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                                                                   EXHIBIT 10.39

VERITY

                                                                  VERITY BENELUX

                                 LOAN AGREEMENT

THE UNDERSIGNED:

Verity Benelux B.V., with offices in De Meern, The Netherlands, for these
purposes legally represented by its authorised signatory Mr E.M. Weenink, and
hereinafter referred to as "the Lender";

and

Mr Sluimer, residing in IJsselstein, province of Utrecht, The Netherlands,
hereinafter referred to as "the Borrower;

WHEREAS:

-     the Lender is willing to extend a loan, which the Borrower wishes to
      accept;

-     the parties wish to record the terms and conditions of the loan in a
      written contract;

HAVE AGREED AS FOLLOWS:

ARTICLE 1

The Lender hereby grants the Borrower a loan in the amount of NLG 7.875, which
loan the Borrower hereby accepts. The said amount shall be made available to the
Borrower on 14 July 2000 by payment of the tax due on option grant no. 4444,
comprising 1000 options at an exercise price of USD 28,25.

ARTICLE 2

1.    The loan shall carry interest at a rate of 0% per annum for the period
      commencing on 14 July 2000 and expiring on 1 August 2005.

2.    As for the period following expiry, the parties may, in mutual
      consultation, agree on a new rate of interest to apply to such a period as
      they shall determine. Should the parties not agree on a changed rate of
      interest, the aforesaid rate shall continue to apply.

3.    The rate referred to in Article 2.1 shall be adjusted to reflect market
      rates if the Borrower should not be able to sign Annex 2.

Loan Agreement HS                                                 Grant no. 4444
EW                                                                (signed)

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VERITY

                                                                  VERITY BENELUX

ARTICLE 3

The loan shall run until any of the following events occur:

1.    exercise of any of the underlying options no. 4444;

2.    termination of employment relationship with Verity Benelux;

3.    expiry of the options without their being actually exercised.

If an event as described in Article 3.2 or 3.3 should occur, Verity shall waive
the loan and assume liability for the ensuing tax consequences.

ARTICLE 4

The Lender shall not be entitled to alienate or encumber the claim arising from
the loan or transfer the claim by way of a security interest.

ARTICLE 5

1.    The loan agreement shall end by operation of law, and the amount owed by
      the Borrower at that time shall become immediately payable upon demand in
      the following cases:

      -     if the Borrower defaults on any obligation arising from this
            agreement;

      -     if the Borrower is adjudged bankrupt or the Borrower's assets are
            attached or an administrator is appointed to manage all or any part
            of the Borrower's assets.

2.    If the records of the tax authorities should bear out or -- in the event
      of a dispute - the highest tax court should consider that this agreement
      includes one or more taxable elements which the parties had no intention
      of including, this agreement shall be deemed to have been superseded from
      the very start by an agreement containing no such element(s).

ARTICLE 6

Payment of the sum of money owed under the loan agreement shall be applied,
first of all, against the costs, then against any interest due, and finally
against the principal and any current interest.

ARTICLE 7

The parties hereby exclude the possibility of this loan being set off against
any amount owed by the Lender to the Borrower.

Loan Agreement HS                                                 Grant no. 4444
EW                                                                (signed)

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VERITY

                                                                  VERITY BENELUX

ARTICLE 8

If any circumstances should occur which were apparently `unforeseeable', the
parties shall be under an obligation to discuss making an adjustment/change to
the loan agreement in such a way as to provide for the unforeseen circumstances.

ARTICLE 9

The parties hereby waive their right to dissolve this agreement, and to do so,
in particular, on the grounds of Article 265, Book 6 of the Dutch Civil Code.

ARTICLE 10

All costs associated with the conclusion of this loan agreement, and all
transactions or juristic acts connected with or arising from same, shall be
payable by the financier.

Thus agreed upon and signed in duplicate originals in De Meern, The Netherlands,
on 11 September 2000.

Lender                                      Borrower

/s/ Eric Weenink                            /s/ Hugo Sluimer

Loan Agreement HS                                                 Grant no. 4444
EW                                                                (signed)<PAGE>
                                                                   EXHIBIT 4.3.3

                      THIRD AMENDMENT TO RIGHTS AGREEMENT

               THIRD AMENDMENT, dated as of August 28, 2002 ("Third Amendment"),
to Rights Agreement dated as of September 14, 1998, as amended (the "Rights
Agreement"), between Leap Wireless International, Inc., a Delaware corporation
(the "Company"), and Harris Trust Company of California, now known as
Computershare Investor Services LLC (the "Rights Agent"). Capitalized terms used
but not otherwise defined herein shall have the meanings ascribed to them in the
Rights Agreement.

               WHEREAS, the Company and the Rights Agent previously entered into
the Rights Agreement; and

               WHEREAS, pursuant to Section 26 of the Rights Agreement, the
Company and the Rights Agent may from time to time supplement or amend any
provision of the Rights Agreement in accordance with the terms of such Section
26.

               NOW, THEREFORE, in consideration of the foregoing promises and
mutual agreements set forth in this Third Amendment, the parties hereby amend
the Rights Agreement as follows:

               1. Section 1.1 of the Rights Agreement is hereby amended and
restated in its entirety as follows:

        ""Acquiring Person" shall mean any Person (as such term is hereinafter
        defined) who or which, together with all Affiliates and Associates (as
        such terms are hereinafter defined) of such Person, shall be the
        Beneficial Owner (as such term is hereinafter defined) of 15% or more of
        the Common Shares of the Company then outstanding but shall not include
        (i) an Exempt Person or (ii) any Existing Holder, unless and until such
        time as such Existing Holder shall become the Beneficial Owner of one or
        more additional Common Shares of the Company (other than pursuant to a
        dividend or distribution paid or made by the Company on the outstanding
        Common Shares in Common Shares or pursuant to a split or subdivision of
        the outstanding Common Shares), unless, upon becoming the Beneficial
        Owner of such additional Common Shares, such Existing Holder is not then
        the Beneficial Owner of 15% or more of the Common Shares then
        outstanding. "Existing Holder" shall mean: (i) QUALCOMM Incorporated,
        together with all of its Affiliates and Associates (but excluding the
        beneficial ownership of individual officers, directors and employees of
        QUALCOMM Incorporated, solely by reason of such persons' status or
        authority as such), and, for purposes of this Rights Agreement, (x)
        prior to the consummation of the proposed "spin-off" distribution of
        Common Shares to the common stockholders of QUALCOMM Incorporated (the
        "Spin-Off"), QUALCOMM Incorporated may acquire one or more additional
        Common Shares without becoming an Acquiring Person hereunder, and (y)
        from and after the consummation of the Spin-Off, (1) QUALCOMM
        Incorporated may become the Beneficial Owner of up to 4,500,000 Common
        Shares (subject to adjustment), provided such beneficial

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        ownership of Common Shares is acquired solely upon the issuance by the
        Company to QUALCOMM Incorporated of that certain Warrant to purchase
        4,500,000 Common Shares (subject to adjustment) following the
        consummation of the Spin-Off or upon the exercise of such Warrant in
        accordance with its terms, and (2) QUALCOMM Incorporated may become the
        Beneficial Owner of up to 775,000 Common Shares (subject to adjustment),
        provided such beneficial ownership of Common Shares is acquired solely
        upon the issuance by the Company to QUALCOMM Incorporated of Warrants
        acquired through the purchase of those certain Units, each such Unit
        consisting of one note and one Warrant to purchase Common Shares, such
        Warrants in the aggregate entitling QUALCOMM Incorporated to purchase up
        to 775,000 Common Shares (subject to adjustment) or upon the exercise of
        such Warrants in accordance with their terms, without becoming an
        Acquiring Person hereunder; and (ii) MCG PCS, Inc., together with all of
        its Affiliates and Associates existing on August 29, 2002, but only to
        the extent of (x) the number of Common Shares (excluding the Common
        Shares referred to in clause (y) below) that MCG PCS, Inc., together
        with all of its Affiliates and Associates existing on August 29, 2002,
        beneficially own on August 29, 2002, plus (y) up to 21,548,415 Common
        Shares (subject to adjustment) of which MCG PCS, Inc., together with all
        of its Affiliates and Associates existing on August 29, 2002, acquires
        beneficial ownership solely through the issuance by the Company to MCG
        PCS, Inc. of Common Shares pursuant to that certain Interim, Partial
        Award, dated as of August 5, 2002, as issued by the American Arbitration
        Association Commercial Arbitration Tribunal and any subsequent awards,
        rulings or orders related to the dispute underlying such Interim,
        Partial Award. Notwithstanding the foregoing, no Person shall become an
        "Acquiring Person" as the result of an acquisition of Common Shares by
        the Company which, by reducing the number of shares outstanding,
        increases the proportionate number of shares beneficially owned by such
        Person to 15% or more of the Common Shares of the Company then
        outstanding; PROVIDED, HOWEVER, that if a Person shall become the
        Beneficial Owner of 15% or more of the Common Shares of the Company then
        outstanding solely by reason of share purchases by the Company and
        shall, after notice from or public disclosure by the Company of such
        share purchases by the Company, become the Beneficial Owner of one or
        more additional Common Shares of the Company, then such Person shall be
        deemed to be an "Acquiring Person." Notwithstanding the foregoing, if
        the Board of Directors of the Company determines in good faith that a
        Person who would otherwise be an "Acquiring Person," as defined pursuant
        to the foregoing provisions of this Section 1.1, has become such
        inadvertently (including, without limitation, because (A) such Person
        was unaware that it beneficially owned a percentage of Common Stock that
        would otherwise cause such Person to be an "Acquiring Person" or (B)
        such Person was aware of the extent of its Beneficial Ownership of
        Common Stock but had no actual knowledge of the consequences of such
        Beneficial Ownership under this Agreement), and without any intention of
        changing or influencing control of the Company, and such Person divests
        as promptly as practicable a sufficient number

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        of Common Shares so that such Person would no longer be an Acquiring
        Person, as defined pursuant to the foregoing provisions of this Section
        1.1, then such Person shall not be deemed to be or have become an
        "Acquiring Person" at any time for any purposes of this Agreement. For
        all purposes of this Agreement, any calculation of the number of Common
        Shares outstanding at any particular time, including for purposes of
        determining the particular percentage of such outstanding Common Shares
        of which any Person is the Beneficial Owner, shall be made in accordance
        with the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and
        Regulations under the Securities Exchange Act of 1934, as amended (the
        "Exchange Act"), as in effect on the date of this Agreement."

                            [SIGNATURE PAGE FOLLOWS]

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               IN WITNESS WHEREOF, the parties have executed this Third
Amendment as of the date first written above.

                                      LEAP WIRELESS INTERNATIONAL, INC.

                                      By:    /s/ JAMES E. HOFFMANN
                                        ----------------------------------------
                                      Name:  James E. Hoffmann
                                      Title: Senior Vice President, General
                                             Counsel and Secretary

                                      COMPUTERSHARE INVESTOR SERVICES LLC

                                      By:    /s/ JOHN A. CASTELLANOS
                                        ----------------------------------------
                                      Name:  John A. Castellanos
                                      Title: Relationship Manager

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