Document:

<PAGE>

                                                                   Exhibit 10.30

                                                                       EXHIBIT N

                                SWING LINE NOTE

$10,000,000.00                                                  Atlanta, Georgia
                                                                   June 21, 2001

       For value received, CADMUS COMMUNICATIONS CORPORATION, a Virginia
corporation (the "Borrower"), promises to pay to the order of WACHOVIA BANK,
N.A. (the "Bank"), for the account of its Lending Office, the principal sum of
Ten Million and No/100 Dollars ($10,000,000.00), or such lesser amount as shall
equal the unpaid principal amount of each Swing Line Loan made by the Bank to
the Borrower pursuant to the Credit Agreement referred to below, on the dates
and in the amounts provided in the Credit Agreement.  The Borrower promises to
pay interest on the unpaid principal amount of this Swing Line Note on the dates
and at the rate or rates provided for in the Credit Agreement.  Interest on any
overdue principal of and, to the extent permitted by law, overdue interest on
the principal amount hereof shall bear interest at the Default Rate, as provided
for in the Credit Agreement.  All such payments of principal and interest shall
be made in lawful money of the United States in federal or other immediately
available funds at the office of Wachovia Bank, N.A., 191 Peachtree Street,
N.E., Atlanta, Georgia  30303, or such other address as may be specified from
time to time pursuant to the Credit Agreement.

       All Swing Line Loans made by the Bank, the respective maturities thereof,
the interest rates from time to time applicable thereto and all repayments of
the principal thereof shall be recorded by the Bank and, prior to any transfer
hereof, endorsed by the Bank on the schedule attached hereto, or on a
continuation of such schedule attached to and made a part hereof; provided that
the failure of the Bank to make, or any error of the Bank in making, any such
recordation or endorsement shall not affect the obligation of the Borrower
hereunder or under the Credit Agreement.

       This Note is the Swing Line Note referred to in the Amended and Restated
Credit Agreement dated as of June 21, 2001 among the Borrower, the banks listed
on the signature pages thereof and their successors and assigns, Wachovia Bank,
N.A., as Agent, Bank of America, N.A., as Documentation Agent and First Union
National Bank, as Syndication Agent (as the same may be amended or modified from
time to time, the "Credit Agreement").  Terms defined in the Credit Agreement
are used herein with the same meanings.  Reference is made to the Credit
Agreement for provisions for the prepayment and the repayment hereof and the
acceleration of the maturity hereof.

       The Borrower hereby waives presentment, demand, protest, notice of
demand, protest and nonpayment and any other notice required by law relative
hereto, except to the extent as otherwise may be expressly provided for in the
Credit Agreement.
<PAGE>

       The Borrower agrees, in the event that this Note or any portion hereof is
collected by law or through an attorney at law, to pay all reasonable costs of
collection, including, without limitation, reasonable attorneys' fees.

       IN WITNESS WHEREOF, the Borrower has caused this Swing Line Note to be
duly executed under seal, by its duly authorized officer as of the day and year
first above written.

                             CADMUS COMMUNICATIONS CORPORATION

                             By:_________________________________________ (SEAL)
                                David E. Bosher, Senior Vice President and CFO

                                      N-2
<PAGE>

                         Swing Line Note (cont'd)
                   SWING LINE LOANS AND PAYMENTS OF PRINCIPAL
______________________________________________________________________________

<TABLE>
<CAPTION>
                                         Amount of
                Interest    Amount of    Principal     Maturity      Notation
     Date        Rate         Loan        Repaid         Date         Made By
  ----------   ---------   ----------  ------------  -----------     ---------
<S>             <C>        <C>          <C>           <C>            <C>

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</TABLE>

 -----------------

                                      N-3<PAGE>

                                                                    EXHIBIT 10.1

                      SECOND AMENDMENT TO SECOND AMENDED
                         AND RESTATED CREDIT AGREEMENT
                         -----------------------------

     This SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this
"Amendment"), dated as of July 3, 2001, is among CELLSTAR CORPORATION, a
 ---------
Delaware corporation (the "Borrower"), each of the banks or other lending
                           --------
institutions which is or may from time to time become a party to the Agreement
(hereinafter defined) (each a "Bank" and collectively, the "Banks"), BANK ONE,
                               ----                         -----
NA (formerly known as The First National Bank of Chicago), as syndication agent
(the "Syndication Agent"), NATIONAL CITY BANK, as documentation agent (the
      -----------------
"Documentation Agent"), THE CHASE MANHATTAN BANK (successor by merger to Chase
 -------------------
Bank of Texas, National Association, formerly known as Texas Commerce Bank
National Association), a New York banking corporation ("Chase"), as agent for
                                                        -----
itself and the other Banks and as issuer of Letters of Credit under the
Agreement (in such capacity, together with its successors in such capacity, the
"Agent").
 -----

                                   RECITALS:

     A.   The Borrower, the Banks, the Syndication Agent, the Documentation
Agent and the Agent have entered into that certain Second Amended and Restated
Credit Agreement dated as of February 27, 2001, as amended by that certain First
Amendment to Second Amended and Restated Credit Agreement and Post-Closing
Matters Agreement dated as of March 15, 2001 (the "Agreement").
                                                   ---------

     B.   The parties hereto now desire to amend the Agreement as provided
herein.

     NOW, THEREFORE, in consideration of the premises herein contained and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions
                                  -----------

     1.1  Definitions.  Capitalized terms used in this Amendment, to the extent
          -----------
not otherwise defined herein, shall have the same meanings as in the Agreement,
as amended hereby.

                                  ARTICLE II

                                  Amendments
                                  ----------

     2.1  Commitment Reduction.  Effective as of the date hereof, the Total
          --------------------
Commitment is reduced to $50,000,000 and the respective Commitment of each Bank
is reduced accordingly as reflected in Schedule 1.1 to the Agreement as amended
                                       ------------
hereby.  Accordingly, effective as of the date hereof, Schedule 1.1 to the
                                                       ------------
Agreement is hereby amended to read in its entirety as set forth in Annex 1
                                                                    -------
hereto.

     2.2  Amended Definitions.  Effective as of the date hereof, the following
          -------------------
definitions set forth in Section 1.1 of the Agreement are hereby amended to read
                         -----------
in their respective entireties as follows:

          Availability shall mean at any time (a) the lesser at such time of (i)
          ------------
     the Borrowing Base
<PAGE>

     and (ii) the Total Commitment (as such amount may be reduced in accordance
     with the provisions of this Agreement), less (b) the Availability Block,
                                             ----
     less (c) the sum of (i) the aggregate amount of each Bank's Current Sum
     ----
     at such time, (ii) the aggregate amount of accrued interest outstanding
     under the Advances at such time, (iii) the aggregate amount of all net
     liabilities of the Borrower or any of its Subsidiaries or Foreign
     Affiliates in respect of all Hedging Obligations of the Borrower or any of
     its Subsidiaries or Foreign Affiliates to Agent, Chase or any other Bank
     (which net liabilities shall be calculated on a basis satisfactory to the
     Agent and in accordance with accepted practice), provided that such other
     Bank notifies the Agent of the amount of such net liabilities in respect of
     its Hedging Obligations, (iv) all other outstanding Obligations, including
     without limitation Commitment Fees, fees related to any Letters of Credit,
     fees payable to the Agent under any fee letter, legal fees and other
     amounts payable under Section 10.10 hereof, and (v) Reserves; provided
                           -------------
     however that for purposes of Sections 6.3(f) and (i) hereof, Availability
                                  -----------------------
     shall be calculated based on the Borrowing Base without subtracting the
     Availability Block and regardless of the amount of the Total Commitment.

          Availability Block shall mean $10,000,000.
          ------------------

          Inventory Cap shall mean an amount equal to the lesser of (a) 80% of
          -------------
     the Net Amount of Eligible Receivables (except Topp Product Receivables),
     or (b) 50% of the Total Commitment.

     2.3  Commitments.  Effective as of the date hereof, clause (a) of Section
          -----------                                    ----------    -------
2.1 of the Agreement is hereby amended to read as follows:
---

     (a)(1) the lesser of (i) the applicable Borrowing Base at such time and
     (ii) the Total Commitment, less (2) the Availability Block.
                                ----

     2.4  Reductions of Commitments.  Subsection (b) of Section 2.4 of the
          -------------------------   --------------    -----------
Agreement is hereby amended to read in its entirety as follows:

          (b)  The Total Commitment shall automatically reduce by the amount of
     all proceeds of any and all dispositions of equipment or fixtures of the
     Borrower or any Domestic Subsidiary in accordance with Section 7.4(f)(5)
                                                            -----------------
     hereof, effective upon payment of such proceeds by the purchaser. Each such
     reduction shall occur ratably among the Banks in accordance with the amount
     of their respective Commitments and without further action or
     documentation. Simultaneously with each such reduction, the Borrower shall
     prepay Advances in the amount of such proceeds. Any prepayments required by
     this subsection (b) shall be applied to outstanding Alternate Base Rate
          --------------
     Borrowings up to the full amount thereof before such prepayments are
     applied to outstanding LIBOR Borrowings (together with any Consequential
     Loss resulting from such prepayments).

                                      -2-
<PAGE>

     2.5  Letters of Credit.  Effective as of the date hereof, the first
          -----------------
sentence of Section 2.10(a) of the Agreement is hereby amended to add the
            ---------------
following proviso to the end thereof, which proviso shall read as follows:

     ; provided further that on and after July 3, 2001, the Agent shall have no
       --------
     obligation to issue any Letter of Credit except to any beneficiary that is
     a supplier of the Borrower or its Subsidiaries to support credit sales from
     such beneficiary to Borrower or its Subsidiaries.

     2.6  Compliance Certificate.  Effective as of the date hereof, clause (l)
          ----------------------                                    ----------
of subsection (d) of Section 6.3 of the Agreement is hereby amended to read as
   --------------    -----------
follows:

     (1)  a Compliance Certificate, signed by a Responsible Officer of the
     Borrower, provided that for Borrower's fiscal quarter ending August 31,
               --------
     2001, such Compliance Certificate shall be furnished no later than forty
     (40) days after the end of such fiscal quarter, and

     2.7  Weekly Information.  Effective as of the date hereof, subsection (k)
          ------------------                                    --------------
of Section 6.3 of the Agreement is hereby amended to read as follows:
   -----------

     (k) as soon as available and in any event weekly, (i) the nine-week cash
     flow projection of the Borrower and its Subsidiaries, and (ii) a listing of
     the vendors with the 10 largest account balances due from the Borrower and
     its Subsidiaries, together with a summary of their terms of payment;

     2.8  Equipment Sales.  Effective as of the date hereof, clause (ii) of
          ---------------                                    -----------
Section 7.4(f)(5) of the Agreement is hereby amended to delete the parenthetical
-----------------
phrase appearing at the end thereof and to replace such parenthetical phrase
with the following phrase, which phrase shall read as follows:

     and the Total Commitment shall thereupon automatically reduce by the amount
     of such proceeds in accordance with Section 2.4(b) hereof.
                                         --------------

     2.9  Minimum Consolidated EBITDA.  The Banks and the Administrative Agent
          ---------------------------
hereby waive compliance with the covenant set forth in the first sentence of
Section 7.18 of the Agreement for the Borrower's fiscal quarter ending May 31,
2001 only.  The waiver granted herein is effective only to the extent
specifically stated herein and is limited as specified herein.  Except as
expressly stated herein, the waiver granted herein shall not be construed as a
consent to or waiver of any Default or Event of Default which may now exist or
hereafter occur or any violation of any term, covenant or provision of the
Agreement or any other Loan Document.  All rights and remedies of the Banks and
the Administrative Agent are hereby expressly reserved with respect to any such
other violation, Default or Event of Default.  The waiver granted herein does
not affect or diminish the right of the Administrative Agent and the Banks to
require strict performance by the Borrower and each Guarantor of each  provision
of any Loan Document to which it is a party, except as expressly provided
herein.

     2.10 Borrowing Base Certificate.  Effective as of the date hereof, Exhibit
          --------------------------                                    -------
"F" to the Agreement is hereby amended to read in its entirety as set forth on
---
Annex 2 hereto.
-------

                                      -3-
<PAGE>

                                 ARTICLE III

                             Conditions Precedent
                             --------------------

     3.1  Conditions.  The effectiveness of this Amendment is subject to the
     ---  ----------
satisfaction of the following conditions precedent:

          (a)  Amendment Fee. Borrower shall have paid to the Agent, for the
               -------------
     ratable benefit of the respective Banks that execute and deliver this
     Amendment, an amendment fee in the aggregate amount of $200,000.

          (b)  Representations and Warranties. The representations and
               ------------------------------
     warranties contained herein and in all other Loan Documents, as amended
     hereby, shall be true and correct as of the date hereof as if made on the
     date hereof.

          (c)  No Default.  No Default shall have occurred and be continuing.
               ----------

          (d)  Corporate Matters. All corporate proceedings taken in connection
               -----------------
     with the transactions contemplated by this Amendment and all documents,
     instruments, and other legal matters incident thereto shall be satisfactory
     to the Agent and its legal counsel, Locke Liddell & Sapp LLP.

          (e)  Fees and Expenses.  Borrower shall have paid all fees, costs and
               -----------------
     expenses referred to in Section 5.3 hereof for which invoices have been
                             -----------
     presented.

          (f)  Additional Documentation. The Agent shall have received such
               ------------------------
     additional approvals, opinions, or documents as the Agent or its legal
     counsel, Locke Liddell & Sapp LLP, may reasonably request.

                                  ARTICLE IV

                 Ratifications, Representations and Warranties
                 ---------------------------------------------

     4.1  Ratifications.  The terms and provisions set forth in this Amendment
          -------------
shall modify and supersede all inconsistent terms and provisions set forth in
the Agreement and except as expressly modified and superseded by this Amendment,
the terms and provisions of the Agreement and the other Loan Documents are
ratified and confirmed and shall continue in full force and effect.  Borrower
agrees that the Agreement, as amended hereby, and the other Loan Documents shall
continue to be legal, valid, binding and enforceable in accordance with their
respective terms.

     4.2  Representations and Warranties.  Borrower hereby represents and
          ------------------------------
warrants to the Agent and the Banks that (1) the execution, delivery, and
performance by the Borrower and the Guarantors of this Amendment and compliance
with the terms and provisions hereof have been duly authorized by all requisite
action on the part of each such Person and do not and will not (a) violate or
conflict with, or result in a breach of, or require any consent under (i) the
articles of incorporation, certificate of incorporation, bylaws, partnership
agreement or other organizational documents of any such Person, (ii) any
applicable law, rule, or regulation or any order, writ, injunction, or decree of
any Governmental Authority or arbitrator, or (iii) any material agreement or
instrument to which any such Person is a party or by which any of them or any of
their property is bound or subject, (2) the representations and warranties
contained in the Agreement, as amended hereby, and any other Loan Document are
true and

                                      -4-
<PAGE>

correct on and as of the date hereof as though made on and as of the date
hereof, and (3) no Default has occurred and is continuing.

                                   ARTICLE V

                                 Miscellaneous
                                 -------------

     5.1  Survival of Representations and Warranties.  All representations and
          ------------------------------------------
warranties made in this Amendment or any other Loan Document shall survive the
execution and delivery of this Amendment, and no investigation by the Agent or
any Bank or any closing shall affect the representations and warranties or the
right of the Agent or any Bank to rely upon them.

     5.2  Reference to Agreement.  Each of the Loan Documents, including the
          ----------------------
Agreement 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 Agreement as amended hereby, are hereby amended so that any
reference in such Loan Documents to the Agreement shall mean a reference to the
Agreement as amended hereby.

     5.3  Expenses of the Agent and Banks.  Borrower agrees to pay on demand all
          -------------------------------
costs and expenses incurred by the Agent and the Banks, or any of them, in
connection with the preparation, negotiation, and execution of this Amendment
and any and all amendments, modifications, and supplements thereto, including
without limitation the costs and fees of the Agent's legal counsel and of the
respective Banks' legal counsel, and all costs and expenses incurred by the
Agent and the Banks, or any of them, in connection with the enforcement or
preservation of any rights under the Agreement, as amended hereby, or any other
Loan Document, including without limitation the costs and fees of the Agent's
legal counsel and of the respective Banks' legal counsel.

     5.4  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.

     5.5  APPLICABLE LAW.  NOTWITHSTANDING ANYTHING TO THE CONTRARY CONTAINED IN
          --------------
THE OTHER LOAN DOCUMENTS, THIS AMENDMENT AND ALL OTHER LOAN DOCUMENTS SHALL BE
DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN DALLAS, DALLAS COUNTY, TEXAS
AND SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE
OF TEXAS.

     5.6  Successors and Assigns.  This Amendment is binding upon and shall
          ----------------------
inure to the benefit of the Borrower, the Banks, the Syndication Agent, the
Documentation Agent and the Agent and their respective successors and assigns,
except the Borrower shall not assign or transfer any of its rights or
obligations hereunder without the prior written consent of the Agent.

     5.7  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.  This Amendment shall not be effective unless and until the Agent,
the requisite Banks, the Borrower and the Guarantors have each executed and
delivered a counterpart hereof; provided, however that execution and delivery by
Holdings shall not be required for effectiveness of this Amendment, but Holdings
shall execute and deliver this Amendment no later than July 31, 2001, and
failure to do so by such date shall constitute an Event of Default under the
Agreement.

                                      -5-
<PAGE>

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

     5.9  Release of Claims.  The Borrower and the Guarantors each hereby
          -----------------
acknowledge and agree that none of them has any and there are no defenses,
counterclaims, offsets, cross-complaints, claims or demands of any kind or
nature whatsoever to or against the Agent, the Syndication Agent, the
Documentation Agent, any of the Banks or the terms and provisions of or the
obligations of the Borrower, any Guarantor or any Subsidiary created or
evidenced by the Agreement or any of the other Loan Documents, and that neither
the Borrower nor any of the Guarantors has any right to seek affirmative relief
or damages of any kind or nature from the Agent, the Syndication Agent, the
Documentation Agent or any of the Banks.  To the extent any such defenses,
counterclaims, offsets, cross-complaints, claims, demands or rights exist,
Borrower and the Guarantors each hereby waives, and hereby knowingly and
voluntarily releases and forever discharges the Agent, the Syndication Agent,
the Documentation Agent, each of the Banks and their respective predecessors,
officers, directors, agents, attorneys, employees, successors and assigns, from
all possible claims, demands, actions, causes of action, defenses,
counterclaims, offsets, cross-complaints, damages, costs, expenses and
liabilities whatsoever, whether known or unknown, such waiver and release being
with full knowledge and understanding of the circumstances and effects of such
waiver and release and after having consulted legal counsel with respect
thereto.

     5.10 ENTIRE AGREEMENT.  THIS AMENDMENT AND ALL OTHER INSTRUMENTS, DOCUMENTS
          ----------------
AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT EMBODY
THE FINAL, ENTIRE AGREEMENT AMONG THE PARTIES HERETO REGARDING THIS AMENDMENT
AND SUPERSEDE ANY AND ALL PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND
UNDERSTANDINGS, WHETHER WRITTEN OR ORAL, RELATING TO THIS AMENDMENT, AND MAY NOT
BE CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT
ORAL AGREEMENTS OR DISCUSSIONS OF THE PARTIES HERETO.  THERE ARE NO ORAL
AGREEMENTS AMONG THE PARTIES HERETO.

                    [Remainder of Page Intentionally Blank]

                                      -6-
<PAGE>

     Executed as of the date first written above.

                                        BORROWER:
                                        --------

                                        CELLSTAR CORPORATION

                                        By:  /s/ AUSTIN P. YOUNG
                                           -------------------------------------
                                           Name:  Austin P. Young
                                                --------------------------------
                                           Title:  SR. VP and CFO
                                                 -------------------------------

                                        AGENTS AND BANKS:
                                        ----------------

                                        THE CHASE MANHATTAN BANK (successor by
                                        merger to Chase Bank of Texas, National
                                        Association, formerly known as Texas
                                        Commerce Bank National Association), as
                                        Agent and as a Bank

                                        By:  /s/ R. Alan Green
                                           -------------------------------------
                                           R. Alan Green
                                           Vice President

                                        BANK ONE, NA (formerly known as The
                                        First National Bank of Chicago), as
                                        Syndication Agent and as a Bank

                                        By: /s/ William V. Clifford
                                           -------------------------------------
                                           William V. Clifford
                                           First Vice President

                                        NATIONAL CITY BANK,
                                        as Documentation Agent and as a Bank

                                        By: /s/ Tom Gurbach
                                           -------------------------------------
                                           Tom Gurbach
                                           Vice President

                                      -7-
<PAGE>

                                        CREDIT LYONNAIS NEW YORK BRANCH

                                        By: /s/ Anne G. Shean
                                           -------------------------------------
                                           Anne G. Shean
                                           Vice President

                                        WELLS FARGO BANK TEXAS,
                                        NATIONAL ASSOCIATION (formerly known as
                                        Wells Fargo Bank (Texas), National
                                        Association)

                                        By: /s/ Michael B. Sullivan
                                           -------------------------------------
                                           Michael B. Sullivan
                                           Senior Vice President

Each of the undersigned Guarantors hereby (a) consents and agrees to this
Amendment, and (b) agrees that its Guaranty shall continue to be the legal,
valid and binding obligation of such Guarantor enforceable against such
Guarantor in accordance with its terms.

                                        NATIONAL AUTO CENTER, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR, LTD.

                                        By:  National Auto Center, Inc.,
                                             General Partner

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                      -8-
<PAGE>

                                        CELLSTAR FULFILLMENT, LTD.

                                        By:  CellStar Fulfillment, Inc.,
                                             General Partner

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR FINANCO, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR FULFILLMENT, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        NAC HOLDINGS, INC.

                                        By: /s/ Elaine Flud Rodriguez
                                           -------------------------------------
                                           Elaine Flud Rodriguez
                                           President

                                      -9-
<PAGE>

                                        CELLSTAR INTERNATIONAL
                                        CORPORATION/ASIA

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        AUDIOMEX EXPORT CORP.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR INTERNATIONAL
                                        CORPORATION/SA

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR AIR SERVICES, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        A & S AIR SERVICE, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                     -10-
<PAGE>

                                        CELLSTAR TELECOM, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        FLORIDA PROPERTIES, INC.

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                        CELLSTAR GLOBAL SATELLITE
                                        SERVICE, LTD.

                                        By:  National Auto Center, Inc.,
                                             General Partner

                                        By: /s/ Austin P. Young
                                           -------------------------------------
                                           Name: Austin P. Young
                                                --------------------------------
                                           Title: Sr. VP and CFO
                                                 -------------------------------

                                     -11-
<PAGE>

                                    ANNEX 1

                                  Commitments
                                  -----------
<PAGE>

                                 SCHEDULE 1.1
                                 ------------

                              Banks' Commitments
                              ------------------

           Lender                                  Commitment Amount
           ------                                  -----------------

1.   The Chase Manhattan Bank                      $10,869,565.22

2.   Bank One, NA                                  $10,869,565.22

3.   National City Bank                            $10,869.565.22

4.   Credit Lyonnais New York Branch               $8,695,652.17

5.   Wells Fargo Bank Texas, National Association  $8,695,652.17

                         Total Commitment          $50,000,000
<PAGE>

                                    ANNEX 2

                          Borrowing Base Certificate
                          --------------------------
<PAGE>

                                   EXHIBIT F
                                      TO
                          SECOND AMENDED AND RESTATED
                               CREDIT AGREEMENT

                          Borrowing Base Certificate
                          --------------------------
<PAGE>

                          BORROWING BASE CERTIFICATE

TO:  The Chase Manhattan Bank, as Agent
     Asset Based Operations
     395 North Service Road, 3/rd/ Floor
     Melville, New York
     Attention:  Debbie Tomasino

Ladies and Gentlemen:

  This Borrowing Base Certificate for the month ending ___________, 200__, is
executed and delivered by CELLSTAR CORPORATION, a Delaware corporation (the
"Borrower"), pursuant to that certain Second Amended and Restated Credit
 --------
Agreement dated as of February 27, 2001 (as the same has been and may be
amended, supplemented, modified or restated from time to time, the "Credit
                                                                    ------
Agreement"), among the Borrower, each of the banks or other lending institutions
---------
which is or may from time to time become a signatory thereto and any successors
or permitted assigns thereof (each a "Bank" and, collectively, the "Banks"),
                                      ----                          -----
Bank One, NA (formerly known as The First National Bank of Chicago), as
syndication agent (the "Syndication Agent"), National City Bank, as
                        -----------------
documentation agent ("Documentation Agent"), and The Chase Manhattan Bank
                      -------------------
(successor by merger to Chase Bank of Texas, National Association), a New York
banking corporation, as agent for the Lenders (in such capacity, together with
its successors in such capacity, the "Agent"). All terms used herein shall have
                                      -----
the meanings assigned to them in the Credit Agreement.

  The Borrower represents and warrants to the Agent and each Bank that all
information contained herein is true, correct, and complete, and that the total
Eligible Accounts and Eligible Inventory referred to below represent the
Eligible Accounts and Eligible Inventory that qualify for purposes of
determining the Borrowing Base under the Credit Agreement.

<TABLE>
<S>                                                                                                           <C>
ACCOUNTS RECEIVABLE:
1.        Gross Receivables of the Companies (ending balance for period
     ended ______________, 200__)...........................................................................  $____________
2.        Less:  Ineligible Receivables (determined pursuant to the definition of Eligible
     Receivables in the Credit Agreement, without duplication):
          (a)       Receivables not complying with Legal Requirements.......................................  $____________
          (b)       Receivables outstanding for more than 90 days past the original date of invoice
               or past due for more than 60 days............................................................  $____________
          (c)       Receivables created outside of the ordinary course of business..........................  $____________
          (d)       Receivables not billed or invoiced timely or in the normal course of business...........  $____________
          (e)       Receivables from unenforceable contracts or contracts not fully completed by
               any Company..................................................................................  $____________
          (f)       Receivables including progress billings.................................................  $____________
          (g)       Receivables from sales on bill-and-hold guaranteed sale,
               sale-and-return, etc. (except Topp Product Receivables)......................................  $____________
          (h)       Topp Product Receivables................................................................  $____________
          (i)       Receivables subject to a lien other than liens held by the Agent........................  $____________
          (j)       Receivables as to which any Company does not have good and indefeasible title...........  $____________
          (k)       Receivables subject to anti-assignment provisions.......................................  $____________
          (l)       Receivables subject to setoff, dispute, etc.............................................  $____________
          (m)       Receivables owed by account debtors subject to bankruptcy,
               or whose credit standing is unsatisfactory to the Agent......................................  $____________
          (n)       Receivables charged or written off as uncollectible in accordance with GAAP.............  $____________
          (o)       Receivables evidenced by chattel paper or instruments or that are otherwise
               not "accounts" within the meaning of the Uniform Commercial Code.............................  $____________
          (p)       Receivables for goods objected to or not finally accepted, or Receivables
               subject to default by any party thereto......................................................  $____________
          (q)       Receivables owed by Foreign Subsidiaries................................................  $____________
          (r)       Receivables owed by Foreign Affiliates..................................................  $____________
          (s)       Receivables owed by other Affiliates of any Company.....................................  $____________
          (t)       Receivables owed by employees of any Company............................................  $____________
          (u)       Receivables owed by other foreign account debtors.......................................  $____________
          (v)       Receivables not payable in U.S. Dollars.................................................  $____________
          (w)       Receivables owed by each account debtor with over 50% of the balances owed by such
               account debtor and its Affiliates to the Companies on a consolidated basis outstanding
</TABLE>

BORROWING BASE CERTIFICATE - Page 1
<PAGE>

<TABLE>
<S>                                                                                                           <C>
               for more than 90 days past the original date of invoice or
               more than 60 days past due...................................................................  $____________
          (x)       For Receivables owed by each account debtor whose balances owed by such
               account debtor and its Affiliates exceed the Maximum Concentration Percentage/1/
               of the aggregate of all Receivables owing to the Companies, or any of them, by all
               account debtors, the amount of such Receivables that do not exceed
               the Maximum Concentration Percentage.........................................................  $____________
          (y)       Receivables owed by any Governmental Authority for which the Federal Assignment of
               Claims Act of 1940, as amended, or similar state statutes, have not been complied with.......  $____________
          (z)       Contra accounts owed by any Company to the account debtor...............................  $____________
          (aa)      Credits.................................................................................  $____________
          (bb)      Cash/COD Receivables....................................................................  $____________
          (cc)      Sample sales............................................................................  $____________
          (dd)      Lockton Receivables.....................................................................  $____________
          (ee)      Other ineligible Receivables............................................................  $____________
3.        Total Ineligible Receivables (sum of Lines 2(a)-(ee)).............................................  $____________
4.        Total Eligible Receivables (Line 1 minus Line 3)..................................................  $____________
5.        Less:  The following amounts determined pursuant to the definition of
     Net Amount of Eligible Receivables in the Credit Agreement, without duplication:
          (a)       Unpaid sales, excise or similar taxes...................................................  $____________
          (b)       Returns, discounts, claims, credits and allowances......................................  $____________
          (c)       Unpaid service charges owed by the Borrower or any of the Domestic Subsidiaries.........  $____________
6.        Net Amount of Eligible Receivables (Line 4 minus Line 5)..........................................  $____________

INVENTORY:
7.        Total Inventory of the Companies (calculated at the lower of (a) actual cost for the
     purchase of such inventory from the original wholesale supplier or (b) fair market value)..............  $____________
8.        Less:  Ineligible Inventory (determined pursuant to the definition of Eligible Inventory in
     the Credit Agreement, without duplication)
          (a)       Work-in-process inventory...............................................................  $____________
          (b)       Damaged inventory.......................................................................  $____________
          (c)       Returned products.......................................................................  $____________
          (d)       Packaging or shipping supplies or materials.............................................  $____________
          (e)       Obsolete and slow moving inventory (Line (iii) below))..................................  $____________
              (i)   value of inventory which has not been sold within 120 days after purchase
                    of such inventory by the Companies, or any of them......................................  $____________
              (ii)  obsolescence reserve....................................................................  $____________
              (iii) greater of Line (i) or Line (ii)........................................................  $____________
          (f)       Inventory shipped or delivered on consignment, sale or return, or similar terms.........  $____________
          (g)       Inventory in transit....................................................................  $____________
          (h)       Inventory which is offsite, except offsite inventory covered by a waiver or
              subordination satisfactory to Agent...........................................................  $____________
          (i)       Service or repair parts or equipment  $____________
          (j)       Inventory located at location for which landlord's waiver or subordination
              not received, unless appropriate Reserves are reflected below.................................  $____________
          (k)       Inventory subject to dispute as to any Company's title or right to possession...........  $____________
          (l)       Inventory located outside of the United States of America...............................  $____________
          (m)       Inventory not in good condition or that does not comply with any applicable law or
              any applicable standard imposed by any Governmental Authority.................................  $____________
          (n)       Inventory not adequately insured........................................................  $____________
          (o)       Inventory determined to be ineligible by the Agent......................................  $____________
          (p)       Inventory subject to a lien other than liens held by the Agent..........................  $____________
9.        Total Ineligible Inventory (sum of Lines 8(a)-(p))................................................  $____________
10.       Total Eligible Inventory (Line 7 minus Line 9)....................................................  $____________
11.       Amount of Eligible Inventory that is Eligible Digital Handset Inventory...........................  $____________

--------------------
/1/ 10% for all account debtors except Lockton; 20% for Lockton when and if the Banks decide, in the exercise of
their sole discretion, to permit Lockton Receivables to be included in Eligible Receivables.
</TABLE>

BORROWING BASE CERTIFICATE - Page 2
<PAGE>

<TABLE>
<S>                                                                                                           <C>
12.       Amount of Eligible Inventory that is Eligible Analog Handset Inventory............................  $____________
13.       Amount of Eligible Inventory that is Eligible Accessories Inventory...............................  $____________

BORROWING BASE:
14.       80% of Line 6.....................................................................................  $____________
15.       50% of Line 11....................................................................................  $____________
16.       40% of Line 12....................................................................................  $____________
17.       15% of Line 13....................................................................................  $____________
18.       Total Commitment..................................................................................  $____________
19.       50% of Line 18....................................................................................  $____________
20.       Lesser of Line 14 or Line 19......................................................................  $____________
21.       Sum of Line 15 plus Line 16 plus Line 17..........................................................  $____________
22.       Lesser of Line 20 or Line 21
23.       Borrowing Base:  Line 14 plus Line 22.............................................................  $____________

AVAILABILITY:
24.       Lesser of Line 18 or Line 23......................................................................  $____________
25.       Availability Block................................................................................  $10,000,000
26.       Line 24, minus Line 25............................................................................  $____________
27.       Outstanding principal amount of Loans.............................................................  $____________
28.       Letter of Credit Exposure Amount (limited to $10,000,000).........................................  $____________
29.       Sum of Line 27 plus Line 28.......................................................................  $____________
30.       Amount of accrued interest on Loans...............................................................  $____________
31.       Amount of net liabilities for relevant Hedging Obligations........................................  $____________
32.       Fees and other Obligations........................................................................  $____________
33.       Reserves/2/.......................................................................................  $____________
34.       Sum of Lines 29 through 33........................................................................  $____________
35.       Available credit amount or amount to be paid if negative (Line 26 minus Line 34)..................  $____________
</TABLE>

Date:                                   CELLSTAR CORPORATION
     ---------------------

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

--------------------
/2/   Determined by the Agent in its sole discretion.

BORROWING BASE CERTIFICATE - Page 3

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