Document:

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                                                                 Exhibit 10.44

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                               PURCHASE AGREEMENT

                                     between

                               COMSPEC CORPORATION

                                       and

                         CLEARWIRE SPECTRUM HOLDINGS LLC

                          Dated as of November 8, 2005

[* * * Portions of this Exhibit have been omitted and filed separately with the
Securities and Exchange Commission as part of an application for confidential
treatment pursuant to the Securities Act of 1933, as amended]

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                               TABLE OF CONTENTS

Page

ARTICLE 1 DEFINITIONS .................................................1
ARTICLE 2 PURCHASE AND SALE OF ASSETS..................................4
ARTICLE 3 REPRESENTATIONS AND WARRANTIES OF SELLER.....................6
ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF PURCHASER..................10
ARTICLE 5 COVENANTS AND OTHER AGREEMENTS...............................10
ARTICLE 6 CONDITIONS TO CLOSING........................................13
ARTICLE 7 TERMINATION..................................................15
ARTICLE 8 SURVIVAL AND REMEDIES........................................16
ARTICLE 9 MISCELLANEOUS................................................19

                             SCHEDULES AND EXHIBITS

Exhibit A       Leases

Exhibit B       Retainer Agreement

Exhibit C       Form of Assignment and Assumption for Leases

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                               PURCHASE AGREEMENT

      This PURCHASE AGREEMENT, dated as of November 8, 2005 (the "Effective
Date"), is among COMSPEC Corporation, a North Carolina corporation ("Seller"),
and Clearwire Spectrum Holdings LLC, a Nevada limited liability company
("Purchaser"). Seller and Purchaser may be referred to herein as "Parties" or
each a "Party."

      A. Seller holds certain lease agreements pursuant to which Seller leases
the excess capacity on certain channels under certain licenses granted by the
FCC authorizing the construction and operation of Educational Broadband Service
("EBS"), formerly known as Instructional Television Fixed Service.

      B. Seller desires to sell certain of its leases and assign certain
liabilities relating thereto for EBS spectrum to Purchaser, and Purchaser
desires to purchase such assets and assume such liabilities on the terms and
subject to the conditions set forth in this Agreement.

      NOW, THEREFORE, in consideration of the premises and the mutual
representations, warranties, covenants, conditions and agreements hereinafter
set forth, the Parties agree as follows:

                                    ARTICLE 1
                                   DEFINITIONS

      As used in this Agreement, the following terms shall have the meanings set
forth or referenced below:

      "Affiliate" means, with respect to any Person, any other Person that,
directly or indirectly, alone or through one or more intermediaries, controls,
is controlled by or is under common control with that Person. For purposes of
this definition, "control" (including the terms "controlling" and "controlled")
means the power to direct or cause the direction of the management and policies
of a Person, directly or indirectly, whether through the ownership of securities
or partnership or other ownership interests, by contract or otherwise.

      "Agreement" means this Purchase Agreement and all Exhibits and Schedules
hereto, as amended, supplemented or otherwise modified from time to time in
accordance with the terms hereof.

      "Applicable Closing" means the Closing, the Partial Closing or a
Subsequent Partial Closing, as the context requires.

      "Applicable Closing Date" means the Closing Date, the Partial Closing Date
or a Subsequent Partial Closing Date, as the context requires.

      "Assets" is defined in Section 2.1.

      "Assumed Liabilities" is defined in Section 2.3.

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      "Business Day" means any day, other than a Saturday or Sunday, on which
commercial banks and foreign exchange markets are open for business in Seattle,
Washington.

      "Channels" means the EBS channels identified on Exhibit A.

      "Claim" is defined in Section 8.4(a).

      "Closing" is defined in Section 2.7(a).

      "Closing Date" is defined in Section 2.7(a).

      "Confidential Information" means any and all information regarding the
business, finances, operations, products, services and customers of the
disclosing party and its Affiliates, in written or oral form or in any other
medium.

      "Consents" means all consents and approvals of Governmental Authorities or
other third parties necessary to authorize, approve or permit the Parties hereto
to consummate the Transactions, including any consents from the Lessors required
under the Leases.

      "Damages" means any and all losses, claims, demands, liabilities,
obligations, actions, suits, orders, statutory or regulatory compliance
requirements, or proceedings asserted by any Person, and all damages, costs,
expenses, assessments, judgments, recoveries and deficiencies, including
interest, penalties, investigatory expenses, consultants' fees, and reasonable
attorneys' fees and costs, of every kind and description, contingent or
otherwise.

      "EBS" is defined in Recital A.

      "Effective Date" is defined in the preamble.

      "Excluded Assets" is defined in Section 2.2.

      "Excluded Liabilities" is defined in Section 2.2.

      "FCC" means the Federal Communications Commission or any successor agency
thereof.

      "FCC Rules" means Title 47 of the Code of Federal Regulations, as amended
at any time and from time to time, and FCC decisions, policies, reports and
orders issued pursuant to the adoption of such regulations.

      "Final Order" means an action or decision of the FCC as to which (i) no
request for a stay or similar request is pending, no stay is in effect, the
action or decision has not been vacated, reversed, set aside, annulled or
suspended and any deadline for filing such request that may be designated by
statute or regulation has passed, (ii) no petition for rehearing or
reconsideration or application for review is pending and the time for the filing
of any such petition or application has passed, (iii) the FCC does not have the
action or decision under reconsideration on its own motion and the time within
which it may effect such

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reconsideration has passed, and (iv) no appeal is pending including other
administrative or judicial review, or in effect and any deadline for filing any
such appeal that may be designated by statute or rule has passed.

      "Governmental Authority" means a Federal, state or local court,
legislature, governmental agency (including the United States Department of
Justice), commission or regulatory or administrative authority or
instrumentality.

      "Law" means applicable common law and any statute, ordinance, code or
other law, rule, permit, permit condition, regulation, order, decree, technical
or other standard, requirement or procedure enacted, adopted, promulgated,
applied or followed by any Governmental Authority.

      "Lease" and "Leases" are defined in Section 2.1.

      "Lessor" means the applicable lessor under a Lease.

      "Licenses" is defined in Section 2.1.

      "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest, right of first refusal or right of others therein, or
encumbrance of any nature whatsoever in respect of such asset.

      "Partial Closing" is defined in Section 2.7(b).

      "Partial Closing Date" is defined in Section 2.7(b).

      "Party" or "Parties" is defined in the preamble.

      "Person" means any general partnership, limited partnership, limited
liability company, corporation, joint venture, trust, business trust,
Governmental Authority, cooperative, association, other entity, or individual,
and the heirs, executors, administrators, legal representatives, successors, and
assigns of such person as the context may require.

      "Purchase Price" is defined in Section 2.4.

      "Purchaser" is defined in the preamble.

      "Purchaser Indemnified Parties" is defined in Section 8.2.

      "Retainer Agreement" is defined in Section 2.7(c).

      "Seller" is defined in the preamble.

      "Seller Indemnified Parties" is defined in Section 8.3.

      "Subsequent Partial Closing" is defined in Section 2.7(b).

      "Subsequent Partial Closing Date" is defined in Section 2.7(b).

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      "Towers" means any towers or other "antenna structures" as defined by the
FCC in Part 17 of the FCC Rules.

      "Transactions" means the transactions contemplated by this Agreement.

                                   ARTICLE 2
                           PURCHASE AND SALE OF ASSETS

      Section 2.1 Purchase and Sale. On the terms and subject to the conditions
of this Agreement, at the Closing (or a Partial Closing, if applicable), Seller
shall sell, assign, transfer, convey and deliver to Purchaser or Purchaser's
designees, and Purchaser shall purchase from Seller, all of Seller's right and
interest as of the Closing Date (or partial Closing Date, if applicable) in and
to the following assets (collectively the "Assets") free and clear of all Liens:

      the leases (individually, a "Lease" and collectively, the "Leases")
      pursuant to which Seller leases the whole or a portion of the spectrum on
      certain Channels pursuant to FCC licenses granted to the applicable Lessor
      (the "Licenses") for commercial use in the markets listed on Exhibit A.

      Section 2.2 Excluded Assets. As used herein, the term "Excluded Assets"
means all the properties, assets, goodwill and rights of Seller of whatever kind
and nature, real or personal, tangible or intangible, that are owned, leased or
licensed by Seller on the Closing Date (or Partial Closing Date, if applicable)
that are not specifically listed in Section 2.1 or the Exhibits referred to
therein. Seller shall not sell, assign, transfer, convey or deliver to
Purchaser, and Purchaser shall not purchase, assume or otherwise acquire from
Seller, any right, title or interest in or to the Excluded Assets.

     Section 2.3 Liabilities. On the terms and subject to the conditions of this
Agreement, Purchaser shall assume, effective as of the Applicable Closing, only
those liabilities of Seller the performance of which becomes due after the
Applicable Closing under the Leases to be assigned to Purchaser on the
Applicable Closing Date (the "Assumed Liabilities"), and from and after the
Applicable Closing, Purchaser shall pay, perform and discharge when due the
Assumed Liabilities. Except for the Assumed Liabilities, Purchaser shall not
assume, or be obligated or liable for, any liabilities of Seller, or any of its
Affiliates, predecessors, assignors, or transferors, including any liabilities
under the Leases incurred and/or to be performed under the terms thereof on or
before the Closing Date (the "Excluded Liabilities"), whether in connection with
the transactions contemplated hereby, or otherwise, all of which shall be
retained and paid, performed and discharged when due by Seller or one of
Seller's Affiliates. Notwithstanding the foregoing, the Assumed Liabilities
shall include as of the Applicable Closing with respect to such Lease (i) the
deferred lease payment amounts under the lease, as amended, with ***, accrued
but unpaid from February 29, 2004 (which is in the aggregate amount of *** as of
the end of October, 2005 and is increasing in the amount of *** for each
succeeding month subject to CPI adjustments) and (ii) upon receipt of one of
more invoices in general detail with respect to the amount so claimed, the
payment in an amount

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not to exceed $20,000 for attorneys fees and charged disbursements
incurred by Seller in connection with (I) the negotiation and execution of the
term sheet dated September 6, 2005 relating to the Transactions, (II) the
negotiation and execution of this Agreement, and (III) preparing for and
participating in the Closing (or all Partial Closings, if applicable); provided,
however, Purchaser shall not assert that the delivery of such invoices shall
constitute the waiver of Seller's attorney-client privilege.

      Section 2.4 Purchase Price. The purchase price (the "Purchase Price") for
the Assets shall be ***.

      Section 2.5 Payment of Purchase Price. The portion of the Purchase Price
allocable to each Lease shall be payable at the Applicable Closing with respect
to such Lease in immediately available funds via wire transfer to an account
designated by Seller.

      Section 2.6 [Intentionally Omitted.]

      Section 2.7 Closing and Partial Closings.

            (a) Subject to Section 2.7(b), upon the terms and subject to the
      conditions hereof, the closing of the sale of all of the Assets (the
      "Closing") shall take place at the Washington, D.C. offices of Davis
      Wright Tremaine on a Business Day (the "Closing Date") within ten (10)
      Business Days following the date on which the last condition to Closing
      under Article 6, including without limitation, the condition set forth in
      Section 6.4, has been satisfied or waived, or at such other time and place
      as the Parties may mutually agree.

            (b) Notwithstanding Section 2.7(a), at the option of Seller, the
      Parties shall effect one or more closings with respect to Leases for which
      the conditions under Article 6 for Partial Closing have been met,
      including without limitation the condition set forth in Section 6.5, even
      though such conditions have not been met with respect to other Leases or
      closing has occurred with respect to some but not all of the Leases. Each
      such closing with respect to less than all of the Leases shall be referred
      to as a "Partial Closing." If Seller exercises such option one or more
      times, Seller shall give Purchaser notice of the Leases that will be
      assigned to Purchaser at a Partial Closing and Seller shall set the date
      of such closing (each, a "Partial Closing Date"), that shall be on a
      Business Day not less than five (5) or more than ten (10) days after the
      delivery of such notice to Purchaser. In the event that Seller elects to
      proceed to a Partial Closing, Seller shall be entitled to assign such of
      the Leases as have not been assigned to Purchaser at the first Partial
      Closing at one or more subsequent Partial Closings (each, a "Subsequent
      Partial Closing") following the satisfaction of the conditions precedent
      to Purchaser's and Seller's obligation to close with respect to such
      Leases as have not been previously assigned to Purchaser. In each such
      event, Seller shall give Purchaser notice of the Leases that will be
      assigned to Purchaser at such subsequent Partial Closing and Seller shall
      set the date of such closing (each, a "Subsequent Partial Closing Date"),
      that shall be on a Business Day not less than five (5) or more than ten
      (10) days after the delivery of such notice to Purchaser.

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            (c) At the Closing (or the first Partial Closing, if applicable),
      Purchaser (or one of its Affiliates) shall enter into a retainer agreement
      with Seller substantially in the form attached hereto as Exhibit B (the
      "Retainer Agreement").

            (d) At each Applicable Closing, Seller shall provide Purchaser with
      an invoice for attorneys' fees and chargeable disbursements as have been
      incurred but not reimbursed hereunder as provided in Section 2.3 and
      Seller shall pay Purchaser the amount of such invoice at such closing,
      subject to the limitation stated in Section 2.3.

                                   ARTICLE 3
                    REPRESENTATIONS AND WARRANTIES OF SELLER

      Seller represents and warrants to Purchaser as follows:

      Section 3.1 Authorization. Seller is lawfully existing and in good
standing under the laws of the State of North Carolina, and has all requisite
power and authority to enter into this Agreement and to perform the obligations
to be performed by it under this Agreement. The execution and delivery of this
Agreement, and the performance by Seller of its obligations hereunder, have been
duly authorized by all necessary action on the part of Seller.

      Section 3.2 Enforceability. This Agreement and each other agreement,
document or instrument or certificate contemplated by this Agreement has been
duly executed and delivered by Seller and is a legal, valid and binding
obligation of Seller, enforceable against Seller in accordance with its terms,
subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights and to general equity principles.

      Section 3.3 No Conflicts or Consents. Neither the execution, delivery and
(assuming the receipt of Lessor consents) performance by Seller of this
Agreement, nor (assuming the receipt of Lessor consents) the consummation of the
Transactions by Seller, will (i) constitute, with or without the giving of
notice or passage of time or both, a breach, violation or default by Seller or
any of its Affiliates, create a Lien, or give rise to any right of termination,
modification, cancellation, prepayment or acceleration, under (x) any Law or
license (subject to receipt of Consent of the FCC) or (y) any note, bond,
mortgage, indenture, lease, agreement or other instrument, in each case which is
applicable to or binding upon Seller or any of the Assets; (ii) require any
Consent, other than the consent of the Lessors to the Leases listed on Exhibit
A; or (iii) violate any law by which Seller is bound.

      Section 3.4 FCC Matters.

            (a) True and complete copies of the Licenses underlying each Lease
      have been delivered to Purchaser. There is no condition outside of the
      ordinary course imposed on any of the Licenses by the FCC except those
      that are either set forth on the face of the Licenses, as issued by the
      FCC, or are contained in the FCC Rules applicable generally to EBS
      stations. To Seller's knowledge, the Licenses constitute all
      authorizations from the FCC necessary or required for and/or used in the
      operation of the Channels in the market areas identified on Exhibit A as
      of the Effective Date.

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      To Seller's knowledge, the applications - related to the Licenses that are
      listed on Section 3.4 of the Disclosure Schedule are all the applications
      that are pending at the FCC as of the Effective Date to modify the
      Licenses. To the Seller's knowledge, the applicable Lessor is the licensee
      under its Licenses. The Licenses have been granted to the applicable
      Lessor by Final Order and are in full force and effect.

            (b) To the knowledge of Seller after due inquiry and except for rule
      makings of general applicability , there is not pending or threatened
      against Seller or the Licenses any application, action, petition,
      objection or other pleading, or any proceeding with the FCC or any other
      Governmental Authority, which (i) questions or contests the validity of,
      or seeks the revocation, forfeiture, non-renewal or suspension of, any of
      the Licenses, (ii) seeks the involuntary modification of any of the
      Licenses, (iii) which would adversely affect the ability of Seller to
      consummate the Transactions with respect to that License or (iv) seeks the
      payment of a fine, sanction, penalty, damages or contribution in
      connection with the use of the Licenses. To the knowledge of Seller and
      except for rule makings of general applicability, there are no facts or
      circumstances existing that would give rise to any such application,
      action, petition, objection or other pleading, or proceeding with the FCC
      or any other Governmental Authority. There is no unsatisfied adverse FCC
      order or ruling outstanding against Seller, any Lessor or any of the
      Licenses. Neither Seller nor, to the knowledge of Seller, any Lessor is a
      party to any complaint or proceeding at the FCC regarding any of the
      Licenses.

            (c) Neither Seller nor, to the knowledge of Seller, any Lessor has
      agreed to accept or allow any electromagnetic interference from any other
      FCC licensees, permittees or applicants with respect to the Licenses
      and/or Channels, and, to the knowledge of Seller, no such licensees,
      permittees or applicants have agreed to accept electromagnetic
      interference from Seller or any Lessor with respect to their respective
      facilities.

            (d) Seller is in compliance with all applicable non-communications
      Laws except for any non-compliance that, individually or in the aggregate,
      will not have a material adverse effect on the Licenses or on Seller's
      ability to consummate the Transactions. Since January 28, 2004 , and
      assuming the Leases comply with FCC Rules and the Communications Act with
      respect to matters of control, Seller has and, to the knowledge of Seller
      after due inquiry, all Lessors have complied in all material respects with
      FCC Rules applicable to the Licenses, including without limitation the
      Communication Act of 1934, as amended, and Seller has and, to the
      knowledge of Seller after due inquiry, all Lessors have complied in all
      material respects with all of the terms and conditions of the Licenses. To
      the knowledge of Seller, the Licenses are free and clear of all Liens and
      are unimpaired by any acts or omissions of Seller or any Lessor, or their
      respective agents, assignees and licensees. All material documents
      required to be filed at any time by Seller since January 28, 2004 or, to
      the knowledge of Seller, any Lessor with the FCC with respect to the
      Licenses have been timely filed or the time period for such filing has not
      lapsed. All such documents filed by Seller with the FCC with respect to
      the Licenses since January 28, 2004 are

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      correct in all material respects. All amounts owed to the FCC since
      January 28, 2004 in connection with the Licenses have been timely paid.

            (e) To the knowledge of Seller, the facilities operating pursuant to
      the Licenses (if any) are operating in material compliance with the
      Licenses therefore and the relevant FCC Rules. To the knowledge of Seller,
      none of the facilities subject to the Licenses is (a) authorized pursuant
      to an authorization which is subject to challenge before the FCC or any
      court of competent jurisdiction or (b) subject to any lease, sublease or
      any agreement to make it available to a third party conflicting with the
      associated Lease.

            (f) Seller does not lease any Towers for the market area covered by
      the Licenses.

      Section 3.5  Leases.

            (a) Seller validly holds the Leases set forth on Exhibit A. The
      information set forth on Exhibit A is true and correct. True and complete
      copies of the Leases, together with all amendments, waivers and notices
      thereto (whether written or oral), have been provided to Purchaser.
      Assuming compliance of the Leases and the actions and inactions of Lessors
      with the Communications Act of 1934, as amended, and FCC Rules, and
      assuming compliance by Seller with FCC control requirements, including
      Section 310 of the Communications Act of 1934 and the implementing FCC
      Rules, the Leases are in full force and effect, are free from any claims,
      liabilities or Liens and are unimpaired by any acts or omissions of
      Seller, its agents, assignees and licensees. Subject to FCC control
      requirements, Seller has valid leasehold interests in the Leases and,
      assuming the grant of required Consents, will effectively convey to
      Purchaser valid leasehold interests in all of the Leases. Assuming
      compliance by Seller and Lessors with FCC control requirements, Seller's
      operations and activities pursuant to the Leases since January 28, 2004
      have been at all times conducted in material compliance with the
      Communications Act of 1934, as amended, and the FCC Rules.

            (b) Seller has paid all taxes and other charges due from Seller and
      assessed against the Assets, including but not limited to, against any EBS
      transmission facilities. Seller has also paid all other taxes, assessments
      and fees due from Seller as a result of the use of capacity on the
      Channels by Seller and the provision of services by Seller or any of
      Seller's sublessees over the Channels, including but not limited to any
      regulatory fees and required contributions to the Universal Service Fund
      under the Telecommunications Act of 1996 and the FCC Rules, except for
      taxes, assessments or fees, if any, with respect to services provided by
      Lessors to Lessors themselves and to any educational institution or
      not-for-profit organization or site with which Lessors are working in
      furtherance of educational goals approved by Lessors.

            (c) Exhibit A identifies all Leases which require the consent of a
      party thereto in order to be assigned to Purchaser in the Transactions.
      Seller has not

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      assigned, pledged, transferred, or otherwise disposed of or
      granted any Lien on its rights and interests under any of the Leases to
      any other Person, nor, to the knowledge of Seller, has Lessor assigned,
      transferred, or otherwise disposed of any of its rights, title and
      interests thereunder. Neither Seller nor, to the knowledge of Seller, any
      other party to any of the Leases has failed to materially comply with or
      is in material breach or material default thereunder. Except as set forth
      on Section 3.5 of the Disclosure Schedule, to the knowledge of Seller, no
      condition exists or event has occurred and is continuing which, with or
      without the lapse of time or the giving of notice, or both, would
      constitute a material default by any party under any Lease or give rise to
      any Lien or right of termination, suspension, modification, cancellation,
      prepayment or revocation against Seller under any such Lease. Seller has
      not received any notice of termination, or intent to terminate, with
      respect to any Lease, and to the knowledge of Seller after due inquiry, no
      party to any Lease has made a threat to Seller to terminate any Lease.
      Other than the Leases, Seller is not a party to any material contracts
      relating to the Assets for which Purchaser could be liable for performance
      thereunder. None of the Leases are with any Person that is an officer,
      director, stockholder, member (or family member of such Person) or
      Affiliate of Seller.

      Section 3.6 Title to Assets; Condition of Assets. Pursuant to order of the
U.S Bankruptcy Court, Seller has all rights of the lessee under the Leases, free
and clear of any Liens except for Liens for taxes not yet due and payable.

      Section 3.7 Litigation. To the knowledge of the Seller (and subject to
proceedings of general applicability before the FCC), there is no legal
proceeding now in progress, pending or directly threatened against Seller as to
its rights in any of the Assets, nor to the knowledge of Seller after due
inquiry does there exist any basis therefor. Seller is not subject to any order,
writ, injunction or decree of any court or any federal, state, municipal or
other domestic or foreign Governmental Authority which is material to the
Transactions.

      Section 3.8 Brokers. Seller has not engaged a broker in connection with
the Transactions.

      Section 3.9 Representations and Warranties with Respect to Partial
Closings. Except with respect to the representations and warranties set forth
above in Section 3.1 and Section 3.2, the breach of a representation or warranty
with respect to a particular Lease shall be actionable and constitute a breach
hereunder only with respect to that specific Lease and not with respect to other
Leases, regardless of whether Closing (or a Partial Closing) with respect to
such other Leases has occurred.

      Section 3.10 Consents. Other than obtaining the consents of Lessors to the
assignment of Seller's rights in the Leases, as of the date of this Agreement
Seller is not required to obtain any Consents to enter into this Agreement or to
perform this Agreement.

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                                   ARTICLE 4
                 REPRESENTATIONS AND WARRANTIES OF PURCHASER

      Section 4.1 Existence; Authorization. Purchaser is lawfully existing and
in good standing under the laws of the State of Nevada, has all requisite power
and authority to enter into this Agreement and to perform the obligations to be
performed by it under this Agreement. The execution and delivery of this
Agreement, and the performance by Purchaser of its obligations hereunder, have
been duly authorized by all necessary action on the part of Purchaser.

      Section 4.2 Enforceability. This Agreement has been duly executed and
delivered by Purchaser and is a legal, valid and binding obligation of
Purchaser, enforceable against Purchaser in accordance with its terms, subject
to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles.

      Section 4.3 No Conflicts or Consents. Neither the execution, delivery and
performance by Purchaser of this Agreement, nor the consummation of the
Transactions by Purchaser, will require any Consent, other than the Consent of
the FCC.

      Section 4.4 Brokers. Purchaser has not employed any broker or finder or
incurred any liability for any brokerage or finder's fees or commissions in
connection with the Transactions.

      Section 4.5 Financial Ability to Perform. Purchaser has the funds
available, after allocating funds for other debts and obligations, to close the
Transactions and pay the Purchase Price.

      Section 4.6 Consents. As of the date of this Agreement, Purchaser is not
required to obtain any Consents to enter into this Agreement or to perform this
Agreement.

                                   ARTICLE 5
                         COVENANTS AND OTHER AGREEMENTS

      From the date of this Agreement through the Closing, the Partial Closing
(if any) and the Subsequent Partial Closings (if any):

      Section 5.1 Consummation of Transactions. Each Party shall use its
commercially reasonable, good faith efforts to take, or cause to be taken, all
actions, and to do, or cause to be done, all things necessary, proper or
advisable and consistent with applicable Law to perform its obligations under
this Agreement and to consummate the Transactions as soon as reasonably
practicable.

      Section 5.2 Certain Notices. Each Party shall promptly notify the other
Party in reasonable detail:

            (a) after obtaining knowledge of the basis, or the impending or
      threatened commencement of, any claim, action or proceeding brought to
      enjoin the

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      consummation of the Transactions, or against or relating to (i)
      the notifying Party or its properties or assets, which could materially
      adversely affect the Transactions or its ability to perform its
      obligations hereunder, or (ii) the Assets or their use;

            (b) upon obtaining knowledge of any facts that would give rise to,
      any event which could cause or constitute a material breach of any of its
      representations, warranties, covenants or agreements contained in this
      Agreement, and shall use commercially reasonable efforts to promptly
      remedy any such breach by such Party; and

            (c) upon the occurrence or existence of any event, condition,
      circumstance or state of facts known to the notifying Party, which has had
      or could have a material adverse effect on the Transactions or its ability
      to perform its obligations hereunder, or could materially adversely affect
      the Assets or their use.

      Section 5.3 Confidentiality. Pursuant to this Agreement and the
performance thereof, a Party (the "Receiving Party") may receive certain
Confidential Information of the other Party (the "Disclosing Party"). Receiving
Party shall not use for itself, except in performance of the Agreement, or
disclose to any Person this Agreement or any Confidential Information, except
(a) information that was gained independent of Receiving Party's relationship
with Disclosing Party and became publicly available through no breach of any
obligation of confidentiality by Receiving Party; (b) information that is
communicated to a third party with the prior written consent of Disclosing
Party; or (c) information that is required to be disclosed pursuant to the
lawful order of a government agency or disclosure that is required by operation
of law, but in such event, only to the extent such disclosure is required and,
to the extent reasonably practicable, prior written notice must be given to
allow Disclosing Party to seek a protective order or other appropriate remedy.
In the event of a breach or threatened breach of the terms of this section,
Disclosing Party shall be entitled to seek an injunction prohibiting any such
breach. Any such injunctive relief shall be in addition to, and not in lieu of,
any appropriate relief in the way of money damages or any other remedies
available at law or in equity. Receiving Party may disclose this Agreement to
its affiliates, strategic partners, actual or potential investors, lenders,
acquirers, merger partners; and others whom Receiving Party deems in good faith
to have a need to know such information for purposes of pursuing a transaction
or business relationship with Disclosing Party, provided that such parties are
subject to a confidentiality agreement that requires them to preserve the
confidentiality of the Confidential Information.

      Section 5.4 Further Assurances. Each Party shall forthwith upon request
execute and deliver such documents and take such actions as may reasonably be
requested by the other Party in order to effectuate the purposes of this
Agreement; provided, however, that Seller shall not be required to incur
expenses exceeding $5,000 in the aggregate in complying with this Section 5.4.

      Section 5.5 FCC Qualifications. Seller hereby covenants and agrees that
prior to the Closing it shall not knowingly or negligently take any action, or
fail to take any action, which action or failure to act eliminates the legal
qualifications under FCC Rules as in effect

                                       11
<PAGE>

on the date of this Agreement of the applicable Lessor to be qualified to hold
the Licenses or which would cause the FCC would revoke the Licenses.

      Section 5.6 Consents. The Parties shall use commercially reasonable
efforts and shall cooperate to prepare and file with Governmental Authorities
and other Persons, no later than ten (10) days following the Effective Date, all
applications, notices, petitions and other documentation necessary to obtain the
Consents (it being understood that the failure to file within such period shall
not constitute a breach of this Agreement). Each Party shall furnish to the
other Party all information concerning such Party and its Affiliates reasonably
required for inclusion in any application to be made in connection with the
Transactions or to determine compliance with FCC Rules.

      Section 5.7 Seller Affirmative Covenants. With respect only to those
Leases that have not been assigned to Purchaser, Seller shall (a) carry on its
business with respect to the Licenses and Leases only in the ordinary course of
business; (b) make such lease payments as required under the Leases to comply
with the Leases; (c) comply with all Laws applicable to the Leases, assuming the
Leases and the parties' behavior thereunder comply with FCC control
requirements; (d) subject to the Lessors' compliance therewith and assistance,
and such legal defenses of the Lessors to the leases as may exist and changes in
FCC Rules, maintain in full force and effect the Licenses (to the extent
required of Seller by the Leases) and the Leases; and (e) subject to the
reasonable assistance and cooperation of Purchaser and Clearwire Corporation,
use commercially reasonable, good faith efforts to pursue those consents for
assignment of the Leases from Seller to Purchaser as are required by the Leases
for such assignment.

      Section 5.8 Negative Covenants. Seller shall not, and shall not enter
into, any agreement, arrangement or understanding to, or otherwise offer or
commit to (a) sell, transfer, assign, lease, modify or dispose of any Assets or
of the spectrum to be covered by the Leases or any interests therein or portion
thereof, or negotiate therefore; or (b) create, incur or suffer to exist any
Lien or other liability on any Assets or the spectrum to be covered by the
Leases or any interest therein; or (c) amend any Lease. Purchaser agrees not to
attempt to re-negotiate any Lease prior to the respective Closing of such Lease.

      Section 5.9 Access. Between the date of this Agreement and the Closing
Date, Seller shall, during normal business hours (a) give Purchaser and its
representatives and advisors access to all books, records, offices and other
facilities and properties of Seller directly related to the Leases; and (b)
permit Purchaser and its representatives and advisors to make such inspections
thereof as Purchaser may reasonably request.

      Section 5.10 Publicity. Neither Seller nor Purchaser shall issue any press
release or public announcement concerning this Agreement or the transactions
contemplated hereby without obtaining the prior written approval of the other
Party hereto, which approval will not be unreasonably withheld or delayed,
unless disclosure is otherwise required by applicable Law; provided that, to the
extent required by applicable Law, the Party intending to make such release
shall use its commercially reasonable efforts consistent with such applicable
Law to consult with the other Party with respect to the text thereof; provided,
however, that statements to Lessors and their controlling bodies are permitted
by this Section

                                       12
<PAGE>

5.9 as long as such statements do not disclose the purchase price or other
financial terms of this Agreement.

      Section 5.11 Assistance of Purchaser in Seeking Lessor Consent. Subject to
the reasonable assistance and cooperation of Seller, Purchaser shall use its
commercially reasonable, good faith efforts to pursue those consents for
assignment of the Leases from Seller to Purchaser as are required by the Leases
for such assignment, such cooperation including making written and oral
presentations to Lessors as reasonably requested by Seller.

     Section 5.12 Clearwire Services. For a period of ten years from the later
of (i) Closing (or the first Partial Closing) and (ii) the time when Purchaser
commences commercial operation in the ***, Purchaser shall provide Seller with
Purchaser's or its operating affiliate's premium broadband service (i.e.,
similar to Purchaser's "Clear Business" service) plus five IP addresses at
Seller's principal place of business in the *** (plus one associated Clearwire
modem) and at one residential address in the *** (plus one associated Clearwire
modem). Seller shall be entitled to all functions and features that a paying
customer of Purchaser or its operating affiliate's subscribing at the premium
(i.e., similar to "Clear Business" service) level of broadband service would
receive as part of its package and without additional charge, including the
right to those service and equipment upgrades provided in the *** during this
ten-year period, the right to add features and functions at the standard rate
offered by Purchaser to its retail customers (not including promotional
discounts) in the *** at the time of upgrade, and the right to future expanded
services in exchange for payment of the difference between Purchaser's or its
operating affiliate's retail rate for the existing services and the retail rate
for the expanded services. The services provided by Purchaser or its operating
affiliate's to Seller under this Section 5.12 will be governed by Purchaser's
standard terms and conditions, as set forth from time to time at
www.clearwire.com or another site or means of general dissemination. This
Section 5.12 will survive the termination of this Agreement.

                                   ARTICLE 6
                  CONDITIONS TO CLOSING AND PARTIAL CLOSINGS

      Section 6.1 Conditions of Both Parties to Both Closing and Partial
Closings. Each Party's obligation to consummate the Transactions contemplated by
this Agreement at the Closing, a Partial Closing or a Subsequent Partial Closing
is subject to the satisfaction or waiver, on or prior to the Applicable Closing
Date, of the condition that no preliminary or permanent injunction or other
order, decree or ruling issued by a Governmental Authority, nor any Law
promulgated or enacted by any Governmental Authority, shall be in effect that
would impose material limitations on the ability of either Party to consummate
the Transactions subject to closing on such Applicable Closing Date.

      Section 6.2 Conditions to the Obligations of Seller for Both Closing and
Partial Closings. Seller's obligation to consummate the Transactions
contemplated by this Agreement is subject to the satisfaction or waiver on or
prior to the Applicable Closing Date, of each of the following conditions:

                                       13
<PAGE>

            (a) The representations and warranties of Purchaser contained herein
      shall be true and correct in all material respects (except for
      representations and warranties that are qualified as to materiality, which
      shall be true and correct) as of the Applicable Closing as if made on and
      as of the Applicable Closing (except that representations and warranties
      that are made as of a specific date need be so true and correct only as of
      such date, and representations as to Leases need to be true and correct
      only as to such Leases subject to assignment on such date), and Seller
      shall have received a certificate to such effect dated such date and
      executed by a duly authorized officer of Purchaser;

            (b) The covenants and agreements of Purchaser to be performed under
      this Agreement on or prior to the Applicable Closing, shall have been duly
      performed in all material respects, and Seller shall have received a
      certificate to such effect dated the Applicable Closing Date and executed
      by a duly authorized officer of Purchaser;

            (c) Purchaser shall have executed and delivered the Retainer
      Agreement;

            (d) Purchaser shall have executed and delivered to Seller an
      Assignment and Assumption with respect to the Leases subject to assignment
      at such Applicable Closing in the form of Exhibit C with the Leases
      subject to the Applicable Closing listed on Schedule 1 to such Exhibit C;

            (e) The Parties shall have obtained consents to assignment of the
      Leases subject to assignment at such Applicable Closing from the Lessors
      of those Leases, in form reasonably acceptable to Purchaser, but not
      containing any representation, warranty or estoppel of the Lessor or any
      agreement of the Lessor other than the grant of consent, and without the
      imposition of new conditions or requirements that are not acceptable to
      Purchaser; and

            (f) Purchaser shall have delivered to Seller the Purchase Price for
      such of the Leases subject to assignment at such Applicable Closing,
      pursuant to Section 2.5.

      Section 6.3 Conditions to the Obligations of Purchaser for Both Closing
and Partial Closings. Purchaser's obligation to consummate the Transactions
contemplated by this Agreement is subject to the satisfaction or waiver on or
prior to the Applicable Closing Date, of each of the following conditions:

            (a) The representations and warranties of Seller contained herein
      shall be true and correct in all material respects (except for
      representations and warranties that are qualified as to materiality, which
      shall be true and correct) as of the Applicable Closing, as if made on and
      as of the such Applicable Closing Date (except that representations and
      warranties that are made as of a specific date need be so true and correct
      only as of such date, and representations as to Leases need to be true and
      correct only as to such Leases subject to assignment on such date), and
      Purchaser shall have received a certificate to such effect dated such date
      and executed by a duly authorized officer of Seller;

                                       14
<PAGE>

            (b) The covenants and agreements of Seller to be performed under
      this Agreement on or prior to the Applicable Closing shall have been duly
      performed in all material respects, and Purchaser shall have received a
      certificate to such effect dated the Applicable Closing Date and executed
      by a duly authorized officer of Seller;

            (c) Seller shall have executed and delivered to Purchaser the
      Retainer Agreement;

            (d) Seller shall have executed and delivered to Purchaser an
      Assignment and Assumption with respect to the Leases subject to assignment
      at such Applicable Closing in the form of Exhibit C with the Leases
      subject to the Applicable Closing listed on Schedule 1 to such Exhibit C;

            (e) The Parties shall have obtained consents to assignment of the
      Leases subject to assignment at such Applicable Closing from the Lessors
      of those Leases, in form reasonably acceptable to Seller, but not
      containing any representation, warranty or estoppel of the Lessor or any
      agreement of the Lessor other than the grant of consent, and without the
      imposition of new conditions or requirements that are not acceptable to
      Seller.

      Section 6.4 Additional Conditions to the Obligations of Purchaser and
Seller for Closing. In addition to those conditions to Purchaser's obligation to
Close set forth in Sections 6.1 and 6.3 and Seller's obligation to Close set
forth in Sections 6.1 and 6.2, Purchaser's and Seller's obligation to consummate
the Closing is subject to the condition that the Closing include the assignment
and assumption of all of the Leases, but this condition does not apply to the
Partial Closings and the Subsequent Partial Closings.

      Section 6.5 Additional Conditions to the Obligations of Purchaser and
Seller for Partial Closing. In addition to those conditions to Purchaser's
obligation to Partial Closing set forth in Sections 6.1 and 6.3, Purchaser's
obligation to consummate a Partial Closing or a Subsequent Partial Closing with
respect to a Lease subject to assignment to Purchaser at such closing shall be
that its associated License shall authorize channel capacity which, when
combined with the channel capacity authorized under Licenses of other Leases for
the same Market previously assigned to Purchaser or its Affiliate or subject to
assignment to Purchaser or its Affiliate at such Partial Closing or Subsequent
Partial Closing, of not less than thirty-three (33) MHz of contiguous spectrum
(assuming for this purpose that each channel is on the frequencies assigned to
it post-transition under FCC Rule 27.5(2) as in effect on the date of this
Agreement).

                                    ARTICLE 7
                                   TERMINATION

      Section 7.1 Termination. This Agreement may be terminated at any time to
the extent not previously subject to Closing, Partial Closing or Subsequent
Partial Closing:

            (a) by mutual written consent of Purchaser and Seller;

                                       15
<PAGE>

            (b) by either Purchaser or Seller if (A) there shall be any law or
      regulation that makes consummation of the Transactions illegal or
      otherwise prohibited, or (B) any judgment, injunction, order or decree of
      any court or other Governmental Entity having competent jurisdiction
      enjoining Purchaser and Seller from consummating the Transaction is
      entered and such judgment, injunction or order shall have become final and
      non-appealable;

            (c) by either Party upon the occurrence of a material breach of any
      representation, warranty or covenant in this Agreement by the other Party
      if such breach is not cured within thirty (30) days following written
      notice by the non-breaching Party which notice shall describe the breach;

            (d) by Purchaser if neither the Closing nor a Partial Closing has
      occurred on or before the first anniversary of the Effective Date,
      provided that the failure to close on or before such date is not the fault
      of Purchaser;

            (e) by Seller if neither the Closing nor a Partial Closing has
      occurred on or before the first anniversary of the Effective Date,
      provided that the failure to close on or before such date is not the fault
      of Seller; or

            (f) as to any Leases as have not been assigned and assumed
      hereunder, upon the first anniversary of the Effective Date.

      Section 7.2 Effect of Termination. In the event of a termination of this
Agreement, neither Party shall have any liability or further obligation to the
other, except that

            (a) nothing herein will relieve a Party from liability for any
      breach by such Party of this Agreement; and

            (b) the provisions of this Article 7, Article 8 and Article 9 shall
      survive the termination of this Agreement. Whether or not Closing occurs,
      all costs and expenses incurred in connection with this Agreement and the
      Transactions shall be paid by the Party incurring such expenses.

                                    ARTICLE 8
                              SURVIVAL AND REMEDIES

      Section 8.1 Survival. The representations and warranties contained in this
Agreement shall survive the Closing until one (1) year after the Closing Date
(or in the case of a Partial Closing or Subsequent Partial Closing, until one
(1) year after the Partial Closing Date with respect to the Leases transferred
at such Partial Closing or Subsequent Partial Closing) and shall expire at such
time. The covenants of Seller contained in Section 8.2 of this Agreement shall
survive the Closing until one (1) year after the Closing Date (or in the case of
a Partial Closing or Subsequent Partial Closing, until one (1) year after the
Partial Closing Date with respect to the Leases transferred at such Partial
Closing or Subsequent Partial Closing) and shall expire at such time. The
covenants of Purchaser contained in Section 8.3 of this Agreement shall survive
the Closing until one (1) year after the Closing Date (or in the case of a
Partial Closing or Subsequent Partial Closing, until one (1) year after

                                       16
<PAGE>

the Partial Closing Date with respect to the Leases transferred at such Partial
Closing or Subsequent Partial Closing) and shall expire at such time, except
that Purchaser's indemnification obligation with respect to any Assumed
Liabilities under any particular Lease shall survive for the duration of the
assigned Leases in question plus one year after the expiration of such Lease.

      Section 8.2 Seller Indemnification. Seller shall indemnify Purchaser, its
representative members, managers, officers, employees, agents, successors and
assigns (the "Purchaser Indemnified Parties") and hold the Purchaser Indemnified
Parties harmless from and against any and all Damages based upon, attributable
to or resulting from:

            (a) the failure of any representation or warranty of Seller set
      forth in this Agreement, or any representation or warranty contained in
      any certificate delivered by pursuant to this Agreement, to be true and
      correct as of the dates made;

            (b) the breach of any covenant or other agreement on the part of
      Seller under this Agreement;

            (c) the Excluded Liabilities; and

            (d) the ownership and operation of each Lease from January 29, 2004
      to the Applicable Closing for that Lease.

      In the event of any claim for Indemnification under this Section 8.2,
Purchaser's recovery shall be limited to the greater of (i) the amount of the
Purchase Price allocated to the Lease or Leases with respect to which the claim
for indemnification arises or relates or (ii) $250,000 for each such Lease,
provided, however, that Purchaser's aggregate recovery shall not exceed the
Purchase Price paid by Purchaser.

      Section 8.3 Purchaser Indemnification. Purchaser shall indemnify Seller
and its agents, successors and assigns (the "Seller Indemnified Parties") and
hold the Seller Indemnified Parties harmless from and against any and all
Damages based upon, attributable to or resulting from:

            (a) the failure of any representation or warranty of Purchaser set
      forth in this Agreement, or any representation or warranty contained in
      any certificate delivered by pursuant to this Agreement, to be true and
      correct as of the dates made;

            (b) the breach of any covenant or other agreement on the part of
      Purchaser under this Agreement;

            (c) the Assumed Liabilities; and

            (d) the ownership and operation of the Assets following the
      Applicable Closing.

                                       17
<PAGE>

      Section 8.4 Indemnification Procedures.

            (a) In the event that any claim shall be asserted by any Person in
      respect of which payment may be sought under Section 8.2 or Section 8.3
      hereof (each, a "Claim"), the indemnified party shall reasonably and
      promptly cause written notice of the assertion of any Claim of which it
      has knowledge which is covered by this indemnity to be forwarded to the
      indemnifying party. The indemnifying party shall have the right, at its
      sole option and expense, to be represented by counsel of its choice, which
      must be reasonably satisfactory to the indemnified party, and to defend
      against, negotiate, settle or otherwise deal with any Claim which relates
      to any Damages indemnified against hereunder. If the indemnifying party
      elects to defend against, negotiate, settle or otherwise deal with any
      Claim which relates to any Damages indemnified against hereunder, it shall
      within five (5) days (or sooner, if the nature of the Claim so requires)
      notify the indemnified party of its intent to do so. If the indemnifying
      party elects not to defend against, negotiate, settle or otherwise deal
      with any Claim which relates to any Damages indemnified against hereunder,
      fails to notify the indemnified party of its election as herein provided
      or contests its obligation to indemnify the indemnified party for such
      Damages under this Agreement, the indemnified party may defend against,
      negotiate, settle or otherwise deal with such Claim. If the indemnified
      party defends any Claim, then the indemnifying party shall reimburse the
      indemnified party for the expenses of defending such Claim upon submission
      of periodic bills. If the indemnifying party shall assume the defense of
      any Claim, the indemnified party may participate, at his or its own
      expense, in the defense of such Claim; provided, however, that such
      indemnified party shall be entitled to participate in any such defense
      with separate counsel at the expense of the indemnifying party if (i) so
      requested by the indemnifying party to participate or (ii) in the
      reasonable opinion of counsel to the indemnified party, a conflict or
      potential conflict exists between the indemnified party and the
      indemnifying party that would make such separate representation advisable;
      and provided, further, that the indemnifying party shall not be required
      to pay for more than one such counsel for all indemnified parties in
      connection with any Claim. The Parties hereto agree to cooperate fully
      with each other in connection with the defense, negotiation, or settlement
      of any such Claim.

            (b) After any final judgment or award shall have been rendered by a
      court, arbitration board or administrative agency of competent
      jurisdiction and the expiration of the time in which to appeal therefrom,
      or a settlement shall have been consummated, or the indemnified party and
      the indemnifying party shall have arrived at a mutually binding agreement
      with respect to a Claim hereunder, the indemnified party shall forward to
      the indemnifying party notice of any sums due and owing by the
      indemnifying party pursuant to this Agreement with respect to such matter.

            (c) The failure of the indemnified party to give reasonably prompt
      notice of any Claim shall not release, waive or otherwise affect the
      indemnifying party's obligations with respect thereto except to the extent
      that the indemnifying party can demonstrate actual loss and prejudice as a
      result of such failure.

                                       18
<PAGE>

      Section 8.5 Remedies. IN NO EVENT SHALL ANY PARTY BE LIABLE FOR INDIRECT,
SPECIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES ARISING OUT OF A BREACH OF THIS
AGREEMENT, INCLUDING LOST PROFITS, EVEN IF ADVISED AT THE TIME OF BREACH OF THE
POSSIBILITY OF SUCH DAMAGES.

                                    ARTICLE 9
                                 MISCELLANEOUS

      Section 9.1 Entire Agreement. This Agreement constitutes the entire
agreement between the Parties pertaining to the subject matter hereof and
thereof and supersedes all prior and contemporaneous agreements, understandings,
negotiations and discussions, whether oral or written, of the Parties with
respect to the subject matter hereof and thereof.

      Section 9.2 Amendments and Waivers. Any provision of this Agreement may be
amended or waived if, and only if, such amendment or waiver is in writing and
signed (in the case of an amendment) by Seller and Purchaser or (in the case of
a waiver) by the Party against whom the waiver is to be effective. No failure or
delay by any Party in exercising any right, power or privilege hereunder shall
operate as a waiver thereof nor shall any single or partial exercise thereof
preclude any other or further exercise thereof or the exercise of any other
right, power or privilege.

      Section 9.3 Remedies Cumulative. Except as otherwise provided herein, all
rights, powers and remedies provided under this Agreement or otherwise available
in respect hereof at law or in equity shall be cumulative and not alternative,
and the exercise or beginning of the exercise of any thereof by a Party shall
not preclude the simultaneous or later exercise of any other such right, power
or remedy by such Party.

      Section 9.4 Assignment. This Agreement shall be binding upon and shall
inure to the benefit of the Parties and their respective successors and
permitted assigns. This Agreement may not be assigned by either Party without
the prior written consent of the other Party, except that after Closing
Purchaser may assign its interests under this Agreement to an Affiliate of
Purchaser, if such Affiliate executes an assumption agreement reasonably
acceptable to Seller in which such Affiliate agrees to perform Purchaser's
obligations under this Agreement. A merger, sale of stock, sale of assets, or
other similar transaction involving an entity that directly or indirectly
controls a Party to this Agreement, in which the name and existence of the
Purchaser is not changed, does not constitute an assignment for purposes of this
Agreement.

      Section 9.5 Notices. All notices or other communications hereunder shall
be in writing and shall be deemed to have been duly given or made (i) upon
delivery if delivered personally (by courier service or otherwise), as evidenced
by written receipt or other written proof of delivery (which may be a printout
of the tracking information of a courier service that made such delivery), or
(ii) upon confirmation of dispatch if sent by facsimile transmission (which
confirmation shall be sufficient if shown by evidence produced by the facsimile
machine used for such transmission), in each case to the applicable addresses
set forth below (or such other address which either Party may from time to time
specify):

                                       19
<PAGE>

            If to Seller:

            COMSPEC Corporation
            822 North Elm St.
            Greensboro, NC  27401
            Attention:  David. R. Hollowell
            Facsimile: 336.370.4116

            With a copy to (which shall not constitute notice):

            Kilpatrick Stockton LLP
            607 14th Street, N.W., Suite 900
            Washington, D.C. 20005
            Attention:  Thomas J. Dougherty, Jr.
            Facsimile: 202.585.0071

            If to Purchaser:

            Clearwire Spectrum Holdings LLC
            5808 Lake Washington Blvd. NE, Suite 300
            Kirkland, WA 98033
            Attention:  Benjamin G. Wolff, Executive Vice
            President

            Facsimile: 425.216.7776

            With a copy to (which shall not constitute notice):

            Davis Wright Tremaine LLP
            2600 Century Square
            1501 Fourth Avenue
            Seattle, WA 98101
            Attention:  Julie Weston
            Facsimile:  206.628.7699

      Section 9.6 Governing Law; Waiver of Jury Trial.

            (a) This Agreement shall be governed by, and construed in accordance
      with, the internal laws of the State of Washington, without reference to
      the choice of law principles thereof. Both Parties consent to the
      jurisdiction and venue of the federal court in Washington, D.C. for claims
      that can be brought in such court and for other claims to the jurisdiction
      and venue of the Washington, D.C. Superior Court and the D.C. Court of
      Appeals.

            (b) THE PARTIES HEREBY IRREVOCABLY WAIVE ANY AND ALL RIGHT TO TRIAL
      BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATED TO THIS
      AGREEMENT OR THE TRANSACTIONS.

                                       20
<PAGE>

      Section 9.7 Expenses. Except as otherwise expressly provided in this
Agreement, whether or not the Transactions are consummated, the Parties shall
bear their respective expenses (including, but not limited to, all compensation
and expenses of counsel, financial advisors, consultants, actuaries and
independent accountants) incurred in connection with this Agreement and the
Transactions. All filing fees required to be paid to any Governmental Authority
in connection with satisfying the conditions set forth in Article 5 will be
borne by Purchaser.

      Section 9.8 Invalidity. In the event that any of the provisions contained
in this Agreement or in any other instrument referred to herein, shall for any
reason be held to be invalid, illegal or unenforceable in any respect, such
invalidity, illegality or unenforceability shall not affect any other provision
of this Agreement or such other instrument and such provision will be
ineffective only to the extent of such invalidity, illegality or
unenforceability, unless the consummation of the Transactions is impaired
thereby.

      Section 9.9 Counterparts. This Agreement may be executed and delivered
(including by facsimile transmission) in one or more counterparts, each of which
shall be deemed an original, but all of which together shall constitute one and
the same instrument.

      Section 9.10 Headings. The headings of the Articles and Sections herein
are inserted for convenience of reference only and are not intended to be a part
of or to affect the meaning or interpretation of this Agreement.

                           [SIGNATURE PAGE FOLLOWS]

                                       21
<PAGE>

      IN WITNESS WHEREOF, the Parties have duly executed this Agreement as of
the date first above written.

                                        COMSPEC Corporation

                                        By: /s/ David R. Hollowell
                                            ---------------------------------
                                        Name: David R. Hollowell
                                              -------------------------------
                                        Title: President
                                               ------------------------------

                                        CLEARWIRE SPECTRUM HOLDINGS LLC

                                        By:
                                            ---------------------------------
                                        Name:
                                              -------------------------------
                                        Title:
                                               ------------------------------

                                       22
<PAGE>

                                   EXHIBIT A
                                     LEASES
<TABLE>
<CAPTION>
                                               PURCHASE
MARKET      CHANNELS    CALL SIGN   LESSOR       PRICE
------      --------    ---------   ------     --------
<S>         <C>          <C>         <C>        <C>
****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

****         ****         ****       ****        *****

</TABLE>

The consent of the Lessor is required to assign Seller's rights under all of the
above Leases to Purchaser.

                                    Exhibit A
<PAGE>

                                    EXHIBIT B
                               RETAINER AGREEMENT

                                       2
<PAGE>

                                    EXHIBIT C
                            ASSIGNMENT AND ASSUMPTION

      THIS ASSIGNMENT AND ASSUMPTION (this "Assignment and Assumption") is
entered into effective as of the   day of    , 2005 by and between COMSPEC
Corporation, a North Carolina corporation ("Assignor"), and Clearwire Spectrum
Holdings LLC, A Nevada limited liability company ("Assignee"), pursuant to that
certain Purchase Agreement (the "Purchase Agreement") dated as of    , 2005 by
and among Assignor and Assignee, pursuant to which Assignor agreed to assign
certain of its liabilities and obligations to Assignee. Capitalized terms not
otherwise defined herein shall have the respective meanings set forth in the
Purchase Agreement.

      Assignor and Assignee hereby agree as follows:

      1.    Assignment. Subject to the terms and conditions of the Purchase
            Agreement, Assignor does hereby assign, grant, transfer, convey, and
            set over unto Assignee all of Assignor's rights, title and interest
            in and to the Leases as defined in the Purchase Agreement and listed
            on Schedule 1 attached hereto, free and clear of all Liens, together
            with such other rights, causes of action and remedies as may arise
            by operation of law, in law or equity, in connection with any of the
            Leases.

      2.    Assumption. Subject to the terms of the Purchase Agreement, Assignee
            hereby undertakes, assumes and agrees to perform, pay or discharge
            when and as due all of the obligations of Assignor under the Leases
            insofar as such liabilities and obligations arise on or after the
            Closing Date, in accordance with the terms of the Purchase
            Agreement [but, with respect to the Lease with **** including
            those unpaid lease payments for the period on or after **** that
            have been deferred pursuant to a letter dated ****(1).

      3.    Binding Effect. This Assignment and Assumption shall be binding upon
            and shall inure to the benefit of the parties thereto and their
            respective successors and assigns.

      4.    Governing Law. This Assignment and Assumption shall be governed by
            and interpreted in accordance with the laws of the State of
            Washington. Both Parties consent to the jurisdiction and venue of
            the federal court in Washington, D.C. for claims that can be brought
            in such court and for other claims to the jurisdiction and venue of
            the Washington, D.C. Superior Court and the D.C. Court of Appeals.

      5.    Conflicts. To the extent there is a conflict between the terms and
            provisions of this Assignment and Assumption and the Purchase
            Agreement, the terms and provisions of the Purchase Agreement will
            govern.

----------------
(1) Include bracketed clause only if the ****** is listed on Exhibit A.

                                  Exhibit C-1
<PAGE>

      6.    Headings. The headings herein are included for ease of reference
            only and shall not control or affect the meaning or construction of
            the provisions of this Assignment and Assumption.

      7.    Amendments. This Assignment and Assumption cannot be amended,
            supplemented or modified except by an Agreement in writing which
            makes specific reference to this Assignment and Assumption, and
            which is signed by the party against which enforcement of any such
            amendment, supplement or modification is sought.

       The parties hereto have executed this Assignment and Assumption as of the
date first written above.

ASSIGNOR:                              COMSPEC Corporation

                                       By:
                                       Name:
                                       Title:

 ASSIGNEE:                             CLEARWIRE SPECTRUM HOLDINGS LLC

                                       By:
                                       Name:
                                       Title:

 Schedule 1.....List of Assigned and Assumed Leases

                                      C-2<PAGE>

                                                                   EXHIBIT 10.45

                  BUNDLED WIRELESS BROADBAND SERVICES AGREEMENT

            THIS BUNDLED WIRELESS BROADBAND SERVICES AGREEMENT (this
      "AGREEMENT") is made and entered into effective the 23 day of November,
      2005 (the "EFFECTIVE DATE"), by and between America Online, Inc., a
      Delaware corporation ("AOL"), and Clearwire LLC, a Nevada limited
      liability company ("CLEARWIRE"). Clearwire and AOL may be referred to
      herein individually as a "PARTY" and collectively as "PARTIES."
      Capitalized terms used but not defined herein shall have the respective
      meanings given to them in Exhibit A.

            WHEREAS, Clearwire, directly and through its Affiliates, operates
      wireless broadband systems and facilities capable of delivering certain
      wireless broadband data services to customers, including highspeed
      Internet access;

            WHEREAS, AOL is an Internet service provider that offers to its
      subscribers value-added on-line services including email, chat, message
      boards, shopping, instant messaging, internet access and other subscriber
      applications, content, and associated services including premium content
      and functionality using branding owned or controlled by AOL or an AOL
      Affiliate, or using all or a portion of AOL's or an AOL Affiliate's
      network or backend systems;

            WHEREAS, AOL and Clearwire mutually desire to make available the AOL
      Service to End Users in the Initial Markets via the Clearwire Wireless
      Broadband Network; and

            NOW, THEREFORE, in consideration of the foregoing and the promises
      set forth below, and for other good and valuable consideration, the
      receipt and sufficiency of which are hereby acknowledged, AOL and
      Clearwire agree as follows:

1.    MARKETING AND DISTRIBUTION OF THE BUNDLED SERVICE.

      1.1   Bundled Service in Initial Markets. From and after the Deployment
            Date, and thereafter during the Term, AOL shall promote a product
            offering in the Initial Markets, consisting of the AOL Service
            bundled with the Clearwire Wireless Broadband Service and marketed
            as a single product (the "BUNDLED SERVICE").

      1.2   Bundled Service in Additional Markets. From time to time, if AOL and
            Clearwire jointly decide to offer the Bundled Services in markets
            other than the Initial Markets, they may update the attached Exhibit
            F to add such new markets, and the terms of this Agreement shall
            apply thereafter to such additional markets, as though they were
            Initial Markets, unless the Parties agree otherwise.

      1.3   Marketing and Promotion. The Bundled Service shall be co-branded as
            mutually agreed upon by the Parties. In each Initial Market, AOL
            shall have the right to market and promote any and all speed tiers
            offered as part of the Clearwire Wireless Broadband Service in such
            Initial Market. AOL will be responsible for marketing and selling
            the Bundled Service to consumers, which AOL will characterize as its
            preferred fixed wireless broadband solution.

      1.4   Trademark Licenses. For the sole purpose of the co-branding,
            marketing and promoting the Bundled Service, and subject to
            Clearwire's prior written approval of each use of Clearwire
            trademarks or service marks as to content and context, Clearwire
            grants AOL a non-transferable, non-sublicensable, royalty-free
            license to reproduce and display the current Clearwire logo and
            other Clearwire trademarks and service marks. In connection with the
            license granted hereunder, Clearwire shall have the unilateral right
            to establish and enforce such quality standards and

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       1
<PAGE>
            additional terms and conditions concerning the use of its trademarks
            as it deems necessary to reasonably protect its trademarks. Such
            license shall terminate automatically upon the expiration of the
            Term or the earlier termination of this Agreement.

      1.5   The AOL Service. The AOL Service portion of the Bundled Service
            shall consist of all of the features and functionally included in
            the AOL Service. Currently retailed to broadband end users, as
            well as any additional features and functionality that, in the
            future, are retailed to broadband end users as part of the AOL
            Service.

      1.6   The Clearwire Wireless Broadband Service. The Clearwire Wireless
            Broadband Service portion of the Bundled Service shall be a
            connectivity-only service that is provided at a bandwidth that is
            consistent with the bandwidth advertised by Clearwire for the
            Clearwire Wireless Broadband Service. In the Initial Markets, and
            during the Term, the Clearwire Wireless Broadband Service, as
            bundled as part of the Bundled Service, shall not contain any
            promotions, advertisements or references to any other Interactive
            Service.

      1.7   Launch of the Bundled Service. The Parties shall use commercially
            reasonable efforts to launch the Bundled Service in at least one
            Initial Market no later than March 31, 2006, with such launch date
            referred to as the "DEPLOYMENT DATE." The Parties will work together
            to try to launch the Bundled Service in at least one Initial Market
            by February 15,2006. Following the Deployment _ Date, the Bundled
            Service shall be launched in the remainder of the Initial Markets
            during a six (6) month period commencing on the Deployment Date.
            Subject to these parameters, the date for the launch of the Bundled
            Service in each Initial Market will be at AOL's discretion.

      1.8   Implementation Plan. The Parties shall follow the implementation
            plan set forth in Exhibit C ("IMPLEMENTATION PLAN"), attached hereto
            and incorporated herein, for the provision of the Bundled Service.

      1.9   Testing. The Parties shall cooperate with regard to any testing that
            either Party needs to perform prior to the Deployment Date.

      1.10  Target Subscriber Levels. During the Operational Period, (a) AOL
            shall use commercially reasonable efforts to sell the Bundled
            Service to up to twenty percent (20%) of the  Eligible AOL
            Subscribers in aggregate across all the Initial Markets, and (b) the
            Parties will work together to try to cause a migration to the
            Bundled Service of at least five percent (5%) of such Eligible
            AOL Subscribers (the number in clause (b), the "ELIGIBLE AOL
            SUBSCRIBER TARGET").

2.    NETWORK ARCHITECTURE.

      2.1   Broadband Connection. Clearwire will provide End Users with all
            network services, including:

               A.  Configuration of end-users' CPE with Internet-routable IP
                   address; and

               B.  DNS services.

      2.2   Access Transfer Rate. Clearwire shall ensure that the access
            transfer rate of the Bundled Service will provide End Users with a
            minimum average bandwidth per End User of 20 kbps.

      2.3   Network Traffic. Handoff of all End User traffic will be carried by
            Clearwire and delivered directly to the Internet pursuant to
            Clearwire's existing Internet connectivity arrangements. AOL will
            receive traffic from the Internet pursuant to its existing Internet
            connectivity arrangements.

      2.4   Network Authentication. If required by Clearwire's network access
            technology, Clearwire will authenticate End Users to Clearwire's
            broadband access network using a Clearwire-supplied network login,
            verified against the standard AAA (Authentication, Authorization and
            Accounting) functions used by current Clearwire Wireless Broadband
            Service customers. AOL will authenticate End Users to the AOL
            Service using the AOL screen names and passwords.

      2.5   IP Address Ranges. Clearwire will supply users of the Bundled
            Service with Internet-routable (public) IP addresses. Clearwire will
            allocate IP addresses in a manner that allows AOL to identify
            subscribers as End Users. Clearwire will share all such IP address
            ranges and information with AOL in advance of implementation of the
            network.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       2
<PAGE>

3. ECONOMICS.

3.1      Payment of Wholesale Price. Subject to the last three sentences of this
         Section, AOL  shall pay Clearwire, within thirty (30) days after the
         end of each calendar month during the Term, for each individual who is
         an End User during such calendar month, fifty percent (50%) of the
         following: (a) the Average Monthly Service Fee, (b) the average rental
         fee for the CPE charged by Clearwire to consumers in the Initial Market
         in which the End User is located, and (c) the activation fee charged by
         Clearwire to consumers in the Initial Market in which the End User is
         located (collectively, the "Wholesale Price"); provided, however, that
         in no event shall the Wholesale Price exceed the price set forth in
         Exhibit E below for each Retail Pricing Tier in each Initial  Market.
         AOL shall also pay Clearwire, for each CPE that is delivered to an End
         User by Clearwire during such calendar month, a one-time fee equal to
         fifty percent (50%) of Clearwire's cost for the CPE, such amount not to
         exceed $100 (the "CPE  Fee"). For purposes of this Section, End Users
         who are receiving Bundled Services as part of a Promotional Offer (but
         only during the first three (3) months of such Promotional Offer) shall
         be counted as End Users only to the extent that they are paying for
         Bundled Services. All other End Users shall be counted in full,
         regardless of whether they are receiving Bundled Services on a paying,
         promotional or courtesy  basis. As an illustration, if an End User,
         during the End User's first month of Bundled Service, is receiving a
         40% discount under a Promotional Offer, then AOL shall pay Clearwire
         only 60% of the Wholesale Price for such End User for such month.

3.2      Most Favored Pricing. Clearwire agrees that it will offer all Clearwire
         products and services, including without limitation, the Clearwire
         Wireless Broadband Service, to AOL on terms and conditions no less
         favorable in the aggregate than Clearwire provides to any third party
         ISP.

3.3      Responsibility for Costs. AOL assumes responsibility for any bad debt
         incurred in connection with the Bundled Service. Any lost revenue
         resulting from the first three (3) months of a Promotional Offer to an
         End User shall be borne equally by both Parties, with Clearwire's share
         of the lost revenue deducted form AOL's payment of the Wholesale Price.
         In no event shall Clearwire absorb lost revenue to the extent that a
         Promotional Offer to an End User extends longer than three (3) months.
         If Clearwire authorizes a service credit in response to a major outage
         with respect to its system affecting a substantial number of End Users,
         Clearwire shall bear the costs of such service credit.

3.4      Revenue from AOL Premium Products. AOL shall not be obligated to pay
         Clearwire any portion of charges to End Users for AOL Premium Products,
         whether AOL Premium Products are offered separately or as part of the
         Bundled Service.

3.5      Retail Price. AOL shall have the right to determine, in its sole
         discretion: (a) the pricing of the Bundled Service to End Users, (b)
         any Promotional Offers for the Bundled Service, including without
         limitation, free trials for or discounts of the Bundled Service, and
         (c) the rental price of the CPEs. Clearwire shall give AOL at least
         thirty (30) calendar days' advance written notification of any change
         in Clearwire's retail pricing for any element of the Clearwire Wireless
         Broadband Service in the Initial Markets, including any new Retail
         Pricing Tiers that it offers in addition to those listed in Exhibit E.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       3
<PAGE>
3.6      True-Up Fee. Within forty-five (45) days after the end of each six (6)
         month period of the Operational Period (i.e., months 7-12 after the
         Deployment Date, months 13-18 and months 19-24), the Parties will
         determine the number of End Users for such six (6) month period, which
         shall be the sum of the number of End Users who are being charged for
         Bundled Services during each day of such period. If such sum is less
         than six (6) times the Eligible AOL Subscriber Target, then AOL shall
         promptly pay Clearwire an amount equal to the Wholesale Price,
         multiplied by the difference between the Eligible AOL Subscriber Target
         and the average monthly number of charged End Users for such period,
         and then multiplied by six (6) (or, stated as a formula: (Wholesale
         Price) X (Eligible AOL Subscriber Target -- average monthly number of
         charged End Users) X 6). The average monthly number of charged End
         Users for any six-month measurement period shall be the number of End
         Users for such six (6) month period (determined in accordance with the
         first sentence of this Section) divided by six (6). Notwithstanding the
         foregoing, AOL shall not be responsible for reaching the Eligible AOL
         Subscriber Target during any calendar month in which (a) the Network
         Availability is less than 99.8% for that calendar month or (b)
         Clearwire does not fulfill one or more CPE orders for three (3)
         consecutive business days because it does not have available a
         sufficient number of AOL-approved CPE inventory. Once Network
         Availability reaches at least 99.8% or Clearwire obtains a sufficient
         number of AOL-approved CPE inventory, the requirement that AOL reach
         the Eligible AOL Subscriber Target shall be reinstated starting with
         the next full calendar month.

3.7      Billing. AOL shall bill End Users for the (a) Bundled Service, (b) the
         CPE rental, (c) any charges for AOL Premium Products and other
         additional charges associated or in connection with the AOL Service
         (e.g., dial roaming), and (d) if applicable, any charges associated
         with early termination of the Bundled Service and failure to return the
         CPE, as defined in the Bundled Services Agreement. Within ninety (90)
         days of charging an End User's payment method for failure to return the
         CPE, AOL shall remit  directly to Clearwire any payment collected from
         such End User who fails to return the CPE in accordance  with the terms
         of this Agreement and the Bundled Services Agreement.

3.8      Reporting. AOL shall provide to Clearwire, contemporaneously with its
         monthly payment to Clearwire of Wholesale Prices and CPE Fees, a report
         of the number of End Users of the Bundled Service for the preceding
         calendar month, broken down by End Users who are being charged for the
         Bundled  Service and End Users who are benefiting from a Promotional
         Offer. In order to facilitate Clearwire's retrieval of CPEs, AOL's
         report shall also specifically identify the End Users who discontinued
         their use of Bundled Service during or at the end of such calendar
         month. Clearwire shall report to AOL, on a real time or daily basis,
         line item data that would allow AOL to reconcile, End User by End User,
         the number of provisioned users of the Bundled Service. Clearwire shall
         also, on a monthly basis within fifteen (15) days after the last day of
         each calendar month, provide AOL with the following two (2) reports:
         (a) a report that identifies the End Users to whom CPEs were delivered
         during such month, and the End Users from whom returned CPEs were
         received during such month, and (b) a report outlining the Network
         Availability data, broken down on a daily  basis, for the  previous
         calendar month.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       4
<PAGE>

4.       OPERATIONAL TERMS.

4.1      Customer  Service. AOL will provide End Users with  maintenance  and
         support of the Bundled Service according to the provisions set forth in
         Exhibit B - "Customer Service." In order to facilitate AOL's support of
         the Bundled Service, Clearwire will maintain and support the Clearwire
         Wireless Broadband  Network and, under the escalation circumstances
         described in Exhibit B, provide direct support services to End Users to
         address "Tier 2" connectivity  issues, all as more thoroughly described
         in Exhibit B. Both Parties agree to meet one hundred twenty (120) days
         following the launch of the first Initial Market in order to identify
         and address any unexpected operational issues pertaining to Customer
         Service that arise after such initial launch. Furthermore, both Parties
         agree to use commercially reasonable efforts to resolve specific issues
         identified during such meeting to the Parties' mutual satisfaction.

4.2      Delivery of Customer Premises Equipment. Clearwire shall, as and when
         directed by AOL, deliver CPE to End Users for use of the Bundled
         Service, and provide End Users with instructions for installation of
         the CPE. If, following such delivery and installation, a personal visit
         to the End User's premises is necessary in order to enable the End User
         to use the Bundled Service, then AOL shall pay to Clearwire fifty
         dollars ($50) for each such visit, but only to the extent that the End
         Users who receive such visits constitute less than fifteen percent
         (15%) of all End Users to whom Clearwire has delivered CPE. The Parties
         anticipate that End Users will, as a general matter, self-install the
         CPE. Clearwire may separately charge an End User for any installation
         assistance that is requested by the End User. Clearwire will remain the
         owner of the CPEs, will file the requisite property tax returns thereon
         and pay property taxes associated therewith in each applicable state
         and indemnify AOL for all state property tax liability associated
         therewith. In addition, Clearwire may take all depreciation charges for
         the CPE. Clearwire will be responsible for the costs of shipping and
         reclaiming the CPE.

4.3      Deployment of CPE. AOL may, but only in accordance with the terms of
         the Implementation Plan, test and approve CPEs prior to delivery of
         such CPEs by Clearwire to End Users. For the purposes of this Section
         and Exhibit C, "test" shall mean to verify the functionality and the
         interoperability of the CPE with the AOL client software. "Approve"
         shall mean to authorize the CPE for use with the AOL client software.

4.4      Return of CPE. AOL will be solely responsible for reclaiming the CPE
         from persons who are no longer End Users. As part of the Bundled
         Services Agreement, AOL will include the requirement that upon AOL's
         request, the End User shall return the CPE via pre-paid mailers to be
         provided by AOL to Clearwire if and when an End User no longer
         subscribes to the Bundled Service. AOL shall use commercially
         reasonable efforts to reclaim the CPE, and will reserve the right in
         the Bundled Services Agreement to charge End Users for any unreturned
         CPE units. Within forty-five (45) days of execution of this Agreement,
         the Parties will mutually agree upon a reasonable procedure under which
         AOL will send notices to End Users who no longer subscribe to the
         Bundled Service requesting the return of CPEs ("Reclamation
         Procedure"). The Reclamation Procedure shall be AOL's sole obligation
         related to the  return of the CPEs. At no time shall Clearwire be
         entitled to contact any End User regarding such customer's failure to
         return the CPE unit without first obtaining prior written authorization
         from AOL.

4.5      Communications  with End Users. All types of communications between
         Clearwire  and the End User shall be subject to AOL's  prior approval.
         For avoidance of doubt, Clearwire  acknowledges that AOL End Users are
         customers solely of AOL.

4.6      Network Traffic Requirements. Clearwire shall implement bandwidth
         management practices in order to protect the integrity and performance
         of the Clearwire Wireless Broadband Network and to ensure the fair use
         of network resources by all users of the Clearwire Wireless Broadband
         Network. To this end, Clearwire will consult with AOL before and
         during, the implementation of such bandwidth management practices to
         create an optimal user experience on the Clearwire Wireless Broadband
         Network for AOL End Users.

4.7      Network Security. Clearwire shall have sole control over access to and
         security of the Clearwire Wireless Broadband Network. To the extent
         feasible and permitted by law, and at no cost to Clearwire, Clearwire
         will assist AOL in its attempts to identify End Users who violate the
         Bundled Services Agreement by providing AOL with data from servers in
         the form of log files or other forms to identify users of particular IP
         addresses during given time intervals.

4.8      Reports. In order to facilitate the flow of information between the
         Parties regarding the relationship and the  status of the Bundled
         Service, the Parties shall prepare and furnish the periodic reports and
         information identified in the Implementation Plan. Such reports shall
         include a report from AOL that identifies the number of calls fielded
         by AOL for Tier 1 support, and the number of calls forwarded to
         Clearwire for Tier 2 support. Furthermore, the report shall include the
         status of CPEs both shipped and delivered to End Users. The Parties
         agree  to work  together  on an  ongoing basis to  develop  additional
         enhanced reporting as required.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       5
<PAGE>
4.9      Network Outage. Clearwire shall give AOL advance notification of its
         maintenance periods and expected outages, as described in Section 11 of
         Exhibit C. As further defined in Section 11(a) of Exhibit C and subject
         to the limitations included therein, in the event of a Network Outage,
         Clearwire shall notify AOL's Network Operations Center ("NOC") of such
         problem as soon as practicable (including providing the details of such
         problem and the anticipated length of the outage), provide the NOC with
         regular updates as to the status of the resolution of the problem and
         use commercially reasonable efforts to restore the service as soon as
         practicable.

4.10     Services Agreement. AOL shall provide each End User with an End User
         services agreement between each End User and AOL that governs the End
         User's use of the Bundled Service (the "Bundled  Services Agreement").
         The Bundled Services Agreement will, among other things, require each
         End User to assume responsibility for the return of all CPE if and when
         the End User is no longer an End User, and shall include an
         authorization to charge the End User's payment method up to $250 for
         failure to return the CPE. The Parties  shall mutually agree upon the
         then-current value of the CPE to be charged to the End User's payment
         method. The Bundled Services Agreement shall be developed by AOL (which
         AOL may amend from time to time in its sole discretion).

4.11     Software. AOL shall be responsible for all costs associated with the
         development of the AOL Software and the media and materials used to
         install and enable the AOL Software. Clearwire shall be responsible for
         all costs associated with the development of the Clearwire Software.
         Each Party shall not reverse  engineer, decompile or otherwise attempt
         to develop the source code of the any software provided by the other
         Party or otherwise make any changes to such software.

4.12     Clearwire Wireless Broadband Network Performance: Clearwire will
         provide AOL with Network Availability (uptime) statistics. "Network
         Availability" shall mean the total number of hours in a month during
         which monitoring device(s) are able to exchange IP packets between the
         monitoring device(s) site(s) demarcation points and the wireline
         network handoff, divided by the total number of hours in a month. If
         the Clearwire Wireless Broadband Network is unavailable due to Force
         Majeure Events or routine maintenance, such time periods are not
         included in calculating Network Availability, except to the extent that
         such routine maintenance constitutes a Network Outage as defined in
         Exhibit C. The time periods during which there is a Network Outage
         shall be included in calculating Network Availability. With respect to
         network uptime, Clearwire shall guarantee an overall monthly Network
         Availability of not less than 99.8%. Clearwire shall be in breach of
         this guarantee if during the Operational Period, the monthly Network
         Availability is less than 99.8% for any two (2) consecutive months, in
         which case AOL shall not be responsible  for reaching and maintaining
         the Eligible AOL Subscriber Target until Clearwire has achieved the
         guaranteed Network Availability of 99.8% for two (2) consecutive
         months. Furthermore, should the monthly Network Availability fall to
         less than 99.8% for two (2) consecutive months or more times during a
         rolling twelve (12) months time period, AOL shall be relieved of the
         Eligible AOL Subscriber Target for the duration of the Term. Should the
         monthly Network Availability fall below 99.8%, the remedies described
         in the previous two sentences and Section 7.6 of this Agreement shall
         constitute AOL's sole remedies. Notwithstanding the foregoing and for
         avoidance of doubt, nothing contained in this Section shall relieve
         Clearwire's indemnification obligations pursuant to Section 8.2 of
         Exhibit D, to the extent such obligations are triggered by an outage of
         the Clearwire Wireless Broadband Service.

4.13     Order Processing. Clearwire acknowledges that AOL has entered into a
         services agreement with GETCONNECTED, INC., ("GC") whereby GC powers
         AOL's High Speed Internet Options ("HSIO") area through one or more
         websites and a technology  platform provided by GC that presents
         offers, and transmits orders, for third party high speed Internet
         access connectivity services in connection with registration  for the
         AOL Service. AOL and Clearwire shall cooperate with GC to
         accomplish this task. Furthermore, AOL and Clearwire will utilize the
         AOL approved STAR process for all data transfer files that allow for
         secure data transmissions between the Parties, and Clearwire shall
         enter into the STAR agreement set forth at Exhibit G.

4.14     Nondiscrimination. Whether or not explicitly set forth in any other
         Section of this Agreement, Clearwire shall treat all End Users in a
         non-discriminatory manner vis-a-vis Clearwire Customers, and including,
         without limitation, with respect to customer service, billing and
         collections, installation scheduling services, repair time, provision
         of CPE (including return policy), service levels and downtime, quality
         of service, and any and all fees/payments.

4.15     Non-Solicitation. Clearwire shall not engage in any marketing or
         promotional activity or any other effort that targets End Users of the
         Bundled Service in order to encourage or promote said End Users of the
         Bundled Service to switch from or terminate the AOL Service, provided
         that general marketing of Clearwire's service is permissible so long as
         Clearwire does not include in such marketing or promotional  materials
         any language specifically  encouraging customers to switch  from or
         terminate the AOL Service.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       6
<PAGE>

5.    AUDIT RIGHTS. The Parties shall have the right to examine the books and
      records of the other with respect to the Bundled Service, during normal
      business hours, upon not less than ten (10) business days prior written
      notice and not more than once during any twelve (12) month period, to the
      extent required to verify compliance with the terms of this Agreement,
      including with respect to the payment of fees, non-discrimination, and
      Network Availability standard. The Party who initiates the Audit Right
      shall bear the expense thereof, unless the audit demonstrates an
      underpayment of ten percent (10%) or more for the period audited, in which
      event the audited Party shall reimburse the initiator its reasonable costs
      and expenses.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       7
<PAGE>

6.    CANCELLATION OF SERVICE TO END USERS. AOL shall have the sole right to
      suspend, cancel or terminate the AOL Service or the Bundled Service
      provided to any End User at any time. Clearwire may request that AOL
      suspend, cancel or terminate the Bundled Service to an End User either (a)
      in connection with a suspension or termination of this Agreement or the
      AOL Service, or (b) if such service is being used for illegal activities.
      If an End User contacts Clearwire to cancel the Bundled Service, the
      Clearwire Wireless Broadband Service portion of the Bundled Service and/or
      the AOL Service portion of the Bundled Service, Clearwire shall inform
      such End User that cancellation of the Bundled Service or the AOL Service
      must be done through AOL and will then transfer such call to AOL's
      customer service line in accordance with the Implementation Plan. Only AOL
      shall have the right to suspend or terminate the AOL Service to any End
      User for any reason. The Party who is terminating, or requesting the
      termination of, services or whose services are being cancelled shall
      provide reasonable advance notice to the other Party identifying the End
      User whose service is to be cancelled or terminated and specifying the
      reasons, subject to the Party's privacy policies. Clearwire shall provide
      AOL with a weekly report that identifies each End User it intends to
      suspend or terminate (and the reason for such suspension or termination)
      in accordance with its rights under this Agreement. AOL and Clearwire
      shall implement a system to determine whether any service cancellation
      request received from an End User applies to the AOL Service, the
      Clearwire Wireless Broadband Service or both.

7.    TERM; TERMINATION.

      7.1   Term. This Agreement shall commence on the Effective Date and shall
            continue in effect until twenty-four months  after the Deployment
            Date (the "TERM"), unless earlier terminated as provided herein.

      7.2   Termination for Breach. Either Party may terminate this Agreement
            upon written notice at any time in the event of a material breach by
            the other Party which remains uncured after thirty (30) days written
            notice thereof. A material breach shall include, without limitation,
            the failure of the Clearwire Wireless Broadband Network to maintain
            the performance standards set forth in Section 4.12.

      7.3   Termination for Bankruptcy. Either Party may terminate this
            Agreement upon written notice if the other Party (a) ceases to do
            business in the normal course, (b) becomes or is declared insolvent
            or bankrupt, (c) is the subject of any proceeding related to its
            liquidation or insolvency, whether voluntary or involuntary, which
            is not dismissed within ninety (90) calendar days or (iv) makes an
            assignment for the benefit of creditors.

      7.4   Termination for Change of Control. AOL may terminate this Agreement
            upon thirty (30) days prior written notice in the event (a) of a
            change in Control of Clearwire where such Control is acquired,
            directly or indirectly, in a single transaction or series of related
            transactions by a competitive Interactive Service, (b) all or
            substantially all of the assets of Clearwire used to provide the
            Services are acquired by or transferred to any competitive
            Interactive Service, or (c) Clearwire is merged with or into another
            entity or entities that provide Interactive Service.

      7.5   Other Termination. Either Party may terminate this Agreement upon
            thirty (30) days prior written notice if Monthly Churn exceeds four
            percent (4%) for any two consecutive months.

      7.6   Early Termination. In the event of an Excessive Outage for any two
            (2) consecutive months (as defined in Section 11 (d) of Exhibit C).
            AOL may terminate this Agreement without liability by providing
            written notification to Clearwire sixty (60) calendar days in
            advance of the effective date of the termination.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       8
<PAGE>

8.    Effect of Termination. If, during the Term, upon ninety (90) days' written
      notice, Clearwire elects to no longer operate the Clearwire Wireless
      Broadband Service or a comparable service, the Parties shall develop a
      migration plan that provides for the migration of End Users from the
      Bundled Service to an alternate service selected by AOL, provided that AOL
      shall not be liable for payment under Section 3 of this Agreement
      following migration from the Clearwire Wireless Broadband Service. Except
      in the case where Clearwire elects to no longer operate the Clearwire
      Wireless Broadband Service as described in the previous sentence, as of
      the date on which this Agreement expires or is terminated ("END DATE"),
      there shall be no new orders for the Bundled Service, except with respect
      to a three (3) month period after the End Date during which the Parties
      agree to honor any existing marketing or promotional campaigns that were
      deployed prior to the End Date and to take new orders for the Bundled
      Service for End Users responding to such marketing and promotional
      campaigns. Furthermore, following the End Date, Clearwire agrees to
      provide Tier 2 support and continue to provide connectivity services to
      End Users of the Bundled Service for a period of six (6) months.

                                  [END OF PAGE]

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       9
<PAGE>

IN WITNESS WHEREOF, the Parties hereto have executed this Agreement effective as
of the Effective Date, pursuant to due authority. Each Party acknowledges that
it has read this Agreement, understands it, and agrees to be bound by its terms.

            AMERICA ONLINE, INC.,             CLEARWIRE CORPORATION,
              a Delaware corporation            a Delaware corporation

            By: /s/ Jeremy Legg               By: /s/ R. Gerard Salamme
                ---------------------             ---------------------------
            Name: Jeremy Legg                 Name: R. GERARD SALAMME

            Title: Vice President             Title: Ex. V. P.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       10
<PAGE>

                                    EXHIBITS
                                       TO
                      BUNDLED BROADBAND SERVICES AGREEMENT

<TABLE>
<CAPTION>
EXHIBIT      DESCRIPTION
-------      -----------
<S>          <C>
A            DEFINITIONS

B            CUSTOMER SERVICE

C            IMPLEMENTATION PLAN

D            STANDARD LEGAL TERMS AND CONDITIONS

E            RETAIL PRICING TIERS

F            INITIAL MARKETS

G            STAR AGREEMENT
</TABLE>

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       11
<PAGE>

                                   EXHIBIT A
                                  DEFINITIONS

"AFFILIATE" means, with respect to a person, any person that directly or
indirectly, through one or more intermediaries, Controls, is Controlled by, or
is under common Control with such person.

"AOL PREMIUM PRODUCTS" means, and is limited to, separate and stand-alone
products and services offered by AOL to End Users that are not included (either
now or in the future) as part of the AOL Service. Examples include, but are not
limited to: AOL Internet Phone Service (a.k.a. Voip) and AOL Call Alert.

"AOL SOFTWARE" means the client software developed and distributed by AOL or an
AOL Affiliate (including any modifications, enhancements or derivatives
thereto) that enables the AOL Welcome Screen, email service, instant messaging
service, and/or other content and services provided by AOL and its Affiliates
and third-party suppliers.

"AOL Service" means the U.S. version of the America Online(R) brand commercial
online service, including any special versions thereof, including without
limitation, the "AOL Latino" and "AOL for Small Business" brands.

"AVERAGE MONTHLY SERVICE FEE" means the sum of all monthly service fees that
Clearwire charged consumers for service in each Retail Pricing Tier (other than
promotional services) in the Initial Market in which End User is located that is
substantially identical to the Clearwire Wireless Broadband Service, divided by
the total number of consumers purchasing the substantially identical service
(other than promotional services) in that Initial Market during the preceding
six (6) months. For purposes of calculating the Average Monthly Service Fee, the
initial six-month period for each Initial Market shall begin on the launch date
for that particular Initial Market.

"BUNDLED SERVICE" has the meaning set forth in Section 1.1 of the Agreement.

"BUNDLED SERVICES AGREEMENT" has the meaning set forth in Section 4.10 of this
Agreement.

"CLEARWIRE CUSTOMERS" means subscribers to any Clearwire products and services.

"Clearwire Wireless Broadband Network" means the network of wireless equipment
and computer infrastructure operated and maintained by Clearwire that is to be
used to deliver the wireless connectivity portion of the Bundled Service.

"CLEARWIRE WIRELESS BROADBAND SERVICE" means the wireless high-speed data
transport and Internet connectivity services to be provided by Clearwire
hereunder using the Clearwire Wireless Broadband Network and CPE provided by
Clearwire.

"CONTROL" means the possession, directly or indirectly, of the power to direct
or cause the direction of the management and policies of such entity, whether
through the ownership of voting securities, by contract, management agreement or
otherwise.

"CUSTOMER PREMISES Equipment" or "CPE" means a stand-alone external device
provided by Clearwire that plugs into a 110 volt and connects to a computer or
router and enables a wireless connection to the Clearwire Wireless Broadband
Network.

"DEPLOYMENT DATE" has the meaning set forth in Section 1.7 of this Agreement.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       12
<PAGE>

"END USER" means an individual residential customer in the Clearwire Wireless
Broadband Network who subscribes to the Bundled Service, whether on a paying,
promotional or courtesy basis.

"ELIGIBLE AOL SUBSCRIBERS" means subscribers to the AOL Service in the Initial
Markets who (a) have computers with a Windows 2000 or Windows XP operating
system and have an 8.0 or higher AOL Service client version and (b) are not
currently accessing the AOL Service client through any broadband service
sessions as determined by AOL. Within forty-five (45) days of execution of this
Agreement but in any event no later than ten (10) business days prior to
Deployment Date, AOL and Clearwire will agree to the number of Eligible AOL
Subscribers in each of the Initial Markets as of their respective launch dates.
This number will remain fixed for the duration of the Agreement.

"ELIGIBLE AOL SUBSCRIBER TARGET" has the meaning set forth in Section 1.10 of
this Agreement.

"FORCE MAJEURE EVENTS" means the following: acts of God or other catastrophe,
natural or otherwise; any law, order, regulation, direction, action or request
of the United States government or any other government, including state and
local governments having jurisdiction over the Parties, or any department,
agency, commission, bureau, corporation or other instrumentality of any one or
more said governments, or of any civil or military authority; national
emergency; insurrection; riot; war, strike, acts of terrorism, lock-out; energy
shortage; material shortage; or other cause beyond the Parties' reasonable
control; provided, however, that the non-performing Party is without fault in
causing such default or delay, and such default or delay could not have been
prevented by reasonable precautions and cannot reasonably be circumvented by the
non-performing Party through the use of alternate sources, workaround plans or
other means.

"IMPLEMENTATION PLAN" has the meaning set forth in Section 1.8 of this
Agreement.

"INITIAL MARKETS" means the markets described on the attached Exhibit F.

"INTERACTIVE SERVICE" means one or more of the following Internet or online
services: (a) online or Internet connectivity services (each, an "ISP"); (b) an
interactive site or service featuring a broad selection of aggregated third
party interactive content (or navigation thereto) (e.g., an online service or
search and directory service) and/or marketing a broad selection of products
and/or services across multiple interactive commerce categories; or (c)
communications software capable of serving as the principal means through which
a user creates, sends or receives electronic mail or real time or "instant"
online messages (whether by telephone, computer, wireless or other means).

"MONTHLY CHURN" means the number of End Users (exclusive of the Excluded End
Users) on the last day of the calendar month less the number of End Users
acquired during the month less the number of End Users (exclusive of the
Excluded End Users) on the first day of such calendar month) divided by the
number of End Users on the first day of such calendar month. "EXCLUDED END
USERS" are those that are either (a) denied access to the Clearwire Wireless
Broadband Services due to failure to pay or breach of the Bundled Services
Agreement; or (b) not yet being charged for Bundled Service as of the
commencement of the month in which the Monthly Churn is measured.

"NETWORK ACCESS POINT" means, with respect to either Party, the points at which
such Party connects to the Internet. For example, each Party will use its
existing or successor interconnections with its Internet connectivity providers
to send/receive Bundled Service traffic to/from the Internet. Notwithstanding
anything to the contrary contained herein, neither Clearwire nor AOL will be
responsible for costs, traffic performance or maintenance of network equipment
beyond the point at which it or its Internet connectivity provider
interconnects with the Internet.

Bundled Broadband Service Agreement               AOL AND CLEARWIRE CONFIDENTIAL

                                       13

<PAGE>

"NETWORK AVAILABILITY" has the meaning set forth in Section 4.12 of this
Agreement.

"NETWORK OUTAGE" means the Clearwire Wireless Broadband Service becomes
unavailable as a part of the Bundled Service or fails to comply with the
applicable specifications for the Clearwire Wireless Broadband Service.

"OPERATIONAL PERIOD" means months 7-24 after the Deployment Date.

"PROMOTIONAL OFFER" means, and is limited to, an offer to an End User to acquire
Bundled Service at a Discounted Rate. For avoidance of doubt, "DISCOUNTED RATE"
shall mean any available offer of the Bundled Service that includes a price
point made available for a limited period of time and is below the average price
available for the comparable service offered by a Party.

"RETAIL PRICING TIER" means the price for each of the following service speed
tiers offered by Clearwire to its retail customers: Clear Value and Clear
Premium

"TAXES" include, but are not limited to, any sales or use tax, or any
assessment, levy, or charge in the nature of a tax (other than taxes on either
Party's net income, net worth, capital stock, franchise, property, items of tax
preference or minimum tax, conduct of business or similarly-based taxes) imposed
by a government authority as a result of having provided services pursuant to
the Agreement.

"TERM" has the meaning set forth in Section 7.1 of this Agreement.

Bundled Broadband Service Agreement              AOL AND CLEARWIRE CONFIDENTIAL

                                       14
<PAGE>
                                   EXHIBIT B
                                CUSTOMER SERVICE
<TABLE>
LEVEL OF CUSTOMER CARE      CLEARWIRE RESPONSIBILITIES      AOL RESPONSIBILITIES
<S>                         <C>                             <C>
Tier 0                      Prepare FAQs that address       Prepare FAQs that address
                            End User questions regarding    End User questions regarding
                            the following:                  the following:

Tier 0 consists of          o Clearwire support             o Billing related to the AOL
"e-care" in the form of     software functionality.         Service; including dial-up
Frequently Asked Questions                                  roaming charges, communications
(FAQS) that are accessed    Publish and maintain FAQ area   surcharges
via the Clearwire support   of the Clearwire support
software.                   software and Clearwire help     o Custom browser;
                            site.
Customer must have basic                                    o Login/Password;
internet connectivity to
access Tier 0 services.                                     o Email;

FAQs will include contact                                   o Chat (if applicable); and
information for End User
(phone numbers etc.).                                       o Other AOL-specific services.
-----------------------------------------------------------------------------------------------------------
Tier 1                      N/A                             Provide support for AOL's proprietary
                                                            or customized browser.
Specific "800" customer
service will be                                             Provide email, chat functions or voice
established to handle                                       support for customers contacting AOL to
questions from End Users.                                   resolve AOL related service issues,
                                                            including premium service issues.
Tier 1 consists of one-
to-one interaction with                                     Provide email address, or telephone
a customer service                                          number for Clearwire customer care to
representative via email,                                   contact AOL customer service representatives
chat or telephone.                                          to resolve questions relating to the following:

Questions received by                                       o Login/Password
Clearwire that relate to
the AOL Service will be                                     o Billing related to the Bundled Service and/or
cold transferred to AOL.                                      AOL Service

Questions received by AOL                                   o Email;
that relate to the
Clearwire Wireless                                          o Chat; and
Broadband Service will be
cold transferred to                                         o Other AOL specific services.
Clearwire.
                                                              - Very basic inquiries concerning the Clearwire
                                                                Wireless Broadband Service including: modem
                                                                plugged in, modem lights flashing, and a list
                                                                of other common issues supplied to AOL by
                                                                Clearwire
-----------------------------------------------------------------------------------------------------------
Tier 2                      Answering of inbound calls      N/A
                            regarding the Clearwire
Tier 2 is an escalated      Wireless Broadband Service
level of care that is       at the same call response
defined only for            level as afforded Clearwire
Clearwire.                  Customers.

Tier 2 consists of one-     Provide email address, chat
on-one contact between      functions or telephone
customer service            number for End Users to
representatives and End     contact customer service
Users.                      representative to resolve
                            questions relating to the
Support will escalate to    following:
Tier 2 only in the case
of RF signal issues,        o Registration for the
which must be confirmed     Clearwire Wireless
by Tier 1 inquiries prior   Broadband Service;
to escalation to Tier 2.
                            o Connectivity (TCP/IP);

                            o Clearwire support software
                              functionality.

                            Resolve questions or problems
                            that are escalated from Tier 1
                            customer service representatives.
                            End Users cannot contact Tier 2
                            directly.

                            o If Tier 2 customer service
                              representative is unable to
                              resolve problem and/or
                              problem relates to network
                              operations, a trouble ticket
                              will be issued and directed
                              to Tier 3 (ESC) support for
                              resolution. Tier 2 customer
                              service representatives will
                              warm transfer calls to AOL
                              Tier 1, if it is determined
                              that the customer problem
                              relates to Tier 1 issues.

                            o Direct, one-to-one End User
                              contact will not proceed/
                              escalate above Tier 2.
-----------------------------------------------------------------------------------------------------------
Tier 3                      Resolve problems that are       Resolve problems that are escalated from
                            escalated from Tier 2 customer  Clearwire customer care in the form of
Tier 3 customer care is     care.                           trouble tickets or from lower levels of
at the network operations                                   AOL customer care.
level (ESC) and addresses   Contact between Clearwire and
problems that could not be  AOL Tier 3 organizations may    Contact between Clearwire and AOL Tier 3
resolved at the Tier 2      be required to resolve certain  organizations may be required to resolve
level.                      problems.                       certain problems.

Clearwire is responsible
for network operations.
-----------------------------------------------------------------------------------------------------------
</TABLE>
Bundled Broadband Service Agreement               AOL AND CLEARWIRE CONFIDENTIAL
                                       15

<PAGE>

                                   EXHIBIT C
                              IMPLEMENTATION PLAN

The Parties acknowledge that this Exhibit C is intended to provide a baseline
implementation plan that is subject to modification to account for the facts
and circumstances of the individual regions where the Bundled Service is to be
deployed. The Parties will discuss such modifications as are necessary to
account for variations among regions. To the extent there is a conflict between
this Exhibit C and the provisions of the base Agreement the provisions of this
Exhibit C shall control.

     1. SUBSCRIBER ACQUISITION

            (a) Acquisition Channels. AOL will serve as the sole acquisition
        channel for the Bundled Service including but not limited to online, in
        and out-bound telemarketing and direct mail channels. AOL and Clearwire
        agree to jointly implement an automated approach to "bind" AOL and the
        Clearwire account information together to permit seamless order
        processing and customer management. Binding refers to the electronic
        linkage of information between the AOL and Clearwire back office systems
        such that a unique data key from one entity uniquely maps to a customer
        record in the other entity.

     2. ORDER PROCESSING

            To be determined by future agreement of the Parties.

     3. FULFILLMENT AND INSTALLATION

            (a) Installation Process. Clearwire shall provide all CPE (modem)
        fulfillment.

            (b) Supported Modems: Clearwire shall provide AOL with a list of
        approved modems for use on its network. Upon the release of any new
        model or upgrade, Clearwire shall furnish AOL with the requested
        quantity of samples of the CPE for testing ("Samples") in order to
        ensure the interoperability and functionality of the CPE with the AOL
        Service and client software. Samples as well as configuration and
        upgrades ("Product Upgrades") must be tested and accepted by AOL prior
        to placing the new model or upgrade on the list of approved modems. For
        avoidance of doubt, no new model or upgrade should be shipped until the
        Sample or Product Upgrade has been accepted and approved by AOL. In the
        event that a problem is detected with a certified modem that impacts AOL
        customers, AOL and Clearwire agree to jointly work with the modem
        manufacturer to address the problem and to institute mutually agreeable
        field workarounds until such problem is corrected.

            (c) Self Install Kits:

                    (i) Clearwire shall select the appropriate CPE (modem) to be
                included in a self-install kit that will be shipped to End Users
                or delivered by professional installers.

                    (ii) Self-installation kits should be shipped on a daily
                basis determined by daily-completed orders for the Bundled
                Service.

                    (iii) Clearwire will use commercially available ground
                shipping such that the delivery of the self-install kit to an
                End User shall average three (3) business days from the date of
                Clearwire's completed order for such End Users.

            (d) Network Access Login. Clearwire is responsible for IP network
        connectivity.

     4. NETWORK SERVICES, TRAFFIC BACKHAUL AND NETWORK INTERCONNECTION

            (a) End User Network Configuration. Routable IP addresses will be
        provided to End Users by Clearwire from general pools managed by
        Clearwire. Clearwire will assign IP addresses to End Users from a
        dedicated address pool and share information about that IP address pool
        with AOL. These addresses and other required network configuration (DNS
        server addresses) will be provided by Clearwire to End Users during PPP
        negotiations for authentication and session establishment to the
        Clearwire Wireless Broadband Network.

            (b) Traffic Delivery to AOL. Clearwire shall transport all AOL-bound
        traffic to the Internet for transport to an AOL point of presence. All
        other traffic that originates from End Users will be handled to a
        Clearwire-specified GSP for transport to Internet destinations. The
        Parties shall work together to provide optimal traffic handoff and
        peering arrangements.

            (c) Network Access: Clearwire will provide the following:

                -  Clearwire Wireless Broadband Network access in an Initial
                   Market at all the speed tiers being offered by Clearwire in
                   such Initial Market

                -  NextNet Expedience Provisioning Server Software which allows
                   provisioning and management of End User CPE equipment with
                   the ability to control CPE remotely for troubleshooting, with
                   additional troubleshooting procedures to be determined by
                   future agreement of the Parties

                -  As soon as technically available, a "view only" access to
                   network management and element management systems (for tech
                   support) SNMP elements

                -  As soon as technically available, a "view only" access to
                   performance monitoring reports and systems

                -  Ability to manage End User service levels in a manner
                   consistent with the requirements of the Agreement through
                   Clearwire's provisioning server

                -  Clearwire to provide IP carriage (the "Transit") for AOL
                   subscribers. The payment shall be calculated as a
                   "pass-through" on the Clearwire transit rate from Clearwire's
                   upstream for each market on a pmbs rate.

            (d) Security, Traffic Management and Port-Blocking Policies: In
        fulfilling its commitment to provide network access, Clearwire will have
        sold discretion to implement appropriate security, traffic management
        and port-blocking policies, provided that such activities are not
        inconsistent with Section 4.6 of the Agreement.

     5. SUPPORT SERVICES

            Clearwire will provide AOL with the following:

                o  Training (e.g., customer service, installation, CPE)

                o  Marketing support (e.g., information about service
                   capabilities)

     6. REPORTING

        Operational Reporting: In order to most effectively manage the overall
        customer experience, AOL and Clearwire shall mutually work to define
        reports that track these and other metrics on the reporting interval
        indicated below:

              (i)  Number of End Users sent fulfillment kits in anticipation of
                   service turn up (weekly);

             (ii)  Number of End Users who are successfully installed with the
                   Bundled Service (weekly);

            (iii)  Provisioning/installation intervals (monthly);

             (iv)  Network latency (monthly);

              (v)  Network packet loss (weekly);

             (vi)  Network availability (monthly);

            (vii)  Number of customer care calls related to AOL (weekly);

                   Service down time and outages (weekly);

                   Backhaul and peering connection utilization (weekly);

                   Connection failure rate (daily by AOL);

                   Login failure rate (daily by AOL);

                   Average speed detect (daily by AOL);

                   Abnormal disconnect rate (daily by AOL); (MJL)

           (viii)  Number of customer care calls transferred to AOL (weekly);
                   and

             (ix)  Average speed of answer (weekly).

        Additionally, AOL and Clearwire may, on an as needed basis, work
        together to develop additional reports.

     7. CUSTOMER SUPPORT AND MAINTENANCE

            (a) NOC to NOC Communications: Clearwire will notify AOL via phone
        and email (if by email, to aolnet-headsup@listserv.sup.aol.com) of any
        outage of central offices in which the Bundled Service has been
        deployed. All notifications will include at a minimum:

                1. Brief problem description

                2. Geographical region affected

                3. Expected number of impacted End Users

                4. Ticket number used to track the problem

                5. Begin time for the problem

                6. Expected date and time of resolution

            (b) Clearwire Customer Support: Clearwire agrees to maintain an
        average service level of answering 70% of calls within 60 seconds.
        Furthermore, Clearwire agrees that its average hold time prior to
        answering a call for an AOL customer will average less than 5 minutes on
        hold.

        Clearwire also agrees to work with AOL to share customer care reports
        detailing:

                1. The hold times experienced on calls transferred from AOL to
                   Clearwire.

                2. The number of handled calls transferred from AOL to
                   Clearwire.

                3. The number of abandoned calls transferred from AOL to
                   Clearwire.

     8. AVAILABILITY OF BACK OFFICE SYSTEMS

            Due to the criticality of timely back office data exchange between
        AOL and Clearwire, both Parties will provide on call 24x7 support for
        these systems. Clearwire shall use commercially reasonable efforts to
        provide the same operational level of support to AOL for back office
        systems that it does for network connectivity problems. AOL will be
        given an escalation contact for any issues related to: back office
        systems, network connectivity, and authentication.

     9. CHANGE MANAGEMENT

            Clearwire and AOL mutually acknowledge that effective change
        management is imperative in providing customers with a high quality
        product. Therefore, the Parties agree to mutually work together to
        define a change management and approval process. Minimum notification
        windows are likely to be instituted depending on the size (for example
        "small," "medium," or "large") of the change.

            As part of the implementation of this Agreement, the following
        sections will drive day-to-day operations between AOL and Clearwire.

     10. MEETINGS

            (a) Weekly Meetings. During the transitional period (to be
        determined by both Parties), weekly meetings should be held by
        operational personnel from each Party via conference call to discuss
        operational, day-to-day issues that may arise in connection with the
        provisioning of Clearwire Wireless Broadband Service hereunder until
        both Parties agree that weekly meetings are no longer deemed necessary.

            (b) Quarterly Meetings. Upon the conclusion of weekly meetings, for
        the remainder of the Term, the Parties shall agree to quarterly meetings
        to be held by operation personnel from each Party via conference call to
        discuss operational, day-to-day issues that may arise in connection with
        the provisioning of Clearwire Wireless Broadband Service hereunder.

     11. TROUBLE SUPPORT

            (a) Routine Maintenance. Clearwire shall perform routine maintenance
        sufficient to keep the Clearwire Wireless Broadband Network performing
        in accordance with all applicable specifications, which shall be
        delivered by Clearwire to AOL within forty-five (45) days following
        execution of this Agreement but in any event no later than ten (10)
        business days prior to Deployment Date. Clearwire shall provide at least
        five (5) business days notification to AOL prior to scheduling routine
        maintenance (i.e., maintenance for which a market-wide interruption of
        service is not anticipated) on the Clearwire Wireless Broadband Network.
        Notifications for scheduled maintenance shall be communicated in
        accordance with procedures to be agreed upon by Clearwire and AOL within
        forty-five (45) days following execution of this Agreement but in any
        event no later than ten (10) business days prior to Deployment Date.
        Such notification from Clearwire shall include the estimated start time
        and date, estimated finish time, description of work to be performed,
        and identification of the locations that shall be affected. Routine
        maintenance shall only be performed during off-peak hours, between 0000
        and 0400 local time of the Market in which the maintenance shall occur
        ("Scheduled Maintenance Period"), excluding holidays, and shall not
        interrupt or have a disruptive impact on the performance of the
        Clearwire Wireless Broadband Network. Any routine maintenance that may
        result in a market-wide interruption of service shall be coordinated
        with the AOL NOC with at least twenty (20) days prior written notice.
        Any routine maintenance occurring outside the Scheduled Maintenance
        Period shall constitute a Network Outage. In the event that Clearwire
        fails to give AOL proper notice for routine maintenance, the full period
        of such routine maintenance shall constitute a Network Outage.

            (b) Emergency Maintenance. Clearwire shall use its best efforts to
        notify AOL by e-mail and telephone in accordance with the then-current
        escalation list as soon as possible prior to commencing emergency
        maintenance. When emergency maintenance is underway and Clearwire
        believes that it may exceed the estimated finish time, Clearwire shall
        notify AOL promptly. Any emergency maintenance that exceeds the
        estimated finish time shall constitute a Network Outage, provided that
        Clearwire did not notify AOL that such maintenance may exceed the
        estimated finish time. In the event that Clearwire fails to give AOL
        advance notice, however brief, of any necessary emergency maintenance,
        the full period of such emergency maintenance shall constitute a Network
        Outage.

            (c) Unplanned Outage. In the event there is an unplanned outage on
        the Clearwire Wireless Broadband Network, Clearwire shall notify AOL as
        soon as possible via e-mail and telephone in accordance with the
        then-current escalation list. Clearwire shall provide AOL with the
        applicable details regarding the outage in order to avoid AOL
        establishing trouble tickets related to such outage, including the
        number of customers affected, the telephone numbers affected, the nature
        of the outage, anticipated restoration time, updates on the restoration
        time, the closure of the outage and the reason for the outage. For
        avoidance of doubt, an outage as described in this Section 11(c) shall
        constitute a Network Outage.

            (d) Excessive Outage. An "EXCESSIVE OUTAGE" shall be defined as
        either a four (4) consecutive hours of Network Outage or (b) twelve (12)
        cumulative hours of Network Outage in any thirty (30) calendar day
        period.

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                                    EXHIBIT D

                      STANDARD LEGAL TERMS AND CONDITIONS

1. [RESERVED]

2.COMPLIANCE WITH LEGAL REQUIREMENTS. Each Party shall comply with all material
requirements of laws, statutes, treaties, ordinances, regulations, orders,
judgments and decrees ("LEGAL REQUIREMENTS") applicable to its performance under
this Agreement. AOL and Clearwire will cooperate in developing and implementing
procedures for addressing emergencies and complying with any applicable rule,
law or regulation set forth in the Communications Act of 1934, Electronic
Communications Privacy Act, Digital Millennium Copyright Act and any other Legal
Requirements.

3. [RESERVED].

4. CONFIDENTIAL INFORMATION.

4.1 Confidential Information. During the Term, Clearwire and AOL may disclose to
one another Confidential Information. For purposes of this Agreement,
Confidential Information shall include, but is not limited to, the terms of this
Agreement, studies, reports, records, books, contracts, instruments, surveys,
discoveries, ideas, concepts, know-how, techniques, designs, specifications,
drawings, blueprints, diagrams, models, prototypes, samples, flow charts, data,
computer data, disks, diskettes, tapes, computer programs or other software,
business plans, marketing plans, financial data, projections, personnel data,
collection data, price changes, forecasts, network architecture, proprietary
technology, parental controls, and other information supplied by or on behalf of
a Party (whether prepared by such Party, its agents, contractors, advisors or
otherwise) relating to its business (including any of its products), inclusive
of information developed from or based on any of the foregoing, including
reports, information packages, memoranda, and transmittal letters, regardless of
whether such information is in written, oral, electronic or other tangible or
intangible form and any other information that is, or should be reasonably
understood to be, confidential or proprietary to the disclosing Party. All such
Confidential Information shall remain the sole property of the disclosing Party.
The receiving Party agrees that it will use such Confidential Information only
in the performance of its obligations under this Agreement and will take
reasonable steps to prevent disclosure of such Confidential Information, other
than to its employees, contractor and agents who must have access to such
Confidential Information for such receiving Party to perform its obligations
hereunder, and who will each agree to comply with this Section and independent
third party auditors that agree in writing to comply with confidentiality
requirements reasonably comparable to those set forth in this Section. At a
minimum, the receiving Party shall protect the Confidential Information of the
disclosing Party with the same degree of care used to protect its own
confidential information, but in any event no less than a reasonable degree of
care, for a period from the date hereof until three (3) years after the
expiration or termination of this Agreement. Confidential Information shall not
include information which (i) is or becomes generally known to the public other
than through an act or omission of the receiving Party or any of its directors,
officers, employees, agents, accountants, counsel, or other advisors; (ii) was
lawfully in the receiving Party's possession prior to the disclosure hereunder
and not subject to independent confidentiality obligations; (iii) is disclosed
to the receiving Party by a third party who was not violating any obligation of
confidentiality to the disclosing Party; or (iv) was independently developed by
the receiving Party or such Party's directors, officers, employees, agents,
accountants, counsel, or other advisors. Notwithstanding the foregoing, either
Party may make a disclosure containing Confidential Information without the
consent of the other Party, to the extent such disclosure is required by law,
rule, regulation or government or court order. In such event, the disclosing
Party will to the extent possible provide at least five (5) business days prior
written notice of

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<PAGE>

such proposed disclosure to the other Party. Further, in the event such
disclosure is required of either Party under applicable laws, rules or
regulations, such Party will (a) redact mutually agreed-upon portions of the
Confidential Information to the fullest extent permitted under applicable laws,
rules and regulations, and (b) submit a request to the applicable governing body
that such Confidential Information be held in the strictest confidence to the
fullest extent permitted under such applicable laws, rules or regulations.
Except as required by law, rule, regulation or government or court order, the
Parties also agree to keep confidential and not disclose the terms and
conditions of this Agreement.

4.2 End User Data; Clearwire Customer Data. The term Confidential Information
shall also include personally identifiable information relating to any End User
or Clearwire Customer. Clearwire shall own all Confidential Information that it
collects from prospective, actual and former Clearwire Customers. AOL shall own
all Confidential Information that it collects from prospective, actual and
former End Users. Where both Parties collect the information from the same
prospective, actual or former customer in a manner not violating this Agreement,
both Parties shall own such information, without any duty to the other Party.
Each Party shall abide by the terms of any applicable Legal Requirement
regarding the privacy rights of End Users. Notwithstanding anything in this
Agreement to the contrary, upon expiration or termination of this Agreement, (i)
Clearwire may use End User Confidential Information for the purpose of
terminating the Clearwire Wireless Broadband Service, retrieving any CPE, and
continuing any collection activities; and (ii) AOL may use End User Confidential
Information to terminate the AOL Service or transition End Users to an
alternative transport provider (including AOL).

4.3 Return of Confidential Information. Following termination or expiration of
this Agreement, each Party receiving Confidential Information pursuant to this
Agreement will, at the disclosing Party's option, return or destroy (and so
certify to the disclosing Party) all tangible material embodying Confidential
Information (in any form or medium and including, without limitation, all
summaries, copies and excerpts of Confidential Information) at any such time as
the disclosing Party may so request.

5. REPRESENTATIONS AND WARRANTIES.

5.1 AOL Representations and Warranties. AOL hereby represents and warrants that
it is a corporation duly organized and validly existing under the laws of
Delaware and has all necessary power and authority to carry on its business as
presently conducted. AOL has all necessary power and authority to enter into
this Agreement and to carry out its obligations hereunder.

5.2 Clearwire Representations and Warranties. Clearwire hereby represents and
warrants to AOL that Clearwire is a corporation duly organized and validly
existing under the laws of Delaware and has all necessary power and authority to
carry on its business as presently conducted. Clearwire has all necessary power
and authority to enter into this Agreement and to carry out its obligations
hereunder.

6. DISCLAIMER OF WARRANTIES. EXCEPT AS EXPRESSLY STATED TO THE CONTRARY HEREIN,
EACH PARTY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE OR OTHERWISE, OTHER THAN THOSE WARRANTIES (IF ANY) WHICH ARE IMPLIED BY
AND INCAPABLE OF EXCLUSION, RESTRICTION, OR MODIFICATION UNDER THE LAWS
APPLICABLE TO THIS AGREEMENT.

7. LIMITATION OF LIABILITY NEITHER PARTY SHALL HAVE ANY LIABILITY WHATSOEVER FOR
ANY INCIDENTAL, CONSEQUENTIAL, PUNITIVE, SPECIAL OR OTHER INDIRECT DAMAGES
SUFFERED BY THE OTHER, EVEN IF INFORMED IN ADVANCE OF THE POSSIBILITY OF SUCH
DAMAGES. NOTWITHSTANDING THE FOREGOING, SUCH LIMITATIONS SHALL NOT

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APPLY WITH RESPECT TO (i) DAMAGES WITH RESPECT TO CLAIMS THAT ARE THE SUBJECT OF
INDEMNIFICATION PURSUANT TO SECTION 8 OF THIS EXHIBIT D, AND (ii) DAMAGES CAUSED
BY A PARTY'S BREACH OF ITS CONFIDENTIALITY OBLIGATIONS UNDER SECTION 4.1 OF THIS
AGREEMENT. THE PARTIES ACKNOWLEDGE AND AGREE THAT AMOUNTS PAID TO THIRD PARTIES
BY A PARTY FOR A CLAIM THAT IS THE SUBJECT OF INDEMNIFICATION UNDER SECTION 8 OF
THIS EXHIBIT D SHALL BE DEEMED TO BE DIRECT DAMAGES.

8. INDEMNIFICATION.

8.1 AOL Indemnity. AOL shall defend, indemnify and hold harmless Clearwire, its
Affiliates, and their respective officers, directors, employees, and agents and
their respective permitted successors and assigns (each a "CLEARWIRE
INDEMNIFIED PARTY") against any claim, suit or proceeding brought by a third
party based on (a) a claim that the AOL Software infringes a U.S. copyright,
trade secret, trademark or service mark, patent, or other intellectual property
right and (b) a material breach of AOL's obligations under the Agreement. AOL
may not enter into any settlement of any claims to the extent that such
settlement would have a material adverse effect on a Clearwire Indemnified Party
without the prior written approval of such Clearwire Indemnified Party. If such
a claim has occurred, or in AOL's opinion is likely to occur, AOL may, at its
option and expense, either: (i) procure for Clearwire the right to continue
using the allegedly infringing software; or (ii) replace or modify the same so
that they become non-infringing, provided any such modifications do not
materially alter the operation or functionality of the same.

8.2 Clearwire Indemnity. Clearwire shall defend, indemnify and hold harmless
AOL, its Affiliates, and their respective officers, directors, employees, and
agents and their respective permitted successors and assigns (each an "AOL
INDEMNIFIED PARTY" against any claim, suit or proceeding brought by a third
party based on (a) a claim that the Clearwire Software or Clearwire Wireless
Broadband Network infringes a U.S. copyright, trade secret, trademark or service
mark, patent, or other intellectual property right; and (b) a material breach
of Clearwire's obligations under the Agreement. Clearwire may not enter into
any settlement of any claims to the extent that such settlement would have a
material adverse effect on an AOL Indemnified Party without the prior written
approval of such AOL Indemnified Party. If such a claim has occurred, or in
Clearwire's opinion is likely to occur, Clearwire may, at its option and
expense, either: (i) procure for AOL the right to continue using the allegedly
infringing software or services; or (ii) replace or modify the same so that
they become non-infringing, provided any such modifications do not materially
alter the operation or functionality of the same.

9. MISCELLANEOUS.

9.1 Independent Contractors. Clearwire and AOL are independent contractors. This
Agreement shall not be interpreted or construed to create an association, joint
venture or partnership between Clearwire and AOL or to impose any liability
attributable to such a relationship upon either such Party.

9.2 Notices. All notices, requests, demands, and determinations under this
Agreement (other than routine operational communications or as otherwise
specifically set forth herein), shall be in writing and shall be deemed duly
given (i) when delivered by hand, (ii) when delivered by e-mail, (iii) one (1)
business day after being given to an express, overnight courier with a reliable
system for tracking delivery, (iv) when sent by confirmed facsimile with a copy
delivered by another means specified in this Section, or (v) four (4) business
days after the day of mailing, when mailed by United States mail, registered or
certified mail, return receipt requested, postage prepaid, and addressed as
follows:

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<PAGE>
              If to AOL:

                    America Online, Inc.
                    22270 Pacific Boulevard
                    Dulles, Virginia 20166
                    Attention: Vice President Business Development Access
                               Marketing
                    Fax: (703) 265-1206

              with a copy to:

                    America Online, Inc.
                    22000 AOL Way
                    Dulles, Virginia 20166
                    Attention: Deputy General Counsel
                    Fax: (703) 265-2208

              If to Clearwire:

                    Clearwire Spectrum Holdings LLC
                    5808 Lake Washington Boulevard NE, Suite 300
                    Kirkland, Washington 98033
                    Attention: Benjamin G. Wolff
                    Fax: (425) 828-8061

              with a copy to:

                    Davis Wright Tremaine LLP
                    2600 Century Square
                    1501 Fourth Avenue
                    Seattle, Washington 98101
                    Attention: Julie Weston
                    Fax: (206) 628-7699

      or such other address or facsimile number as such Party hereto may
      hereafter specify for such purpose by notice to the other Parties hereto.

9.3 Force Majeure. Neither Party shall be liable to the other for any failure of
performance hereunder due to Acts of God or other catastrophe, natural or
otherwise; any law, order, regulation, direction, action or request of the
United States government or any other government, including state and local
governments having jurisdiction over the Parties, or any department, agency,
commission, bureau, corporation or other instrumentality of any one or more said
governments, or of any civil or military authority; national emergency;
insurrection; riot; war, strike, acts of terrorism, lock-out; energy shortage;
material shortage; or other cause beyond the Parties' reasonable control;
provided, however, that the non-performing Party is without fault in causing
such default or delay, and such default or delay could not have been prevented
by reasonable precautions and cannot reasonably be circumvented by the non-
performing Party through the use of alternate sources, workaround plans or other
means.

9.4 Entire Agreement. This Agreement, along with the Exhibits hereto, represents
the entire understanding between the Parties with respect to the subject matter
hereof, supersedes all prior negotiations and agreements between the Parties,
and can be amended only by an agreement in writing signed by the Parties.

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9.5 Governing Law. Each Party agrees to continue performing its obligations
under this Agreement while any dispute is being resolved. This Agreement will be
governed by and construed in accordance with applicable federal laws and the
laws of the State of New York, without regard to principles of conflicts of
laws.

9.6 Injunctive Relief. It is understood and agreed that, notwithstanding any
other provisions of this Agreement, breach of the provisions of this Agreement
by a Party shall cause irreparable damage to the other Party for which recovery
of money damages would be inadequate and that the other Party may therefore seek
timely injunctive relief to protect such Party's rights under this Agreement in
addition to any and all remedies at law.

9.7 Cumulative Remedies. All remedies provided for in this Agreement shall be
cumulative and in addition to and not in lieu of any other remedies available to
either Party at law, in equity or otherwise.

9.8 Survival. Sections 4, 5, 6, 7, 8 and 9 of the Agreement of this Exhibit D
will survive the completion, expiration, termination or cancellation of the
Agreement. In addition, any obligations Parties under this Agreement that
expressly of by their nature continue beyond the expiration of this Agreement
shall survive any termination or cancellation of this Agreement.

9.9 Assignment. This Agreement shall accrue to the benefit of and be binding
upon the Parties hereto and any purchaser or any successor entity into which a
Party has been merged or consolidated or to which a Party has sold or
transferred all or substantially all of its assets. Except as permitted in this
Section, neither Party may assign this Agreement or assign or delegate its
rights or obligations under this Agreement without the prior written consent of
the other Party, whose consent shall not be unreasonably withheld; except that a
Party may assign or transfer this Agreement to any Affiliate (including to any
entity that it acquires or is acquired by, whether through merger,
reorganization or otherwise) upon notice to the other Party. In addition,
Clearwire may assign this Agreement (i) to any new entity it creates to carry on
the business of providing Clearwire Wireless Broadband Service or (ii) to a
successor in interest, by merger, operation of law, or by assignment, purchase
or otherwise of the business of providing Clearwire Wireless Broadband Service.

9.10 Succession. This Agreement shall be binding upon and inure to the benefit
of the Parties and their respective permitted successors and assigns.

9.11 Severability. If any provision of this Agreement conflicts with the law
under which this Agreement is to be construed or if any such provision is held
invalid by a court with jurisdiction over the Parties, such provision shall be
deemed to be restated to reflect as nearly as possible the original intentions
of the Parties in accordance with applicable law. The remainder of this
Agreement shall remain in full force and effect. In the event any such deemed
restatement of any such provision prevents the accomplishment of a fundamental
purpose of this Agreement, AOL and Clearwire shall immediately commence
negotiations in good faith to provide the Party which has been adversely
affected by such restatement with value (in cash or in kind) equivalent to the
value that such Party would have received had such provision not been restated.

9.12 Waiver. No failure on the part of either Party to exercise, and no delay in
exercising any right or remedy hereunder, shall operate as a waiver thereof, nor
shall any single or partial exercise of any right or remedy hereunder preclude
any other or further exercise thereof or the exercise of any other right or
remedy granted hereby or by law.

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9.13 No Third Party Beneficiary; Disclaimer of Agency. This Agreement is for the
sole benefit of the Parties hereto, and nothing herein express or implied shall
create or be construed to create any third-party beneficiary rights hereunder.
Neither Party is an agent, representative or partner of the other Party. Except
for provisions herein expressly authorizing a Party to act for another, nothing
herein shall constitute a Party as a legal representative or agent of the other
Party, nor shall a Party have the right or authority to assume, create, incur
any liability or any obligation of any kind, express or implied, against or in
the name or on behalf of any other Party unless otherwise expressly permitted by
such other Party. Except as otherwise expressly provided in this Agreement, no
Party undertakes to perform any obligation of any other Party, whether
regulatory or contractual, or to assume any responsibility for the management of
such other Party's business.

9.14 Captions; Sections. Captions contained herein are inserted only as a matter
of convenience and in no way define, limit, or extend the scope or intent of any
provision hereof. Use of the term "Section" shall include the entire subject
Section and all its subsection where the context requires.

9.15 Press Releases. Except as required by applicable law, none of the Parties
shall make any public announcement regarding the terms of this Agreement or the
relationship established herein without the prior written consent of the other
Parties.

9.16 Taxes. AOL shall be solely responsible for the collection and remittance of
the Bundled Service Taxes, as well as any sales Taxes attributable to AOL's
payments to Clearwire for products and services, and shall indemnify Clearwire
and its Affiliates from and against any and all liabilities in connection
therewith.

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                                    EXHIBIT E

                              RETAIL PRICING TIERS

<Table>
<Caption>
        JACKSONVILLE/DAYTONA                CLEARVALUE                CLEARPREMIUM
        <S>                          <C>                         <C>
        Monthly Fee                  $                   24.99   $                    34.99
        Activation Fee               $                   50.00   $                    50.00
        CPE Lease Fee                $                    4.99   $                     4.99
        Promotional Offer              $19.99/mo for 3 months        $19.99/mo for 3 months
</Table>
<Table>
<Caption>
        STOCKTON/MODESTO                    CLEARVALUE                CLEARPREMIUM
        <S>                          <C>                         <C>
        Monthly Fee                  $                   29.99   $                    36.99
        Activation Fee               $                   25.00   $                    25.00
        CPE Lease Fee                $                    4.99   $                     4.99
        Promotional Offer              $14.99/mo for 3 months        $14.99/mo for 3 months
</Table>

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<PAGE>

                                   EXHIBIT F

                                INITIAL  MARKETS

Jacksonville, Florida
Daytona, Florida
Stockton, California
Modesto, California

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<PAGE>

                                    EXHIBIT G

                                 STAR AGREEMENT
[AMERICA LOGO]

November 1, 2005

Jeff Pearson
Clearwire
5808 Lake Washington Blvd. NE
Suite 300
Kirkland, WA 98033
(W) 425-216-7827
(F) 425-216-7900

      This Letter Agreement confirms the agreement of Clearwire ("Partner") and
America Online, Inc. ("AOL") where AOL is providing AOL Information for use by
Partner solely for the purpose of secure data transmission between the parties
in accordance with the instructions provided by an authorized representative of
AOL.

      "AOL Information" shall mean software and associated hardware, currently
known as the STAR System, a secure electronic information delivery and retrieval
system, any documentation for such STAR System as provided by AOL from time to
time, and any other information provided to Partner under this Agreement.

      Partner agrees not to decompile, disassemble or otherwise reverse engineer
the AOL Information. Partner agrees to use the same degree of care, but no less
than a reasonable degree of care, to prevent the unauthorized use, dissemination
or publication of the AOL Information as it uses to protect its own confidential
information of a like nature. Partner agrees not to contest that AOL and its
suppliers are the sole and exclusive owners of all rights, title and interest,
including all trademarks, copyrights, patents, trade secrets and other
intellectual property rights to all of the documentation and computer-recorded
data comprising or included in the AOL Information.

      The Star System contains encryption functionality which is subject to U.S.
export control laws and regulations and may not be exported or re-exported to
certain countries, for certain prohibited end uses or to persons or entities
named on the U.S. Dept. of Commerce, Bureau of Industry & Security's Denied
Persons List and Entity List, respectively, and on the U.S. Dept. of Treasury,
Office of Foreign Assets Control's Specially Designated Nationals List. Export,
re-export, resale, or transfer of the Star System is prohibited without prior
authorization from AOL and the U.S. Government. In addition, Partner is also
responsible for insuring compliance with

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<PAGE>

any applicable foreign government regulations, including restrictions on imports
and use of encryption.

      Partner will, at AOL's option, return or destroy and so certify to AOL all
tangible material embodying the AOL Information in any form, including without
limitation, all summaries, copies and excerpts of the AOL Information at any
such time as AOL may request.

      Partner acknowledges that disclosure or use of AOL Information could cause
irreparable harm to AOL for which monetary damages may be difficult to ascertain
or be an inadequate remedy. Partner therefore agrees that AOL will have the
right, in addition to its other rights and remedies, to seek and obtain
injunctive relief for any violation of this Agreement.

                                   Sincerely,

                                   ------------------------------------
Agreed and Accepted:

Clearwire

/s/ Jeff Pearson
--------------------------
Name :  Jeff Pearson
Title:  Vice President
Date:   November 18, 2005

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