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                                                                   EXHIBIT 10.40

                          SUBSCRIPTION SERVICE ADDENDUM

      THIS SUBSCRIPTION SERVICE ADDENDUM ("Addendum") TO THE VENDOR AGREEMENT,
dated 9-27-05 ("VA") is made effective as of 9-27-05 2005, by and between BEST
BUY STORES, L.P., a Virginia limited partnership, with offices at 7601 Penn
Avenue South, Richfield, Minnesota 55423 ("Dealer") and CLEARWIRE LLC, a Nevada
limited liability company, with offices at 5808 Lake Washington Blvd. NE, Suite
300, Kirkland, Washington 98033 ("Vendor"). Dealer and Vendor may each be
referred to herein as "Party" or together may be referred to as "Parties", as
appropriate.

                                    RECITALS:

      WHEREAS, Vendor is a provider of wireless broadband service and is duly
authorized by all applicable regulatory agencies to provide such services in its
service areas; and

      WHEREAS, Dealer is a nationwide specialty retailer of various products,
including without limitation consumer electronics, personal computers,
entertainment software, appliances, and internet connectivity and content
products and services; and

      WHEREAS, Vendor and Dealer each wish to enter into this Addendum to the
Agreement to provide for the Marketing and sale of Vendor Services through
Dealer's Sales Channels.

      NOW, THEREFORE, in consideration of the mutual promises contained herein
and other good and valuable consideration, the receipt and sufficiency of which
is hereby acknowledged, the Parties agree as follows.

1. DEFINITIONS:

1.1   ACTIVATION OR ACTIVATED: Means Vendor's initiation of Services in
      Equipment that is owned or leased by a Member.

1.2   ACTIVATION COMMISSION: Activation Commission shall have the meaning
      described in Exhibit C.

1.3   AFFILIATE: Affiliate of a Party shall mean an entity that directly or
      indirectly controls, is controlled by, or is under common control
      with such Party.

1.4   ADDENDUM: Addendum shall mean this Subscription Service Addendum,
      including the Exhibits attached hereto and any amendment, addendum,
      Exhibit or schedule later executed by authorized representatives of the
      Parties.

1.5   COMPETITORS: Competitors, with respect to Dealer's competitors, shall mean
      any physical or on-line retailer selling Vendor services similar to those
      offered through the Sales Channels, including Vendor and its Affiliates.

1.6   CONFIDENTIAL INFORMATION: Confidential Information shall have the meaning
      described in Section 13 of the VA.

1.7   CURRENT SERVICES: Current Services shall mean those broadband wireless
      services provided by Vendor to its customers that Dealer may Market
      through the Sales Channels, with mutually agreed upon Activation
      Commissions or other compensation arrangements, as set forth in Exhibit C.

1.8   CUSTOMER DATA: Customer Data shall have the meaning described in Section
      10.

1.9   DEALER MARKS: Dealer Marks shall mean trademarks, service marks, trade
      names, logos and other brand marks and names used by Dealer for purposes
      of identifying itself.

1.10  EQUIPMENT: Means the Vendor-approved communications equipment needed by a
      Member to use the Services.

1.11  FUTURE SERVICES: Future Services shall mean services offered by Vendor,
      either now or in the future, other than those Current Services identified
      in Exhibit C.

1.12  MARKET: Market (and all other forms of the word, such as "Marketing")
      shall mean promoting the sale of the Services through efforts within the
      Sales Channels, and marketing efforts through advertising and other means,
      in an effort to sell the Services.

1.13  MARKS: Marks shall mean collectively the Vendor Marks and the Dealer
      Marks.

1.14  MEMBER: Member shall mean those consumers who initiate a transaction and
      subscribe as a customer of Vendor for a Current Service through a Sales
      Channel in accordance with the Vendor requirements described on Exhibit F.
      A Member shall continue to be a Member for so long as the Member continues
      to subscribe to the

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      Service. Any Current Service reinstated by a former Member within thirty
      (30) days after interruption in such Current Service, which is reinstated
      either through a Sales Channel or a sales channel internal to Vendor,
      shall result in such person continuing to be a Member.

1.15  PUBLISHED RATES: The rates that Vendor publishes in its rate plan
      brochures, or other Vendor documentation, as revised from time to time.

1.16  SALES CHANNELS: Sales Channels shall mean Selected Dealer Stores and other
      channels through which the Parties agree to Market and sell the Current
      Services, including (a) the Selected Dealer Stores, (b) BestBuy.com and
      other Dealer Affiliates, and (c) a "1-800" number to be designated by the
      Parties for Members and potential Members. The Parties do not intend to
      use the channels described in clauses (b) and (c) of this Section 1.16
      until they execute a separate agreement with respect to those channels.

1.17  SELECTED DEALER STORES: Selected Dealer Stores are the retail stores of
      Dealer listed on Exhibit A.

1.18  SERVICES: Services shall mean the Current Services and Value Added
      Enhancements.

1.19  TERM: Term shall have the meaning described in Section 6.1.

1.20  VALUE ADDED ENHANCEMENTS: Value Added Enhancements shall mean those
      enhancements to Current Services mutually agreed upon by the Parties and
      developed by Vendor.

1.21  VENDOR MARKS: Vendor Marks shall mean any and all trademarks, service
      marks, trade names, designs, logos and other brand marks, names and
      insignia owned or used by Vendor or its Affiliates in connection with
      identifying themselves, their products, their business units or otherwise.

2. CHANNEL CONTROL; CUSTOMER PROTECTION.

2.1 NO INDUCEMENT TO CANCEL. In consideration and recognition of (1) Vendor's
grant to Dealer of the right to use the Vendor Marks on the terms stated in this
Addendum and the great value of the goodwill associated with Dealer's ability to
use the Marks, which rights and value are not available to distributors
generally, (2) the right of Dealer to advertise affiliation with Vendor as an
authorized representative of Vendor, (3) the value of specialized, technical
knowledge of the broadband wireless industry, and of the Equipment and the
Services, imparted by Vendor to Dealer from time to time, and (4) Dealer's
access to Vendor's Confidential Information and trade secret information on the
terms stated in this Addendum, Dealer will not (and Dealer will not permit its
officers, directors, key employees, principals, any Sub-Representative, any
Affiliate of Dealer or any Person owning a controlling interest in Dealer or an
Affiliate of Dealer to), during the Term of this Addendum, and for a period of
two years thereafter, produce, publish, or make available, advertising or
marketing materials specifically targeting Members suggesting or inducing them
to cancel their Service and purchase wireless broadband services from a provider
other than Vendor. Notwithstanding the foregoing, nothing contained herein is
intended to limit or restrict Dealer's general marketing and advertising.

2.2 NO OTHER USE OF VENDOR TECHNOLOGY. During the Term of this Addendum, Dealer
will not, through any Sales Channel (including, but not limited to, Selected
Dealer Stores, as updated from time to time), sell any wireless broadband
services or equipment that include, incorporate or rely upon any Vendor
Equipment, Marks, intellectual property or Services, except for sales of the
Services to Members in accordance with the terms of this Addendum.

3. NO MINIMUM COMMITMENT. Despite anything to the contrary contained in this
Addendum, nothing in this Addendum shall be construed to provide that any
minimum amount of the Current Services, Future Services, Value Added
Enhancements, or Welcome Kits shall be Marketed or sold through the Sales
Channels.

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4. DUTIES AND RESPONSIBILITIES OF PARTIES.

4.1     Marketing, Pricing and Sale of the Current Services.

4.1.1   MARKETING. Dealer shall offer and Market the Services in the Sales
        Channels pursuant to the terms of this Addendum, and Vendor shall
        provide the Services as set forth in this Addendum. Dealer will use
        commercially reasonable efforts to promote and sell the Services
        consistent with Dealer's internal sales, marketing and merchandising
        plans as may be amended from time to time, and consistent with the
        requirements of Section 9.1. Dealer has the right to establish and
        customize, at its discretion, Marketing efforts related to the Services,
        provided that Dealer complies with its obligations under this Addendum.

4.1.2   MARKET MAKER CAMPAIGN. Dealer will use its commercially reasonable
        efforts (consistent with the requirements of Section 9.1) during the
        Term of this Addendum to initiate, promote and manage the "Dealer Market
        Maker Campaign" more specifically described on the attached Exhibit B
        and incorporated herein by this reference. The fees or payments related
        to the Dealer Market Maker Campaign are described in Exhibit C attached
        hereto.

4.1.3   Reserved.

4.1.4   CUSTOMER SERVICES. Dealer will direct all Members who request
        troubleshooting assistance, or assistance with Activation or warranty
        issues, or who have problems with the Equipment, to make contact with
        Vendor's customer service department either through appropriate links at
        www.clearwire.com or by calling Vendor at its toll-free number.

4.1.5   COMPLIANCE WITH POLICIES; ACCESS. Dealer agrees to maintain operations
        and follow procedures that are in substantial compliance with the
        policies and requirements specified on Exhibit F. Subject to a separate
        written agreement and associated processes and guidelines, Dealer will
        allow Vendor reasonable access to Selected Dealer Stores.

4.1.6   Reserved.

4.1.7   Reserved.

4.1.8   Reserved.

4.1.9   Reserved.

4.1.10  DEALER CODES. Dealer agrees that it will not allow any other Person to
        use its Dealer code(s) or other identifying numbers provided by Vendor.

4.1.11  STANDARD OF CONDUCT. Dealer will conduct any and all activities in
        connection with this Addendum in compliance with all applicable laws and
        regulations, consistent with the highest standards of fair trade, fair
        competition and business ethics. Further, Dealer will represent the
        Services fairly and make no false or misleading representations
        regarding the Services, and will not engage in any illegal, deceptive,
        misleading, unethical or improper acts in performing its duties under
        the Agreement.

4.1.12  NOTICE OF EVENTS. Dealer will notify Vendor in writing immediately upon
        the occurrence of any of the following events that arise in connection
        with or related to Vendor, the Services or the Equipment:

        (1) suit or proceeding initiated against Dealer;

        (2) written claim or demand; and

        (3) any investigation of Dealer by any governmental authority.

4.1.13  USE OF VENDOR MARKS. Dealer will use Vendor's Marks in accordance with
        the terms, conditions and guidelines set forth on Exhibit D attached
        hereto.

4.1.14  VENDOR PROMOTION. Vendor may (i) promote Dealer's Marketing of the
        Current Services and the sale of the Current Services and the Equipment
        and Value Added Enhancements, and (ii) support Dealer's branding efforts
        via Vendor's agreed upon marketing channels.

4.1.15  PRICING FOR SERVICES. Prices paid by Members for the Services shall not
        be greater than the prices paid by subscribers to the Current Services
        through any Dealer Competitor, other than prices paid by employees

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        of Vendor or its Affiliates or employees of Vendor's marketing or
        distribution partners. The parties acknowledge that Service pricing may
        vary geographically and that the foregoing parity language is not
        intended to reflect or require a national standard. Vendor shall use
        commercially reasonable efforts to notify Dealer of any changes in
        prices at least sixty (60) days prior to the effective date of the
        change; provided however that failure to provide such notice despite
        reasonable efforts shall not constitute a breach of this Addendum. In no
        event, however, will such notice be less than the notice provided by
        Vendor to any Dealer Competitor. Notwithstanding the above, the Parties
        agree that Vendor sets the prices for Services in its sole and absolute
        discretion. Dealer shall not vary the Published Rates or any terms of
        the Services.

4.1.16  SERVICE AVAILABILITY DATABASE. Vendor will provide access to Vendor's
        service availability database to assist Dealer with the registration of
        Members. The sale of the Current Service will occur through Vendor and
        be finalized by Vendor. Vendor shall have the sole right in its
        discretion to reject the enrollment of any customer submitted by Dealer
        to Vendor for the Current Services. No contract between Vendor and a
        customer shall exist until the customer is accepted and approved by
        Vendor, and a Current Service is Activated.

4.1.17  INVENTORY. Dealer will make commercially reasonable efforts to maintain
        an inventory of Equipment sufficient to meet reasonable, anticipated
        demand from Members.

4.1.18  FUTURE SERVICES. The Parties anticipate that Future Services may become
        available for Marketing after the date of this Addendum and that such
        Future Services, and the compensation related to those Future Services,
        may become part of this Addendum. Vendor will notify Dealer of any
        changes in such prices at least sixty (60) days prior to the commercial
        launch of such Future Service provided however that failure to provide
        such notice despite reasonable efforts shall not constitute a breach of
        this Addendum. Exhibit C shall be amended from time to time to include
        any Future Service that is re-designated as a Current Service under this
        Addendum and the agreed upon compensation arrangements related thereto.

4.1.19  BILLING, INSTALLATION, SERVICE AND SUPPORT. Vendor will be responsible
        for billing Members for the Services and collecting payment for the
        Services from the Members as it determines in its sole discretion.
        Dealer will refer billing and service questions regarding the Current
        Services to Vendor. Dealer shall have no right or obligation to bill or
        collect from a Member any money or charges for Services, unless
        otherwise agreed to in writing by the Parties. Vendor shall also be
        responsible for providing the installation, service and support of the
        Services. Upon Activation of a particular Member in accordance with
        Vendor's Activation procedures, such Member will become a customer of
        Vendor and Dealer shall have no responsibility with respect to billing
        or provision of Service.

4.1.20  VALUE ADDED ENHANCEMENTS. From time-to-time, Vendor and Dealer shall
        discuss and may mutually agree upon Value Added Enhancements to be
        bundled with the Current Services or offered separately by Dealer
        through the Sales Channels.

4.1.21  SERVICE INFORMATION AND TRAINING. Vendor shall provide to Dealer
        information that is accurate and updated in a timely manner about
        Services' features, functionality, and offers and promotions including
        accurate descriptions of the Current Service price plan options and the
        benefits of such offers, plans or promotions, for Dealer to use as it
        Markets the Services to interested customers. In addition, Vendor shall
        provide Dealer with prior written notice at least *** before there are
        any changes in Service features, pricing, promotions, offers, service
        and support packages or technology and such notice shall describe the
        changes, provided however that failure to provide such notice despite
        reasonable efforts shall not constitute a breach of this Addendum.
        Vendor will also provide Dealer, at no charge, with an adequate number
        of copies of any necessary training and product information brochures
        and will assist with the training of Dealer personnel on Dealer's
        premises, at no charge, as mutually agreed, in order that Dealer's sales
        force will be adequately knowledgeable about the Services.

4.1.22  VENDOR GUIDELINES. Vendor will use commercially reasonable efforts to
        comply, to the extent permitted under applicable regulatory
        requirements, with Dealer's vendor, reporting and information system
        requirements, specification and guidelines in accordance with the
        provisions of Exhibits F and G.

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5. COMPENSATION

5.1   PAYMENT. Vendor agrees to pay Dealer the Activation Commissions in the
      amounts and at the times described in Exhibit C.

5.2   OTHER DISTRIBUTORS. Dealer acknowledges that the compensation paid by
      Vendor and other terms and conditions applicable to adding Members to
      Vendor's Services may vary among representatives and other distributors of
      Vendor's Services in Vendor's sole discretion. Dealer agrees that it will
      have no claim against Vendor as a result of any such variation.

5.3   LATE FEES; OFFSETS. If Vendor fails to make any required payment within
      thirty days following the due date, except to the extent such payment is
      disputed by Vendor in good faith, with written notice of the dispute to
      Dealer, it will pay to Dealer a late fee equal to the lesser of *** of the
      amount of the delinquent payment (including unpaid late fees), or the
      highest amount allowed by law, for each month such payment is not made.
      The Parties further agree that, regardless of whether this Addendum is in
      effect or not, any past due monies owed by one Parry to the other under
      this Addendum, may be offset against other amounts due to the paying
      Party.

6. TERM, TERMINATION AND DEFAULT.

6.1   TERM. This Addendum shall commence on the date hereof and shall continue
      for *** ("Initial Term"). After the Initial Term, this Addendum shall
      automatically renew for up to *** terms ("Renewal Term"), unless
      terminated by either Party upon written notice provided at least *** days
      prior to the expiration of the Initial Term or any Renewal Term. The
      Initial Term and Renewal Term(s) may be collectively referred to herein as
      the "Term." Vendor's obligations to make Activation Commission and
      Residual Payments (as described in Exhibit C) to Dealer shall survive any
      expiration or termination of this Addendum only as provided in Exhibit C.
      Notwithstanding the foregoing, termination of the Vendor Agreement between
      the parties shall constitute termination of this Addendum.

6.2   EVENT OF DEFAULT. In the event that any of the following (hereinafter
      referred to as an "Event of Default") occurs:

6.2.1 either Party, at any time, fails to perform any of their respective
      "material obligations" set forth in this Addendum; or

6.2.2 a receiver of any property of either Party shall be appointed in any
      action, suit or proceeding by or against such Party;

then upon the occurrence of such Event of Default the non-defaulting Party may
give written notice of such Event of Default to the Defaulting Party who shall
have thirty (30) days to cure such Event of Default. If such breach is not cured
within 30 days of the Defaulting Party's receipt of written notice adequately
describing such breach, then the non-defaulting Party may immediately terminate
this Addendum upon notice but without further obligation and without incurring
any liability for such termination. For purposes of this Section 6.2, and for
purposes of clarification and not of limitation, Dealer's obligation set forth
in Sections 4.1.1 and 4.1.2 shall be considered "material obligations."

7. SURVIVAL. The provisions of Sections 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18,
   Exhibit C, and those other provisions that by their nature are intended to
   survive, shall survive any termination or expiration of this Addendum.

8. PROPRIETARY RIGHTS.

8.1   OWNERSHIP. All rights, title and interests in the Vendor Marks and other
      intellectual property rights of Vendor are and shall remain the property
      of Vendor. All rights, title and interests in the Dealer Marks and other
      intellectual property rights of Dealer are and shall remain the property
      of Dealer.

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8.2   LICENSE FOR VENDOR MARKS. Vendor grants Dealer a non-exclusive, royalty
      free, revocable license to use, copy, affix, reproduce and display, during
      the Term of this Addendum, only those Vendor Marks identified in writing
      by Vendor to Dealer for use in connection with the performance of Dealer's
      obligations under this Addendum; provided, however, that such use is
      subject to written approval by Vendor and in compliance with Vendor's
      rules and procedures relating to the Vendor Marks as described and
      attached as Exhibit D. In the event Vendor's rules and procedures are
      changed and Dealer has existing Marketing ads and other such collateral in
      use, Vendor will use commercially reasonable efforts to provide Dealer
      with ninety (90) days notice of such changes. Vendor will provide Dealer
      with an account manager that will serve as Dealer's single point of
      contact for all questions regarding the use of Vendor's Marks. In no event
      will Dealer be required to obtain written approval for advertising
      materials.

8.3   LICENSE FOR DEALER MARKS. Dealer grants Vendor a non-exclusive, royalty
      free, revocable license to use, copy, affix, reproduce and display, during
      the Term of this Addendum, any and all of the Dealer Marks in connection
      with the performance of Vendor's obligations under this Addendum;
      provided, however, that such use is in compliance with Dealer's rules and
      procedures relating to the Dealer Marks as outlined on Dealer's extranet
      site www.extendingtbereach.com.

8.4   CHALLENGES. Dealer will not challenge the title or any rights of Vendor
      (or other owners of the Marks) in and to the Marks either during the Term
      of this Addendum or thereafter.

8.5   PROTECTION OF MARKS. Dealer agrees to assist Vendor at Vendor's request,
      and Vendor agrees to reimburse Dealer for all associated reasonable and
      necessary costs incurred by Dealer at Vendor's request in connection with
      this Addendum, to protect Vendor's rights to the Marks. Vendor, if it so
      desires, may commence or prosecute any claims or suits in its own name or
      in the name of Dealer or join Dealer as a party to this Addendum for such
      purposes. When known by Dealer, Dealer will promptly notify Vendor in
      writing of any infringements or imitations by others of the Marks. Vendor
      will have the sole right to determine whether any action will be taken on
      account of any such infringements or imitations. Dealer will not institute
      any suit or take any action on account of any such infringements or
      imitations without first obtaining the written consent of Vendor.

9. MUTUAL OBLIGATIONS.

9.1 STANDARD OF CARE. In connection with the performance by the Parties of their
respective obligations under this Addendum, each Party shall employ a standard
of care, skill, and diligence consistent with the highest professional standards
practiced in the Parties' respective industries. Each Party's personnel shall
adhere to the highest standards of honesty, integrity, fair dealing and ethical
conduct in all dealings under this Addendum or related to the Marketing, sale,
service and support of the Current Services program provided hereunder. Each
Party's personnel, delegates and subcontractors shall be courteous, respectful,
and professional with customers, employees, and suppliers.

9.2 LICENSES AND PERMITS. Each Party shall, at its sole cost and expense, have
the sole responsibility to (i) obtain all applicable licenses, permits and other
authorizations necessary to perform its obligations under this Addendum and (ii)
ensure that all aspects of the Services provided by either Party to Dealer's
customers or to Members under this Addendum, and the obligations of each Party
under this Addendum, are performed in compliance with all applicable laws,
ordinances, rules and regulations.

9.3 RIGHT TO AN AUDIT. Either Party shall, within *** of the written request of
the other Party, provide to the requesting Party an accounting of sales of
Current Services to Members during the Term of this Addendum. Throughout the
Term of this Addendum and for a period of two years following its termination,
each Party shall also have the right to inspect, audit and copy the other
Party's books and records directly relating to the sale of the Current Services
to Members upon thirty (30) days prior written notice at the sole cost of the
party conducting or representing the audit and not more than twice in any 12
month period. The audited Party will use commercially reasonable efforts to
cooperate with the auditing party or their representatives performing such audit
and shall give them full access to all of their books and records directly
related to sale of the Services to Members. In the event that such Audit reveals

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an underpayment greater than 5% the underpaying party agrees to pay for the
reasonable costs of the audit in addition to making appropriate payment to
address the underpayment.

9.4 RECONCILIATION: Dealer and Vendor agree that it is to the best interest of
both Parties to follow a timely and periodic reconciliation process to determine
any compensation disputes and secure resolution. Vendor agrees to respond to
Dealer compensation disputes within 30 days, including the result and Vendor's
reasons. Should Vendor be unable to comply with the 30-day response period, it
will inform Dealer as to the reasons and also a revised date upon which the
results can be expected. This Section 9.4 is not intended to supersede any other
post audit rights currently in existence.

10. CUSTOMER DATA.

10.1 DEFINITION OF "CUSTOMER DATA".     ***

10.3 SHARING OF CUSTOMER DATA. Subject to applicable law, each Party agrees to
provide the other with Customer Data obtained from or about Members as may be
reasonably requested from time to time by a Party solely for purposes of
confirming compliance with a Party's obligations described this Addendum.

11. REPRESENTATIONS AND WARRANTIES.

11.1 REPRESENTATIONS AND WARRANTIES OF VENDOR. Vendor represents, warrants and
covenants to Dealer as follows:

11.1.1  Vendor, through itself or its Affiliates, has the authority to enter
        into and perform its obligations under this Addendum and the person(s)
        signing this Addendum on behalf of it are authorized to execute this
        Addendum and bind Vendor.

11.1.2  Vendor, through itself or its Affiliates, is the sole owner of or has
        the authority to use, license and sub-license all proprietary rights in
        and relating to the Vendor Marks, including all copyright, trademark,
        service mark, trade secret and other intellectual property rights, and
        the use by Dealer of the Vendor Marks in compliance with this Addendum
        will not infringe on or otherwise interfere with the rights of any third
        party.

11.1.3  Vendor, through itself or its Affiliates, has all applicable licenses,
        permits and other authorizations necessary to perform its obligations
        under this Addendum and sell the Services and its performance of its
        obligations under this Addendum (whether through itself, its employees,
        representatives, designees, agents or any other person or entity
        performing Vendor's obligations) shall at all times be in compliance
        with all applicable laws, ordinances, rules and regulations and shall
        not infringe on any right of any third party.

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11.2    REPRESENTATIONS AND WARRANTIES OF DEALER. Dealer represents warrants and
        covenants to Vendor as follows:

11.2.1. Dealer, through its Affiliates, has the authority to enter into and
        perform its obligations under this Addendum and the person(s) signing
        this Addendum on behalf of it are authorized to execute this Addendum
        and bind Dealer.

11.2.2. Dealer is the sole owner of or has the authority to use, license and
        sublicense all proprietary rights in and relating to the Dealer Marks,
        including all copyright, trademark, service mark, trade secret and other
        intellectual property rights and the use by Vendor of the Dealer Marks
        in compliance with this Addendum will not infringe on or otherwise
        interfere with the rights of any third party.

11.2.3. Dealer, through its Affiliates, has all applicable licenses, permits and
        other authorizations necessary to perform its obligations under this
        Addendum and its performance of its obligations under this Addendum
        (whether through itself, its employees, representatives, designees,
        agents or any other person or entity performing Dealer's obligations)
        shall at all times be in compliance with all applicable laws,
        ordinances, rules and regulations and shall not infringe on any right of
        any third party.

12.     INDEMNIFICATION. In addition to the indemnity obligations contained in
        the Agreement the Parties agree as follows:

12.1 VENDOR'S INDEMNIFICATION. Vendor shall indemnify, defend and hold harmless,
Dealer, its Affiliates and its and their respective officers, directors,
employees and agents from and against any and all losses, costs, obligations,
liabilities, damages, actions, suits, causes of action, claims, subpoenas
demands, settlements, judgments, and other expenses, (including but not limited
to cost of defense, settlement, and reasonable attorney's fees) of whatever type
or nature, including, but not limited to, damage or destruction to property,
injury (including death) to any person or persons, which are asserted against,
incurred, imposed upon or suffered by Dealer by reason of, or arising from (1)
performance or the failure of Vendor (or any of its officers, directors,
employees, agents, delegates or subcontractors) to perform under the terms of
this Addendum, (2) the breach of this Addendum by Vendor (or any of its
officers, directors, employees, agents, delegates or subcontractors), (3) the
violation of any law, rule, regulation or authority by Vendor (or any of its
officers, directors, employees, agents, delegates and subcontractors), and (4)
the acts or omissions of Vendor (or any of its officers, directors, employees,
agents, delegates and subcontractors) relating to the scope of the Addendum,
including but not limited to claims relating to alleged infringement by Vendor
or its Affiliates of third party patent, copyright, trademark or other
proprietary rights.

12.2 DEALER'S INDEMNIFICATION. Dealer shall indemnify, defend and hold harmless,
Vendor, its Affiliates and their respective officers, directors, managers,
employees and agents from and against any and all losses, costs, obligations,
liabilities, damages, actions, suits, causes of action, claims, subpoenas
demands, settlements, judgments, and other expenses, (including but not limited
to cost of defense, settlement, and reasonable attorney's fees) of whatever type
or nature, including, but not limited to, damage or destruction to property,
injury (including death) to any person or persons, which are asserted against,
incurred, imposed upon or suffered by Vendor by reason of, or arising from (1)
performance or the failure of Dealer (or any of its officers, directors,
employees, agents, delegates or subcontractors) to perform under the terms of
this Addendum, (2) the breach of this Addendum by Dealer (or any of its
officers, directors, employees, agents, delegates or subcontractors), (3) the
violation of any law, rule, regulation or authority by Dealer (or any of its
officers, directors, employees, agents, delegates and subcontractors), and (4)
the acts or omissions of Dealer (or any of its officers, directors, employees,
agents, delegates and subcontractors) relating to the scope of the Addendum,
including but not limited to claims relating to alleged infringement by Dealer
or its Affiliates of third party patent, copyright, trademark or other
proprietary rights.

12.3 WAIVER OF DAMAGES. Dealer and Vendor mutually agree that except in the case
of gross negligence, willful misconduct, breach of confidentiality,
Indemnification, or infringement by one party of the other party's intellectual
property, neither party will have any liability to the other party for any
punitive, special, consequential, incidental, or indirect damages, or lost
profits or revenues arising from or relating to this Addendum, the Services, or
the Equipment, even if advised of the possibility of such damages.

13.     WAIVER OF LIENS. The Parties hereby waive and relinquish any and all
        materialman's, mechanics, workman's and other liens, statutory or
        otherwise, upon the property of the other Party's customer.

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<PAGE>

14.     PRESS RELEASES. Either Party may, in its sole discretion, issue an
        initial separate or joint press release relating to this Addendum,
        provided that the releasing Party must obtain the prior written approval
        of the non-releasing Party. Either Party may use the name of such other
        Party in a press release or public announcement(s) relating to the
        rights and obligations set forth in this Addendum and/or the
        relationship established by this Addendum; provided that neither Party
        shall issue any such press release or make any such public
        announcement(s), except for general statements in a Party's marketing
        material identifying that a Vendor/Dealer relationship exists between
        the Parties, without the express prior written consent of the other
        Party.

15.     RELATIONSHIP OF PARTIES. The Parties to this Addendum are independent
        contractors and neither Party shall be deemed an agent, representative,
        or partner of the other Party. This Addendum shall not be interpreted or
        construed to create an association, agency, joint venture or
        partnership, employment, franchise or agency relationship between the
        Parties nor shall it be interpreted or construed to impose any liability
        attributable to such a relationship upon either Party. Neither Party
        shall have any right, power or authority to enter into any Addendum of
        or on behalf of, or incur any obligation or liability of, or to
        otherwise bind, the other Party. Dealer acknowledges that this is a
        non-exclusive agreement with respect to Vendor. Vendor expressly
        reserves the right, without obligation or liability to Dealer, to market
        and sell the Services, the Equipment, and any other products and
        services in the same area served by Dealer, whether through Vendor's own
        stores or representatives or through others, including, but not limited
        to, other authorized representatives, dealers, resellers, distributors,
        and retailers.

16.     DISCLAIMER.

16.1 NO MINIMUM REFERRALS. VENDOR ACKNOWLEDGES THAT DEALER DOES NOT GUARANTEE
ANY MINIMUM NUMBER OF REFERRALS OF CUSTOMERS FOR THE SERVICES AND DOES NOT
GUARANTEE ANY MINIMUM AMOUNT OF REVENUES TO VENDOR UNDER THIS ADDENDUM.
SIMILARLY, DEALER ACKNOWLEDGES THAT VENDOR DOES NOT GUARANTEE ANY MINIMUM NUMBER
OF SALES TO MEMBERS FOR WHICH VENDOR WILL PAY COMMISSIONS TO DEALER UNDER THIS
ADDENDUM.

17.     MISCELLANEOUS.

17.1 DELEGATION, SUBCONTRACTING. Each Party shall be solely responsible for the
conduct of all its agents, subcontractors and transferees. Any delegation,
subcontracting or transferring of duties, obligations or services shall in no
way modify or affect the duties of Vendor or Dealer under this Addendum. Subject
to the foregoing, this Addendum shall be binding upon and inure to the benefit
of the Parties and their respective successors and assigns.

17.2 ASSIGNMENT. This Addendum may not be assigned by either Party without first
obtaining the other Party's express written consent, which consent shall not be
unreasonably withheld, conditioned or delayed; provided, however, that either
Party may assign this Addendum without obtaining the other Party's express
written consent, but only after written notice to the other Party (i) to a
purchaser of all or substantially all of the Party's assets or a majority or
controlling interest in such Party's voting stock, provided that the purchaser's
net worth at the time of purchase is equal to or greater than that of the Party
that seeks to assign the Addendum, and further provided that the purchaser is
not a competitor of the non-assigning Party; or (ii) to a present or future
Affiliate.

17.3 GOVERNING LAW. This Addendum shall be governed, construed and interpreted
in accordance with the laws of the State of New York. The parties hereby waive
their respective rights to trial by jury.

17.4 Amendments. This Addendum may not be modified except by a writing
referencing this Addendum and signed by the Parties.

17.5 CONSTRUCTION. The headings contained herein are for the convenience of
reference only and are not of substantive effect Whenever necessary or proper
herein, the singular imports the plural or vice versa, and masculine, feminine
and neuter expressions are interchangeable. This Addendum incorporates
provisions, comments and

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<PAGE>

suggestions proposed by both Dealer and Vendor. No ambiguity or omission in this
Addendum shall be construed or resolved against either Dealer or Vendor on the
ground that this Addendum, or any of its provisions were drafted or proposed by
Dealer or Vendor.

17.6 SEVERABILITY. If any provision herein shall be deemed or declared
unenforceable, invalid or void by a court of competent jurisdiction, the same
shall not impair any of the other provisions contained herein which shall be
enforced in accordance with their respective terms.

17.7 REMEDIES; WAIVER. No failure or delay by either Party hereto to exercise
any right, power or privilege provided hereunder or under the Addendum or by
applicable law shall operate as a waiver (hereof; nor shall any single or
partial exercise of any such right, power, or privilege preclude any other or
future exercise thereof of the exercise of any other right, power or privilege.
The remedies provided herein shall be cumulative and shall not be exclusive of
any rights or remedies provided by law.

17.8 COUNTERPARTS/FACSIMILE COPIES. THIS Addendum may be executed in one or more
counterparts, each of which shall be deemed an original, but which collectively
will constitute one and the same instrument Facsimile copies of the fully
executed Addendum shall be effective, and the Parties will execute and return
original signature Addendums as soon as reasonably possible.

IN WITNESS WHEREOF, the Parties have executed this Subscription Service Addendum
as of the date first above written.

          CLEARWIRE LLC                            BEST BUY STORES, L.P.
-------------------------------------     --------------------------------------

Signed: /s/ Ben Wolff                     Signed: /s/ Daniel Moc
        ---------------                           -----------------
Print Name: BEN WOLFF                     Print Name: Daniel Moc

Title: EXECUTIVE VICE PRESIDENT           Title: VP. Vendor Mgmt.

Date: 10-3-05                             Date: 10-5-05

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<PAGE>
                                   EXHIBIT A
                                    SELECTED
                                 DEALER STORES

This Exhibit A sets forth the Selected Dealer Stores in which Dealer is
authorized to Market the Services. Vendor and Dealer agree that this Exhibit A
shall be amended from time to time by the Parties and that Vendor will notify
Dealer when additional Dealer store locations become available for Marketing as
well as when Selected Dealer Stores are no longer available for Marketing due to
changes in the geographic coverage of the Current Services.. Vendor shall give
Dealer at least [***} prior written notice of such changes. If Dealer removes a
store from this Exhibit A for any reason other than a breach of this Addendum by
Vendor, Dealer will immediately pay Vendor *** for each such store that is
removed by Dealer, unless Dealer substitutes for each removed store a reasonably
equivalent store that is approved by Vendor (such approval not to be
unreasonably withheld by Vendor). Dealer shall consult with Vendor prior to any
changes to the list of stores on this Exhibit A. If Vendor deactivates a
particular market, and Dealer removes from this Exhibit A the store or stores in
that market, Dealer will be entitled to retain the *** Store Fee for each such
store that is removed from this Exhibit A.

In addition, Vendor has the option to assort a store outside of the Market Maker
program as mutually agreed in the event that Vendor anticipates a low
performance store based on experience in that market. These will be defined as
non-Market Maker stores and not subject to the Market Maker store fee.
Assortment fee for non-Market Maker stores to be mutually agreed upon by Vendor
and Dealer.

<TABLE>
<CAPTION>
                 CLEARWIRE MARKET MAKER STORES

REGION     DISTRICT    STORE NUMBER        STORE NAME       STATE    PROTOTYPE
<S>        <C>         <C>             <C>                  <C>      <C>
   1           2            12         ST. CLOUD MN          MN      36K C2
   1           1            40         EAU CLAIRE Wl         Wl      45K C3-2
   1           1            43         DULUTH MN             MN      45K C3-2
  10          41           128         RENO NV               NV      45K C4.5
  10          40           141         MODESTO CA            CA      45K C4.5
   3           8           182         KILLEEN TX            TX      30K SM
   3           8           244         WACO TX               TX      30K C5
   3          65           280         MIDLAND/ODESSA TX     TX      45K C3-1
  12          20           350         JACKSONVILLE FL       FL      45K C5
  10          45           359         BELLINGHAM WA         WA      30K SM
  10          40           391         TRACY CA              CA      30K C5
  12          20           429         REGENCY MALL FL       FL      45K C4.5
  12          20           430         ORANGE PARK FL        FL      42K C4.5
  12          20           515         DAYTONA BEACH FL      FL      58K C3-1
   1           2           522         BAXTER MN             MN      30K C5
   2          57           526         BOISE ID              ID      45K C5
  10          40           528         STOCKTON CA           CA      45K C5
   8          33           529         VISALIA CA            CA      30K C5
  10          46           539         ANCHORAGE AK          AK      45K C5
  10          46           590         KENNEWICK WA          WA      30K SM
  10          46           600         SPRINGFIELD OR                45K C5
  10          45           798         BURLINGTON WA         WA      20K C5
  10          40           844         MERCED CA             CA      30K C5
  10          41           850         CARSON VALLEY NV      NV      30K C5
   3          65           940         ABILENE TX                    20K C5
</TABLE>

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<PAGE>

                                    EXHIBIT B
                                   *** EXHIBIT

Capitalized terms not otherwise defined in this Exhibit B shall have the meaning
ascribed to such terms in the SSA., This Exhibit B represents further commitment
to promote the Services as set forth in the SSA.

1.      TERM. Status of CLEARWIRE as a featured WIRELESS DATA service provider
        shall commence on *** ("Launch"), and continue as provided herein or
        until the SSA has expired or is Terminated.

2.      RESERVED.

3.      ***

3.1 Best Buy will develop and implement each of the following elements of the
Market Maker Plan to promote the Services in Selected Dealer Stores.

3.1.1 ***. Clearwire shall participate in the *** free of additional cost, with
the exception of vendor funded items booth/display, ***, shipping, additional
hotel room beyond sponsorship agreements. In addition, Best Buy will provide
incremental man hours of training and will promote the Services to its employees
using tools such as: ***, Retail Associate Training, and ***, as those
promotions are currently defined by Best Buy internal practices; and.

3.1.2 ***. 1) Best Buy will provide signage for the Services and Equipment. 2)
Clearwire's Equipment and Services shall have placement on the *** or other
similar display. 3) Best Buy will also provide the Services and Equipment with
placement on interactive terminals (where available); and

3.1.3 ***. Best Buy will provide ***. This support will include advertising
within the following major areas, or other advertising of equivalent value:

      i)    [***] on service availability and version options;

      ii)   [***]

      iii)  [***]

3.1.4 Promotions. [***] Clearwire will have input into such promotions, all
fees, expenses and related administrative charges will be included in the Co-Op
Fee, Store Fee and other marketing funds as described in Exhibit C to the SSA.

4. MARKETING AND USE OF *** FEE. Except as expressly stated otherwise in this
Exhibit or the SSA, the Market Maker Fee and resources shall be expended by Best
Buy in its sole discretion in accordance with this Market Maker Campaign.

5. MARKET MAKER EVALUATION.

Best Buy shall develop the *** and provide it to Clearwire for its review and
comment. Clearwire will then have ten (10) business days to review the *** and
provide its comments to Best Buy. Best Buy will consider Clearwire's comments in
good faith and deliver a final *** to Clearwire for its review prior to Launch.
After Launch, the Parties will meet throughout the duration of the *** to
discuss and evaluate the success of the ***. At these meetings, Clearwire may
propose reasonable revisions to the *** and Best Buy will not unreasonably
reject such proposals.

Best Buy will provide Clearwire with *** reports in a form acceptable to the
Clearwire detailing Best Buy's expenditures in fulfillment of Best Buy's
obligations under the ***.

If the *** declines below the original store funding amount, Best Buy will have
the discretion to modify the plan according to the revised budget. These changes
will be reflected within a revision of the [***]. If the store funding ends
after the initial *** month launch period, according to the Subscription
Services Compensation Addendum, the Market Maker plan ends within a commercially
reasonable time frame to decommission current store placement and assort
Clearwire within the traditional assortment of broadband vendors.

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<PAGE>

                                    EXHIBIT C
                      SERVICE DEFINITIONS AND COMPENSATION

1. CURRENT SERVICES SOLD THROUGH DEALER SALES CHANNELS: Vendor Services that
have been mutually agreed upon by the Parties to be Current Services include:
Wireless Broadband Internet Access service.

2. COMPENSATION. Vendor will compensate Dealer in accordance with the following
procedures.

2.1 ACTIVATION COMMISSIONS

Vendor will pay Dealer a one-time commission equal to *** (the "Activation
Commission") for each Member Activated by Dealer on a one (1) or two (2) year
(as required by the applicable rate plan) Member contract for any Authorized
Service rate plan made available by Vendor to its Members in the same market
area, provided such Member continuously subscribes to the Services during ***
consecutive day period beginning on the date of Activation (the "Chargeback
Period"). Notwithstanding the foregoing, should a Member's service be suspended,
but restored, the period of active service before and after the suspension will
count toward satisfaction of the Chargeback Period, but the period of the
suspension will not be included. In the event a Member's service is suspended
and terminated prior to being restored, the number of days for purposes of
computing the length of the Chargeback Period that was satisfied will not
include the period of the suspension and the Member will be deemed to have
terminated service on the date the suspension period began. Vendor will pay
Dealer all Activation Commissions owing Dealer within thirty (30) calendar days
from the end of the calendar month in which the Member Activations occur. Dealer
acknowledges and agrees that from time to time, Vendor may have rate plans which
Dealer is not authorized to offer hereunder. No Activation Commissions will be
paid for demonstration activations or Dealer employees who activate special
accommodation plans.

The Activation Commission will be subject to Vendor's right to recover or
"Chargeback" the Activation Commission if the applicable Member fails to satisfy
the Chargeback Period for reasons which include, but are not limited to: Service
cancellation, the Member moves out of the area, lack of coverage, suspension or
interruption for any reason (including nonpayment) during the Chargeback Period.
Dealer further understand and agrees that at Vendor's sole discretion,
charge-backs and debits may be offset against any Commissions, bonuses, or other
amounts owed to Dealer by Vendor. If a Member continuously subscribes to
Vendor's broadband wireless service for less than the full Chargeback Period,
Vendor will chargeback 100% of the Activation Commission. In no event will
Vendor charge-back Activation Commissions on more than *** of the total number
of Members Activated by Dealer during the Term of this Addendum. All Chargebacks
must be raised within *** days of Activation or such Chargebacks are waived.

2.2 RESIDUAL

Vendor will pay to Dealer a monthly recurring residual fee (the "Residual")
equal to *** of the gross revenue received by Vendor for the monthly service fee
for the Services (and excluding any modem rental charges of up to *** per month,
and excluding any taxes, governmental surcharges, and other similar charges)
from each Member during the first *** months of such Member's agreement to
purchase Clearwire Authorized Services. Payment of the Residual will be made
within thirty (30) calendar days from the end of the calendar month in which the
Member Activations occur. Vendor's obligation to pay such Residuals survives the
expiration or termination of this Agreement, unless termination results from
Dealer's breach of this Agreement.

2.3 MARKETING FEES

Co-Op Fee: Vendor will pay to Dealer, within thirty (30) calendar days from the
end of the calendar month in which the Member Activations occur, a one-time fee
equal to *** per Activated

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<PAGE>

Member to a marketing co-op fund. Such fund shall be allocated and used in
accordance with Vendor's Co-Op Program or as otherwise agreed by Vendor and
Dealer in writing. This Co-Op Fee is not subject to chargeback by Vendor.

Store Fee: Vender will pay to Dealer a fee equal to *** for each Selected Dealer
Store (" Store Fee") that activates and implements the "dealer Market Maker
Campaign" identified on Exhibit B attached hereto, which includes premiere
product/service positioning, advertising, and sales training related to selling
Vendor service. The Store Fee will be payable within *** days of such Selected
Dealer Store being activated and selling Services as provided herein.

      If the average annual gross Activations per store per week, as measured on
      *** for the immediately preceding ***, is below *** then all future annual
      store payments will change according to the following schedule:

<TABLE>
<CAPTION>
 Ads/Store/week       New annual store fee
------------------    ---------------------
<S>                   <C>
     ***                       ***
</TABLE>

      Only the gross add data for stores open more than *** will be included in
      the average calculation. In addition, the average calculation will exclude
      any day in which Vendor's order entry and billing system is available to
      Activate Members for less than *** store hours. "Store hours", means the
      *** period during which a Selected Dealer Store is open for business to
      the general public. The gross add data will be included regardless of
      excluded days caused by system unavailability.

Infrastructure Fee: Vendor will pay to Dealer the total amount of *** to be used
solely in connection with fulfillment of Dealer's obligations under this
Addendum the Infrastructure Fee will be paid in three (3) equal payments. The
first payment will be made within thirty (30) days of mutual execution of this
Addendum; the second payment will be made on *** and the third payment will be
made on *** Vendor's obligation to make either of the second or third payments
will be conditioned on the continuing effectiveness of this Addendum.

2.4 ADDITIONAL COMPENSATION OPPORTUNITIES

The parties will use commercially reasonable efforts to identify and implement
additional commission, bonus and related compensation opportunities for Dealer
with the intent to reward top performing Selected Dealer Stores and make
available additional marketing funds in connection with this Addendum. Special
marketing programs and special compensation arrangements must be agreed to in
writing and signed by authorized representatives of both parties.

      Preferred method of payment is via wire sent to the bank account below:

      Name on Bank Account = Best Buy Co., Inc.
      US Bank
      101 E. Fifth Street
      St. Paul, MN. 55101

      Best Buy Co., Inc.
      Acct#   ***
      ABA#  ***

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<PAGE>

                                    EXHIBIT D
                             VENDOR BRAND GUIDELINES
                                 (SEE ATTACHED)

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<PAGE>

                                  CLEARWIRE(R)
                               wireless broadband

                                    EXHIBIT D
                          SUBSCRIPTION SERVICE ADDENDUM
                             VENDOR BRAND GUIDELINES

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                        1
<PAGE>

ADVERTISING AND MARKETING REQUIREMENTS

For all advertising and marketing Dealer will comply with Clearwire's
requirements and the terms, conditions and Standards set forth in this Exhibit.
Notwithstanding anything to the contrary herein, Dealer will be responsible for
ensuring that its advertising and marketing complies with all applicable laws,
rules and regulations.

- All claims in any advertising or marketing regarding Clearwire's products
and/or Services must be truthful, in good taste and consistent with Clearwire's
brand, as determined by Clearwire. Any false or misleading advertising or
advertising that is not in good taste or is inconsistent with the Clearwire
brand, as determined by Clearwire, may be reported to Clearwire's legal
department for possible action.

- Advertising that contains any claims (express or implied) must have supporting
documentation that substantiates such claims, THESE INCLUDE CLAIMS SUCH AS
CLAIMS ABOUT THE PRODUCT, CLEARWIRE, OR THE RETAILER.

- Advertised rate plans must be Clearwire's approved, current retail pricing.
Special rate plans, other rate plans and/or promotional pricing plans are NOT to
be quoted or referenced in any advertisement under any circumstances unless the
advertising is placed in a business specific circular and is approved by
Clearwire in writing and in advance. Each price listed must include disclaimers
or explanations that clearly and conspicuously state what the price represents,
such as invoice price, rebate, final price, etc.

- All advertising must clearly and conspicuously state that "certain other
restrictions apply."

CLEARWIRE DOES NOT PROVIDE LEGAL ADVICE ABOUT ADVERTISING REQUIREMENTS.
REPRESENTATIVE SHOULD CONSULT ITS OWN LEGAL COUNSEL REGARDING COMPLIANCE WITH
THESE GUIDELINES AND APPLICABLE LAW.

IF ANY FINES OR PENALTIES ARE IMPOSED ON CLEARWIRE DUE TO REPRESENTATIVE'S
FAILURE TO ABIDE BY APPLICABLE LAW, REPRESENTATIVE SHALL IMMEDIATELY PAY TO
CLEARWIRE THE AMOUNT OF THE FINE(S) OR PENALTIES AND ALL REASONABLE ATTORNEYS'
FEES AND COSTS INCURRED BY CLEARWIRE IN CONNECTION WITH SUCH FINE(S) OR
PENALTIES. IF REPRESENTATIVE FAILS TO REIMBURSE CLEARWIRE THE AMOUNT OF SUCH
FINE(S) OR PENALTIES AND ALL REASONABLE ATTORNEYS' FEES AND COSTS INCURRED BY
CLEARWIRE IN CONNECTION WITH SUCH FINE(S) OR PENALTIES, CLEARWIRE SHALL HAVE THE
RIGHT TO DEDUCT SUCH AMOUNT FROM ANY OTHER PAYMENT DUE REPRESENTATIVE UNDER THE
AUTHORIZED REPRESENTATIVE AGREEMENT, THESE GUIDELINES OR OTHERWISE.

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                        2
<PAGE>

CLEARWIRE NATIONAL BRAND STANDARDS

All advertising and marketing incorporating the Clearwire brand name and/or
Clearwire Marks (as defined in Subscription Service Agreement), or other
representative indicator must be submitted to Clearwire for written approval
prior to being produced, published or aired, regardless of whether such
advertising or marketing is eligible for any other Clearwire-sponsored program.
This includes, for example, business cards, stationery, and location signs. All
use of Marks must comply with these Standards, including the requirements as
described under Logo Standards below. Representative must use camera-ready
artwork, as provided by Clearwire.

USE OF THE CLEARWIRE MARKS

The following guidelines explain how Dealer will use the Clearwire Marks in
their marketing and promotional materials. All usage of the Clearwire signature
(logo, logo-type, broadband wireless services) must be authorized by Clearwire
prior to any use at all times and must comply with all of the Clearwire graphic
standards and give Clearwire control over all uses of its name and Marks.
Clearwire names and Marks must be used by Representative only in conjunction
with the sale of authorized Clearwire Services. Clearwire at all times reserves
the unilateral right to modify or alter the Marks or establish and enforce such
quality standards and additional terms and conditions concerning the use of the
Marks as it deems necessary.

The CAR Logo is a graphical element and can be used in either a horizontal or a
vertical format.

See examples below.

Typeface for "Authorized Representative" is Gotham.

CLEAR SPACE REQUIREMENTS

Dealer will make commercially reasonable efforts to incorporate the minimum
clear space (i.e., the clear area around the logo) is equal to the height of the
letter "1" in the Clearwire Logo.

SIZE REQUIREMENTS

a. Vertical Logo  ***
b. Horizontal Logo  ***

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       3
<PAGE>

APPROVED COLOR PALETTE FOR AUTHORIZED REPRESENTATIVE LOGO

The color palette is consistent with the Clearwire color palette.

The CAR Logo can be printed in color or reversed out of a colored background
(only the specific color palette blocks). The preferred standard is placement of
the logo on a white background, using the standard logo color palette.

CLEARWIRE GREEN

***(printed on coated stock)
***(printed on uncoated stock)

CLEARWIRE BLUE

*** (printed on coated stock)
*** (printed on uncoated stock)

CLEARWIRE GRAY

(This color should only be used when silver is not available.)

*** (printed on coated stock)
*** (printed on uncoated stock)

PRIMARY (AND PREFERRED) COLOR USAGE:

Clearwire green, Clearwire blue and Clearwire gray

Use this application when the logo appears against white.

SECONDARY COLOR USAGE:

Black (screens of)

Use this application if you are printing in black and white (no color).

COLORED BACKGROUND USAGE:

There are four colored background options on which to use the Logo. The Logo
color compliments the specific color background and is reversed out of the
background.

The Clearwire Logo should ONLY appear in the approved Logo colors.

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       4
<PAGE>

EXAMPLES OF CLEARWIRE AUTHORIZED REPRESENTATIVE LOGO AND PROPER USAGE:

CLEARWIRE AUTHORIZED
REPRESENTATIVE LOGO.

                                [CLEARWIRE LOGO]
                                   Full Color

                                [CLEARWIRE LOGO]
                                 Black & White

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       5
<PAGE>

CLEARWIRE AUTHORIZED
REPRESENTATIVE LOGO.

Minimum size for printing

                                [CLEARWIRE LOGO]

                               Vertical Signature

                                [CLEARWIRE LOGO]

                              Horizontal Signature

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

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                                       6
<PAGE>

CLEARWIRE AUTHORIZED
REPRESENTATIVE LOGO
MINIMUM AREA. CLEARSPACE.

The minimum clear area around the logo is equal to the height of the letter "I"
in the Clearwire logo.

                                [CLEARWIRE LOGO]
                               Vertical Signature

                                [CLEARWIRE LOGO]
                              Horizontal Signature

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       7
<PAGE>

CLEARWIRE LOGO AND TAGLINE.

                                [CLEARWIRE LOGO]
                                     Color

                                [CLEARWIRE LOGO]
                                 Black & White

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       8
<PAGE>

CLEARWIRE COLOR PALETTE.

<TABLE>
<CAPTION>
                    Coated      Uncoated       CMYK        RGB
                    ------      --------      -----       -----
<S>                 <C>         <C>           <C>         <C>
clearwire green     ***         ***           ***         ***
clearwire blue      ***         ***           ***         ***
clearwire gray      ***         ***           ***         ***
</TABLE>

Coated and Uncoated refers to the printing paper surface. CMYK is typically used
when creating color with 4-color process ink. RGB refers to color builds for
monitor-viewing only.

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                        9
<PAGE>

CLEARWIRE
WIRELESS BROADBAND

WEB-SAFE IDENTITY COLORS

PMS              WEB
***              ***

PMS              WEB
***              ***

PMS              WEB
***              ***

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       10
<PAGE>

CLEARWIRE AUTHORIZED
REPRESENTATIVE LOGO.

Logo reversed out of a color

                                [CLEARWIRE LOGO]

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       11
<PAGE>

CLEARWIRE BRAND STANDARDS

A. CLEARWIRE BRAND LOGO

The Clearwire Brand logo ("Logo") is a graphical element and must be used with
the tagline. The Logo may be produced in full color or in black and white. The
name "clearwire" is always written as one word and lower case, non-italicized,
and accompanied by its copyright registration symbol ((R)). See samples in Logo
Standards section.

B. LOGO TAGLINE USAGE

The Clearwire Brand logo and tagline are considered a single graphical element
The following tagline should always be used with the Logo.

WIRELESS BROADBAND

Typefaces: Gotham Clearwire Medium and Gotham Clearwire Bold

SIZE REQUIREMENTS

a. Vertical Logo   ***
b. Horizontal Logo ***

CLEAR SPACE REQUIREMENTS

Dealer will make commercially reasonable efforts to incorporate the minimum
clear space (i.e., the clear area around the logo) is equal to the height of the
letter "I" in the Clearwire Logo.

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       12
<PAGE>

CLEARWIRE LOGO AND TAGLINE.

                                [CLEARWIRE LOGO]
                                     Color

                                [CLEARWIRE LOGO]
                                 Black & White

Proprietary and confidential information of Clearwire. Not for use by any third
party, or disclosure to any third party, other than Clearwire and its
affiliates, and Clearwire's Authorized Representatives, except with Clearwire's
written approval.

                                       13
<PAGE>

                                   EXHIBIT E
                          DEALER MARKETING GUIDELINES

               See Dealer Extranet Site www.extendingthereach.com

Subscription Service Addendum Final 100305

                                 Page 16 of 19

<PAGE>

                                   EXHIBIT F
                      VENDOR SET-UP AND REPORTING PROCESSES

VENDOR SET-UP AND PROCESSING:

Dealer has instituted certain interface requirements between itself and its
vendor partners to more effectively manage the process of doing business
together.

NEW VENDOR SET-UP GUIDE: Vendor and Dealer have developed mutually agreed
processes and requirements for the sign-up and fulfillment of new customers, as
more fully described in attached Schedule 1 and as may be updated and modified
by written agreement of the Parties from time to time.

BACK-END/FRONT-END SYSTEMS: Vendor will, within *** days of the effective date
of this Addendum, integrate its automated order entry and fulfillment software
and other systems related to the Activation of the Services ("Vendor OSS
System") into Dealer's existing back-end and front-end systems as necessary to
the efficient performance of the Parties under this Addendum. This will include
but not be limited to providing electronic files to transfer details about
Dealer's customers in accordance with the Dealer's system specifications. Member
activation, installation, and cancellation files will be sent on a daily basis
and payment files in conjunction with issuance of monthly payment.

REPORTING:

1)   RECORDS. Vendor shall on a [***] provide to Dealer and its designee an
     electronic accounting and reconciliation of all Activations and other
     reports or information regarding the Services as may be reasonably
     requested by Dealer.

2)   REPORTS TO BE JOINTLY DEVELOPED. The Parties shall work together to program
     and exchange the following information:

     a)   Intent to Activate -- This will contain all of the Member Activations
          from all Selected Dealer Stores for a particular date. This file will
          be sent nightly.

     b)   Activations -- This file lists all Members that have Activated a
          Service with Vendor in a given day. This file is sent from Vendor once
          a day.

     c)   Cancellations -- This file contains a list of all Members who
          terminated Service by calling or otherwise contacting the Vendor. This
          will be sent nightly from Vendor to Dealer.

     d)   If requested by Vendor, Dealer has the ability to capture signatures
          and send that data as part of the sales record collected at the front
          lanes.

3)   Vendor will provide a status for all Activations to Dealer (via ESC File
     transfer) within *** of the order being installed or
     cancelled.

4)   Orders status responses shall follow the below example:

<TABLE>
<CAPTION>
% "Statuses" after 30 days    % "Statused" after 60 days    % "Statused" after 90 days
--------------------------    --------------------------    --------------------------
<S>                           <C>                           <C>
            60%                           85%                           100%
</TABLE>

PAYMENT FILE

The payment file is what Dealer uses to reconcile the scheduled accounts. This
payment file should match the physical payment amount sent to Dealer from
Vendor. The file will contain the detailed account information (including the
unique identifier) so matching can take place in the ESC system.

Subscription Service Addendum Final 100305

[*** Confidential Treatment Requested]

                                 Page 17 of 19

<PAGE>

Monthly payment files are acceptable and details of when during the month the
payment file is sent are determined between Dealer and Vendor.

CHARGEBACK FILE

The chargeback file is only used if Vendor has paid Dealer for a Member where a
chargeback is due under the terms of the Agreement. The chargeback file is used
to recover payment from Dealer to Vendor for those Members.

This file is seldom used, however where it is applicable, a monthly file
transfer is acceptable.

The specific details of these files are presented in the New Vendor Setup Guide
and Dealer's IT and Accounting staff will work with Vendor's IT and Accounting
staff for specific formats and content. In all files, Member account level
content is required. This level of content helps Dealer and Vendor accurately
track the proper receivables scheduled for each Member.

Subscription Service Addendum Final 100305

                                 Page l8 of l9
<PAGE>

                                   SCHEDULE 1
                                       TO
                                    EXHIBIT F

                                       ***

<PAGE>

                                       ***

<PAGE>

                                       ***

<PAGE>

                                       ***

<PAGE>

                                       ***

<PAGE>

                                       ***

<PAGE>

                                       ***

<PAGE>

                                    EXHIBIT G
                        SERVICE LEVEL AGREEMENTS (SLA's)

1.    ACCURACY OF QUALIFICATION DATA -Vendor's loop qualification tool will be
      as accurate for Dealer as it is for any Dealer Competitor. Vendor will
      make commercially reasonable efforts to minimize the number of false
      positives and negatives reported via the loop qualification tool.

2.    VENDOR SYSTEM UPTIME -Vendor will make commercially reasonable efforts to
      ensure the OSS System will be online and available to the Selected Dealer
      Stores at a level equal to that of any Dealer Competitor.

3.    VENDOR, OR THIRD PARTY INSTALLATION VENDOR, WILL SETUP AND ENABLE DELIVERY
      OF THE SERVICES to Members on the same or similar time intervals as that
      provided to similarly situated customers from any Dealer Competitor.

SLAs

1.    DEALER SERVICE LEVEL REQUIREMENTS

      a.    OSS System production environment available *** of retail hours
            (7 am - 12 am for each time zone of represented Selected Dealer
            Stores), 7 days/week 52 weeks/year

      b.    OSS System response times of *** or less for *** of the OSS System
            requests.

2.    VENDOR SYSTEM MAINTENANCE

      a.    Vendor will provide specific maintenance windows that align with
            retail hours of Selected Dealer Stores (M-F 12 am - 5 am CST/CDT)

      b.    Vendor will provide 60 days advance notice for non critical
            maintenance or OSS System changes that Vendor could reasonably
            anticipate to result in OSS System downtime. This includes changes
            that would affect Dealer partner such as G2B or GetConnected
            ("Dealer's Partners").

      c.    Vendor will not release any updates or changes to its OSS System
            production environment as it affects Best Buy web service and Dealer
            Partners during the Dealer Holiday Retail Freeze (11/1-1/18)

3.    VENDOR PRODUCTION PROBLEMS

      a.    Vendor will promptly notify Dealer with any reportable OSS System
            downtime information including ETS for resolution.

      b.    Vendor will resolve all critical OSS System production problems
            within *** of Vendor's discovery of such problem during retail
            business hours or within *** during non-retail hours.

      c.    Vendor will provide a single point of contact and an escalation path
            for all OSS System production issues.

4.    TESTING AND QUALITY ASSURANCE

      a.    Vendor agrees to provide a workable, consistently available,
            production simulated environment in which Dealer or Dealer's
            Partners can test against. This QA environment should be available
            *** of the time during Vendor's normal business hours.

      b.    Vendor will provide Dealer with a full set of valid test data (e.g.
            address, phone numbers, credit card numbers) that can be used in the
            simulated environment to perform system and quality assurance
            testing prior to OSS System production launches. Sufficient data is
            necessary to support all potential production scenarios.

5.    CONTENT MANAGEMENT

      a.    Vendor will provide updates to existing marketing plans or
            promotions to Dealer 30 day's prior written notice to being
            implemented.

      b.    Vendor will provide all plan and promotional data presented to
            Members through a Dealer Partner service Vendor website or sales
            tool.

Subscription Service Addendum Final 100305

                                  Page 19 of 19<PAGE>
                                                                   Exhibit 10.41

                             CO-MARKETING AGREEMENT

THIS AGREEMENT ("Agreement") is made this 14th day of September, 2006 (the
"Effective Date") by and between CIRCUIT CITY STORES, INC. ("Circuit City") a
Virginia corporation, with a principal place of business at 9950 Mayland Drive,
Richmond, Virginia 23233, and CLEARWIRE, US, LLC, ("Clearwire") a Nevada limited
liability company. Clearwire and Circuit City are hereinafter referred to as
"Party" or "Parties" as the context may require.

                                    RECITALS

WHEREAS, Clearwire is an Internet services provider;

WHEREAS, Circuit City, either directly or through its Affiliates, operates
retail stores and the Circuit City Website which offer, among other things,
computer, electronics, communication and data products and services to the
general public; and

WHEREAS, Circuit City and Clearwire desire for Circuit City to market, promote,
sell and solicit orders for Clearwire Internet and Internet-based services
through the Stores mutually selected by Circuit City and Clearwire and via the
Circuit City Website, subject to the terms and conditions of this Agreement;

NOW, THEREFORE, in consideration of the mutual promises and covenants set forth
below, the receipt and sufficiency of which is hereby acknowledged, the Parties
hereto agree as follows:

1.   DEFINITIONS.

     1.1  "Affiliate(s)" means an entity that is directly or indirectly owned or
          controlled, is under the common ownership or control with, or is owned
          or controlled by the entity with which it is affiliated.

     1.2  "Agreement" means this Agreement, and its Attachments and Exhibits,
          which are attached hereto and incorporated fully herein.

     1.3  "Bounty" means the amount that Clearwire shall pay Circuit City for
          each Qualified Subscriber generated by Circuit City's promotional
          efforts hereunder as specifically set forth in Exhibit B attached
          hereto.

     1.4  "Circuit City Website" means www.circuitcity.com.

     1.5  "Intellectual Property" shall mean all intellectual property rights
          world wide, including copyrights, patents, trademarks, service marks,
          trade names, and trade secrets, and rights of personality and
          likeness, and all similar rights whether arising by operation of law,
          contract, license or otherwise.

     1.6  "Marks" means all domain names, trademarks, trade names, service
          marks, logos and slogans associated with a Party's or that Party's
          third party licensors' products or services in Exhibit C for Clearwire
          and Exhibit D for Circuit City.

     1.7  "Promotional Materials" means advertising and other promotional
          communications, in any media, directed at potential Subscribers, which
          describes the Services.

     1.8  "Promotional Offer" means a special offer to potential Subscribers in
          terms of pricing or free service for a specified period of time.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page l

<PAGE>

     1.9  "Qualified Subscriber" means a Subscriber who, as a result of Circuit
          City's efforts satisfies the Clearwire pre-qualification process,
          subscribes to the Services, and makes the initial monthly payment for
          such Service and remains paying for [***] days, excluding promotions.

     1.10 "Services" means the wireless broadband and related Internet access
          and services where Clearwire has contractual arrangements for
          provisioning.

     1.11 "Stores" means Circuit City's retail "super stores" located within the
          United States.

     1.12 "Subscriber" shall mean an individual or entity that orders any
          offered Service by means of Circuit City under this Agreement.

     1.13 "Subscriber Information" means personally identifying information
          about Subscribers or potential Subscribers, such as the names,
          addresses, usernames, passwords, e-mail addresses of and financial
          information related to any Subscribers.

2.   OBLIGATIONS OF THE PARTIES.

     2.1  The obligations and duties of Clearwire and Circuit City with respect
          to the establishment and administration of the various obligations,
          respectively, are stated in this Agreement

     2.2  Each Party shall assign an account manager to coordinate the
          promotional programs with the other Party. If a Party changes the
          person assigned as the account manager, such Party shall notify the
          other Party in writing of the name and contact information of such new
          account manager.

     2.3  Subject to the terms and restrictions set forth in this Agreement,
          Clearwire hereby grants Circuit City limited rights to market and
          promote the Services described in the manner set forth herein. Circuit
          City hereby accepts the foregoing and agrees to market and promote the
          Services in the manner set forth herein.

     2.4  Clearwire shall be solely responsible for providing Circuit City with
          information relating to the Services and any Promotional Offers,
          including the content of Promotional Materials. Circuit City agrees to
          use such information solely in connection with its obligations under
          this Agreement.

     2.5  Clearwire shall at all times be solely responsible for providing and
          maintaining the Services including, but not limited to, billing and
          customer service. The Services promoted hereunder shall be comparable
          in features, functionality and pricing to the Services offered
          directly by Clearwire through its own sales channel or other
          retailers. Clearwire, in its sole discretion, reserves the right to
          accept, or reject, any potential Subscriber. Additionally, Clearwire
          and each Subscriber shall have the right, at any time, to terminate
          the Service provided to a Subscriber in accordance with the terms and
          conditions of the then current Clearwire Internet Services Agreement
          and related policies.

     2.6  Circuit City may not make any representations or warranties with
          respect to the Services other than those authorized in writing by
          Clearwire.

3.   TERM AND TERMINATION.

     3.1  Term. The term of this Agreement shall run from the Effective Date for
          a term of two (2) years (the "Initial Term"), unless otherwise
          terminated in accordance with Section 3.2 (Termination) below.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

[*** Confidential Treatment Requested]

                                                                          Page 2
<PAGE>

     3.2  Termination.

          3.2.1 During the Term, either Party may terminate this Agreement: (a)
               immediately upon written notice to the other Party if the other
               Party files a petition for bankruptcy or insolvency or has such a
               petition filed against it that is not dismissed within ninety
               (90) days, makes a general assignment for the benefit of
               creditors, becomes generally unable to pay its debts as they
               become due, suffers or permits the appointment of a receiver,
               trustee, or custodian for its business or any substantial part of
               its assets, or becomes subject to any proceeding under any
               statute of any governing authority relating to insolvency or the
               protection of rights of creditors, and is thereby rendered
               substantially unable to perform its material obligations
               hereunder; or (b) in the event the other Party is in material
               breach, or otherwise is materially in default of any other term,
               condition or provision of this Agreement, and such breach or
               default continues for thirty (30) days after the non-breaching
               Party gives written notice to the breaching Party thereof and
               such party fails to cure such breach or default, then, in
               addition to all other rights and remedies provided hereunder or
               at law or equity, the non-breaching party shall have the right to
               terminate this Agreement in whole or in part without any
               liability to the breaching party whatsoever, other than monies
               not otherwise in dispute and owed to the breaching party for
               services rendered during and under the Term of this Agreement.
               Upon termination of this Agreement for any reason Circuit City
               shall return all Cleanwire devices provided pursuant to this
               Agreement within ninety (90) days of the end of the Term.

          3.2.2 Notwithstanding anything to the contrary contained herein, after
               the first year of the Initial Term either Party shall have the
               right to terminate this Agreement at any time without cause, upon
               ninety (90) days' prior written notice.

          3.2.3 Upon the expiration or termination of this Agreement for any
               reason (a) all licenses granted under this Agreement shall
               immediately terminate; (b) Circuit City shall cease marketing the
               Services and shall cease distributing Promotional Materials; (c)
               the Parties shall promptly cease all use of each other's Marks
               that were licensed by this Agreement (as opposed to Marks that
               were licensed pursuant to another agreement); (d) all payments
               that have accrued prior to the termination or expiration shall be
               payable in full on the later of (i) ninety (90) days following
               the termination or expiration, or (ii) the date on which the
               payment would be otherwise due; and (f) all rights herein granted
               shall revert to the granting Party. Except for materials kept for
               archival purposes, each Party shall promptly return to the other
               Party any and all documents or other media embodying any use of
               the other Parry's Intellectual Property (including specifically,
               but not limited to, any copies of Promotional Materials that have
               not been distributed at the time of expiration or termination);
               provided, that if this Agreement is terminated because of an
               event set forth in 3.2.1 above, the Party responsible for the
               event (e.g., the breaching Party) shall bear all costs associated
               with the return of the Parties' respective Intellectual Property.
               Materials retained for archival purposes may not be used for any
               commercial purpose or distributed and shall be treated as
               Confidential Information. Clearwire shall have payment
               obligations (as set forth herein) in connection with Subscribers
               who sign up for the Service prior to or on the date of
               termination or expiration of this Agreement.

          3.2.4 All obligations of the Parties under this Agreement which, by
               their nature, would continue beyond termination, cancellation or
               expiration of this Agreement, including by way of illustration
               and not limitation those clauses relating to the obligations of
               Parties under Sections 1, 2.5, 3, 10, 11, 13 and 15 through 25
               shall survive such termination, cancellation or expiration.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 3

<PAGE>

4.   INTELLECTUAL PROPERTY RIGHTS.

     4.1  Each Party acknowledges that the other Party owns and retains all
          rights to Intellectual Property associated with such other Party's
          products and services ("Intellectual Property Rights") and agrees that
          it will not at any time during or after the Term of this Agreement
          assert or claim any interest in or do anything that may adversely
          affect the validity of any Intellectual Property Rights of the other
          Party (including without limitation any act or assistance to any act
          which may infringe or lead to the infringement of any Intellectual
          Property Rights of the other Party). Each Party agrees (i) not to
          knowingly remove or destroy any proprietary markings of the other
          Party contained in product, service, marketing or sales materials
          produced pursuant to this Agreement and (ii) to include such
          proprietary markings where appropriate when referring to the other
          Party's products or services in product, service, marketing or sales
          materials produced pursuant to this Agreement

     4.2  Clearwire Licensed Marks.

          4.2.1 Subject to the terms and conditions specified in this Agreement,
               Clearwire hereby grants to Circuit City (and Circuit City's
               Affiliates), for the term of this Agreement, a non-exclusive,
               non-transferable license to use the Clearwire licensed marks set
               forth in EXHIBIT C ("the Clearwire Licensed Marks") exactly as
               depicted in the graphic configuration or as subsequently modified
               by Clearwire. Clearwire may, in its sole discretion, at any time
               add to or delete from the Clearwire Licensed Marks and change the
               graphic configuration of the Clearwire Licensed Marks.

          4.2.2 Circuit City agrees that the style of use of the Clearwire
               Licensed Marks shall be in the form and style conforming to the
               trademark usage guidelines as provided to Circuit City in
               writing. Circuit City shall not use any of the Clearwire Licensed
               Marks as part of its corporate name, trade name, business name or
               Internet domain name.

          4.2.3 Circuit City shall submit to Clearwire for review and approval,
               at least ten (10) business days prior to proposed use, any web
               pages or other Internet locations, and all marketing,
               advertising, press releases or other Promotional Materials in
               which the Clearwire Licensed Marks are used. Clearwire shall
               approve or disapprove such materials at least five (5) business
               days after its receipt of such materials; Clearwire will not
               unreasonably withhold or delay the granting of its approval
               thereof. Circuit City shall not publish, distribute or use any
               such web pages or other Internet locations, or any such
               marketing, advertising, press releases or other Promotional
               Materials in which the Clearwire Licensed Marks are used, without
               the prior written approval of Clearwire.

          4.2.4 Notwithstanding the foregoing, Circuit City may designate at the
               time of submission that the requested approval is for
               multiple/repetitive, identical uses on the same medium. Circuit
               City may request approval for such multiple/repetitive, identical
               use through the end of the Initial Term or any Renewal Term of
               this Agreement, or six (6) months, whichever is less. Such
               multiple/repetitive, identical use shall be in accordance with
               this Agreement and shall be subject to revocation by Clearwire
               upon written notice to Circuit City.

          4.2.5 Circuit City further acknowledges and agrees that all use of the
               Clearwire Licensed Marks by Circuit City and all goodwill
               developed therefrom shall inure to the benefit of and be on
               behalf of Clearwire except for the goodwill associated or derived
               from the Circuit City Licensed Marks.

          42.6 Circuit City agrees that nothing in this Agreement shall give
               Circuit City any right, title or interest in or to the Clearwire
               Licensed Marks other than the right to use the Clearwire Licensed
               Marks in the manner contemplated by this Agreement, and only for
               so long a

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 4

<PAGE>

               this Agreement is in force or as otherwise permitted under this
               Agreement (unless such Clearwire Licensed Marks are licensed
               pursuant to a separate agreement).

          4.2.7 Infringement.

               4.2.7.1 Circuit City agrees to use commercially reasonable
                    efforts to notify Clearwire promptly of any unauthorized use
                    of the Clearwire Licensed Marks by others, to the extent
                    Circuit City has actual notice of such use. Clearwire and
                    its parent and affiliated companies shall have the sole
                    right to engage in infringement or unfair competition
                    proceedings involving the Clearwire Licensed Marks.

               4.2.7.2 Any recovery obtained in connection with or as a result
                    of any infringement action contemplated under this section,
                    whether by settlement or otherwise, shall be retained by
                    Clearwire.

     4.3  Circuit City Licensed Marks.

          4.3.1 Subject to the terms and conditions specified in this Agreement,
               Circuit City hereby grants to Clearwire (and Clearwire's
               Affiliates), for the terra of this Agreement, a non-exclusive,
               non-transferable license to use the Circuit City licensed marks
               set forth in EXHIBIT D ("the Circuit City Licensed Marks")
               exactly as depicted in the graphic configuration or as
               subsequently modified by Circuit City. Circuit City may in its
               sole discretion at any time add to or delete from the Circuit
               City Licensed Marks and change the graphic configuration of the
               Circuit City Licensed Marks.

          4.3.2 Clearwire agrees that the style of use of the Circuit City
               Licensed Marks shall be in the form and style conforming to the
               trademark usage guidelines and brand identity standards, as
               provided to Clearwire in writing. Clearwire shall not use any of
               the Circuit City Licensed Marks as part of its corporate name,
               trade name, business name or Internet domain name.

          4.3.3 Clearwire shall submit to Circuit City for review and approval,
               at least ten (10) business days prior to proposed use, any web
               pages or other Internet locations, and all marketing,
               advertising, press releases or other Promotional Materials in
               which the Circuit City Licensed Marks are used. Circuit City
               shall approve or disapprove such materials at least five (5)
               business days after its receipt of such materials; Circuit City
               will not unreasonably withhold or delay the granting of its
               approval thereof. Clearwire shall not publish, distribute or use
               any such web pages or other Internet locations, or any such
               marketing, advertising, press releases or other Promotional
               Materials in which the Circuit City Licensed Marks are used,
               without the prior written approval of Circuit City.

          4.3.4 Notwithstanding the foregoing, Clearwire may designate at the
               time of submission that the requested approval is for
               multiple/repetitive, identical uses on the same medium. Clearwire
               may request approval for such multiple/repetitive, identical use
               through the end of the Initial Term or any Renewal Term of this
               Agreement, or six (6) months, whichever is less. Such
               multiple/repetitive, identical use shall be in accordance with
               this Agreement and shall be subject to revocation by Circuit City
               upon written notice to Clearwire.

          4.3.5 Clearwire further acknowledges and agrees that all use of the
               Circuit City Licensed Marks by Clearwire and all goodwill
               developed therefrom shall inure to the benefit of and be on
               behalf of CC West Coast, except for goodwill associated or
               derived from the Clearwire Licensed Marks.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 5

<PAGE>

          4.3.6 Clearwire agrees that nothing in this Agreement shall give
               Clearwire any right, title or interest in or to the Circuit City
               Licensed Marks other than the right to use the Circuit City
               Licensed Marks in the manner contemplated by this Agreement, and
               only for so long as this Agreement is in force or as otherwise
               permitted under this Agreement (unless such Circuit City Licensed
               Marks are licensed pursuant to a separate agreement).

          4.3.7 Infringement.

               4.3.7.1 Clearwire agrees to use commercially reasonable efforts
                    to notify Circuit City promptly of any unauthorized use of
                    the Circuit City Licensed Marks by others, to the extent
                    Clearwire has actual notice of such use. Circuit City and
                    its parent and affiliated companies shall have the sole
                    right to engage in infringement or unfair competition
                    proceedings involving the Circuit City Licensed Marks.

               4.3.7.2 Any recovery obtained in connection with or as a result
                    of any infringement action contemplated under this section,
                    whether by settlement or otherwise, shall be retained by
                    Circuit City.

5.   JOINT MARKETING PROGRAMS. Upon execution of this Agreement, the Parties
     will develop and implement the Joint Marketing Program set forth on EXHIBIT
     A. All aspects of the Joint Marketing Program will be approved by the
     Parties in writing as required by this Agreement Clearwire and Circuit City
     may work together in good faith to develop additional joint marketing
     programs.

6.   COMPENSATION. In consideration of the services to be rendered by Circuit
     City, Clearwire shall pay Circuit City the Bounty as described in EXHIBIT B
     for all Subscribers. Bounties shall be paid to Circuit City within [***]
     calendar days following the end of the month in which the Subscriber signed
     up for the Services. For each Subscriber that becomes a Qualified
     Subscriber, the corresponding Bounty shall become vested in Circuit City
     [***] days from Subscriber Activation. For each Subscriber that fails to
     become a Qualified Subscriber and for which Clearwire has already made the
     corresponding Bounty payments, Clearwire shall be entitled to deduct the
     prior Bounty and payments from future payments ("Deduction(s)") as more
     fully set forth on EXHIBIT B.

7.   REPORTS.

     7.1  Clearwire shall provide Circuit City with a monthly written report
          setting forth the monthly number of new Subscribers and the monthly
          number of Deductions, if any, thirty (30) calendar days following the
          end of each calendar month. Notwithstanding the foregoing, no report
          shall be issued when there is no underlying activity to report.

     7.2  Clearwire and Circuit City shall also use the Reconciliation Document,
          attached hereto as EXHIBIT E, for purposes of defining the interface
          requirements and expected results for transaction processing of
          activity, invoicing and payments between the Parties.

8.   PUBLICITY. Neither Party shall issue a press release or similar public
     announcement of any kind regarding the Parties' relationship established
     hereunder without the prior written approval of the other Party. Other than
     expressly set forth herein, neither Party shall use publicly the other
     Party's name or refer to the other Party in any way in or with the media,
     including, but not limited to, in advertising, without the other Party's
     prior written consent as required herein; provided, however, that either
     Party may make disclosures or filings required to comply with applicable
     laws, including filings with regulatory agencies, such as the United States
     Securities and Exchange Commission, or disclosures or filings required to
     comply with the rules of a national securities exchange or automated
     quotations systems such as the National Association of Securities Dealer's
     Automated Quotations. A VIOLATION OF THIS PROVISION SHALL CONSTITUTE A
     MATERIAL BREACH OF THIS AGREEMENT.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

[*** Confidential Treatment Requested]

                                                                          Page 6

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9.   REPRESENTATIONS AND WARRANTIES.

     9.1  Circuit City represents and warrants that (a) it has the right, power
          and authority to enter into this Agreement and fully perform its
          obligations hereunder; (b) this Agreement does not and will not
          conflict with any agreement between it and any other party; (c) it has
          all necessary federal, state and local authorizations, to operate and
          otherwise perform its obligations under this Agreement and will be in
          compliance with all applicable laws and regulations governing such
          performance; and (d) Circuit City has the full and exclusive right to
          grant or otherwise permit Clearwire to use the Circuit City Marks in
          accordance with the terms of this Agreement.

     9.2  Clearwire represents and warrants that (a) it has the right, power and
          authority to enter into this Agreement and fully perform its
          obligations hereunder; (b) this Agreement does not and will not
          conflict with any agreement between it and any other party; (c) it has
          all necessary federal, state and local authorizations, including
          intellectual property rights in and to the Services and to operate and
          otherwise perform its obligations under this Agreement and will be in
          compliance with all applicable laws and regulations governing such
          performance; and (d) Clearwire has the full and exclusive right to
          grant or otherwise permit Circuit City to use the Clearwire Marks.

10.  LIMITATION OF LIABILITY.

     10.1 EXCEPT AS EXPRESSLY SET FORTH IN THE AGREEMENT, NEITHER PARTY MAKES,
          AND EACH PARTY HEREBY SPECIFICALLY DISCLAIMS, ANY REPRESENTATIONS OR
          WARRANTIES RELATING TO THIS AGREEMENT OR THE PARTIES' RESPECTIVE
          SERVICES HEREUNDER, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY
          OR FITNESS FOR A PARTICULAR PURPOSE AND IMPLIED WARRANTIES ARISING
          FROM COURSE OF DEALING OR COURSE OF PERFORMANCE.

     10.2 EXCEPT FOR A PARTY'S INDEMNIFICATION OBLIGATIONS SET FORTH IN SECTION
          11 AND CONFIDENTIALITY OBLIGATIONS SET FORTH IN SECTION 13, BELOW,
          NEITHER PARTY SHALL BE LIABLE TO THE OTHER PARTY, IN WHOLE OR IN PART,
          FOR LOSS OF REVENUES, LOSS OF PROFITS, LOSS OF TIME, INCONVENIENCE,
          LOSS OF USE, OR ANY OTHER INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE, OR
          CONSEQUENTIAL LOSS OR DAMAGE ARISING OUT OF THIS AGREEMENT, OR THE USE
          OR PERFORMANCE OF THE SERVICES, IN WHOLE OR IN PART, EVEN IF ADVISED
          OF THE POSSIBILITY THEREOF, OR IF REASONABLY FORESEEABLE, WHETHER IN
          AN ACTION FOR OR ARISING OUT OF ALLEGED BREACH OF WARRANTY, ALLEGED
          BREACH OF CONTRACT, DELAY, NEGLIGENCE, STRICT TORT LIABILITY OR
          OTHERWISE. THE LIMITATIONS SET FORTH IN THIS SECTION 10 SHALL NOT
          AFFECT EITHER PARTY'S RIGHT TO SEEK INJUNCTIVE RELIEF.

11.  INDEMNIFICATION.

     11.1 In connection with Clearwire's performance under this Agreement,
          Clearwire agrees to indemnify, defend and hold harmless Circuit City,
          its Affiliates, and their respective representatives, employees,
          directors, officers, and assigns against any losses, liabilities,
          lawsuits, penalties, claims or demands (including all costs, expenses,
          and reasonable attorneys' fees on account thereof) arising out of or
          in connection with (a) any third party claims for actual or alleged
          direct infringement of a third party's intellectual property rights
          with respect to the hardware leased or provided by Clearwire under
          this Agreement where such infringement of the claim arises from the
          hardware operating alone and not in combination with any other
          hardware or software not licensed, sold or provided by Clearwire, (b)
          any third party claim arising out of the sale, resale, use or failure
          of the Services, including, but not limited to claims for injuries
          (including death) to persons or damage to real or tangible property
          that results from Clearwire's negligent or willful

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 7

<PAGE>

          acts or omissions or those of persons furnished by Clearwire, (c) any
          employee or former employee of Clearwire or any of its sublicensees or
          subcontractors for which Clearwire's or its sublicensee's or
          subcontractor's liability to such employee or former employee would
          otherwise be subject to payments under the state Worker's Compensation
          or similar laws, (d) Clearwire's actual or alleged breach of any
          applicable law, statute, order, decree or regulation in performance of
          its obligations, or (e) any third party claim based upon any marketing
          material provided by Circuit City which Clearwire materially alters
          and uses without Circuit City's prior consent in accordance with
          Section 4.3 above. Circuit City agrees to promptly notify Clearwire of
          written claims or demands made against Circuit City, which Circuit
          City has received written notice of, for which Clearwire is
          responsible hereunder. Circuit City further agrees to assist Clearwire
          in its defense of such claim, at reasonable cost to Clearwire.
          Clearwire shall bear full responsibility for the defense (including
          any settlements) of any such claim; provided however, that (i)
          Clearwire shall not have any right, without Circuit City's written
          consent, to settle any such claim if such settlement arises from or is
          part of any criminal action, suit or proceeding or contains a
          stipulation to or admission or acknowledgment of, any liability or
          wrongdoing (whether in contract, tort or otherwise) on the part of
          Circuit City, or provides for less than a full release of Circuit
          City. Circuit City shall be entitled to participate in the action with
          counsel of its choice at its own expense. Clearwire shall not be
          responsible for any claims arising under (a) and/or (e) where Circuit
          City was informed of a claim or notice of infringement and failed to
          promptly remove or cease in the distribution of the infringing
          materials.

     11.2 In connection with Circuit City's performance under this Agreement,
          Circuit City agrees to indemnify, defend and hold harmless Clearwire,
          its Affiliates, and their respective representatives, employees,
          directors, officers, and assigns against any losses, liabilities,
          lawsuits, penalties, claims or demands (including all costs, expenses,
          and reasonable attorneys' fees on account thereof) arising out of or
          in connection with (a) any third party claims for actual or alleged
          infringement of a third party's intellectual property rights, (b) any
          employee or former employee of Circuit City or any of its sublicensees
          or subcontractors for which Circuit City's or its sublicensee's or
          subcontractor's liability to such employee or former employee would
          otherwise be subject to payments under the state Worker's Compensation
          or similar laws, (c) Circuit City's actual or alleged breach of any
          applicable law, statute, order, decree or regulation in performance of
          its obligations, or (d) any third party claim based upon any marketing
          material provided by Clearwire which Circuit City materially alters
          and uses without Clearwire's prior consent in accordance with Section
          4.2 above. Clearwire agrees to promptly notify Circuit City of written
          claims or demands made against Clearwire, which Clearwire has received
          written notice of, for which Circuit City is responsible hereunder.
          Clearwire further agrees to assist Circuit City in its defense of such
          claim, at reasonable cost to Circuit City. Circuit City shall bear
          full responsibility for the defense (including any settlements) of any
          such claim; provided however, that (i) Circuit City shall keep
          Clearwire informed of, and consult with Clearwire in connection with
          the progress of such litigation or settlement; and (ii) Circuit City
          shall not have any right, without Clearwire's written consent, to
          settle any such claim if such settlement arises from or is part of any
          criminal action, suit or proceeding or contains a stipulation to or
          admission or acknowledgment of, any liability or wrongdoing (whether
          in contract, tort or otherwise) on the part of Clearwire or any
          Clearwire Affiliate, or provides for less than a full release of
          Clearwire. Clearwire shall be entitled to participate in the action
          with counsel of its choice at its own expense. Circuit City shall not
          be responsible for any claims arising under (d) where Clearwire was
          informed of a claim or notice of infringement and failed to promptly
          remove or cease in the distribution of the infringing materials

12.  INSURANCE.

     12.1 Clearwire shall maintain, during the term hereof, all insurance
          required by law and the insurance listed below. Clearwire agrees that
          Clearwire, Clearwire's insurer(s) and anyone claiming by, through,
          under or on behalf of Clearwire shall have no claim, right of action
          or right of subrogation against Circuit City or Circuit City's
          customers based on any loss or liability insurable under the foregoing
          insurance, except to the extent Circuit City has an indemnification
          obligation under Section 11.2 for

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 8

<PAGE>

          such claim, right of action or subrogation. Certificates furnished by
          Clearwire or its subcontractors shall contain a clause stating,
          "Circuit City Stores, Inc. shall be notified in writing at least
          thirty (30) days prior to cancellation of the policy."

     12.2 Clearwire shall maintain, during the Term hereof, all insurance and/or
          bonds required by law, including but not limited to:

          12.2.1 Workers Compensation insurance as required by the State(s) in
               which this Agreement is to be performed.

          12.2.2 Comprehensive or Commercial General Liability Insurance, on an
               Occurrence Basis, including by not limited to
               premises-operations, broad form property damage, contractual
               liability, independent contractors, and personal injury with
               limits of at least $2,000,000 combined single limit for each
               occurrence.

          12.2.3 Automobile Liability, Comprehensive Form with limits of at
               least $2,000,000 combined single limit for each occurrence.

     12.3 Circuit City and its subsidiaries shall be named as an additional
          insured to the liability insurance policies required under this
          Agreement and this shall be so evidenced upon the Certificate(s) of
          Insurance. Clearwire shall maintain insurance, as required by this
          Agreement, through insurance carriers which have and maintain an A.M.
          Best rating of A-VII or greater. The fulfillment of the insurance
          obligations hereunder shall not otherwise relieve Clearwire of any
          liability assumed by Clearwire hereunder or in any way modify
          Clearwire's obligations to indemnify Circuit City.

     12.4 Clearwire shall furnish, within ten (10) days of the Effective Date of
          this Agreement, certificates or adequate proof of the foregoing
          insurance.

13.  CONFIDENTIAL INFORMATION

     13.1 "Confidential Information" means any and all business, technical,
          customer or third party information (including but not limited to,
          trade secrets, marketing plans, financial data, specifications,
          drawings, sketches, models, samples, computer programs and
          documentation) provided, disclosed or made accessible by one Party
          (the "Disclosing Party") to the other (the "Receiving Party") under
          this Agreement, that is either identified as or would be reasonably
          understood to be confidential and/or proprietary. Confidential
          Information also includes (a) any Information that a Party receives,
          collects, learns of, or develops in the course of performing its
          obligations under this Agreement, including but not limited to
          prospective and actual customer's names, addresses, telephone numbers,
          email addresses, financial data, including credit card or banking
          information, and other customer information; and (b) the terms and
          conditions of this Agreement. Confidential Information does not
          include information that the Receiving Party can clearly establish by
          written evidence: (a) is or becomes known to the Receiving Party from
          a third party without an obligation to maintain its confidentiality;
          (b) is or becomes generally known to the public through no act or
          omission of the Receiving Party; or (c) is independently developed by
          the Receiving Party without the use of Confidential Information of the
          Disclosing Party. Clearwire will be the owner of any Subscriber
          Information generated by Clearwire in connection with a Subscriber's
          order for Services and such information will be deemed Clearwire
          Confidential Information for purposes of this Agreement. Circuit City
          will be the owner of any Confidential Information generated by Circuit
          City in connection with a Subscriber's order for Circuit City goods or
          services or otherwise in connection with Circuit City's performance of
          its duties and obligations hereunder and such information will be
          deemed Circuit City's Confidential Information. Any information
          obtained by both Parties shall be owned by each Party.

     13.2 Confidential Information will be deemed the exclusive property of the
          Disclosing Party. The Receiving Party will not: (a) use Confidential
          Information of the Disclosing Party for any purpose

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                          Page 9

<PAGE>

          other than the fulfillment of its obligations under this Agreement;
          (b) disclose Confidential Information of the Disclosing Party to any
          third party, without the prior written consent of the Disclosing
          Party; (c) make any copies or modifications of Confidential
          Information of the Disclosing Party without the Disclosing Party's
          prior written consent, and provided that any authorized copies or
          modifications will contain the same confidential or proprietary
          notices or legends, if any, which appear on the original; and (d)
          reveal, divulge, make known, sell, exchange, lease or in any other way
          transfer any Confidential Information to any third party.

     13.3 The Receiving Party will: (a) protect and treat all Confidential
          Information of the Disclosing Party with the same degree of care as it
          uses to protect its own Confidential Information of like importance,
          but in no event with less than reasonable care; and (b) only disclose
          Confidential Information of the Disclosing Party to its employees
          and/or agents who have a "need to know" for purposes of this
          Agreement, provided that the Receiving Party will notify and inform
          such employees and/or agents of the Receiving Party's obligations
          under this Agreement, and the Receiving Party will be responsible for
          any breach of this Agreement by its employees and/or agents.

     13.4 In the event that the Receiving Party is required to disclose
          Confidential Information of the Disclosing Party pursuant to law, the
          Receiving Party will notify the Disclosing Party of the required
          disclosure with sufficient time for the Disclosing Party to seek
          relief, will cooperate with the Disclosing Party in taking appropriate
          protective measures, and will make such disclosure in a fashion that
          maximizes protection of the Confidential Information from further
          disclosure.

     13.5 Upon expiration or termination of this Agreement, the Receiving Party
          will promptly turn over to the Disclosing Party or, at the Disclosing
          Party's direction, destroy all Confidential Information of the
          Disclosing Party, in whole or in part, in whatever format, including
          any copies.

     13.6 Each Party agrees that monetary damages for breach of its obligations
          under this Section may not be adequate and that the non-breaching
          Party will be entitled to injunctive relief with respect thereto.

14.  ASSIGNMENT. Neither party may assign or otherwise transfer any of its
     rights or obligations hereunder without the prior written consent of the
     other, which shall not be unreasonably withheld; provided, however, that
     nothing herein shall prevent either party from assigning its rights and
     obligation under this Agreement to an Affiliate, or to an entity that
     acquires all or substantially all of the assets of such party through a
     merger, consolidation, or sale, provided further that the assigning party
     provides notice of such permitted assignment as soon as commercially
     reasonable.

15.  RELATIONSHIP BETWEEN THE PARTIES. The Parties to this Agreement are
     independent Parties and nothing herein shall be construed as creating an
     employment relationship between the Parties. Neither Party is an agent,
     representative, joint venturer nor partner of the other Party and neither
     Party shall have any right, power or authority to enter into any agreement
     for or on behalf of, or incur any obligation or liability, or to otherwise
     bind, the other Party. The Agreement shall not be interpreted or construed
     to create an association, agency, joint venture or partnership between the
     Parties or to impose any liability attributable to such a relationship upon
     either Party.

16.  FORCE MAJEURE. Neither Party shall be in default or otherwise liable for
     any delay in or failure of its performance under this Agreement if such
     delay or failure arises by any reason beyond its reasonable control,
     including any act of God, any acts of the common enemy, the elements,
     earthquakes, floods, fires, epidemics, riots, failures or delay in
     transportation, electricity or communications, or any act or failure to act
     by the other Party or such other Party's employees, agents or contractors;
     provided, however, that lack of funds shall not be deemed to be a reason
     beyond a Party's reasonable control. The Parties will promptly inform and
     consult with each other as to any of the above causes which in their
     judgment may or could be the cause of a delay in the performance of this
     Agreement.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                         Page 10

<PAGE>

17.  THIRD PARTY BENEFICIARIES. The provisions of this Agreement are for the
     sole benefit of the parties hereto and this Agreement confers no rights,
     benefits or claims upon any person or entity not a party hereto. Third
     party beneficiaries do not include Clearwire Affiliates.

18.  CHOICE OF LAW. The Parties agree that the substantive laws of the State of
     New York, without reference to its principles of conflicts of laws, will be
     applied to govern, construe and enforce all of the rights and duties of the
     Parties arising from or relating in any way to the subject matter of this
     Agreement. THE PARTIES KNOWINGLY AND VOLUNTARILY WAIVE ANY RIGHT TO TRIAL
     BY JURY IN ANY JUDICIAL PROCEEDING INVOLVING ANY MATTER ARISING OUT OF, OR
     RELATED TO, THIS AGREEMENT.

19.  AUDIT RIGHTS. During the term of this Agreement and for a period of two (2)
     years following the expiration or termination of this Agreement, both
     Parties shall create and maintain sufficient books, records and accounts
     related to this Agreement according to generally accepted accounting
     practices. Each Party shall have the right, at its own expense, to inspect
     or direct an independent certified public accountant to inspect and audit
     those books and records of the other Party that are relevant to the
     determination of compensation payable hereunder, provided, however, that
     such audits will be conducted no more than once in any calendar year, upon
     not less than thirty (30) days' notice, during regular business hours, at
     mutually agreeable dates and times (not to be unreasonably withheld or
     delayed), and provided further that such accountant, if any, executes a
     confidentiality agreement reasonably satisfactory to the Party being
     audited, to protect the confidentiality of any records so audited. If the
     audit discloses a payment discrepancy or error, the Party responsible for
     correcting such error shall make any undisputed payment or remittance
     within thirty (30) business days of the generation of the audit report. In
     the event an audit discloses a payment discrepancy or error of more than
     five (5) percent of the correct amount, the Party owing such payment or
     remittance shall bear the cost of the audit.

20.  NOTICES. All notices, authorizations, and requests required or desired to
     be given or made in connection with this Agreement will be in writing,
     given by certified or registered mail (return receipt requested), or by
     nationally recognized overnight courier (charges prepaid), and addressed as
     follows (or to such other address as the Party to receive the notice or
     request so designates by notice to the other):

          To Clearwire:      Clearwire, US LLC.
                             5808 Lake Washington Blvd.
                             Suite 300
                             Kirkland, Wa, 98033

          To Circuit City:   Circuit City Stores, Inc.
                             9950 Mayland Drive
                             Richmond, Virginia 23221
                             Attn: Internet Services Buyer

                             With copies to:

                             Circuit City Stores, Inc.
                             9950 Mayland Drive
                             Richmond, Virginia 23221
                             Attn: Legal Department

          Notice shall be deemed effective upon actual delivery.

21.  SEVERABILITY. In the event that one or more of the provisions contained
     herein shall, for any reason, be held unenforceable in any respect, such
     unenforceability shall not affect any other provision of this Agreement,
     and this Agreement shall then be construed as if such unenforceable
     provision(s) did not exist.

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                         Page 11

<PAGE>

22.  WAIVER. Failure by either Party to enforce any provision of this Agreement
     shall not be deemed a waiver of future enforcement of that or any other
     provision. The waiver by a Party of any default hereunder shall not be
     deemed to be a waiver of subsequent defaults of the same or different kind.

23.  INTERPRETATION. This Agreement shall be fairly interpreted in accordance
     with its terms and without any construction in favor of or against either
     Party. The headings and captions are included for reference purposes only
     and do not affect the interpretation of the provisions hereof. The captions
     in this Agreement are for convenience of reference only and shall not limit
     or otherwise affect any of the terms or provisions hereof. Use of the words
     "herein", "hereof", "hereto" and the like in this Agreement refer to this
     Agreement as a whole and not to any particular Article, Section or
     provision of this Agreement, unless otherwise noted. When the context
     requires, the number of all words includes the singular and plural.

24.  COUNTERPARTS. This Agreement may be executed in counterparts, each of which
     shall be deemed an original and which together shall constitute one
     instrument. This Agreement may be executed by facsimile, and each facsimile
     signature shall be deemed to constitute a valid and binding signature of
     the executing party.

25.  ENTIRE AGREEMENT. This Agreement and its Attachments and Exhibits shall
     constitute the entire agreement between the Parties hereto with respect to
     the subject matter hereof and all previous agreements relating thereto
     shall be null and void unless specifically incorporated herein. This
     Agreement may not be amended, modified or rescinded except by a writing
     executed by both Parties hereto.

IN WITNESS WHEREOF, the Parties have executed this Agreement, by their
authorized representatives, as of the date written above.

CLEARWIRE, U.S., L.L.C                  CIRCUIT CITY STORES, INC.

/s/ JAMES RYDER                         /s/ Phil Schoonover
-------------------------------------   ----------------------------------------
Signature                               Signature

JAMES RYDER                             Phil Schoonover
Name                                    Name

Sr VP                                   CEO
Title                                   Title

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                         Page 12

<PAGE>

                                   EXHIBIT A

                                      [***]

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

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                                    EXHIBIT B

                              BOUNTY PAYMENT TERMS

I.   Bounty Payments

     A.   Bounty Payments. Provided Circuit City is not in breach of its
          obligations as set forth in this Agreement, Clearwire will pay Circuit
          City a one-time Bounty payment of [***] for each Qualified Subscriber
          who subscribes to the Services in accordance with the payment
          provisions set forth in Section 6.

II.  Deductions

     Circuit City's monthly compensation may be subject to Deductions by
     Clearwire for Bounties already paid to Circuit City for which the
     corresponding Subscriber does not become a Qualified Subscriber. If such
     amount cannot be deducted, Circuit City shall pay such Deduction amount in
     the form of a charge-back or refund within thirty (30) days of the date
     that Clearwire notifies Circuit City in writing that such Subscriber failed
     to become a Qualified Subscriber.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

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                                    EXHIBIT C

                                CLEARWIRE MARKS

Instructions for use of the Clearwire Marks can be found at
www.clearpartner.com.

                Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

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                                    EXHIBIT D

                          CIRCUIT CITY LICENSED MARKS

         (CIRCUIT CITY LOGO)                     (CIRCUIT CITY(R) LOGO)
                                                JUST WHAT I NEEDED(R) SM

         (CIRCUIT CITY LOGO)                     (CIRCUIT CITY(R) LOGO)

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                         Page 16

<PAGE>

                                    EXHIBIT E

                                      [***]

                 Clearwire/Circuit City Confidential Information

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                                         EXHIBIT F
                                    EQUIPMENT AGREEMENT

THIS EQUIPMENT AGREEMENT ("Agreement") is made a part of and is hereby
incorporated into the Co-Marketing Agreement (the "Co-Marketing Agreement")
between Circuit City Stores, Inc. and its affiliates, having its principal place
of business at 9950 Mayland Drive, Richmond, Virginia, USA, 23221("Circuit
City") and Clearwire LLC having its principal place of business at 5808 Lake
Washington Blvd. NE, Suite 300, Kirkland, WA 98033 ("Clearwire"), which became
effective on Sept. 6, 2006. This Agreement is intended to set forth the terms
and conditions under which Clearwire will provide certain equipment (set forth
on Attachment 1, as may be amended from time to time) (the "Equipment") to
Circuit City; Circuit City will then provide the Equipment to Subscribers, which
the Subscribers lease directly from Clearwire. Terms used in this Agreement, but
not defined in this Agreement, have the meaning given in the Co-Marketing
Agreement

With respect to Equipment, the following terms shall supplement the terms of the
Co-Marketing Agreement

1. RESERVATION OF RIGHTS AND TITLE. Title to the Equipment is at all times
reserved to Clearwire. Circuit City agrees to cooperate with Clearwire in
effecting the protections afforded under Sections 9-103(d), 9-109 (a)(4) and 9-
319 of the Uniform Commercial Code as adopted and in effect (or parallel
protections, if the Uniform Commercial Code is not in effect) in each state in
which such a filing is necessary to effect such protections, to the extent
applicable under this Agreement; provided, however, Circuit City makes no
representation or warranty that Clearwire's interests in the Equipment will be
"perfected" as that term is defined in Article 9 of the Uniform Commercial Code,
however Circuit City shall not encumber such equipment nor interfere with such
perfected interest. Circuit City agrees to execute UCC-1 financing statements or
such other form as may be appropriate for the relevant state, provided that
Clearwire shall be responsible for preparation of such financing statements and
for the filing of such financing statements and payment of all applicable filing
and preparation costs. The parties acknowledge that the transaction described in
this Agreement is not a "consignment" within the meaning of the Uniform
Commercial Code. Circuit City shall take delivery of the Equipment from
Clearwire from time to time in accordance with this Agreement. Circuit City may
only distribute Equipment to Subscribers in a Clearwire service area (which
shall be subject to a sale or lease arrangement directly between Clearwire and
the Subscriber). The price for the Equipment shall be determined by Clearwire
and shall be stated in the equipment lease agreement between Clearwire and the
Subscriber (the "Equipment Lease Agreement"). Circuit City may not sell the
Equipment

2. LEASE OF EQUIPMENT. In accordance with the terms of the Co-Marketing
Agreement, Circuit City will register Subscribers for the Services. As part of
the registration process, each Subscriber will enter into an Equipment Lease
Agreement between the Subscriber and Clearwire. The lease price of the Equipment
shall be determined by Clearwire, in its sole discretion. Upon completion of the
registration process, Circuit City will give the leased equipment to the
Subscriber. In order to track Equipment in Circuit City's possession, Circuit
City will assign a stock-keeping unit to the Equipment. The Equipment will show
a price tag of [***] but will net to [***] upon a Subscriber's registration for
the Services; the [***] "price" will not be charged to Subscribers and is caused
by a point of sale systems limitation that prohibits the processing of free
tickets.

3. INVOICES; PAYMENT; ALLOWANCES. All transactions (e.g., purchase orders and
invoices) shall be conducted via Electronic Data Interchange (EDI). At
appropriate intervals, as determined by Circuit City, Circuit City will issue a
purchase order to Clearwire requesting additional Equipment. Upon receipt of a
purchase order, Clearwire will ship the requested Equipment pursuant to the
Circuit City Vendor Supply Chain Agreement dated June 9, 2006 and submit a
corresponding invoice to Circuit City that contains quantity and stock-keeping
unit information. Notwithstanding the terms on any purchase order or any
invoice, Circuit City and Clearwire agree that the Equipment will be provided at
no cost to Circuit City, and at all times thereafter, Clearwire shall continue
to retain title to the Equipment. Notwithstanding any term in any agreement
entered into between Circuit City and Clearwire in the event of a recall of
Equipment Clearwire will use commercially reasonable efforts to satisfy any
purchase

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

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order issued by Circuit City, however Circuit City acknowledges and agrees that
complete fulfillment may not be possible and that in such instance Clearwire
shall not be in breach of any agreement for failure to completely satisfy any
purchase due to such circumstances. Circuit City shall ensure that its
merchandise receipt system automatically matches each invoice to the
corresponding Equipment delivery and purchase order issued by Circuit City. Any
discrepancies (e.g., shortages) identified by Circuit City will be reconciled
with Clearwire each month to assure that the parties agree to the correct
inventory of Equipment held by Circuit City. The parties will at this time make
any necessary corrections to their records concerning invoices and quantities.

4. INVENTORY AUDITS. Clearwire may audit Circuit City's distribution centers
pertaining solely to the subject matter of this Agreement no more than 1 times
per calendar quarter, provided that Circuit City shall be given seven (7) days
written notice, and further provided that the audit shall take place at Circuit
City's facilities during normal business hours. Costs of the audit shall be
borne by Clearwire, provided that if a five percent (5%) or greater discrepancy
is found in either amounts owed or Equipment inventory, Circuit City will
reimburse the reasonable and documented costs of such audit in addition to any
moneys owed.

5. TAXES. Because the Equipment is not being sold by Circuit City to the
Subscribers, Circuit City will NOT be responsible for the collection and
remittance of sales, use, or lease taxes to the proper taxing authorities;
Clearwire shall be solely responsible for any such collection and remittance of
sales, use or lease taxes to the proper taxing authorities. Clearwire will be
responsible for paying any personal property taxes relating to the Equipment in
Circuit City's possession; provided that the parties will cooperate to minimize
the amount of such personal property taxes. Furthermore, Clearwire agrees to
indemnify, defend and hold harmless Circuit City and its affiliates, and each of
their officers and directors against any penalty, additional tax or interest
that may be assessed or levied as a result of the failure to timely collect or
pay any tax, or to file any return, form or information statement that may be
required by any governmental agency. Provided, however, that Clearwire shall not
be obligated to indemnify Circuit City in the event that (i) Clearwire was not
timely notified of the claim or potential claim, and/or (ii) such claim arises
out Circuit City's process or procedures relating to the sale or accounting of
Equipment as set forth in Section 2. Circuit City shall not report the Equipment
as property of Circuit City. Each party shall be responsible for reporting its
own income derived from this Agreement and for payment of its own income taxes.

6. SHIPMENTS. Clearwire will ship the Equipment to Circuit City's designated
shipping address (e.g., distribution centers and/or stores) at Clearwire's risk
and expense. Clearwire shall be responsible for making shipping arrangements,
scheduling, tracking, proof of delivery, tracing, and obtaining insurance for
loss or damage while Equipment is in transit, and filing freight claims for loss
and/or damage. If expedited shipment becomes necessary, in the reasonable
opinion of both parties, due to the fault or delay of Clearwire, then Clearwire
shall pay the costs of such expedited shipments to either Circuit City's
distribution centers or via drop ships to Circuit City's stores, as requested by
Circuit City. If expedited shipment becomes necessary, in the reasonable opinion
of both parties, due to the fault or delay of Circuit City, then Clearwire
agrees to ship product, freight collect, to either Circuit City's distribution
centers, or stores via drop ship, as requested by Circuit City; Circuit City
shall then chargeback Clearwire the difference between the standard ground
shipping costs and the expedited shipping costs. The carrier (not Clearwire)
shall invoice Circuit City in this latter freight collect situation. Clearwire
agrees not to include freight charges on any invoices under any circumstances.

7. RETURN OF GOODS. [***] Except as otherwise expressly set forth in this
Agreement, Circuit City agrees to arrange and pay for return shipments.
Notwithstanding the foregoing, Circuit City reserves the right to return, at
Clearwire's expense, any Equipment for which a claim is made that alleges that
the Equipment (1) infringes any alleged patent, design, trade name, trademark,
copyright, right of privacy, or any other tangible or intangible property
rights, or (2) is not manufactured, packaged and labeled in accordance with
industry standards and/or all applicable laws, ordinances, rules and regulations
by governmental departments, bodies and agencies governing and/or restricting
the receipt and sale of Equipment by the undersigned Circuit City, or (3) has
caused injury to person or property. In addition, Clearwire agrees to pay the
cost of return shipments of substantially defective product. Equipment that is
defective (which includes but is not limited to Equipment that is returned
without the box, with an opened box, or with a damaged box) shall be the
responsibility of Clearwire, and may be returned to

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

[*** Confidential Treatment Requested]

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<PAGE>

Clearwire unless otherwise mutually agreed. In all cases, Clearwire agrees to
provide a return authorization ("RA") within 48 hours of request submitted to
Clearwire in accordance with Clearwire's procedures.

8. FURTHER OBLIGATIONS OF CIRCUIT CITY.

     a. Circuit City will pay Clearwire [***](the "Agreed Cost') for each unit
of Equipment of the type listed on Attachment 1 that is lost, stolen or damaged
while in Circuit City's possession, less any applicable discounts, allowances or
other valid off set amounts. Notwithstanding the foregoing, Circuit City agrees
to use commercially reasonable efforts to protect and preserve the Equipment
that is in its care, custody or control, wherever located. Circuit City further
agrees to maintain all-risk property insurance in an amount adequate to fully
insure all Equipment in its care, custody or control, wherever located, in an
amount not less than $5 Million, and will name Clearwire.

     b. Circuit City agrees to deliver to Subscribers, in accordance with
Clearwire's instructions and activation procedures, Equipment to be used by
Subscribers for their use of the Services. Circuit City may only offer Equipment
that is approved by Clearwire. Circuit City agrees to cooperate with Clearwire
in order to maintain a mutually agreed upon inventory of Equipment that is
sufficient, in, to meet reasonably anticipated demand by Subscribers that
Circuit City enrolls for the Services. From the time of delivery of the
Equipment to Circuit City's location until delivery to a Subscriber in
accordance with this Agreement, Circuit City will store all Equipment delivered
to Circuit City in a safe and secure location, all at Circuit City's expense.
Prior to delivery to a Subscriber in accordance with mutually agreed
authorization procedures, the Equipment may upon mutual agreement be upgraded or
otherwise modified by Clearwire. Upon Clearwire's reasonable demand, Circuit
City will ship all or any portion of the Equipment to Clearwire, at Clearwire's
expense; provided, however, Clearwire shall not pull any Equipment from Circuit
City for the purpose of supplying Equipment to another Clearwire reseller or
representative. Clearwire will have the right, from time to time, to sell,
lease, or otherwise dispose of, all or any potion of the Equipment to a third
party, at prices and on terms established by Clearwire in its sole discretion,
and Clearwire will have no obligation to share any proceeds from such sale with
Circuit City.

9. TERM; TERMINATION. The term of this Agreement shall commence on the Effective
Date, and shall continue until expiration or termination of the Co-Marketing
Agreement, and shall automatically renew on the same terms applicable to the
Co-Marketing Agreement. Termination shall not affect the parties' respective
outstanding obligations.

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

[*** Confidential Treatment Requested]

                                                                         Page 20

<PAGE>

ATTACHMENT-1 TO EQUIPMENT AGREEMENT

(Equipment to be leased to Members)

<TABLE>
<CAPTION>
DESCRIPTION OF EQUIPMENT       AGREED COST
------------------------       -----------
<S>                            <C>
SKU # RSU 2570-FV (LX Model)      [***]
Product Description:
</TABLE>

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

[*** Confidential Treatment Requested]

                                                                         Page 21

<PAGE>

                                    EXHIBIT G

                                CLEARWIRE STORES

This Exhibit G sets forth the definition and management of Circuit City Stores
in which Circuit City is authorized and shall Market and sell the Services (the
"Selected Circuit City Stores"). Any Circuit City store located in a Clearwire
coverage area will become a Selected Circuit City Store. Initial launch will
include a minimum of 36 stores. Future Clearwire markets and subsequent new
Selected Circuit City Stores will be identified through a shared "Master Store
List" posted on a secure site accessible by both parties. Clearwire shall give
Circuit City at least sixty (60) days prior written notice of new market
availability and Circuit City shall market and sell the Services in such
markets.

                 Clearwire/Circuit City Confidential Information

  Not to be disclosed without written permission of Clearwire and Circuit City

                                                                         Page 22

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