Document:

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                                                                   Exhibit 10.36

                            EQUIPMENT LEASE AGREEMENT

     THIS EQUIPMENT LEASE AGREEMENT ("Lease Agreement") dated as of
June 30, 2005 is made by and between Clearwire Corporation, a Delaware
corporation, with a principal place of business at 5808 Lake Washington Blvd NE,
Suite 300, Kirkland, WA 98033 ("Lessor"), and 6311458 Canada Ltd., a Canadian
federal corporation, with a principal place of business at 6th Floor, 177
Lombard Avenue, Winnipeg, MB R3B 0W5 ("Lessee").

                                  INTRODUCTION

     WHEREAS, the Lessee has agreed to issue shares to the Lessor representing
fifteen percent (15%) of its total outstanding shares of capital stock (the
"Shares") in partial consideration for the Lessor using commercially reasonable
efforts to arrange for the execution of a roaming agreement as provided in the
Agreement Regarding Roaming between the Lessee and the Lessor, dated as of the
date of this Agreement;

     AND WHEREAS, the Lessor has agreed, in partial consideration for the issue
of the Shares, to enter into this Lease Agreement;

     NOW, THEREFORE, in consideration of the mutual covenants hereinafter set
forth, the Lessor and Lessee agree as follows:

                          TERMS AND CONDITIONS OF LEASE

     1. Lease Agreement.

          (a) Lessor hereby leases to Lessee, and Lessee hereby leases from
Lessor, the Equipment, subject to and upon the terms set forth herein. Each
Equipment Order shall constitute a separate and enforceable lease incorporating
all the terms of this Lease Agreement as if such terms were set forth in full in
such Equipment Order. In the event that any term of any Equipment Order
conflicts with or is inconsistent with any term of this Lease Agreement, the
terms of this Lease Agreement shall govern.

          (b) The Equipment subject to this Lease Agreement shall have a maximum
aggregate value of up to US$5,000,000, subject to adjustment under this Section
1(b). The maximum aggregate value of the Equipment that may be leased by Lessee
under this Lease Agreement shall be reduced, dollar for dollar, by (a) the
amount of all interest that accrues and is unpaid, from time to time, on the
loan made by Fixed Wireless Holdings, LLC to Craig Wireless Nevada Inc. ("CWN")
pursuant to a Loan Agreement dated September 30, 2004, unless such interest is
otherwise paid in cash and/or (b) upon the election of any Purchaser Indemnified
Party (as defined in the Stock Purchase Agreement), the amount payable by CWN
(or its successor) and/or any Related Parties (as defined in the Stock Purchase
Agreement) to such Purchaser Indemnified Party under Article 9 of the Stock
Purchase Agreement unless such amount is otherwise paid in cash. For example, if
accrued interest on such loan equals $100,000, then the maximum aggregate value
of Equipment that may be leased under this Lease Agreement shall be reduced by
such amount, and if CWN is required to pay a Purchaser Indemnified Party
$100,000 under Article 9 of the Stock Purchase Agreement, the Purchaser
Indemnified Party may elect to reduce the maximum aggregate value of Equipment
that may be leased under this Lease Agreement by such amount. The value of the
Equipment shall be determined in good faith by

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Lessor, based on the list prices at which such Equipment is sold to similarly
situated purchasers of such Equipment by NextNet.

          (c) The Equipment leased under this Lease Agreement will be delivered
from time to time as it is needed by Lessee for deployment in Manitoba for the
MCS spectrum licenses held by Lessee. Lessee shall, upon request, provide Lessor
with a rolling forecast, on a month by month basis, of Lessee's anticipated
Equipment requirements. In any event, Lessor shall not be required to deliver
any Equipment under this Lease Agreement without at least 180 days prior written
notice to Lessor, listing specific equipment requirements and specific
quantities (each, an "Equipment Order").

          (d) Lessee shall not use, or permit the use, of the Equipment anywhere
other than in Manitoba, in markets in which Lessee holds MCS spectrum licenses,
provided, however, that if Lessee is sold, or if all or substantially all of
Lessee's assets are sold, the Equipment may be used outside of North America,
provided that such use complies with applicable law (such permitted locations
for use of the Equipment by Lessee, the "Permitted Territory").

     2. Limited Warranty; Disclaimer of Warranties.

          (a) Upon the delivery of the Equipment to Lessee, Lessor shall assign
the limited warranty on the Equipment described on Exhibit A attached hereto
from Supplier to Lessee. Such assignment by Lessor shall be without recourse.
SUCH WARRANTY SHALL NOT RELEASE LESSEE FROM ITS OBLIGATION TO PERFORM ALL
OBLIGATIONS HEREUNDER AND TO KEEP, MAINTAIN AND SURRENDER THE EQUIPMENT IN THE
CONDITION REQUIRED BY SECTIONS 12 AND 13 HEREOF.

          (b) LESSOR MAKES NO (AND SHALL NOT BE DEEMED TO HAVE MADE ANY)
WARRANTIES, EXPRESS OR IMPLIED, AS TO ANY MATTER WHATSOEVER, INCLUDING, WITHOUT
LIMITATION, THE DESIGN, OPERATION OR CONDITION OF, OR THE QUALITY OF THE
MATERIAL, EQUIPMENT OR WORKMANSHIP IN, THE EQUIPMENT, ITS MERCHANTABILITY OR ITS
FITNESS FOR ANY PARTICULAR PURPOSE, THE STATE OF TITLE THERETO OR OF ANY
COMPONENT THEREOF, THE ABSENCE OF LATENT OR OTHER DEFECTS (WHETHER OR NOT
DISCOVERABLE), AND LESSOR HEREBY DISCLAIMS THE SAME; IT BEING UNDERSTOOD THAT
THE EQUIPMENT IS LEASED TO LESSEE "AS IS" AND ALL SUCH RISKS, IF ANY, ARE TO BE
BORNE BY LESSEE. NO DEFECT IN, OR UNFITNESS OF, THE EQUIPMENT, OR ANY OF THE
OTHER FOREGOING MATTERS, SHALL RELIEVE LESSEE OF ANY OBLIGATION HEREUNDER.
LESSEE HAS MADE THE SELECTION OF THE EQUIPMENT FROM THE SUPPLIER BASED ON ITS
OWN JUDGMENT AND EXPRESSLY DISCLAIMS ANY RELIANCE UPON ANY STATEMENTS OR
REPRESENTATIONS MADE BY LESSOR. LESSOR IS NOT RESPONSIBLE FOR ANY REPAIRS,
SERVICE, MAINTENANCE OR DEFECT IN THE EQUIPMENT OR THE OPERATION THEREOF. EXCEPT
FOR THE REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE LESSOR EXPRESSLY SET
FORTH HEREIN, IN NO EVENT SHALL LESSOR BE LIABLE FOR ANY INDIRECT, SPECIAL OR
CONSEQUENTIAL DAMAGES (WHETHER UNDER THE UCC OR OTHERWISE), INCLUDING, WITHOUT
LIMITATION, ANY LOSS, COST OR DAMAGE TO LESSEE OR OTHERS ARISING FROM ANY OF THE
FOREGOING MATTERS, INCLUDING, WITHOUT LIMITATION,

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DEFECTS, NEGLIGENCE, DELAYS, FAILURE OF DELIVERY OR NON-PERFORMANCE OF THE
EQUIPMENT. Lessee's execution and delivery of a Certificate of Acceptance shall
be conclusive evidence as between Lessor and Lessee that the Items of Equipment
described therein are in all of the foregoing respects satisfactory to Lessee,
and Lessee shall not assert any claim of any nature whatsoever against Lessor
based on any of the foregoing matters; provided, however, that nothing contained
herein or in any Certificate of Acceptance delivered hereunder shall in any way
bar, reduce or defeat any claim that Lessee may have against the Supplier or any
other person (other than Lessor).

     3. Lease Agreement Not Cancelable by Lessee. LESSEE'S OBLIGATIONS HEREUNDER
ARE ABSOLUTE, IRREVOCABLE AND UNCONDITIONAL UNDER ANY AND ALL CIRCUMSTANCES
WHATSOEVER (INCLUDING WITHOUT LIMITATION THE BANKRUPTCY OF LESSOR) AND SHALL NOT
BE SUBJECT TO ANY RIGHT OF SET OFF, COUNTERCLAIM, DEDUCTION, DEFENSE OR OTHER
RIGHT WHICH LESSEE MAY HAVE AGAINST THE SUPPLIER, LESSOR OR ANY OTHER PARTY.
LESSEE SHALL HAVE NO RIGHT TO TERMINATE (EXCEPT AS EXPRESSLY PROVIDED HEREIN) OR
CANCEL THIS LEASE OR TO BE RELEASED OR DISCHARGED FROM ITS OBLIGATION HEREUNDER
FOR ANY REASON WHATSOEVER, INCLUDING, WITHOUT LIMITATION, DEFECTS IN,
DESTRUCTION OF, DAMAGE TO OR INTERFERENCE WITH ANY USE OF THE EQUIPMENT (FOR ANY
REASON WHATSOEVER, INCLUDING, WITHOUT LIMITATION, WAR, ACT OF GOD, STRIKE OR
GOVERNMENTAL REGULATION), THE INVALIDITY, ILLEGALITY OR UNENFORCEABILITY (OR ANY
ALLEGATION THEREOF) OF THIS LEASE OR ANY PROVISION HEREOF, OR ANY OTHER
OCCURRENCE WHATSOEVER, WHETHER SIMILAR OR DISSIMILAR TO THE FOREGOING, WHETHER
FORESEEN OR UNFORESEEN.

     4. Definitions. Unless the context otherwise requires, as used in this
Lease Agreement, the following terms shall have the respective meanings
indicated below and shall be equally applicable to both the singular and the
plural forms thereof:

     "Applicable Law" shall mean all applicable Federal, state, local and
foreign laws, ordinances, judgments, decrees, injunctions, writs, rules,
regulations, orders, licenses and permits of any Governmental Authority.

     "Authorized Signer" shall mean any officer of Lessee, set forth on an
incumbency certificate (in form and substance satisfactory to Lessor) delivered
by Lessee to Lessor, who is authorized and empowered to execute the Lease
Documents.

     "Certificate of Acceptance" shall mean a certificate of acceptance, in form
and substance satisfactory to Lessor, executed and delivered by Lessee in
accordance with Section 7 hereof.

     "Default" shall mean any event or condition which, with the passage of time
or the giving of notice, or both, would constitute an Event of Default.

     "Default Rate" shall mean an annual interest rate equal to the lesser of
12% or the maximum interest rate permitted by Applicable Law.

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     "Equipment" shall mean, subject to Section 1(b), up to US$5,000,000 of
NextNet Expedience Base Stations, with the specific number of base stations to
be leased under this Equipment Lease determined based on NextNet's list prices
for the base stations in effect at the time of the Equipment Order, together
with all replacement parts, additions and accessories incorporated therein or
affixed thereto including, without limitation, any software that is a component
or integral part of, or is included or used in connection with, any Item of
Equipment, but with respect to such software, only to the extent of Lessor's
interest therein, if any.

     "Equipment Location" shall mean, with respect to the Equipment, the initial
location specified in the Equipment Order or, subject to the restrictions in
Section 1(d), such other location in the Permitted Territory as Lessee shall
from time to time specify in writing to Lessor as required under Section 10
hereof.

     "Event of Default" shall have the meaning specified in Section 20 hereof.

     "Governmental Action" shall mean all authorizations, consents, approvals,
waivers, filings and declarations of any Governmental Authority, including,
without limitation, those environmental and operating permits required for the
ownership, lease, use and operation of the Equipment.

     "Governmental Authority" shall mean any foreign, federal, state, county,
municipal or other governmental authority, agency, board or court.

     "Item of Equipment" shall mean each item of the Equipment.

     "Lease Agreement," "hereof," "herein" and "hereunder" shall mean, with
respect to any Equipment this Lease Agreement and the Equipment Order on which
such Equipment is described, including all addenda attached thereto and made a
part thereof.

     "Lease Documents" shall mean this Lease Agreement, each Equipment Order and
all other documents prepared by Lessor and now or hereafter executed in
connection therewith.

     "Lessor Assignee" shall have the meaning specified in Section 15 hereof.

     "Lessor Liens" means any Lien or disposition of title or interest arising
as a result of (i) claims against Lessor not related to the transactions
contemplated by this Lease Agreement, (ii) any act or omission of the Lessor
which is not related to the transactions contemplated by this Lease Agreement or
is in violation of any of the terms of this Lease Agreement, (iii) claims
against the Lessor with respect to taxes or expenses against which Lessee is not
required to indemnify the Lessor or (iv) claims against Lessor arising out of
any transfer by Lessor of all or any portion of the its interest in the
Equipment or this Lease Agreement other than pursuant to the exercise of the
remedies set forth in Section 22 of this Lease Agreement.

     "Lessor Transfer" shall have the meaning specified in Section 15 hereof.

     "Liability" shall have the meaning specified in Section 22 hereof.

     "Lien" shall mean all mortgages, pledges, security interests, liens,
encumbrances, claims or other charges of any kind whatsoever.

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     "Loss" shall have the meaning specified in Section 16 hereof.

     "NextNet" means NextNet Wireless, Inc.

     "Permitted Lien" means (i) the rights of Lessor as owner of the Equipment
and Lessee as herein provided, (ii) Lessor Liens, (iii) Liens for taxes of
Lessee (either not yet due or being contested in good faith by appropriate
proceedings so long as such proceedings do not involve any material risk of the
sale, forfeiture or loss of the Equipment or any interest therein), (iv)
materialmen's, mechanics', workmen's, repairmen's, employees' or other like
Liens arising in the ordinary course of Lessee's business (including those
arising under maintenance agreements entered into in the ordinary course of
business) securing obligations that are not overdue for a period of more than
thirty (30) days or are being contested in good faith by appropriate proceedings
so long as such proceedings do not involve any material risk of the sale,
forfeiture or loss of the Equipment or any interest therein, (v) Liens arising
out of any judgment or award against Lessee unless the judgment secured shall
not, within thirty (30) days after the entry thereof, have been discharged,
vacated, reversed or execution thereof stayed pending appeal or shall not have
been discharged, vacated or reversed within thirty (30) days after the
expiration of such stay, so long as during either such 30-day period there is
not any material risk of the sale, forfeiture or loss of the Equipment or any
interest therein, (vi) any other Lien with respect to which Lessee shall have
provided a bond, cash collateral or other security adequate in the reasonable
opinion of Lessor, and (vii) Liens approved in writing by Lessor.

     "Permitted Territory" shall have the meaning specified in Section 1(d)
hereof.

     "Purchase Price" shall have the meaning specified in Section 8 hereof.

     "Required Alteration" shall have the meaning specified in Section 11
hereof.

     "Stock Purchase Agreement" shall mean that certain Stock Purchase
Agreement, dated September 30, 2004, by and among Craig Wireless Honolulu Inc.,
a Hawaii corporation, Craig Wireless Nevada Inc., a Nevada corporation, Craig
Wireless Systems Inc., a Canadian federal corporation, and Fixed Wireless
Holdings, LLC, a Delaware limited liability company.

     "Supplier" shall mean NextNet or its successor.

     "Term" shall have the meaning specified in Section 8 and shall include any
extensions or renewals of the initial term.

     "Upgrade" shall have the meaning specified in Section 14 hereof.

     5. Supplier Not an Agent. LESSEE UNDERSTANDS AND AGREES THAT (i) NEITHER
THE SUPPLIER, NOR ANY SALES REPRESENTATIVE OR OTHER AGENT OF THE SUPPLIER, IS
(1) AN AGENT OF LESSOR OR (2) AUTHORIZED TO MAKE OR WAIVE OR ALTER ANY TERM OR
CONDITION OF THIS LEASE, AND (ii) NO SUCH WAIVER OR ALTERATION SHALL VARY THE
TERMS OF THIS LEASE UNLESS EXPRESSLY SET FORTH HEREIN.

     6. Ordering Equipment; Export Restrictions.

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          (a) Lessee may, from time to time during the Term of this Lease
Agreement, order the Equipment, in whole and in part, from Lessor by executing
and delivering an Equipment Order. Lessee may send Equipment Orders by facsimile
or electronically in accordance with procedures to be established by Lessor from
time to time. Upon receipt of a Equipment Order, Lessor shall promptly place an
order with the Supplier for the appropriate Equipment. In the event of a
conflict or inconsistency between the terms and conditions of an Equipment Order
and this Lease Agreement, the terms and conditions of this Agreement shall
control to the extent of the conflict or inconsistency. Lessee shall normally
issue Equipment Orders 180 days in advance of expected delivery of Equipment.

          (b) Lessor shall keep Lessee reasonably informed about the likely
shipping dates, and the actual shipping dates, for the Equipment ordered
pursuant to this Agreement, based on information obtained by Lessor from its
suppliers. Lessor shall use commercially reasonable efforts to comply with
Lessee's requested delivery dates. Lessor and Lessee shall agree on shipping
terms with respect to each particular Equipment Order, but Lessee shall be
responsible for all shipping costs. In the absence of specific shipping
instructions from Lessee that are approved by Lessor, Lessor may ship by the
method it deems most advantageous.

          (c) Lessee shall inspect the Equipment upon delivery and shall advise
Lessor in writing of any obvious physical defects, discrepancies, and/or
shortages observed between the Equipment physically inspected and the
corresponding Equipment shipment packing list provided by Lessor.

          (d) Lessor shall ship all Equipment provided pursuant to this
Agreement, freight prepaid, FOB Minneapolis, Minnesota, or such other location
in the continental United States as the Lessor and the Lessee may agree, at
Lessee's expense. Lessee shall be responsible for all actions, costs and
expenses required in connection with the delivery of Equipment to a Canadian
site, including customs clearance processes, and including all customs, duty,
excise and value-added taxes (including goods and services taxes). The method of
shipment shall be consistent with the nature of the Equipment and hazards of
transportation. Except as set forth below, Lessor shall bear all risks of loss,
damage, or destruction of each Equipment, in whole or in part, ordered hereunder
which occurs prior to delivery to the location identified by Lessor as provided
above, and such loss, damage, or destruction shall not release Lessor from any
obligation hereunder. After Equipment delivery, the risk of loss or damage
occurring thereafter shall be borne by Lessee.

          (e) Lessee may change or cancel Equipment Orders, subject to the terms
of this Section 6(e). If Lessee issues an Equipment Order causing a delivery
delay or cancels a Equipment Order less than 30 days prior to the scheduled
delivery date, Lessor may impose, and Lessee shall pay, a restocking charge.
Such charges would be equal to Lessor's reasonable, actual costs of restocking.

          (f) In order to facilitate production planning by Lessor under this
Lease Agreement, Lessee agrees to provide, upon request, a nonbinding, rolling
12-month forecast of Equipment requirements within 15 days of the date of this
Lease Agreement. Lessee will use commercially reasonable efforts to update this
nonbinding forecast on or about the 15th day of each subsequent month.

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          (g) Lessor's export of the equipment may be subject to compliance with
the Export Administration Act Regulations of the Department of Commerce of the
United States, as amended, and other export control law, regulations and
executive orders of the United States (the "Export Controls"). Lessee shall
comply with the Export Controls. Lessee shall not, directly or indirectly,
export or reexport any of the Equipment, or any materials or technology relating
to the Equipment, to any country, destination or person to which export or
reexport of any of the Equipment is prohibited by the Export Controls without
first obtaining the permission of the United States Office of Export
Administration or its successor. Lessee shall be solely responsible for
complying with the Export Controls and will indemnify and hold Lessor harmless
from any liability or expense that may result as a failure of Lessee to comply
with the Export Controls. Lessee shall execute and deliver any certification
document that Lessor may request in association with Lessee's compliance with
the Export Controls.

     7. Delivery and Acceptance. Upon Lessee's acceptance for lease of any
Equipment delivered to Lessee and described in any Equipment Order, Lessee shall
execute and deliver to Lessor a Certificate of Acceptance. Such Certificate of
Acceptance shall constitute Lessee's acknowledgment that such Equipment (a) was
received by Lessee, (b) is satisfactory to Lessee in all respects and is
acceptable to Lessee for lease hereunder, (c) is suitable for Lessee's purposes,
(d) is in good order, repair and condition, (e) has been installed and operates
properly, and (f) is subject to all of the terms of this Lease Agreement
(including, without limitation, Section 2 hereof). The Supplier shall not be
entitled to rely upon the Certificate of Acceptance in any manner whatsoever.

     8. Term; Purchase Option. The term of this Lease Agreement (the "Term")
shall commence on the date of this Lease Agreement, and, unless earlier
terminated as provided herein, shall continue for a period of five years
thereafter. Lessor shall have the right to renew this Lease Agreement for up to
five additional one-year terms after expiration of the initial Term. Upon
expiration of the Term, including any renewal Term, Lessee shall have the right
to purchase the Equipment for a purchase price of $1.00 (the "Purchase Price").
Lessee shall be deemed to have exercised its option to purchase the Equipment
upon the expiration of the Term and shall upon receipt of a written demand from
the Lessor, pay the Purchase Price within 30 days of receipt of such demand. If
Lessee fails to pay the Purchase Price as provided in this paragraph, Lessee
shall return the Equipment to Lessor after the expiry of the 30 day notice
period upon the request of the Lessor.

     9. Rent. Except as provided otherwise herein, Lessee shall not be required
to pay any rent for the leased Equipment during the term of the lease of such
Equipment. The consideration for the Lease Agreement by Lessor is the issuance
of the Shares.

     10. Location; Inspection; Labels. Upon request, the Lessee shall advise the
Lessor of the location of the Equipment within the Permitted Territory from time
to time. Except in connection with maintenance and repair, the Equipment shall
not removed from the Permitted Territory. Upon reasonable notice and at its own
risk and expense, Lessor shall have the right to enter upon the Equipment
Location and inspect the Equipment at any reasonable time; provided that such
inspection shall not interfere with Lessee's operation or quiet enjoyment of the
Equipment. At Lessor's request, Lessee shall affix permanent labels stating that
the Equipment is owned by Lessor in a prominent place on the Equipment and shall
keep such labels in good repair and condition.

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     11. Use; Alterations. Lessee shall use the Equipment lawfully and only in
the manner for which it was designed and intended. Lessee shall comply with all
Applicable Law. Lessee shall immediately notify Lessor in writing of any
existing or threatened investigation, claim or action by any Governmental
Authority in connection with any Applicable Law or Governmental Action that
could adversely affect the Equipment or this Lease Agreement. Lessee, at its own
expense, shall make such alterations, additions or modifications or improvements
(each, a "Required Alteration") to the Equipment as may be required from time to
time to meet the requirements of Applicable Law or Governmental Action. All such
Required Alterations shall immediately, and without further act, be deemed to
constitute Items of Equipment and be fully subject to this Lease Agreement as if
originally leased hereunder. Lessee, at its own expense, may from time to time
add further parts or accessories and make such alterations and modifications in
and additions to the Equipment as Lessee may deem desirable in the proper
conduct of its business, including, without limitation, removal of parts which
Lessee has determined in its reasonable judgment to be obsolete or no longer
suitable or appropriate for use on the Equipment (such parts, "Obsolete Parts");
provided that no such alteration, modification, removal or addition impairs the
condition of the Equipment or diminishes the value, utility or remaining useful
life of the Equipment below the value, utility or remaining useful life thereof
immediately prior to such alteration, modification or addition, assuming the
Equipment was then in the condition required to be maintained by the terms of
this Lease Agreement.

     12. Repairs and Maintenance. Lessee, at Lessee's own cost and expense,
shall keep the Equipment in good repair, good operating condition and working
order, in a manner that will not cause the loss of any Supplier's or other
manufacturers' warranties, and in accordance with Supplier's recommendations and
Lessee's standard practices (but with respect to the latter, in no event less
than industry practices). Lessee, at its own cost and expense and within a
reasonable period of time, shall replace any part of any Item of Equipment that
becomes unfit or unavailable for use from any cause, with a replacement part of
not less than the value, remaining useful life and utility as the replaced part
immediately preceding the replacement (assuming that such replaced part was in
the condition required by this Lease Agreement). Such replacement part shall
immediately, and without further act, be deemed to constitute an Item of
Equipment and be fully subject to this Lease Agreement as if originally leased
hereunder, and shall be free and clear of all Liens.

     13. Return of Equipment. Upon the expiration or earlier termination of this
Lease Agreement, Lessee, at its sole expense, shall assemble and return the
Equipment to Lessor by delivering such Equipment to a location in the Permitted
Territory specified by Lessor. Lessee agrees that the Equipment, when returned,
shall be in the condition required by Section 12 hereof. All components of the
Equipment shall have been properly serviced. If any Item of Equipment fails to
meet the standards set forth above, Lessee agrees to pay on demand all costs and
expenses incurred in connection with repairing such Item of Equipment and
restoring it so as to meet such standards.

     14. Equipment Upgrades/Attachments. In addition to the requirements of
Section 11 hereof, Lessee, at its own expense, may from time to time add or
install upgrades or attachments (each an "Upgrade") to the Equipment during the
Term; provided, that such Upgrades do not materially adversely affect productive
capacity, utility to any potential operator in any country or remaining useful
life of the Equipment. Any such Upgrades which can be removed without causing
unrepaired damage to or adversely affecting the condition of the Equipment, or
reducing

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the utility or remaining useful life of the Equipment shall remain the property
of Lessee; and upon the expiration or earlier termination of this Lease
Agreement and provided that no Event of Default exists, Lessee may, at its
option, remove any such Upgrades and, upon such removal, shall restore the
Equipment to the condition required hereunder.

     15. Sublease and Assignment.

          (a) EXCEPT AS SET FORTH BELOW, WITHOUT LESSOR'S PRIOR WRITTEN CONSENT,
LESSEE SHALL NOT (i) ASSIGN, TRANSFER, PLEDGE, HYPOTHECATE OR OTHERWISE DISPOSE
OF THIS LEASE, THE EQUIPMENT OR ANY INTEREST THEREIN, OR (ii) SUBLET OR LEND THE
EQUIPMENT TO, OR PERMIT THE EQUIPMENT TO BE USED BY, ANYONE OTHER THAN LESSEE.
NOTWITHSTANDING THE FOREGOING, LESSEE MAY PLEDGE OR HYPOTHECATE THIS LEASE TO
SECURE OBLIGATIONS ARISING OUT OF LOANS MADE TO LESSEE BY BONA FIDE THIRD PARTY
LENDERS; PROVIDED, THAT THE PROCEEDS OF ANY SUCH LOANS ARE USED EXCLUSIVELY BY
LESSEE IN CONNECTION WITH ITS BUSINESS OPERATIONS. ANY ASSIGNEE, TRANSFEREE,
PLEDGEE OR PERSON TO WHOM LESSEE HYPOTHECATES, LENDS, SUBLETS THE EQUIPMENT MUST
AGREE TO BE BOUND BY THIS LEASE.

          (b) Lessor, at any time subsequent to the delivery of the Equipment to
the Lessee, with or without notice to Lessee, may sell, transfer, assign and/or
grant a security interest, in all or any part of Lessor's interest in this Lease
Agreement, any Equipment Order or any Item of Equipment (each, a "Lessor
Transfer"), provided that no such Lessor Transfer will materially increase
Lessee's burdens or risks hereunder. Prior to the delivery of the Equipment to
the Lessee, Lessor shall be permitted to make a Lessor Transfer only to its
affiliates or affiliates of NextNet. In the event of a Lessor Transfer, any
purchaser, transferee, assignee or secured party (each a "Lessor Assignee")
shall have and may exercise all of Lessor's rights hereunder with respect to the
items to which any such Lessor Transfer relates. Lessor acknowledges that no
such sale, transfer, assignment and/or security interest will materially change
Lessee's duties hereunder or materially increase its burdens or risks hereunder.
Lessee agrees that upon written notice to Lessee of any such sale, transfer,
assignment and/or security interest, Lessee shall acknowledge receipt thereof in
writing and shall comply with the directions and demands of any such Lessor
Assignee.

     16. Risk of Loss; Damage to Equipment. Lessee shall bear the risk of loss
(including without limitation, theft, destruction, failure of Lessee to repair
or maintain in accordance with Section 12 hereof, disappearance of or damage to
any and all Items of Equipment ("Loss") from any cause whatsoever), whether or
not insured against, during the Term hereof. Notwithstanding the foregoing, in
the event of a Loss, each of Lessor and Lessee shall be relieved of its
obligations under this Lease Agreement with respect to the Items of Equipment
which are the subject of the Loss.

     17. General Tax Indemnification. Lessee shall pay when due and shall
indemnify and hold Lessor harmless from and against (on an after-tax basis) any
and all taxes, fees, withholdings, levies, imposts, duties, assessments and
charges of any kind and nature arising out of or related to this Lease
Agreement, together with interest and penalties thereon and including, without
limitation, sales, use, gross receipts, personal property, real property, real
estate excise,

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ad valorem, business and occupational, franchise, value added, leasing, leasing
use, documentary, stamp or other taxes (collectively, a "Tax") imposed upon or
against Lessor, any Lessor Assignee (but not a greater amount than if no
assignment by Lessor had occurred), Lessee or any Item of Equipment by any
Governmental Authority with respect to any Item of Equipment or the
manufacturing, ordering, sale, purchase, shipment, delivery, acceptance or
rejection, ownership, titling, registration, leasing, subleasing, possession,
use, operation, removal, return or other dispossession thereof or upon the
rents, receipts or earnings arising therefrom or upon or with respect to this
Lease Agreement, excepting only all foreign, Federal, state and local taxes on
or measured by Lessor's net income (other than income tax prior to the
termination of this Lease Agreement resulting from making any alterations,
improvements, modifications, additions, upgrades, attachments, replacements or
substitutions by Lessee). Whenever this Lease Agreement terminates as to any
Item of Equipment, Lessee shall, upon written request by Lessor, advance to
Lessor the estimated amount of the personal property or other taxes on said item
which are not yet payable, but for which Lessee is responsible.

     18. Delinquent Payments. If Lessee fails to pay any sums under this Lease
Agreement on or before the date when the same becomes due, Lessee shall pay to
Lessor interest on such amount at the Default Rate. Such interest shall be
payable by Lessee upon demand by Lessor and shall be deemed rent hereunder. In
no event shall such late charge exceed the maximum amount permitted under
Applicable Law.

     19. Personal Property; Liens. Lessor and Lessee hereby agree that the
Equipment is, and shall at all times remain, personal property notwithstanding
the fact that any Item of Equipment may now be, or hereafter become, in any
manner affixed or attached to real property or any improvements thereon. Lessee
shall at all times keep the Equipment free and clear from all Liens other than
Permitted Liens. Lessee shall (i) give Lessor immediate written notice of any
such Lien, (ii) promptly, at Lessee's sole cost and expense, take such action as
may be necessary to discharge any such Lien, and (iii) indemnify and hold
Lessor, on an after-tax basis, harmless from and against any loss or damage
caused by any such Lien.

     20. Events of Default; Remedies.

          (a) As used herein, the term "Event of Default" shall mean any of the
following events: (1) Lessee violates or fails to perform any provision of this
Lease Agreement and such violation or failure is not cured within thirty (30)
days after written notice by Lessor; or (2) Lessee violates or fails to perform
any covenant or representation made by Lessee herein and such violation or
failure is not cured within thirty (30) days after written notice by Lessor. An
Event of Default with respect to any Equipment Order hereunder shall, at
Lessor's option, constitute an Event of Default for all Equipment Orders
hereunder and any other agreements between Lessor and Lessee.

          (b) Upon the occurrence of an Event of Default, Lessor may do one or
more of the following as Lessor in its sole discretion shall elect: (1) proceed
by appropriate court action or actions, either at law or in equity, to enforce
performance by Lessee of the applicable covenants of this Lease Agreement or to
recover damages for the breach thereof; (2) sell any Item of Equipment at public
or private sale; (3) hold, keep idle or lease to others any Item of Equipment as
Lessor in its sole discretion may determine; (4) by notice in writing to Lessee,
cancel or terminate this Lease Agreement, without prejudice to any other
remedies hereunder;

                                       10

<PAGE>

(5) demand that Lessee, and Lessee shall, upon written demand of Lessor and at
Lessee's expense forthwith return all Items of Equipment to Lessor in the manner
and condition required by Section 13 hereof; (6) enter upon the premises of
Lessee or other premises where any Item of Equipment may be located and, without
notice to Lessee and with or without legal process, take possession of and
remove all or any such Items of Equipment without liability to Lessor by reason
of such entry or taking possession, and without such action constituting a
cancellation or termination of this Lease Agreement unless Lessor notifies
Lessee in writing to such effect; (7) cause Lessee, at its expense, to promptly
assemble any and all Items of Equipment and return the same to Lessor at such
place as Lessor may designate in writing; and (8) exercise any other right or
remedy available to Lessor under applicable law or proceed by appropriate court
action to enforce the terms hereof or to recover damages for the breach hereof
or to rescind this Lease Agreement. In addition, Lessee shall be liable, except
as otherwise provided above, for reasonable legal fees and other costs and
expenses incurred by reason of the occurrence of any Event of Default or the
exercise of Lessor's remedies with respect thereto. If an Event of Default
occurs, Lessee hereby agrees that ten (10) days prior notice to Lessee of (A)
any public sale or (B) the time after which a private sale may be negotiated
shall be conclusively deemed reasonable and, to the extent permitted by
Applicable Law, Lessee waives all rights and defenses with respect to such
disposition of the Equipment. None of Lessor's rights or remedies hereunder are
intended to be exclusive of, but each shall be cumulative and in addition to any
other right or remedy referred to hereunder or otherwise available to Lessor at
law or in equity, and no express or implied waiver by Lessor of any Event of
Default shall constitute a waiver of any other Event of Default or a waiver of
any of Lessor's rights.

     21. 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):

          If to Lessee:

          -
          6th Floor, 177 Lombard Avenue
          Winnipeg, Manitoba
          R3B 0W5
          Attention: Boyd Craig
          Facsimile: 204-957-7408

                                       11

<PAGE>

          With a copy to:

          Aikins, MacAulay & Thorvaldson LLP
          30th Floor, 360 Main Street
          Winnipeg, Manitoba R3C 4G1
          Attention: Michael Guttormson
          Facsimile: 204-957-0840

          If to Lessor:

          Clearwire Corporation
          5808 Lake Washington Blvd NE, Suite 300
          Kirkland, WA 98033
          Attention: Benjamin G. Wolff
          Facsimile: (425) 828.8061

          With a copy to:

          Davis Wright Tremaine LLP
          1501 Fourth Avenue
          2600 Century Square
          Seattle, WA 98101
          Attention: Julie A. Weston, Esq.
          Facsimile: (206) 628-7699

     22. General Indemnification.

          (a) Subject to Section 22(b), Lessee shall pay, and shall indemnify
and hold Lessor harmless on an after-tax basis from and against, any and all
liabilities, causes of action, claims, suits, penalties, damages, losses, costs
or expenses (including attorneys' fees), obligations, liabilities, demands and
judgments, and Liens, of any nature whatsoever (collectively, a "Liability")
arising out of: (i) the Lease Documents, (ii) the ownership, selection,
acceptance, rejection, possession, lease, sublease, operation, use, maintenance,
documenting, inspection, control, loss, damage, destruction, removal, storage,
surrender, sale, use, condition, delivery, nondelivery, return or other
disposition of or any other matter relating to any Item of Equipment or any part
or portion thereof and any and all Liabilities in any way relating to or arising
out of injury to persons, properties or the environment or any and all
Liabilities based on strict liability in tort, negligence, breach of warranties
or violations of any regulatory law or requirement, (iii) a failure to comply
fully with Applicable Law and (iv) Lessee's failure to perform any covenant, or
Lessee's breach of any representation or warranty, hereunder; provided, that the
foregoing indemnity shall not extend to the Liabilities to the extent related to
any Tax, the gross negligence or willful misconduct of Lessor or its affiliates
or any assignment of this Lease Agreement by Lessor or the breach by Lessor of
any covenant or agreement in this Lease Agreement. Lessee shall promptly deliver
to Lessor (y) copies of any documents received from any agency of the federal
government of the United States or any state, county or municipal environmental
or health agency and (z) copies of any documents submitted by Lessee or any of
its subsidiaries to any agency of the federal government of the United States or
to any state, county or municipal environmental or health agency concerning the
Equipment or its operation.

                                       12

<PAGE>

          (b) If a claim is made against Lessor involving one or more
Liabilities and Lessor has notice thereof, Lessor shall promptly after receiving
such notice give notice of such claim to Lessee; provided, that the failure to
provide such notice shall not release Lessee from any of its obligations to
indemnify hereunder, except to the extent Lessee is prejudiced as a result of
such failure to give such notice in a timely fashion, or such failure results in
an increase in the Liabilities payable hereunder, but only to the extent Lessee
is so prejudiced or to the extent of such increase, as applicable, and no
payment by Lessee to Lessor pursuant to this Section 22(b) shall be deemed to
constitute a waiver or release of any right or remedy which Lessee may have
against Lessor for any actual damages as a result of the failure by Lessor to
give Lessee such notice. Lessee shall be entitled, at its sole cost and expense
(and acting through counsel reasonably acceptable to Lessor),

                    (A) in any judicial or administrative proceeding that
               involves solely a claim for one or more Liabilities, to assume
               responsibility for and control thereof;

                    (B) in any judicial or administrative proceeding involving a
               claim for one or more Liabilities and other claims related or
               unrelated to the transactions contemplated by this Lease
               Agreement, to assume responsibility for and control of such claim
               for Liabilities to the extent that the same may be and is severed
               from such other claims (and Lessor shall use reasonable efforts
               to obtain such severance), and

                    (C) in any other case, to be consulted by Lessor with
               respect to judicial proceedings subject to the control of Lessor
               and to be allowed, at Lessee's sole expense, to participate
               therein.

          (c) Lessor shall supply Lessee with such information reasonably
requested by Lessee as is necessary or advisable for Lessee to control or
participate in any proceeding to the extent permitted by this Section 22. Except
during the continuance of an Event of Default, Lessor shall not (unless Lessor
waives its right to be indemnified with respect to such Liability under this
Section 22) enter into a settlement or other compromise with respect to any
Liability without the prior written consent of Lessee, which consent shall not
be unreasonably withheld or delayed. Upon payment of any Liability pursuant to
this Section 22, and provided no Event of Default is then continuing, Lessee,
without any further action, shall be subrogated to any claims Lessor may have
relating thereto. Lessor, at Lessee's expense, agrees to give such further
assurances or agreements and to cooperate with Lessee to permit Lessee to pursue
such claims, if any, to the extent reasonably requested by Lessee. In the event
that Lessee shall have paid an amount to Lessor pursuant to this Section 22, and
Lessor subsequently shall be reimbursed in respect of such indemnified amount
together with such other amounts, if any, relating to costs (including legal
fees) incurred by Lessee related thereto from any other person (other than an
insurance policy maintained by Lessor or its affiliates), Lessor shall, so long
as no Event of Default has occurred and is continuing, promptly pay Lessee, but
not before Lessee shall have made all payments then due to Lessor pursuant to
this Section 22 and all other payments then due under this Lease Agreement, an
amount equal to the sum of (I) the amount of such reimbursement, including
interest received attributable thereto, net of Taxes required to be paid by
Lessor as a result of any refund received and (II) any Tax savings realized by
Lessor as a result of any payment by Lessor made pursuant to this sentence;
provided, that Lessor shall not

                                       13

<PAGE>

be obligated to pay any such amount to the extent that such amount would exceed
(i) the aggregate amount of all prior payments by Lessee to Lessor under this
Section 22 in respect of such reimbursement (including any amount necessary for
such payments to be on an after-tax basis) plus interest received and such other
amounts, if any, relating to costs (including legal fees) incurred by Lessee
related thereto and for which Lessor shall have been reimbursed less (ii) the
aggregate amount of all prior payments by Lessor to Lessee pursuant to this
Section 22 in respect of such reimbursement.

     23. Severability; Captions. Any provision of this Lease Agreement or any
Equipment Order that is prohibited or unenforceable in any jurisdiction shall,
as to such jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof, and any
such prohibition or unenforceability shall not invalidate or render
unenforceable such provision in any other jurisdiction. Captions are intended
for convenience or reference only, and shall not be construed to define, limit
or describe the scope or intent of any provisions hereof.

     24. Lessor's Expense. Lessee shall pay all costs and expenses of Lessor,
including, without limitation, reasonable attorneys' and other professional fees
and the fees of any collection agencies, incurred by Lessor following an Event
of Default in enforcing any of the terms, conditions or provisions hereof.

     25. Representations and Warranties of Lessee. Lessee represents and
warrants that: (a) its is duly organized, validly existing and in good standing
under the laws of the jurisdiction of its incorporation, (b) the Lease
Documents, when entered into, will constitute legal, valid and binding
obligations of Lessee enforceable against Lessee in accordance with the terms
thereof, except as the same may be limited by applicable bankruptcy, insolvency,
fraudulent conveyance, reorganization, moratorium or similar laws affecting the
rights of creditors or lessors generally and by general principles of equity,
whether considered in a proceeding at law or in equity, and except, in the case
of the Lease Agreement, as limited by applicable laws which may affect the
remedies provided in the Lease Agreement; (c) there are no actions or
proceedings to which Lessee is a party, and there are no other threatened
actions or proceedings of which Lessee has knowledge, before any Governmental
Authority, which, either individually or in the aggregate, would adversely
affect the financial condition of Lessee, or the ability of Lessee to perform
its obligations hereunder; (d) Lessee is not in default under any obligation for
the payment of borrowed money, for the deferred purchase price of property or
for the payment of any rent under any lease agreement which, either individually
or in the aggregate, would have the same such effect; (e) Lessee does not
conduct business under a trade, assumed or fictitious name; and (f) except as
previously disclosed in writing to Lessor, neither Lessee nor any of its
officers or directors has, directly or indirectly, any financial interest in the
Supplier.

     26. Lessee's Waivers. TO THE EXTENT PERMITTED BY APPLICABLE LAW, LESSEE (a)
WAIVES ANY AND ALL RIGHTS AND REMEDIES CONFERRED UPON A LESSEE BY SECTIONS
2A-508 THROUGH 2A-522 OF THE UNIFORM COMMERCIAL CODE AND (b) ANY RIGHTS NOW OR
HEREAFTER CONFERRED BY STATUTE OR OTHERWISE TO SETOFF OR DEDUCT ALL OR ANY PART
OF ANY CLAIMED DAMAGES RESULTING FROM LESSOR'S DEFAULT, IF ANY, UNDER THIS
LEASE.

                                       14

<PAGE>

     27. Security Filings. LESSEE HEREBY APPOINTS LESSOR OR ITS ASSIGNEE AS ITS
TRUE AND LAWFUL ATTORNEY IN FACT, IRREVOCABLY AND COUPLED WITH AN INTEREST, TO
EXECUTE AND FILE ON BEHALF OF LESSEE ALL UCC FINANCING STATEMENTS AND ANY
FILINGS UNDER THE CANADIAN PERSONAL PROPERTY SECURITY ACT OF A SIMILAR NATURE
WHICH IN LESSOR'S SOLE DISCRETION ARE DEEMED NECESSARY OR PROPER TO SECURE
LESSOR'S INTEREST IN THE EQUIPMENT IN ALL APPLICABLE JURISDICTIONS. Lessee
hereby ratifies, to the extent permitted by law, all that Lessor shall lawfully
and in good faith do or cause to be done by reason of and in compliance with
this paragraph.

     28. Miscellaneous. Time is of the essence with respect to this Lease
Agreement. ANY FAILURE OF LESSOR TO REQUIRE STRICT PERFORMANCE BY LESSEE OR ANY
WAIVER BY LESSOR OF ANY PROVISION HEREIN SHALL NOT BE CONSTRUED AS A CONSENT OR
WAIVER OF ANY PROVISION OF THIS LEASE. This Lease Agreement and each Equipment
Order shall be binding upon, and inure to the benefit of, the parties hereto,
their permitted successors and assigns. The Lease Documents shall be executed on
Lessee's behalf by an Authorized Signer of Lessee. THIS LEASE IS BEING DELIVERED
IN THE STATE OF WASHINGTON AND SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE
WITH, THE LAWS OF THE STATE OF WASHINGTON, INCLUDING ALL MATTERS OF
CONSTRUCTION, VALIDITY AND PERFORMANCE WITHOUT GIVING EFFECT TO ANY CHOICE OF
LAW OR CONFLICT OF LAWS PROVISION OR RULE (WHETHER OF THE STATE OF WASHINGTON OR
ANY OTHER JURISDICTION) THAT WOULD CAUSE THE APPLICATION OF THE LAWS OF ANY
JURISDICTION OTHER THAN THE STATE OF WASHINGTON. Lessor and Lessee hereby each
submit to the exclusive jurisdiction of the State and Federal courts located in
King County, Washington, United States of America, except to the extent that
temporary injunctive or comparable relief is sought in Canada under Canadian
law.

     29. Jury Trial Waiver. LESSOR AND LESSEE HEREBY EACH WAIVE THEIR RESPECTIVE
RIGHTS TO TRIAL BY JURY OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING
OUT OF OR RELATED TO THE LEASE, THE LEASE DOCUMENTS OR THE TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY, IN ANY ACTION OR PROCEEDING TO WHICH LESSOR OR
LESSEE MAY BE PARTIES, WHETHER WITH RESPECT TO CONTRACT CLAIMS, TORT CLAIMS, OR
OTHERWISE. LESSEE AND LESSOR AGREE THAT THEIR RESPECTIVE RIGHT TO JURY TRIAL IS
WAIVED AS TO ANY ACTION, COUNTERCLAIM OR OTHER PROCEEDING WHICH SEEKS, IN WHOLE
OR IN PART, TO CHALLENGE THE VALIDITY OR ENFORCEABILITY, OF THIS AGREEMENT OR
THE OTHER LEASE DOCUMENTS OR ANY PROVISION HEREOF OR THEREOF. THIS WAIVER IS
MADE KNOWINGLY, WILLINGLY AND VOLUNTARILY BY LESSOR AND LESSEE WHO EACH
ACKNOWLEDGE THAT NO REPRESENTATIONS HAVE BEEN MADE BY ANY INDIVIDUAL TO INDUCE
THIS WAIVER OF TRIAL BY JURY OR IN ANY WAY TO MODIFY OR NULLIFY ITS EFFECT. THIS
WAIVER SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, RENEWALS, SUPPLEMENTS OR
MODIFICATIONS TO THE LEASE AND THE LEASE DOCUMENTS.

     30. Survival. Lessee's obligations under Section 1(d), 22, 28 and 29 shall
survive the expiration of the Term until such obligations are terminated in
writing by Lessor.

                                       15

<PAGE>

     31. Entire Agreement. This Lease Agreement, together with all other Lease
Documents constitute the entire understanding or agreement between Lessor and
Lessee and their affiliates with respect to the leasing of the Equipment, and
there is no understanding or agreement, oral or written, which is not set forth
herein or therein. Neither this Lease Agreement nor any Equipment Order may be
amended except by a writing signed by Lessor and Lessee.

     32. Execution in Counterparts. This Lease Agreement may be executed in
several counterparts, each of which shall be an original and all of which shall
constitute but one and the same instrument.

     IN WITNESS WHEREOF, Lessor and Lessee have executed this Lease Agreement as
of the day and year first above written.

Lessor:                                 Lessee:

Clearwire Corporation,                  6311458 Canada Ltd.,
a Delaware corporation                  a Canadian federal corporation

By /s/ Ben Wolff                        By /s/ Boyd Craig
   ----------------------------------      -------------------------------------
Name: Ben Wolff                         Name: Boyd Craig
      -------------------------------         ----------------------------------
Title: Executive Vice President         Title: President
       ------------------------------          ---------------------------------

                                       16

<PAGE>

                                    EXHIBIT A

                                NEXTNET WARRANTY

GENERAL WARRANTIES: NextNet warrants that any components of the Equipment
manufactured by NextNet with defects caused by faulty materials and/or
workmanship will be repaired or replaced at NextNet's option, if such defective
component is returned to NextNet at any time during the corresponding time
period set forth below:

<TABLE>
<CAPTION>
COMPONENT       TERM OF WARRANTY COVERAGE
---------       -------------------------
<S>             <C>
Base Stations   2 years from ship date
</TABLE>

REMEDIES AND DAMAGES: If repair is not possible or economical for NextNet,
NextNet has the choice to refund the purchase price of these goods or to deliver
new or refurbished goods. Replacement goods will provided with a full warranty
as appropriate for new goods. NextNet's liability shall be strictly limited to
replacing, repairing or issuing credits at its option for any goods returned
within the stated term of warranty coverage for such component. NextNet shall
not be liable for incidental or consequential damages including, but not limited
to costs of removal and reinstallation of goods, loss of goodwill, and loss of
profits or use. Any components manufactured by a third party vendor shall be
entitled to any warranty coverage provided by such third party vendor and will
be subject to any limitations provided in such third party warranty coverage. If
the requirements set forth above and described in these warranty provisions are
not complied with, NextNet's warranty shall not apply and NextNet shall be
discharged from all liability arising from the supply of defective goods.

EXCEPT AS EXPRESSLY PROVIDED HEREIN, NEXTNET MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND, NATURE OR DESCRIPTION, EXPRESS OR IMPLIED, INCLUDING
WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS OF THE GOODS FOR
ANY PARTICULAR PURPOSE, OR NONINFRINGEMENT, AND NEXTNET HEREBY DISCLAIMS THE
SAME.

THE FOREGOING STATES NEXTNET'S SOLE AND EXCLUSIVE OBLIGATION TO CUSTOMER, AND
CUSTOMER'S SOLE REMEDY, WITH RESPECT TO PRODUCT DEFECTS OR INFRINGEMENT CLAIMS
OF ANY KIND.

WARRANTY CLAIMS: NextNet shall not incur any liability under the above warranty
provisions unless:

a)   NextNet is promptly notified in writing upon discovery by Customer that
     such components do not conform to the warranty, and the appropriate invoice
     number and date of purchase information is supplied;

b)   The alleged defective components are returned to NextNet carriage pre-paid

                                       17

<PAGE>

     (NextNet will return repaired or replaced components to Customer carriage
     pre-paid); and

c)   Examination by NextNet of the components confirms that the alleged defect
     exists and has not been caused by misuse, neglect, method of storage,
     faulty installation, handling, or by alteration or accident.

VARIATION OF TERMS: NextNet reserves the right to vary the terms and conditions
of these warranty provisions at any time. Any changes in warranty policy will be
communicated to customers, and will not apply to products already purchased.

                                       18<PAGE>

                                                                  Exhibit 10.37
                                                                  EXECUTION COPY

================================================================================

                               PURCHASE AGREEMENT

                                     between

                             BAYPOINT ST. LOUIS, LLC
                                       and

                              CLEARWIRE CORPORATION
                                       and

                         CLEARWIRE SPECTRUM HOLDINGS LLC

                          Dated as of September 9, 2005

[*** Confidential Treatment Requested]

================================================================================

<PAGE>

                                TABLE OF CONTENTS

                                                                            Page

ARTICLE 1    DEFINITIONS......................................................1

ARTICLE 2    PURCHASE AND SALE OF ASSETS......................................4

ARTICLE 3    REPRESENTATIONS AND WARRANTIES OF SELLER.........................5

ARTICLE 4    REPRESENTATIONS AND WARRANTIES OF PURCHASER......................9

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...................................................18

                        SCHEDULES AND EXHIBITS

Exhibit A    License

Exhibit B    Form of Instrument of Assignment for License

Exhibit C    Form of Joinder to Amended and Restated Stockholders Agreement

Exhibit D    Form of Stockholder Questionnaire

Exhibit E    Interference Agreements

Exhibit F    Form of Joinder to Registration Rights Agreement

Exhibit G    Form of Side Letter Regarding Registration Rights

                                       i
<PAGE>
                               PURCHASE AGREEMENT

      This PURCHASE AGREEMENT, dated as of September 9, 2005 (the "Effective
Date"), is among Baypoint St. Louis, LLC, a Virginia limited liability company
("Seller"), Clearwire Spectrum Holdings LLC, a Nevada limited liability company
("Purchaser"), and Clearwire Corporation, a Delaware corporation ("Clearwire"),
the parent corporation of Purchaser (for the limited purpose of issuing stock
pursuant to Section 2.3 and for the limited purpose of making the
representations in Article 4 and the applicable covenants in Article 5). Seller,
Clearwire and Purchaser may be referred to herein as "Parties" or each as a
"Party."

      A. Seller holds a license ("License") granted by the FCC authorizing
Seller to construct and operate a Broadband Radio Service ("BRS"), formerly
known as Multipoint Distribution Service, using call sign *** on channels ***
(the "Seller Channels") in the *** market, a copy of which is attached as
Exhibit A.

      B. Seller desires to assign the License to Purchaser, and Purchaser
desires to acquire the License 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:

      "Accredited Investor" means as this term is defined in Rule 501(a) of
Regulation D as promulgated by the U.S. Securities and Exchange Commission under
the Securities Act.

      "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.

      "BRS" is defined in Recital A.

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

      "Claim" is defined in 0Section 8.3(d).

                                       1
<PAGE>

      "Clearwire" is defined in the preamble.

      "Clearwire Stock" is defined in 0Section 2.3.

      "Close" means the process and result of Closing.

      "Closing" is defined in 0Section 2.4.

      "Closing Date" is defined in 0Section 2.4.

      "Confidential Information" means any and all information regarding the
business, finances, operations, products, services and customers of the
Purchaser or Seller and their respective Affiliates, in written or oral form or
in any other medium.

      "Consent" means any consent or approval of Governmental Authorities or
other third parties necessary to authorize, approve or permit the Parties hereto
to consummate the Transactions.

      "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.

      "Deposit" is defined in 0Section 2.2.

      "Disclosure Memorandum" means that certain draft Disclosure Memorandum of
Clearwire dated March 14, 2005, a copy of which has been provided to Seller.

      "Effective Date" is defined in the preamble.

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

      "FCC Application" is defined in 0Section 5.5.

      "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 reconsideration that may be designated by statute or
rule 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.

                                       2
<PAGE>

      "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.

      "Interference Agreements" means the agreements listed in Exhibit E hereto
and further described in Section 3.4(e) below.

      "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/Option Agreement" means that certain Tower Site Lease Option, dated
August 2, 2002, by and among ***.

      "License" is defined in Recital A.

      "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, other than: (1)
for liens for taxes not yet due and payable, and (2) rights and restrictions
imposed by FCC rules or policies, or the Communications Act of 1934, as amended,
and (3) the Interference Agreements listed in Exhibit E hereto.

      "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 2.3.

      "Purchaser" is defined in the preamble.

      "Purchaser Indemnified Parties" is defined in 0Section 8.2.

      "Reasonable Efforts" means the efforts that a reasonably prudent person or
entity desirous of achieving a result would use in similar circumstances to
ensure that such result is achieved; provided, however, that an obligation to
use Reasonable Efforts under this Agreement does not require the Party subject
to that obligation to take actions or incur costs that would result in a
materially adverse change in the benefits such Party expects to realize from
this Agreement.

      "Securities Act" means the Securities Act of 1933, as amended.

      "Seller" is defined in the preamble.

                                       3
<PAGE>

      "Seller Channels" is defined in Recital A.

      "Seller Indemnified Parties" is defined in 0Section 8.3.

      "Tax" or "Taxes" means any taxes, assessment, duties, fees, levies,
imposts, deductions, or withholdings, including income, gross receipts, ad
valorem, value added, excise, real or personal property, asset, sales, use,
license, payroll, transaction, capital, net worth and franchise taxes, estimated
taxes, withholding, employment, social security, workers compensation, utility,
severance, production, unemployment compensation, occupation, premium, windfall
profits, transfer and gains taxes, or other governmental charges of any nature
whatsoever, imposed by any Taxing Authority of any government or country or
political subdivision of any country, and any liabilities with respect thereto,
including any penalties, additions to tax, fines or interest thereon and
includes any liability for Taxes of another person by contract or as a
transferee or successor.

      "Tax Return" means any report, return, statement, estimate, declaration,
notice, form or other information required to be supplied to a Taxing Authority
in connection with Taxes.

      "Taxing Authority" shall mean the Internal Revenue Service and any other
Governmental Authority responsible for the administration of any Tax.

      "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, Seller shall sell, assign, transfer, convey
and deliver to Purchaser or another wholly-owned subsidiary of Clearwire,
designated by Clearwire as provided in Section 5.7 hereafter, and Purchaser
shall purchase and assume from Seller all of Seller's right, title and interest
as of the Closing Date in and to: (i) the License, free and clear of all Liens;
and (ii) the Interference Agreements. The Lease/Option Agreement is specifically
excluded from Seller's sale, assignment, transfer, conveyance and delivery
herein to Purchaser or any other wholly-owned subsidiary of Clearwire, and
Purchaser shall not hereby purchase or assume from Seller any of Seller's right,
title and interest under the Lease/Option Agreement.

      Section 2.2 Deposit. Within five (5) Business Days of the date of this
Agreement, Purchaser shall pay Seller *** as a deposit (the "Deposit"). The
Deposit shall be applied against the Purchase Price (as defined below)
dollar-for-dollar in the event that the Transactions described by this Agreement
close. Seller shall return the Deposit to Purchaser, within five (5) Business
Days of such termination, in the event that this Agreement is terminated by
Seller pursuant to Section 7.1(b) or 7.1(d) before the Transactions Close. The
Deposit shall be retained by Seller, at its election, as liquidated damages in
the event that this Agreement is terminated by Seller before the Transactions
Close pursuant to Section 7.1(c).

                                       4
<PAGE>

      Section 2.3 Payment of Purchase Price. As consideration for sale and
assignment of the License and the Interference Agreements to Purchaser,
Purchaser shall deliver or cause to be delivered to Seller the monetary funds
and stock (the "Purchase Price") in the amounts and quantities, and at the times
specified below:

            (a) At the Closing, the Deposit shall be first applied against the
      Purchase Price as described above;

            (b) [***] shall be payable at the Closing in immediately
      available funds via wire transfer to an account designated by Seller;

            (c) With respect to the balance of the Purchase Price after
      application of the Deposit and the wire transfer of funds, Clearwire shall
      issue to Seller an aggregate total of *** Shares of Clearwire's Class A
      common stock ("Clearwire Stock"); provided, however, if at the time of
      Closing, Seller is not an Accredited Investor, then the portion of the
      Purchase Price otherwise payable to Seller in Clearwire Stock, shall be
      payable to Seller at the Closing, in immediately available funds via wire
      transfer to an account designated by Seller, in substitution for delivery
      of the Clearwire Stock to Seller, at the value of the Clearwire Stock as
      of the date of this Agreement. The number of shares of the Clearwire Stock
      shall be adjusted, if necessary to account for any stock split, cash
      dividend, stock dividend, or other distribution or recapitalization in
      respect of Clearwire's issued and outstanding stock between now and the
      Closing.

      Section 2.4 Closing. Upon the terms and subject to the conditions hereof,
the closing of the sale of the License (the "Closing") shall take place at the
offices of Davis, Wright Tremaine, LLP, 1500 K Street, N.W., Washington, DC
20005, within five (5) Business Days following the date on which the last
condition under Article 6 has been satisfied or waived, or at such other time
and place as the Parties may mutually agree. The date on which Closing occurs is
called the "Closing Date."

               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 Commonwealth of Virginia, 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 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

                                       5
<PAGE>

creditors' rights, and to general equity principles and FCC Consent. Each other
agreement, document, instrument or certificate contemplated by this Agreement to
be delivered by Seller to Purchaser, if and when so delivered, will be duly
executed and delivered by Seller and 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 and FCC Consent.

      Section 3.3 No Conflicts or Consents. Neither the execution, delivery and
performance by Seller of this Agreement, nor 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 the License; (ii) require any Consent,
other than the Consent of the FCC; or (iii) violate any Law by which Seller is
bound.

      Section 3.4 FCC Matters.

            (a) The license attached hereto as Exhibit A is a true and correct
      copy of the License. There is no other condition, to the knowledge of
      Seller, imposed by the FCC as part of the License that is neither set
      forth on the face of the License as issued by the FCC, or contained in the
      FCC rules applicable generally to the licenses of the type, nature and
      class or location of the License. No other licenses or authorizations are
      required from the FCC for the operations of facilities in compliance with
      the License on the Seller Channels in the market area as of the Effective
      Date. Except as set forth in Section 3.5 below, no Person other than
      Seller has any right, title, interest or claim in or to the License. The
      License has been granted to Seller by Final Order and is in full force and
      effect.

            (b) Excluding the proceedings in WT Docket No. 03-66, there is not
      pending or, to the knowledge of Seller, threatened against Seller or the
      License before the FCC or any other Governmental Authority 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, the License, (ii) seeks the
      imposition of any modification or amendment with respect thereof, (iii)
      which would adversely affect the ability of Seller to consummate the
      Transactions, or (iv) seeks the payment of a fine, sanction, penalty,
      damages or contribution in connection with the use of the License. To
      Seller's knowledge 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.

            (c) Other than under the Interference Agreements listed in Exhibit E
      hereto, Seller has not located, in a search of its readily available
      records as of the Effective Date, any other written agreements to accept
      or allow any electromagnetic

                                       6
<PAGE>

      interference from any other FCC licensees, permittees or applicants with
      respect to the License and/or Seller Channels, and, to Seller's knowledge,
      no other such licensees, permittees or applicants have agreed to accept
      electromagnetic interference from Seller with respect to their respective
      facilities.

            (d) To Seller's knowledge, Seller is in compliance with all
      applicable Laws except for any non-compliance that, individually or in the
      aggregate, will not have a material adverse effect on the License or on
      Seller's ability to consummate the Transactions. To Seller's knowledge,
      since the grant of the Seller's most recent renewal application for the
      License, Seller has complied in all material respects with FCC Laws
      applicable to the License, including without limitation the Communication
      Act of 1934, as amended. Since the issuance of the License, Seller has not
      received a notice of non-compliance from the FCC. To Seller's knowledge
      all material documents required to be filed at any time by Seller with the
      FCC with respect to the License have been timely filed or the time period
      for such filing has not lapsed. To Seller's knowledge, all such documents
      filed since the date that the License was issued to Seller are correct in
      all material respects. All amounts owed to the FCC in connection with the
      License have been timely paid.

            (e) As of the Effective Date, the facilities subject to the License
      for which certification or notification of completion of construction has
      been filed with the FCC are not operating.

      Section 3.5 Title to License/Lease. Except as recited in this Section,
Seller holds the License free and clear of any Liens.

      Section 3.6 Taxes. All Tax Returns required to be filed by Seller have
been timely filed, and Seller is not the beneficiary of any extension of time
within which to file any Tax Return. All such Tax Returns are true, complete and
correct in all material respects. To Seller's knowledge all Taxes owed by Seller
(whether or not shown on any Tax Return) have been paid, including, without
limitation with respect to any BRS transmission facilities. Seller has withheld
and paid to the appropriate Taxing Authority all Taxes required to have been
withheld and paid in connection with amounts paid or owing to any employee,
independent contractor, creditor, member or other third party. Seller has not
waived any statute of limitations in respect to Taxes or agreed to any extension
of time with respect to an assessment or deficiency of Taxes. No adjustment
relating to any Tax Returns filed by Seller has been proposed by any Taxing
Authority and remains unresolved. There are no Tax Liens on the License, other
than Liens for Taxes that are not yet due and payable. Seller is not a "foreign
person" within the meaning of Section 1445 of the Code. The License does not
secure any indebtedness, the interest on which is tax-exempt under Section
103(a) of the Code. The License is not "tax-exempt use property" within the
meaning of Section 168(h) of the Code.

                                       7
<PAGE>

      Section 3.7 Litigation. Other than proceedings of general applicability
(such as WT Docket No. 03-66), there is no legal proceeding now in progress or
pending or, to the knowledge of the Seller, threatened against Seller or the
License or the business of Seller, nor to the knowledge of Seller 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.

      Section 3.8 Brokers. Seller has engaged Paul Lucci ("Mr. Lucci") and
Cheval Capital, Inc. ("Cheval") as brokers regarding the Transactions, and
Seller shall be solely responsible for payment of any brokerage commissions to
Mr. Lucci and Cheval. Other than Mr. Lucci and Cheval, neither Seller nor any of
its Affiliates has employed any other broker or finder or incurred any liability
for any other brokerage or finding fees or commissions in connection with the
Transactions.

      Section 3.9 Securities Representations.

            (a) Seller is an Accredited Investor. Seller is acquiring the
      Clearwire Stock for its own account, for investment purposes only and not
      with a view to the distribution (as such term is used in Section 2(11) of
      the Securities Act) thereof. Seller understands that the Clearwire Stock
      has not been registered under the Securities Act and cannot be sold or
      otherwise transferred unless subsequently registered under the Securities
      Act or an exemption from such registration is available.

            (b) Seller is knowledgeable and experienced in the
      telecommunications industry and is capable of evaluating the risks and
      merits of the transactions contemplated by this Agreement, including the
      acquisition of shares of Clearwire Stock, and making an informed decision
      with respect thereto. Seller has received the Disclosure Memorandum from
      Purchaser in sufficient time to review and analyze its contents prior to
      the execution of this Agreement. Seller and its representatives have had
      sufficient opportunity to ask questions of and receive answers from
      Purchaser and Clearwire concerning the business of Clearwire, its
      operations, assets and liabilities. Seller and its representatives have
      had an opportunity to review all documents and records concerning
      Clearwire and its business that Seller has requested. Seller has conducted
      its own independent assessment, analysis and investigation with respect to
      Clearwire and its business at the time of entering into this Agreement and
      has agreed to enter into this Agreement and accept Clearwire Stock as
      partial payment of the Purchase Price based solely on this assessment,
      analysis and investigation, and the representations and warranties of
      Purchaser and Clearwire set forth in this Agreement and the information
      contained in the Disclosure Memorandum.

            (c) Seller is aware that Clearwire is a speculative enterprise, that
      certain of the information disclosed to it contain forward looking
      statements which involve risks and uncertainties, and that Clearwire's
      actual results may differ significantly from the results discussed in
      these forward looking statements. Seller further acknowledges that the
      value of Clearwire's respective assets is inherently uncertain and is
      dependent upon market, technological, and regulatory developments
      concerning feasible and

                                       8
<PAGE>

      allowable uses. Seller represents and warrants to Purchaser and Clearwire
      that it has assessed these factors independently and has agreed to enter
      into this Agreement without reliance upon or expectation of any
      disclosures of any kind from Purchaser or Clearwire, except as set forth
      in this Agreement and the Disclosure Memorandum.

            (d) For purposes of application of state securities law, Seller is a
      resident of the jurisdiction of the District of Columbia.

             ARTICLE 4 REPRESENTATIONS AND WARRANTIES OF PURCHASER

      Each of Clearwire and Purchaser hereby represents and warrants to Seller
as follows:

      Section 4.1 Existence; Authorization. Each of Clearwire and Purchaser is
lawfully existing and in good standing under the laws of the State of Delaware,
has all requisite power and authority to enter into this Agreement and to
perform the obligations to be performed by it under this Agreement. Except for
obtaining board approval from Clearwire, the execution and delivery of this
Agreement, and the performance by Purchaser and Clearwire of its respective
obligations hereunder, have been duly authorized by all necessary action on the
part of Purchaser and Clearwire, respectively.

      Section 4.2 Enforceability. This Agreement has been duly executed and
delivered by each of Clearwire and Purchaser and is a legal, valid and binding
obligation of each of Clearwire and Purchaser, enforceable against Clearwire and
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, and FCC Consent. Each other agreement, document, instrument or
certificate contemplated by this Agreement to be delivered by Purchaser or
Clearwire to Seller, if and when so delivered, will be duly executed and
delivered by each of Clearwire and Purchaser and a legal, valid and binding
obligation of each of Clearwire and Purchaser, enforceable against Clearwire and
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, and FCC Consent.

      Section 4.3 No Conflicts or Consents. Neither the execution, delivery and
performance by Clearwire or Purchaser of this Agreement, nor the consummation of
the Transactions by Clearwire or Purchaser, will (i) constitute, with or without
the giving of notice or passage of time or both, a breach, violation or default
by Clearwire or Purchaser or any of their Affiliates, 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 Clearwire or Purchaser; (ii) require
any Consent, other than the Consent of the FCC and board approval from
Clearwire; or (iii) violate any Law by which Clearwire or Purchaser is bound.

                                       9
<PAGE>

      Section 4.4 Brokers. Neither Clearwire, Purchaser, nor any affiliate of
either has 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 Securities to be Issued to Seller. Purchaser and Clearwire
hereby jointly and severally represent and warrant to Seller that upon the
issuance and delivery by Clearwire to Seller pursuant to this Agreement, the
Clearwire Stock will be duly issued, fully paid and non-assessable, and will be
free of restrictions on transfer other than restrictions on transfer under this
Agreement and the Amended and Restated Stockholders Agreement dated March 16,
2004, by and among Clearwire and Clearwire's stockholders to which Seller will
be a party to by joinder, the Registration Rights Agreement dated March 16, 2004
to which Seller will be a party to by joinder and applicable securities laws.
Prior to the Closing, Clearwire shall deliver to Seller any updates to the
Disclosure Memorandum or other updated disclosures it has delivered to third
party investors prior to the Effective Date. Each of Purchaser and Clearwire
represents and warrants that Clearwire's Board of Directors has approved the
issuance of the Clearwire Stock pursuant to this Agreement and Clearwire's
execution, delivery and performance of this Agreement. Subject in part to the
truth and accuracy of the Seller's representations in Section 3.9, the offer,
sale and issuance of the Clearwire Stock as contemplated by this Agreement are
exempt from the registration requirements of the Securities Act and applicable
state securities laws, and Clearwire will take no action hereafter that would
cause the loss of such exemptions.

      Section 4.6 FCC Qualification. Purchaser is legally, technically,
financially, and otherwise qualified to acquire and hold the License from Seller
under the rules and policies of the FCC and the Communications Act of 1934, as
amended.

      Section 4.7 Proceedings. There is no action, proceeding or investigation
pending or, to the knowledge of Purchaser, threatened against Purchaser, or
Purchaser's property or assets, that would be reasonably expected to have an
adverse effect on Purchaser's ability to consummate the Transactions, or which
seeks to prevent or challenge the Transactions.

                    ARTICLE 5 COVENANTS AND OTHER AGREEMENTS

      Section 5.1 Consummation of Transactions/Clearwire Board Approval. From
and after the date of this Agreement, each Party shall use Reasonable 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. Clearwire covenants that it will seek
approval of the transactions contemplated by this Agreement at the next
regularly scheduled meeting of the board of directors of Clearwire after the
execution of this Agreement, if not before.

                                       10
<PAGE>

      Section 5.2 Compliance with Law. Prior to Closing, Seller shall comply in
all material respects with Laws applicable to the License.

      Section 5.3 Certain Notices. Prior to the Closing, each Party shall
promptly notify the other Parties in reasonable detail:

            (a) upon the commencement of, or the impending or threatened
      commencement of, or upon obtaining knowledge of any facts that would give
      rise to, any claim, action or proceeding brought to enjoin the
      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 License or its use;

            (b) upon the occurrence of, or the impending or threatened
      occurrence of, or 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 until the Closing shall use Reasonable Efforts to
      prevent or promptly remedy such breach; 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 License or its use.

           Section 5.4 Confidentiality. Pursuant to this Agreement and the
performance thereof, each Party may receive certain Confidential Information.
The use of such Confidential Information shall be governed by that certain
letter agreement addressed to Seller from Clearwire, dated September 16, 2004
(the "Confidentiality Agreement"); provided, however, nothing in this Agreement
or the Confidentiality Agreement shall prevent a Party from disclosing
information that is required to be disclosed pursuant to federal securities
laws, but in such event, only to the extent such disclosure is required. In
addition, Seller acknowledges and agrees that the financial terms of this
Agreement may be required to be separately stated in the consolidated financial
statements of Purchaser and/or its Affiliates and that the disclosure by
Purchaser or its Affiliates of such financial statements shall not be a breach
of this Agreement or the Confidentiality Agreement. Purchaser agrees to
undertake to comply with the Confidentiality Agreement with regard to
Confidential Information as if it were Clearwire.

      Section 5.5 Further Assurances. Prior to, at and following the Closing,
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.

      Section 5.6 FCC Qualifications. Seller and Purchaser each hereby covenants
and agrees that, prior to the Closing, it shall use Reasonable Efforts not to
take action that will remove any of those qualifications required by FCC rules
or policies, or the Communications Act of 1934, as amended, for it to hold the
License.

                                       11
<PAGE>

      Section 5.7 FCC Consent. Seller and Purchaser will use Reasonable Efforts
to prepare all application forms and related exhibits, certifications and other
documents necessary to secure the Consent of the FCC to the Transactions
(collectively, the "FCC Application") and to file the FCC Application within ten
(10) Business Days following the Effective Date. If Purchaser desires to
designate another wholly-owned subsidiary of Clearwire to receive the License at
the Closing, it may do so at any time prior to the filing of the FCC Application
without restriction, or at any time after the filing of the FCC Application only
if such designation would not result in a delay in the FCC's consideration of
the FCC Application. Seller and Purchaser each will promptly and diligently
prepare, file and prosecute all necessary amendments, briefs, pleadings,
petitions for reconsideration, applications for review, waiver requests,
documents and supporting data, and take all such actions and give all such
notices as may be required or requested by the FCC or as may be appropriate to
expedite the grant of the FCC Application without conditions materially adverse
to Seller or Purchaser. If any person or entity petitions the FCC to deny the
FCC Application, or if the FCC grants such application and any person or entity
petitions for reconsideration or review of such grant before the FCC or appeals
or applies for review in any judicial proceeding, then Seller and Purchaser will
use their Reasonable Efforts to oppose such petition before the FCC or defend
such grant by the FCC. If the FCC denies the FCC Application or grants such
application with conditions materially adverse to Seller or Purchaser, then if
requested to do so by the other Party, Seller and Purchaser will use their
Reasonable Efforts to secure reconsideration or review of such action. If the
Closing has not occurred within 180 days following the date of the grant of the
FCC Application, Seller and Purchaser shall use Reasonable Efforts to obtain
such extensions of the effectiveness of such grant as is reasonably necessary to
permit the scheduling of Closing pursuant to Section 2.4. Purchaser will be
responsible for the payment of all FCC application filing fees incurred in
connection with this Section 5.7.

      Section 5.8 Seller Affirmative Covenants. From the Effective Date until
the Closing Seller shall use Reasonable Efforts to (a) preserve the License; and
(b) comply with all Laws applicable to the License.

      Section 5.9 Seller Negative Covenants. Subject to the requirements of WT
Docket No. 03-66, 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 or dispose of the License or of the spectrum to be
covered by the License or any interests therein or portion thereof, or negotiate
therefore, or (b) create, incur or suffer to exist any Lien or other liability
on the License or the spectrum to be covered by the License or any interest
therein.

      Section 5.10 Access. Subject to the provisions of Section 5.4 above
regarding confidentiality, between the date of this Agreement and the Closing
Date, Seller shall, during normal business hours and following reasonable
advance written notice from Purchaser (a) give Purchaser and its representatives
and advisors access to all books and records of Seller relating to the License;
(b) permit Purchaser and its representatives and advisors to make such
inspections thereof as Purchaser may reasonably request; and (c) cause the
officers and advisors of Seller to furnish Purchaser with such information with
respect to the License as Purchaser may from time to time reasonably request.

                                       12
<PAGE>

      Section 5.11 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 Reasonable Efforts consistent with such applicable Law to consult
with the other party with respect to the text thereof.

                        ARTICLE 6 CONDITIONS TO CLOSING

      Section 6.1 Conditions to the Obligations of Both Parties. Each Party's
obligation to consummate the Transactions contemplated by this Agreement are
subject to the satisfaction or waiver, on or prior to the Closing Date, of each
of the following conditions, as applicable to the Party specified:

            (a) The FCC shall have granted the FCC Application, such grant shall
      have become Final Order, and such Final Order shall be in full force and
      effect; and all other notices, filings and Consents required to be made or
      obtained prior to the Closing by either Party or any of its respective
      Affiliates with any Governmental Authority in connection with the
      execution and delivery of this Agreement and the consummation of the
      Transactions shall have been made or obtained.

            (b) 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.

      Section 6.2 Conditions to the Obligations of Seller. Seller's obligation
to consummate the Transactions contemplated by this Agreement are subject to the
satisfaction or waiver on or prior to the Closing Date of the following
conditions:

            (a) The representations and warranties of Purchaser and Clearwire
      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 Closing as if made
      on and as of the 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 Seller shall have received certificates to such effect
      dated the Closing Date and executed by a duly authorized officer of
      Purchaser and Clearwire, respectively.

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

                                       13
<PAGE>

            (c) Purchaser and Clearwire having delivered to Seller the Purchase
      Price pursuant to Section 2.3.

            (d) If Seller is an Accredited Investor on the Closing Date and is
      to receive Clearwire Stock pursuant to Section 2.3, Purchaser shall have
      executed and delivered to Seller: (i) a joinder, attached hereto as
      Exhibit C, to the Amended and Restated Stockholders Agreement, dated March
      16, 2004, by and among Clearwire and Clearwire's stockholders; (ii) a
      joinder to the Registration Rights Agreement, dated as of March 16, 2005,
      between Clearwire Corporation and certain holders of Clearwire's Class A
      Common Stock attached hereto as Exhibit F; and (iii) a side letter,
      attached hereto as Exhibit G, with respect to the Registration Rights
      Agreement.

            (e) Purchaser shall have executed and delivered to Seller an
      Instrument of Assignment with respect to the License and the Interference
      Agreements in the form of Exhibit B.

      Section 6.3 Conditions to the Obligations of Purchaser. Purchaser's
obligation to consummate the Transactions contemplated by this Agreement are
subject to the satisfaction or waiver on or prior to the 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 Closing as if made on and as of the
      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
      Purchaser shall have received certificates to such effect dated the
      Closing Date and executed by a duly authorized officer of Seller.

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

            (c) Seller shall have executed and delivered to Purchaser an
      Instrument of Assignment with respect to the License and the Interference
      Agreements in the form of Exhibit B.

            (d) If Seller is an Accredited Investor on the Closing Date and is
      to receive Clearwire Stock pursuant to Section 2.3, Seller shall have
      executed and delivered to Clearwire: (i) a joinder, attached hereto as
      Exhibit C, to the Amended and Restated Stockholders Agreement, dated March
      16, 2004, by and among Clearwire and Clearwire's stockholders; (ii) a
      joinder to the Registration Rights Agreement, dated as of March 16, 2005,
      between Clearwire Corporation and certain holders of Clearwire's Class A
      Common Stock attached hereto as Exhibit F; and (iii) a side letter,
      attached hereto as Exhibit G, with respect to the Registration Rights

                                       14
<PAGE>

      Agreement; and (iv) a completed Stockholder Questionnaire in the form
      attached hereto as Exhibit D.

            (e) Seller shall have delivered to Purchaser a completed IRS Form
      W-9.

            (f) Clearwire's board of directors shall have approved the
      transactions contemplated by this Agreement.

                             ARTICLE 7 TERMINATION

      Section 7.1 Termination. This Agreement may be terminated at any time:

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

            (b) (i) by Seller if the board of directors of Clearwire has not
      approved the transactions contemplated by this Agreement on or before
      September 30, 2005, (ii) by Purchaser if the board of directors of
      Clearwire does not approve the transactions contemplated by this Agreement
      at its next regularly scheduled board meeting after the date of this
      Agreement, or (iii) 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 any Party upon the material breach of any representation,
      warranty or covenant in this Agreement by another Party if such breach is
      not cured within ten (10) days following written notice by the
      non-breaching Party which notice shall describe the breach; or

            (d) by either Purchaser or Seller if the Closing has not 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 the
      terminating Party.

      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) Seller's obligation to return the Deposit as set forth in
      Section 2.2;

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

            (c) 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.

                                       15
<PAGE>

                        ARTICLE 8 SURVIVAL AND REMEDIES

      Section 8.1 Survival. The representations and warranties contained in this
Agreement, the Instrument of Assignment for License and any certificates given
by one or more Parties to any other Party as an incident to Closing the
Transactions of this Agreement shall survive the Closing until one (1) year
after the Closing Date and shall expire at such time. The covenants and other
agreements contained in this Agreement which do not expire by their terms on or
before the Closing shall survive the Closing until the expiration of the
applicable statute of limitations (including any waivers or extensions thereof)
with respect to such matters.

      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 Seller pursuant to this Agreement, to be
      materially true and correct as of the dates made;

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

            (c) the ownership of the License and the Interference Agreements
      prior to the Closing.

      Section 8.3 Purchaser Indemnification. Purchaser shall indemnify Seller,
and Seller's representative members, managers, officers, employees, agents,
successors and assigns (collectively, 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 Purchaser or Clearwire pursuant to this
      Agreement, to be materially 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; and

            (c) the ownership of the License and the Interference Agreements
      following the Closing.

      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 0Section 8.2 or 0Section 8.3
      hereof (each, a

                                       16
<PAGE>

      "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. The indemnifying party shall not, without the express
      written consent of the indemnified party, settle or compromise any Claim,
      or consent to the entry of any judgment against the indemnified party that
      does include an unconditional term thereof giving the indemnified party a
      full and complete release from all liability with respect to 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

                                       17
<PAGE>

      obligations with respect thereto except to the extent that the
      indemnifying party can demonstrate actual loss and prejudice as a result
      of such failure.

            (d) Notwithstanding anything to the contrary in this Article 8 or
      elsewhere in this Agreement, no Party shall be required to indemnify or
      hold any other Party harmless under this Agreement or any certificates,
      documents, agreements and instruments delivered pursuant to the terms of
      this Agreement unless such right to indemnification or to be held harmless
      is asserted by written notice from indemnified Party or Parties to the
      indemnifying Party or Parties received within twelve (12) months of the
      Closing Date describing with specificity the facts giving rise to the
      asserted right. In no event shall Damages collected by any one or more of
      Purchaser and Clearwire against Seller exceed the amount of the Purchase
      Price. In no event shall Damages collected by Seller against Purchaser
      and/or Clearwire exceed the amount of the Purchase Price.

      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, EVEN IF ADVISED AT THE TIME OF BREACH OF THE POSSIBILITY OF SUCH
DAMAGES, PROVIDED, HOWEVER, THAT THIS LIMITATION SHALL NOT APPLY TO THE RIGHT OF
INDEMNIFICATION BY A PARTY UNDER SECTIONS 8.2 AND 8.3 HEREOF FOR SUCH TYPES OF
DAMAGES UNDER A CLAIM MADE BY A THIRD-PARTY.

                            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, except with regard to the
Letter Agreement, dated September 16, 2004, referenced in Section 5.4 above.

      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.

                                       18
<PAGE>

      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 any Party without the
prior written consent of the other Party; provided, however, that Purchaser may,
at any time prior to the Closing, assign this Agreement or Purchaser's right to
receive assignment of the License without the consent of Seller, but subject, in
all circumstances, to the limitations set forth in Section 5.7 above, and
further provided that Purchaser and Clearwire shall not be released from any
obligations hereunder as a result of such assignment.

      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, overnight delivery 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 or overnight
delivery service that made such delivery) or (ii) upon delivery if sent by
United States Postal Service certified mail, return receipt requested, as
evidenced by the written receipt of delivery to the applicable addresses set
forth below (or such other address which any Party may from time to time
specify):

            If to Seller:

            Baypoint St. Louis, LLC
            2700 Chainbridge Road, N.W.
            Washington, DC 20016
            Attention: William Barnard
            Facsimile: (202) 363-4266

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

            Fletcher, Heald & Hildreth PLC
            1300 N. 17th Street, 11th Floor
            Arlington, VA 22209
            Attention:  Donald Evans, Esq.
            Facsimile: (703) 812-0486

            If to Purchaser:

            Clearwire Spectrum Holdings LLC
            5808 Lake Washington Blvd. N.E.
            Suite 300
            Kirkland, WA 98033
            Attention:  Benjamin G. Wolff
            Facsimile: (425) 828-8061

                                       19
<PAGE>

            With a copy to:

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

            If to Clearwire:

            Clearwire Corporation
            5808 Lake Washington Blvd. N.E.
            Suite 300
            Kirkland, WA 98033
            Attention:  Benjamin G. Wolff
            Facsimile: (425) 828-8061

            With a copy to:

            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.

            (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.

      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 Section 5.7 will be
borne by Purchaser.

                                       20
<PAGE>

      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.

                 BAYPOINT ST. LOUIS, LLC

                 By: BAYPOINT TV, INC., its sole member

                 By:  /s/ William M. Barnard
                     ----------------------------------------------------------
                 Name:  William M. Barnard
                       --------------------------------------------------------
                 Title:   President
                        -------------------------------------------------------

                 CLEARWIRE CORPORATION

                 By:  /s/ Benjamin G. Wolff
                     ----------------------------------------------------------
                 Name  Benjamin G. Wolff
                 Title    Executive Vice-President

                 CLEARWIRE SPECTRUM HOLDINGS LLC

                 By:  /s/ Benjamin G. Wolff
                     ----------------------------------------------------------
                 Name  Benjamin G. Wolff
                 Title:   Executive Vice-President

                                       22
<PAGE>

                                    Exhibit A
                                     LICENSE

[INSERT COPY OF LICENSE HERE]

                                   Exhibit A
<PAGE>

                                    EXHIBIT B

                            INSTRUMENT OF ASSIGNMENT

      INSTRUMENT OF ASSIGNMENT (the "Instrument of Assignment"), dated as of
          , 2005, by and between Baypoint St. Louis, LLC, a Virginia limited
liability company ("Assignor"), and Clearwire Spectrum Holdings LLC, a Nevada
limited liability company ("Assignee"). Capitalized terms used herein without
definition shall have the respective meanings assigned to them in the Purchase
Agreement (as defined below).

      WHEREAS, Assignor and Assignee have entered into a Purchase Agreement (the
"Purchase Agreement"), dated as of September 9, 2005, pursuant to which,
Assignor agreed to convey to Assignee, and Assignee agreed to acquire, the
License (WLK422);

      WHEREAS, Assignor and Assignee have filed an application with the FCC
requesting the assignment of the certain license to Assignee; and

      WHEREAS, the FCC has granted an application for the assignment of the
License to Assignee;

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

      Assignment. Pursuant to Section 2 of the Purchase Agreement, for valuable
consideration, receipt of which is hereby acknowledged, Assignor, intending to
be legally bound, does hereby sell, assign, transfer, convey, and deliver to
Assignee, its successors and assigns forever, all right and interest of Assignor
in and to the License and the Interference Agreements, free and clear of all
Liens.

      Terms of Purchase Agreement Control. Nothing contained in this Instrument
of Assignment shall in any way supersede, modify, replace, amend, change,
rescind, waive, exceed, expand, enlarge, or in any way affect the provisions of
the Purchase Agreement, including the warranties, covenants, agreements,
conditions and representations contained in the Purchase Agreement and, in
general, any of the rights and remedies, and any of the obligations and
indemnifications, of Assignor or Assignee set forth in the Purchase Agreement.
Without limiting the generality of the foregoing, this instrument is subject to
the limitations of liability in Article 8 and, particularly, Section 8.4(d).

      Miscellaneous. This Instrument of Assignment (a) is executed pursuant to
the Purchase Agreement and may be executed in counterparts, each of which as so
executed shall be deemed to be an original, but all of which together shall
constitute one instrument, (b) shall be governed by and in accordance with the
internal laws of the State of Washington, without regard to the principles of
conflicts of law thereof and (c) shall be binding upon and inure to the benefit
of the Parties hereto and their respective successors and permitted assigns.

                                   Exhibit B
<PAGE>

      IN WITNESS WHEREOF, Assignor and Assignee have each caused this Instrument
of Assignment to be duly executed and delivered as of the date first above
written.

                 BAYPOINT ST. LOUIS, LLC

                 By:  BAYPOINT TV, INC., its sole member

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

                 CLEARWIRE SPECTRUM HOLDINGS LLC

                 By:
                     ----------------------------------------------------------
                 Name:  Benjamin G. Wolff
                 Title:  Executive Vice-President

                                   Exhibit B
<PAGE>

                                   Exhibit C

             JOINDER TO Amended and Restated Stockholders Agreement

                                   Exhibit C
<PAGE>

                                    Exhibit D

                            Stockholder Questionnaire

                                   Exhibit D
<PAGE>

                                    Exhibit E

                             Interference agreements

      1. Interference Avoidance Agreement, executed in 1995, by and among Silex
R-1 School District, Gasconade County R-1 School District, Wellsville-Middletown
R-1 School District, Warren County R-3 School District, Van-Far R-1 School
District, RuralVision Central, Inc., Heartland Wireless Communications, Inc.,
St. Louis Regional Educational & Public Television Commission, HITEC, Inc., St.
Louis Community College, Instructional Opportunities, Inc., Louis R. du Treil,
Baypoint TV, Inc., Missouri Baptist College, ITFS, Inc., Cooperating School
Districts of St. Louis Suburban Area, St. Louis Police Department, Alda
Multichannels, Ltd., Westinghouse Broadcasting Co., Inc. and People's Choice TV
Corp.

      2. Interference Avoidance Agreement, executed in 1995, by and among St.
Louis Regional Educational & Public Television Commission, HITEC, Inc., St.
Louis Community College, Instructional Opportunities, Inc., Louis R. du Treil,
Baypoint TV, Inc., Missouri Baptist College, ITFS, Inc., Cooperating School
Districts of St. Louis Suburban Area, St. Louis Police Department, Alda
Multichannels, Ltd., Westinghouse Broadcasting Co., Inc., People's Choice TV
Corp., Christian Fellowship School, De Soto Consolidated School District,
Nashville Community School District #9, Waltonville Community Unit #1,
Sesser-Valier Community #196 and Heartland Wireless Communications, Inc.

      3. Interference Avoidance Agreement, executed in 1995, by and among
Brownstown Community Unit School District #201, Patoka Community Unit School
District #100, Altamont Community Unit School District #10, Mulberry Grove
Community Unit School District, Salem Community High School, Heartland Wireless
Communications, Inc., St. Louis Regional Educational & Public Television
Commission, HITEC, Inc., St. Louis Community College, Instructional
Opportunities, Inc., Louis R. du Treil, Baypoint TV, Inc., Missouri Baptist
College, ITFS, Inc., Cooperating School Districts of St. Louis Suburban Area,
St. Louis Police Department, Alda Multichannels, Ltd., Westinghouse Broadcasting
Co. Inc., and People's Choice TV Corp.

      4. Interference Avoidance Agreement, executed in 1995, by and among Odin
High School, KasKaskia Cikkege District, Webber Township High School District
#204, Mt. Vernon Township High School District #201, South Central County Unit
School District #401, North Wayne County Unit School District #200, Southern
Illinois Wireless Cable Company, Salem Mobile & Modular Home Sales, Norris
City-Omaha-Enfield County Unit School District #3, Lawrence Williams, Heartland
Wireless Communications, Inc., St. Louis Regional Educational & Public
Television Commission, HITEC, Inc., St. Louis Community College, Instructional
Opportunities, Inc., Louis R. du Treil, Baypoint TV, Inc., Missouri Baptist
College, ITFS, Inc. Cooperating School Districts of St. Louis Suburban Area, St.
Louis Police Department, Alda Multichannels, Ltd., Westinghouse Broadcasting
Co., Inc. and People's Choice TV Corp.

      5. Letter Agreement, dated January 5, 1989, by and among People's Choice
TV Partners, Baypoint TV, Inc. and Missouri Baptist College.

                                   Exhibit E
<PAGE>

      6. Interference Agreement, dated        , by and between Baypoint St.
Louis, LLC, and St. LouE, LLC.

                                   Exhibit E
<PAGE>

                                    Exhibit F

                    JOINDER TO Registration Rights Agreement

                                   Exhibit F
<PAGE>

                                    Exhibit G

                    Side Letter Regarding Registration Rights

                                   Exhibit G

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