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                                                                    Exhibit 10.1


                               AMENDMENT NO. 1 TO
                  AMENDED AND RESTATED REVOLVING LOAN AGREEMENT

            THIS AMENDMENT NO. 1 TO AMENDED AND RESTATED REVOLVING LOAN
AGREEMENT (this "Amendment"), dated as of March 26, 2003, is entered into by and
among the financial institutions listed on the signature pages hereof
(individually, a "Lender" and collectively, the "Lenders"), Union Bank of
California, N.A., as Administrative Agent (in such capacity, the "Administrative
Agent"), Comerica Bank-California, as Collateral Agent, and ViaSat, Inc., a
Delaware corporation (the "Borrower"), with reference to the following facts:

                                    RECITALS

            A. The Borrower, the Lenders, the Administrative Agent and the
Collateral Agent are parties to the Amended and Restated Revolving Loan
Agreement, dated as of December 31, 2002 (the "Loan Agreement"), pursuant to
which the Lenders have provided the Borrower with a Revolving Loan facility and
a subfacility for Letters of Credit.

            B. The parties wish to amend the Loan Agreement to increase the
amount of the subfacility for Letters of Credit from "$4,000,000" to
"$7,000,000".

            NOW, THEREFORE, the parties hereby agree as follows:

        1. Defined Terms. Any and all initially capitalized terms used in this
Amendment (including, without limitation, in the recitals hereto) without
definition shall have the respective meanings specified in the Loan Agreement.

        2. Increase in Subfacility for Letters of Credit. Section 2.4(a) of the
Loan Agreement is hereby amended by deleting the reference therein to $4,000,000
and by substituting therefor a reference to $7,000,000.

        3. Condition Precedent. The effectiveness of this Amendment shall be
subject to the condition that the Administrative Agent shall have received an
original of this Amendment, duly executed by the Borrower, the Collateral Agent
and each of the Lenders

        4. Miscellaneous.


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            (a)  Survival of Representations and Warranties. All representations
                 and warranties made in the Loan Agreement or in any other
                 document or documents relating thereto, including, without
                 limitation, any Loan Document furnished in connection with this
                 Amendment, shall survive the execution and delivery of this
                 Amendment and the other Loan Documents, and no investigation by
                 the Administrative Agent or the Lenders or any closing shall
                 affect the representations and warranties or the right of the
                 Administrative Agent or any Lender to rely thereon.

            (b)  No Events of Default. The Borrower is not aware of any events
                 which now constitute, or with the passage of time or the giving
                 of notice, or both, would constitute, an Event of Default under
                 the Loan Agreement.

            (c)  Reference to Loan Agreement. The Loan Agreement, each of the
                 other Loan Documents, and any and all other agreements,
                 documents or instruments now or hereafter executed and
                 delivered pursuant to the terms hereof, or pursuant to the
                 terms of the Loan Agreement as amended hereby, are hereby
                 amended so that any reference therein to the Loan Agreement
                 shall mean a reference to the Loan Agreement as amended hereby.

            (d)  Loan Agreement Remains in Effect. The Loan Agreement and the
                 other Loan Documents remain in full force and effect and the
                 Borrower ratifies and confirms its agreements and covenants
                 contained therein. The Borrower hereby confirms that, after
                 giving effect to this Amendment, no Event of Default or Default
                 exists as of such date.

            (e)  Severability. Any provision of this Amendment held by a court
                 of competent jurisdiction to be invalid or unenforceable shall
                 not impair or invalidate the remainder of this Amendment and
                 the effect thereof shall be confined to the provision so held
                 to be invalid or unenforceable.

            (f)  APPLICABLE LAW. THIS AMENDMENT AND ALL OTHER LOAN DOCUMENTS
                 EXECUTED PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND
                 TO BE PERFORMABLE IN THE STATE OF CALIFORNIA AND SHALL BE
                 GOVERNED BY


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                 AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
                 CALIFORNIA.

            (g)  Successors and Assigns. This Amendment is binding upon and
                 shall inure to the benefit of the Lenders and the Borrower and
                 their respective successors and assigns; provided, however,
                 that the Borrower may not assign or transfer any of its rights
                 or obligations hereunder without the prior written consent of
                 the Lenders.

            (h)  Counterparts. This Amendment may be executed in one or more
                 counterparts, each of which when so executed shall be deemed to
                 be an original, but all of which when taken together shall
                 constitute one and the same instrument.

            (i)  Headings. The headings, captions and arrangements used in this
                 Amendment are for convenience only and shall not affect the
                 interpretation of this Amendment.

            (j)  NO ORAL AGREEMENTS. THIS AMENDMENT, TOGETHER WITH THE OTHER
                 LOAN DOCUMENTS AS WRITTEN, REPRESENTS THE FINAL AGREEMENT
                 BETWEEN THE LENDERS AND THE BORROWER AND MAY NOT BE
                 CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR
                 SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO
                 UNWRITTEN ORAL AGREEMENTS BETWEEN THE LENDERS AND THE BORROWER.


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            IN WITNESS WHEREOF, the parties have entered into this Amendment
by their respective duly authorized officers as of the date first above written.

                                  VIASAT, INC.

                                  By:
                                     ---------------------------------
                                         Ronald G. Wangerin
                                         Vice President and Chief
                                         Financial Officer

                                  UNION BANK OF CALIFORNIA, N.A., as the
                                  Administrative Agent

                                  By:
                                     ---------------------------------
                                         Douglas S. Lambell
                                         Vice President

                                  COMERICA BANK-CALIFORNIA,
                                  as the Collateral Agent

                                  By:
                                     ---------------------------------
                                         Stephen M. Cusato
                                         Senior Vice President

                                  UNION BANK OF CALIFORNIA, N.A., as a Lender


                                  By:
                                     ---------------------------------
                                         Douglas S. Lambell
                                         Vice President

                                  COMERICA BANK - CALIFORNIA,
                                  as a Lender

                                  By:
                                     ---------------------------------
                                         Stephen M. Cusato
                                         Senior Vice President

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