SECOND LIEN PARENT GUARANTY

REFERENCE IS MADE TO THE INTERCREDITOR AGREEMENT DATED AS OF OCTOBER 9, 2008 (AS AMENDED, RESTATED, SUPPLEMENTED OR OTHERWISE MODIFIED FROM TIME TO TIME, THE "INTERCREDITOR AGREEMENT"), AMONG THE COMPANY (AS DEFINED BELOW), GUARANTOR (AS DEFINED BELOW), THE SUBSIDIARIES OF THE COMPANY PARTY THERETO, THE BANK OF NEW YORK MELLON, AS FIRST LIEN COLLATERAL AGENT (AS DEFINED THEREIN), GUARANTIED PARTY (AS DEFINED BELOW), AS SECOND LIEN COLLATERAL AGENT (AS DEFINED THEREIN), AND THE BANK OF NEW YORK MELLON, AS THIRD LIEN COLLATERAL AGENT (AS DEFINED THEREIN). EACH BENEFICIARY HEREUNDER (A) ACKNOWLEDGES THAT IT HAS RECEIVED A COPY OF THE INTERCREDITOR AGREEMENT, (B) CONSENTS TO THE PAYMENT AND LIEN SUBORDINATION PROVIDED FOR IN THE INTERCREDITOR AGREEMENT, (C) AGREES THAT IT WILL BE BOUND BY AND WILL TAKE NO ACTIONS CONTRARY TO THE PROVISIONS OF THE INTERCREDITOR AGREEMENT AND (D) AUTHORIZES AND INSTRUCTS THE GUARANTIED PARTY TO ENTER INTO THE INTERCREDITOR AGREEMENT AS COLLATERAL AGENT AND ON BEHALF OF SUCH NOTE HOLDER. THE FOREGOING PROVISIONS ARE INTENDED AS AN INDUCEMENT TO THE NOTE HOLDERS UNDER THE FIRST LIEN PURCHASE AGREEMENT TO EXTEND CREDIT TO THE COMPANY AND SUCH NOTE HOLDERS ARE INTENDED THIRD PARTY BENEFICIARIES OF SUCH PROVISIONS. IN THE EVENT OF ANY CONFLICT OR INCONSISTENCY BETWEEN THE PROVISIONS OF THE INTERCREDITOR AGREEMENT AND THIS GUARANTY, THE PROVISIONS OF THE INTERCREDITOR AGREEMENT SHALL CONTROL.

SECOND LIEN PARENT GUARANTY

This SECOND LIEN PARENT GUARANTY (this Guaranty ) is entered into as of October 9, 2008 by NextWave Wireless Inc., a Delaware corporation (the Guarantor ), in favor of and for the benefit of The Bank of New York Mellon, as Collateral Agent for and as representative of (in such capacity, together with its successors and assigns herein called Guarantied Party ) the holders of the Notes (as defined in the Purchase Agreement referred to below) (sometimes referred to as Holders or Beneficiaries ) issued pursuant to that certain Second Lien Subordinated Note Purchase Agreement dated as the date hereof (as it may be amended, supplemented or otherwise modified from time to time, the Purchase Agreement ; capitalized terms defined therein and not otherwise defined herein being used herein as therein defined) by and among NextWave Wireless LLC, a Delaware limited liability company ( Company ), Guarantor, the Subsidiaries of Company from time to time party thereto, the Purchasers named therein and the Guarantied Party, as Collateral Agent.

WHEREAS, Guarantor owns all of the issued and outstanding Capital Stock of Company;

WHEREAS, the Purchase Agreement requires that Companys obligations under the Note Documents be guarantied by Guarantor; and

WHEREAS, Guarantor is willing irrevocably and unconditionally to guaranty such obligations of Company.

NOW, THEREFORE, based upon the foregoing and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Guarantor hereby agrees as follows:

1.          Guaranty . Guarantor unconditionally guaranties, as primary obligor and not merely as surety, the due and punctual payment in full of all Guarantied Obligations (as hereinafter defined) when the same shall become due, whether at stated maturity, by acceleration, demand or otherwise (including amounts that would become due but for the operation of the automatic stay under Section 362(a) of the Bankruptcy Code). The term Guarantied Obligations is used herein in its most comprehensive sense and includes any and all obligations of Company in respect of notes, advances, borrowings, loans, debts, interest, fees, costs, expenses (including, without limitation, legal fees), indemnities and liabilities of whatsoever nature, now or hereafter made, incurred or created, whether absolute or contingent, liquidated or unliquidated, whether due or not due, and however arising under or in connection with the Purchase Agreement, the Notes and the other Note Documents.

Guarantor acknowledges that the Guarantied Obligations have been and are being incurred for, and will inure to, its benefit.

Any interest on any portion of the Guarantied Obligations that accrues after the commencement of any proceeding, voluntary or involuntary, involving the bankruptcy, insolvency, receivership, reorganization, liquidation or arrangement of Company (or, if interest on any portion of the Guarantied Obligations ceases to accrue by operation of law by reason of the commencement of said proceeding, such interest as would have accrued on such portion of the Guarantied Obligations if said proceeding had not been commenced) shall be included in the Guarantied Obligations because it is the intention of Guarantor and Guarantied Party that the Guarantied Obligations should be determined without regard to any rule of law or order that may relieve Company of any portion of such Guarantied Obligations.

In the event that all or any portion of the Guarantied Obligations is paid by Company, the obligations of Guarantor hereunder shall continue and remain in full force and effect or be reinstated, as the case may be, in the event that all or any part of such payment(s) is rescinded or recovered directly or indirectly from Guarantied Party or any other Beneficiary as a preference, fraudulent transfer or otherwise, and any such payments that are so rescinded or recovered shall constitute Guarantied Obligations.

Subject to the other provisions of this Section 1, upon the failure of Company to pay any of the Guarantied Obligations when and as the same shall become due, Guarantor will upon demand pay, or cause to be paid, in cash, to Guarantied Party for the ratable benefit of Beneficiaries, an amount equal to the aggregate of the unpaid Guarantied Obligations.

2.          Guaranty Absolute; Continuing Guaranty . The obligations of Guarantor hereunder are irrevocable, absolute, independent and unconditional and shall not be affected by any circumstance which constitutes a legal or equitable discharge of a guarantor or surety other than payment in full of the Guarantied Obligations. In furtherance of the foregoing and without

limiting the generality thereof, Guarantor agrees that: (a) this Guaranty is a guaranty of payment when due and not of collectibility; (b) Guarantied Party may enforce this Guaranty upon the occurrence and during the continuance of an Event of Default under the Purchase Agreement; (c) the obligations of Guarantor hereunder are independent of the obligations of Company under the Note Documents and the obligations of any other guarantor of obligations of Company and a separate action or actions may be brought and prosecuted against Guarantor whether or not any action is brought against Company or any of such other guarantors and whether or not Company is joined in any such action or action; and (d) a payment of a portion, but not all, of the Guarantied Obligations by one or more guarantors shall in no way limit, affect, modify or abridge the liability of such or any other guarantor for any portion of the Guarantied Obligations that has not been paid. This Guaranty is a continuing guaranty and shall be binding upon Guarantor and its successors and assigns, and Guarantor irrevocably waives any right (including, without limitation, any such right arising under New York Civil Code Section 2815) to revoke this Guaranty as to future transactions giving rise to any Guarantied Obligations.

3.          Actions by Beneficiaries . Any Beneficiary may from time to time, without notice or demand and without affecting the validity or enforceability of this Guaranty or giving rise to any limitation, impairment or discharge of Guarantors liability hereunder, (a) renew, extend, accelerate or otherwise change the time, place, manner or terms of payment of the Guarantied Obligations, (b) settle, compromise, release or discharge, or accept or refuse any offer of performance with respect to, or substitutions for, the Guarantied Obligations or any agreement relating thereto and/or subordinate the payment of the same to the payment of any other obligations, (c) request and accept other guaranties of the Guarantied Obligations and take and hold security for the payment of this Guaranty or the Guarantied Obligations, (d) release, exchange, compromise, subordinate or modify, with or without consideration, any security for payment of the Guarantied Obligations, any other guaranties of the Guarantied Obligations, or any other obligation of any Person with respect to the Guarantied Obligations, (e) enforce and apply any security now or hereafter held by or for the benefit of any Beneficiary in respect of this Guaranty or the Guarantied Obligations and direct the order or manner of sale thereof, or exercise any other right or remedy that Guarantied Party or the other Beneficiaries, or any of them, may have against any such security, consistent with the Purchase Agreement and the Note Documents, including and any applicable security agreement, including foreclosure on any such security pursuant to one or more judicial or nonjudicial sales, whether or not every aspect of any such sale is commercially reasonable, and (f) exercise any other rights available to Guarantied Party or the other Beneficiaries, or any of them, under the Note Documents.

4.          No Discharge . This Guaranty and the obligations of Guarantor hereunder shall be valid and enforceable and shall not be subject to any limitation, impairment or discharge for any reason (other than payment in full of the Guarantied Obligations), including without limitation the occurrence of any of the following, whether or not Guarantor shall have had notice or knowledge of any of them: (a) any failure to assert or enforce, or any agreement not to assert or enforce, or the stay or enjoining, by order of court, by operation of law or otherwise, of the exercise or enforcement of, any claim or demand or any right, power or remedy with respect to the Guarantied Obligations or any agreement relating thereto, or with respect to any other guaranty of or security for the payment of the Guarantied Obligations, (b) any waiver or modification of, or any consent to departure from, any of the terms or provisions of the Purchase Agreement, the Notes, any of the other Note Documents or any agreement or instrument

executed pursuant thereto, or of any other guaranty or security for the Guarantied Obligations, (c) any agreement relating to the Guarantied Obligations at any time being found to be illegal, invalid or unenforceable in any respect, (d) the application of payments received from any source to the payment of indebtedness other than the Guarantied Obligations, even though Guarantied Party or the other Beneficiaries, or any of them, might have elected to apply such payment to any part or all of the Guarantied Obligations, (e) any failure to perfect or continue perfection of a security interest in any collateral which secures any of the Guarantied Obligations, (f) any defenses, set-offs or counterclaims which Company may assert against Guarantied Party or any Beneficiary in respect of the Guarantied Obligations, including but not limited to failure of consideration, breach of warranty, payment, statute of frauds, statute of limitations, accord and satisfaction and usury, and (g) any other act or thing or omission, or delay to do any other act or thing, which may or might in any manner or to any extent vary the risk of Guarantor as an obligor in respect of the Guarantied Obligations.

5.          Waivers . Guarantor waives, for the benefit of Beneficiaries: (a) any right to require Guarantied Party or the other Beneficiaries, as a condition of payment or performance by Guarantor, to (i) proceed against Company, any other guarantor of the Guarantied Obligations or any other Person, (ii) proceed against or exhaust any security held from Company, any other guarantor of the Guarantied Obligations or any other Person, (iii) proceed against or have resort to any balance of any deposit account or credit on the books of any Beneficiary in favor of Company or any other Person, or (iv) pursue any other remedy in the power of any Beneficiary; (b) any defense arising by reason of the incapacity, lack of authority or any disability or other defense of Company including, without limitation, any defense based on or arising out of the lack of validity or the unenforceability of any agreement or instrument relating to the Guarantied Obligations or by reason of the cessation of the liability of Company from any cause other than payment in full of the Guarantied Obligations; (c) any defense based upon any statute or rule of law which provides that the obligation of a surety must be neither larger in amount nor in other respects more burdensome than that of the principal; (d) any defense based upon Guarantied Partys or any other Beneficiarys errors or omissions in the administration of the Guarantied Obligations, except behavior that amounts to bad faith; (e) (i) any principles or provisions of law, statutory or otherwise, that are or might be in conflict with the terms of this Guaranty and any legal or equitable discharge of Guarantors obligations hereunder, (ii) the benefit of any statute of limitations affecting Guarantors liability hereunder or the enforcement hereof, (iii) any rights to set-offs, recoupments and counterclaims, and (iv) promptness, diligence and any requirement that any Beneficiary protect, secure, perfect or insure any Lien or any property subject thereto; (f) notices, demands, presentments, protests, notices of protest, notices of dishonor and notices of any action or inaction, including acceptance of this Guaranty, notices of default under the Purchase Agreement, or any agreement or instrument related thereto, notices of any renewal, extension or modification of the Guarantied Obligations or any agreement related thereto, notices of any extension of credit to Company and notices of any of the matters referred to in Sections 3 and 4 and any right to consent to any thereof; and (g) to the fullest extent permitted by law, any defenses or benefits that may be derived from or afforded by law which limit the liability of or exonerate guarantors or sureties, or which may conflict with the terms of this Guaranty.

6.          Guarantors Rights of Subrogation, Contribution, Etc.; Subordination of Other Obligations . Until the Guarantied Obligations shall have been paid in full, Guarantor shall withhold exercise of (a) any claim, right or remedy, direct or indirect, that Guarantor now

has or may hereafter have against Company or any of its assets in connection with this Guaranty or the performance by Guarantor of its obligations hereunder, in each case whether such claim, right or remedy arises in equity, under contract, by statute, under common law or otherwise and including without limitation (i) any right of subrogation, reimbursement or indemnification that Guarantor now has or may hereafter have against Company, (ii) any right to enforce, or to participate in, any claim, right or remedy that any Beneficiary now has or may hereafter have against Company, and (iii) any benefit of, and any right to participate in, any collateral or security now or hereafter held by any Beneficiary and (b) any right of contribution Guarantor now has or may hereafter have against any other guarantor of any of the Guarantied Obligations. Guarantor further agrees that, to the extent the agreement to withhold the exercise of its rights of subrogation, reimbursement, indemnification and contribution as set forth herein is found by a court of competent jurisdiction to be void or voidable for any reason, any rights of subrogation, reimbursement or indemnification Guarantor may have against Company or against any collateral or security, and any rights of contribution Guarantor shall have against any other guarantor, shall be junior and subordinate to any rights Guarantied Party or the other Beneficiaries may have against Company, and to all right, title and interest Guarantied Party or the other Beneficiaries may have in any such collateral or security, and to any right Guarantied Party or the other Beneficiaries may have against such other guarantor.

Any indebtedness of Company now or hereafter held by Guarantor is subordinated in right of payment to the Guarantied Obligations, and any such indebtedness of Company to Guarantor collected or received by Guarantor after an Event of Default has occurred and is continuing, and any amount paid to Guarantor on account of any subrogation, reimbursement, indemnification or contribution rights referred to in the preceding paragraph when all Guarantied Obligations have not been paid in full, shall be held in trust for Guarantied Party on behalf of Beneficiaries and shall forthwith be paid over to Guarantied Party for the benefit of Beneficiaries to be credited and applied against the Guarantied Obligations.

7.          Expenses . Guarantor agrees to pay, or cause to be paid, on demand, and to save Guarantied Party and the other Beneficiaries harmless against liability for, (i) any and all costs and expenses (including fees, costs of settlement, and disbursements of counsel and allocated costs of internal counsel) incurred or expended by Guarantied Party or any other Beneficiary in connection with the enforcement of or preservation of any rights under this Guaranty and (ii) any and all costs and expenses (including those arising from rights of indemnification) required to be paid by Guarantor under the provisions of any other Note Document.

8.          Financial Condition of Company . No Beneficiary shall have any obligation, and Guarantor waives any duty on the part of any Beneficiary, to disclose or discuss with Guarantor its assessment, or Guarantors assessment, of the financial condition of Company or any matter or fact relating to the business, operations or condition of Company. Guarantor has adequate means to obtain information from Company on a continuing basis concerning the financial condition of Company and its ability to perform its obligations under the Note Documents, and Guarantor assumes the responsibility for being and keeping informed of the financial condition of Company and of all circumstances bearing upon the risk of nonpayment