Document:

<PAGE>

                                                                   EXHIBIT 10.13

                                                                         ANNEX A

                  [Two originals to be provided to Ex-Im Bank]

To:  Export-Import Bank of the United States
     811 Vermont Avenue, N.W.
     Washington, D.C. 20571
     Attention:  Vice President - Business Credit Division

                            LOAN AUTHORIZATION NOTICE

     We hereby notify the Export-Import Bank of the United States ("Ex-Im Bank")
that, pursuant to the delegated authority granted by Ex-Im Bank to the
undersigned institution (the "Lender") under the Delegated Authority Letter
Agreement referred to below between Lender and Ex-Im Bank, we have issued an
Ex-Im Bank Guarantee under the Master Guarantee Agreement between Ex-Im Bank and
Lender, of the Loan Facility identified below from Lender to Borrower identified
below. The Loan Facility is subject to the specific terms and conditions set
forth below. Unless otherwise defined, the capitalized terms used herein shall
have the meanings set forth in the Master Guarantee Agreement.

1.   Documentation and Location of Loan Documents:

     Name of Lender: Bank One, NA with its main office in Chicago, Illinois

     Delegated Authority Letter Agreement Number: TX-DA-99-010

     Master Guarantee Agreement Number: TX-MGA-99-010

     Borrower Agreement Date: September 30, 2002

     Effective Date of this Loan Facility: September 30, 2002

     Location of Loan Documents:    1700 Pacific Avenue, 21st Floor
                                    Dallas, TX 75201

     If Borrower was assisted by a city/state export agency, please provide the
     name of the agency, contact person, and telephone number.

                                    Name:     N/A
                                              ----------------------------
                                    Address:
                                              ----------------------------

                                        1

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2.   A.   Borrower's Name and Address: The full name, address, contact person,
     telephone and telefax numbers of Borrower are as follows:

                       Name:        AMX CORPORATION, a Texas Corporation,
                                    formerly known as PANJA INC.
                       Address:     3000 Research Dr.
                                    Richardson, TX  75082
                                    Attention:  Jean Nelson, VP & CFO
                       Telephone:   469-624-6528
                       Telecopier:  469-624-7156

     B.   Is Borrower a Small Business as stipulated by SBA guidelines?
          [X] Yes [ ] No

     C.   Additionality: Please select appropriate answer(s).

          [ ]  (1.)  Borrower meets all small business criteria:
                     (i)     Maximum Amount is $2 million or less;
                     (ii)    Borrower qualifies as Small Business under SBA
                             Guidelines;
                     (iii)   Borrower employs 100 people or fewer; and
                     (iv)    Borrower's annual revenues do not exceed $10
                             million.

          [X]  (2.)  Repayment risk associated with foreign sale.

          [X]  (3.)  Borrower's creditworthiness requires Guarantee.

          [ ]  (4.)  Lender's internal lending limits reached.

          [ ]  (5.)  Lender's statutory lending limits reached.

          [ ]  (6.)  Other (please specify) ___________________________________.

3.   Guarantor's Name and Address: Are there Guarantors for the Loan Facility?

     [ ]  Yes

     [X]  No   If no, attach waiver letter from Ex-Im Bank and/or ownership
          breakdown.

     (See Joint Application for Working Capital Guarantee for details)
     The full name, address, telephone and telefax numbers of each Guarantor are
     as follows:

                       Name:          N/A
                                    -----------------------
                       Address:
                                    -----------------------

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

                                        2

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                                    -----------------------
                       Attention:
                                    -----------------------
                       Telephone:
                                    -----------------------
                       Telecopier:
                                    -----------------------

4.   The Items to be financed:

     A.   The Items: (Complete description of goods and services to be exported,
          e.g. machine tools, electronic components, logs, etc.)

          Remote control systems

          SIC Code(s)/NAIC No(s). 3669/3670 334290

     B.   Are Commercial Letters of Credit or Standby Letters of Credit (other
          than Warranty Letters of Credit) to be issued under this Loan
          Facility?

          [ ]  Yes If yes, approximately what percentage of the Loan Facility
               will be utilized for Commercial Letters of Credit or Standby
               Letters of Credit? ____%

          [X]  No

     C.   Are Warranty Letters of Credit expected to be issued under this Loan
          Facility?

          [ ]  Yes If yes, Ex-Im Bank's prior written consent must be given for
               each such Warranty Letters of Credit. Please attach a copy of
               Ex-Im Bank's written consent.

          [X]  No

     D.   Are Retainage Accounts Receivable to be included in the Export-Related
          Borrowing Base?

          [ ]  Yes If yes, Ex-Im Bank's prior written consent must be given for
               each such Retainage Accounts Receivable. Please attach a copy of
               Ex-Im Bank's written consent.

          [X]  No

5.   Maximum Amount, Disbursement Terms and Conditions and Advance Rates:

     A.   Maximum Amount: $5,000,000

     B.   Disbursement Terms and Conditions:

          [X]  Disbursements will be made against multiple Export Orders.

                                        3

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          [ ]  Disbursements will be made against a specific contract.

     C.   Advance Rates by Categories of Primary Collateral:

          (1.) Inventory: The Advance Rate for Collateral categorized as
               Eligible Export-Related Inventory shall be:

                    Fifty percent ( 50% ) on finished goods
w                   Twenty-five percent (25%) on raw materials

          (2.) Accounts Receivable: The Advance Rate for Collateral categorized
               as Eligible Export-Related Accounts Receivable shall be:

                              Ninety percent (90%)

          (3.) Retainage Accounts Receivable: The Advance Rate for Collateral
               categorized as Retainage Accounts Receivable shall be:

                              N/A percent (___%)

          (4.) Other Assets: (Describe) N/A.
               The Advance Rate for Collateral categorized as Other Assets shall
               be:

                              N/A percent (___%)

D.   Type of Loan Facility and Exports supported:

          (1.) Type of Loan Facility:

          [X]  The Loan Facility is a Revolving Loan Facility (other than a
               Transaction Specific Revolving Loan Facility). (Complete parts 2
               and 3 below.)

          [ ]  The Loan Facility is a Transaction Specific Revolving Loan
               Facility. (Complete parts 3 and 4 below.)

          [ ]  The Loan Facility is a Transaction Specific Loan Facility.
               (Complete parts 3 and 4 below.)

          (2.) For a Revolving Loan Facility, identify the top three countries
               of export:
               Country of Export:   United Kingdom
               Country of Export:   Canada
               Country of Export:   Australia

          (3.) Estimated Total Export Sales each year to be supported by this
               Loan Facility: $25,000,000

                                        4

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          (4.) For a Transaction Specific Revolving Loan Facility or a
               Transaction Specific Loan Facility, identify the Export Order(s):
               N/A

               Country of Export:
                                    -----------------------
               Contract Price:      $
                                     ----------------------
               Contract Number:
                                    -----------------------
               Contract Date:
                                    -----------------------
               Parties:
                                    -----------------------

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

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

6.   Security Interests:

     Valid, enforceable and perfected security interests in the following
     Collateral, and the proceeds thereof:

     A.   First priority in the following (check all that apply):

          [ ]  All Inventory.

          [X]  All Export-Related Inventory.

          [ ]  All Export-Related Inventory relating to Specific Export
               Order(s).

          [ ]  All Accounts Receivable.

          [X]  All Export-Related Accounts Receivable.

          [ ]  All Export-Related Accounts Receivable relating to Specific
               Export Order(s).

          [ ]  All General Intangibles.

          [ ]  All Export-Related General Intangibles.

          [ ]  Other Collateral, please specify:  N/A

                                        5

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     B.   Secondary Collateral: Any other assets of Borrower in which Lender is
          receiving a Lien to secure any other financial accommodations provided
          by Lender to such Borrower.

          Please specify: Domestic inventory and accounts receivable, property,
          equipment, intellectual property, General Intangibles, 65% of capital
          stock of AMX (UK) Limited.

     C.   Guarantor Collateral: Any assets of a Guarantor or a third party in
          which Lender is granted a Lien to secure any financial accommodations
          provided by Lender to Borrower. N/A

          Please specify: _________________________________

     D.   Permitted Liens: N/A

     E.   The Liens of Lender on the Secondary Collateral shall be a first
          priority Lien except for the following Liens: N/A

     F.   The Liens of Lender on the Guarantor Collateral shall be a first
          priority Lien except for the following Liens: N/A

     G.   Are you separately collateralizing the 10% portion of this Loan
          Facility?
          No    X
          Yes  _____  If yes, please specify separate collateral. _____________

          _____________________________________________________________.

     Note: Lender cannot collateralize its retained 10% risk with cash, cash
     equivalents or marketable securities from Borrower, any Guarantor, or any
     of Borrower's Affiliates (as defined in Section 5(b) of the Delegated
     Authority Letter Agreement) or any third party guarantors.

7.   Terms of Sale of Export Orders:

     Export Orders financed under the Loan Facility shall be on terms which are
     typical for the industry but in no event to exceed 180 days from original
     invoice date, and shall be on the following terms:

     [ ]  Confirmed irrevocable letters of credit.

     [ ]  Irrevocable letters of credit.

     [ ]  Open account insured through Ex-Im Bank export credit insurance for
          comprehensive commercial and political risk.

                                        6

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     [ ]  Open account insured through non Ex-Im Bank export credit insurance
          for comprehensive commercial and political risk.

     [ ]  Cash payment received prior to shipment.

     [X]  Open account uninsured.

     [ ]  Sight drafts documents against payment (also known as "documentary
          collections").

     [ ]  Other terms. [If checked, any such terms of sale must be fully
          described on an attached addendum in order for this Notice to be
          considered complete.]

8.   Interest Rate and Other Fees.

     A.   Lender's Interest Rate: See pricing grid below

          Bank's Prime Rate + 0% or Libor + 1.25%

     B.   Other Fees: N/A

9.   Facility Fee: Lender will submit a completed and signed Schedule A together
     with the Facility Fee amount determined in accordance with the applicable
     section of Schedule A:

     A.   within ten (10) Business Days of the Effective Date;

     B.   with respect to a Revolving Loan Facility (other than a Transaction
          Specific Revolving Loan Facility), within ten (10) Business Days of
          the first and second anniversaries of the Effective Date, as
          applicable; and/or

     C.   within ten (10) Business Days of the Effective Date of an Extension of
          the Final Disbursement Date (such Extensions not to exceed
          one-hundred-twenty (120) days in the aggregate), as applicable. Please
          note that Ex-Im Bank considers a Renewal to be a new Loan Facility
          rather than an Extension.

10.  Final Disbursement Date: September 29, 2003

                                        7

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11.  Financial Reporting Requirements: Borrower and each Guarantor shall deliver
     to Lender the following financial statements:

     A.   Year End Financial Statements.
          Within one hundred and twenty (120) days of Borrower's and each
          Guarantor's (other than individual Guarantor) fiscal year end or if
          such Person is required to submit a Form 10-K at the time of filing of
          such Form 10-K, the income statement, balance sheet and statement of
          cash flow as of such fiscal year-end including in each case all
          footnotes and other disclosures which have been (check one):

          [X]  certified without qualification by an independent accounting firm
               acceptable to Lender (the "Accountants") (For Loan Facilities of
               $5,000,000 or more)

          [ ]  reviewed by the Accountants (For Loan Facilities of $2,000,000 or
               more but less than $5,000,000)

          [ ]  compiled by the Accountants (For Loan Facilities of $1,000,000 or
               more but less than $2,000,000)

          [ ]  internally prepared by management of such Person in accordance
               with GAAP certified as fairly presenting the financial condition
               of such Person as of the date thereof by an authorized officer of
               such Person (For Loan Facilities of less than $1,000,000)

     B.   Quarterly Financial Statements.
          Within 45 days of Borrower's and each Guarantor's (other than an
          individual Guarantor) fiscal quarter end or if such Person is required
          to submit a Form 10-Q at the time of filing of such Form 10-Q, the
          income statement, balance sheet and statement of cash flow as of the
          end of such fiscal quarter which have been internally prepared by
          management of such Person in accordance with GAAP certified as fairly
          presenting the financial condition of such Person as of the date
          thereof by an authorized officer of such Person.

     C.   Individual Guarantors Financial Statements: Once each year, a personal
          financial statement on a bank form or such other form generally
          accepted by Lender.

12.  Country Limitation Schedule: (See Country Limitation Schedule dated June
     20, 2002, attached hereto, which may be updated from time to time)

13.  Waiver Letter: Please reference attached waiver letter dated August 16,
     2002 for a listing of approved waiver items.

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     IN WITNESS WHEREOF, Lender has caused this instrument to be executed and
delivered as of this 30th day of September, 2002.

Name of Lender:   Bank One, NA
                  Main Office Chicago

         By:       /s/ Martha Gentry
                  ----------------------------
                       (Signature)

         Name:    Martha Gentry
                     (Print or Type)

         Title:   Vice President
                     (Print or Type)

Address:
         1700 Pacific Avenue, 21st Floor      Telephone: 214-290-2905
         Dallas, TX  75201                    Telefax:   214-290-3813

Receipt acknowledged by:

EXPORT-IMPORT BANK OF THE UNITED STATES

By:     /s/ Sam Z. Zytcer
       -------------------------
        (Signature)

Name:  Sam Z. Zytcer

Title: Vice President, Business Credit Division

Date:  September 30, 2002
       -------------------------

Ex-Im Bank hereby designates the Loan Facility referred to in this Loan
Authorization Notice as Guaranteed Loan Facility No. AP076761XB

                                        9Form of Restricted Stock Rights

 EXHIBIT 10.1 
  
 VINTAGE PETROLEUM, INC. 
  
 RESTRICTED STOCK RIGHTS AWARD AGREEMENT 

 
                             , 200     
  
 [Name and Address] 
  
 Dear
                        : 
  
 1.    Restricted Rights Stock Award.    Vintage Petroleum, Inc., a Delaware corporation (the “Company”), hereby grants to you an aggregate of
                 restricted stock rights (individually, a “RSR,” and collectively, “RSRs”). Each RSR entitles you to receive one share of Common
Stock, par value $.005 per share, of the Company (“Restricted Shares”) at such time as the restrictions described in Section 4(b) lapse as described in Section 5. This award is subject to your acceptance of and agreement to all of the
applicable terms, conditions, and restrictions described in the Company’s 1990 Stock Plan, as amended (the “Plan”), a copy of which is on file with, and may be obtained from, the Secretary of the Company, and to your acceptance of and
agreement to the further terms, conditions, and restrictions described in this Restricted Stock Rights Award Agreement (this “Award Agreement”). To the extent that any provision of this Award Agreement conflicts with the expressly
applicable terms of the Plan, it is hereby acknowledged and agreed that those terms of the Plan shall control and, if necessary, the applicable provisions of this Award Agreement shall be hereby deemed amended so as to carry out the purpose and
intent of the Plan. This award shall constitute an “Award” under the Plan, and any capitalized terms used in this Award Agreement that are not otherwise defined herein shall have the respective meanings provided in the Plan. 

 
 2.    Restricted Share Certificates.    The Company shall register and issue a
certificate(s) for the Restricted Shares you become entitled to receive hereunder in your name as soon as practicable after the restrictions described in Section 4(b) lapse as described in Section 5. All certificates for Restricted Shares delivered
to you pursuant to this Award Agreement shall be subject to such stop transfer orders and other restrictions as the committee of the Board of Directors of the Company that administers the Plan may deem necessary or advisable under the Plan and the
rules, regulations and other requirements of the Securities and Exchange Commission, any stock exchange upon which such Restricted Shares are then listed, and any applicable foreign, federal or state securities laws. 

  
 3.    Stockholder Rights Prior to Issuance of Restricted
Shares.    Neither you nor any of your beneficiaries shall be deemed to have any voting rights, rights to receive any dividends or other rights as a stockholder of the Company with respect to any Restricted Shares covered by
the RSRs until the date of issuance by the Company of a certificate to you for such Restricted Shares. 
  
 4.    Restrictions. 
  
 (a)    Your
ownership of the RSRs shall be subject to (i) the restrictions set forth in subsection (b) of this Section until such restrictions lapse pursuant to the terms of Section 5 and (ii) the restrictions set forth in subsection (c) of this Section until
such RSRs shall be redeemed for the applicable Restricted Shares or otherwise forfeited to the Company. 
  
 (b)    At the time of your “Termination of Employment” (as defined in Section 10(b)), other than a Termination of Employment that occurs as a result of an event described in Section 5(b)(1) or a
Termination of Employment that is described in Section 5(b)(2), all of your RSRs shall be forfeited to the Company and all of your rights to receive any Restricted Shares in the future pursuant to the RSRs shall automatically terminate without any
payment of consideration by the Company. 
  
 (c)    You may not sell, assign,
transfer or otherwise dispose of any RSRs or any rights under the RSRs. No RSR and no rights under any such RSR may be pledged, alienated, attached or otherwise encumbered, and any purported pledge, alienation, attachment or encumbrance thereof
shall be void and unenforceable against the Company. 
  
 5.    Lapse of Restrictions.

  
 (a)    The restrictions described in Section 4(b) shall lapse with respect to
             of the RSRs on the first anniversary of the date hereof, another              of the RSRs on the second anniversary
of the date hereof, and the last              of the RSRs on the third anniversary of the date hereof. Following the lapse of such restrictions with respect to any RSRs, the Company will
issue you a certificate as provided in Section 2 of this Award Agreement for the Restricted Shares covered by such RSRs in redemption of such RSRs. 
  
 (b)    Notwithstanding the provisions of subsection (a) of this Section 5, the restrictions described in Section 4(b) shall lapse with
respect to all the RSRs at the time of the occurrence of any of the following events: 
  
 (1)    Your death or “Disability” (as defined in Section 10(c)); 
  
 (2)    Your Termination of Employment, but only if such Termination of Employment is the result of a dismissal or other action by the Company or any of its Subsidiaries and does not constitute a “Termination
for Cause” (as defined in Section 10(a)); or 

 
 2 

  
 (3)    A “Change of Control” (as
defined in the Plan) of the Company or a “Change of Control” (as defined in Section 10(d)) of Vintage Petroleum Canada, Inc., an Alberta corporation (“Vintage Canada”). 
  
 Following the lapse of the restrictions described in Section 4(b), the Company will issue you a certificate as provided in Section 2 of this Award Agreement
for the Restricted Shares covered by such RSRs in redemption of such RSRs. 
  
 6.    Agreement
With Respect to Taxes.    You agree that (a) you will pay to the Company or a Subsidiary, as the case may be, or make arrangements satisfactory to the Company or such Subsidiary regarding the payment of, any foreign, federal,
state, or local taxes of any kind required by law to be withheld by the Company or any of its Subsidiaries with respect to the RSRs awarded or the issuance of any Restricted Shares to you (provided, however, that you shall not be entitled or
permitted to satisfy this obligation by the Company’s withholding of stock that is issuable to you pursuant to this Award Agreement or by your transfer of other shares of stock to the Company or a Subsidiary) and (b) the Company or any of its
Subsidiaries shall, to the extent permitted by law, have the right to deduct from any payments of any kind otherwise due to you any foreign, federal, state, or local taxes of any kind required by law to be withheld with respect to the RSRs awarded
or Restricted Shares issued. 
  
 7.    Adjustment of Shares.    In the
event of any change affecting the shares of Common Stock of the Company by reasons of any stock dividend or split, recapitalization, merger, consolidation, spin-off, combination or exchange of shares, or other corporate change, or any distributions
to stockholders, the number of Restricted Shares subject to the RSRs awarded to you under this Award Agreement shall be adjusted as provided in Section 12 of the Plan. 
  
 8.    Agreement With Respect to Securities Matters.    You agree that you will not sell or otherwise transfer any Restricted
Shares received pursuant to this Award Agreement except pursuant to an effective registration statement under the U.S. Securities Act of 1933, as amended, or pursuant to an applicable exemption from such registration. Unless a registration statement
relating to the Restricted Shares issuable upon the lapse of the restrictions on the RSRs pursuant to this Award Agreement is in effect at the time of issuance of such Restricted Shares, the certificate(s) for the Restricted Shares shall contain the
following legend: 
  
 The securities evidenced by this certificate have not been registered under the
U.S. Securities Act of 1933 or any other securities laws. These securities have been acquired for investment and may not be sold or transferred for value in the absence of an effective registration of them under the U.S. Securities Act of 1933 and
any other applicable securities laws, or receipt by the Company of an opinion of counsel or other evidence acceptable to the Company that such registration is not required under such acts. 

 
 3 

  
 9.    Transfer Taxes.    The
Company shall pay all original issue and transfer taxes with respect to the issue and transfer of the Restricted Shares to you pursuant to this Award Agreement and all other fees and expenses necessarily incurred by it in connection therewith.

  
 10.    Certain Definitions.    As used in this Award Agreement,
the following terms shall have the respective meanings indicated: 
  
 (a)    “Termination for Cause” shall mean a Termination of Employment as a result of (1) your willful and continued failure substantially to perform your duties (other than any such failure resulting
from your incapacity due to physical or mental illness), (2) your conviction for a felony, proven or admitted fraud, misappropriation, theft or embezzlement by you, your inebriation or use of illegal drugs in the course of, related to or connected
with the business of the Company or any of its Subsidiaries, or your willful engaging in misconduct that is materially injurious to the Company or any of its Subsidiaries, monetarily or otherwise, or (3) if you have entered into an employment
agreement or contract with the Company or any of its Subsidiaries, any other action or omission that is identified in such agreement or contract as giving rise to “Cause” for the termination of your employment with the Company or any of
its Subsidiaries. For this purpose, no act, or failure to act, on your part shall be considered “willful” unless done, or omitted, by you not in good faith and without reasonable belief that your action or omission was in the best interest
of Company or any of its Subsidiaries. 
  
 (b)    “Termination of
Employment” shall mean the termination of your full-time employment with the Company or any of its Subsidiaries for any reason other than your death or Disability. 
  
 (c)    “Disability” shall mean a physical or mental impairment of sufficient severity such that, in the opinion of a physician
selected by the Company, you are unable to continue to serve as an employee of the Company or any of its Subsidiaries. 
  
 (d)    “Change of Control” of Vintage Canada shall mean (1) an acquisition of all or substantially all of the shares of Vintage Canada, or (2) an acquisition of all or substantially all of the
assets of Vintage Canada; excluding in either case transfers among the Company or any of its direct or indirect affiliates or Subsidiaries (including joint ventures or partnerships). 

 
 4 

  
 If you accept this Restricted Stock Rights Award and agree to the foregoing terms
and conditions, please so confirm by signing and returning the duplicate copy of this Award Agreement enclosed for that purpose. 
  
 
	 VINTAGE PETROLEUM, INC.
 
	 
	 By:
 	 	  
 

	  	 	 Name:  ____________________________________________
  
 Title:    ____________________________________________
 

 
  
 The foregoing Restricted Stock Rights Award is accepted by me as
of            , 200    , and I hereby agree to the terms, conditions, and restrictions set forth above and in the Plan. 
  
  
 
	  
	 
	 

	  	 	  

 
  
  

 
 5

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