

as Delaware Trustee
	

 	
 	

By:	

 Name:

Title:

Exhibit B  

 
 

POWER OF ATTORNEY    
  

        BE IT KNOWN that the undersigned, Wilmington Trust Company, not in its individual capacity but solely as Delaware trustee (the "Delaware Trustee") of GMAC
Education Loan Funding Trust-I, a Delaware statutory trust (the "Trust") created under the Trust Agreement, dated as of January 14, 2003, between GMAC ELF LLC, as sponsor (the
"Sponsor"), and the Delaware Trustee, does hereby nominate, constitute and appoint the Sponsor, and its agents and attorneys, as its true and lawful representatives and
attorneys-in-fact, with full power and authority in its name, place and stead to prepare, negotiate, make, execute, sign, acknowledge, swear to, file and deliver on behalf of
the Trust any and all documents, reports, filings, instruments, certificates and opinions as shall be appropriate or necessary in connection with the conduct of its business and activities, and to
take all actions necessary or appropriate in connection therewith, all as determined by the Sponsor. 

        The
rights, powers, and authority of the Sponsor, as granted by this instrument, shall commence and be in full force and effect as of the date of this Power of Attorney, and shall remain
in full force and effect until the purposes of this appointment and authorization be accomplished, or until the Delaware Trustee gives notice that such rights, powers and authority are terminated,
whichever shall earlier occur. 

        This
Power of Attorney shall be governed by and construed in accordance with the laws of the State of Delaware. 

        IN
WITNESS WHEREOF, Wilmington Trust Company, not in its individual capacity, but solely as Delaware Trustee, intending to be legally bound hereby, has duly executed this instrument. 

        Dated
as of January 15, 2003. 

	 	 	Wilmington Trust Company not in its individual capacity but solely as Delaware Trustee of GMAC Education Loan Funding Trust-I
	

 	
 	

By:	

 Name:

Title:

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TRUST AGREEMENT

CERTIFICATE OF TRUST OF GMAC EDUCATION LOAN FUNDING TRUST-I

POWER OF ATTORNEY

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