Document:

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                                       EXHIBIT 10.4.3

                                AMENDMENT NO. 1
              GENERAL AGREEMENT FOR PURCHASE CELLULAR SYSTEMS

    The undersigned parties to this agreement acknowledge that they are
entering into a first amendment (the "First Amendment") to the General
Agreement, Number LNM011398RMDCS, for Purchase of Cellular Systems, between
Lucent Technologies Inc. (Seller), a Delaware corporation having an office at
283 King George Road, Warren, New Jersey  07059, and Dobson Cellular Systems,
an Oklahoma corporation having an office at 13429 N. Broadway Extension Suite
200, Oklahoma City, Oklahoma  73114.

                                   RECITALS

    WHEREAS, the undersigned parties have previously entered into the General
Agreement; and

    WHEREAS, the undersigned parties now wish to modify the General Agreement
with respect to the Customer's purchases associated with properties in
Michigan 3.

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

    1.  The term of the General Agreement is extended to January 13, 2002.

    2.  Customer agrees to purchase a total of 400 cell sites and spend a
        minimum of $131 million during the term of the General Agreement, of
        which 157 cell sites and $54.2 million have been achieved by Customer
        as of April 10, 2000.

    3.  Seller will receive vendor exclusivity in Michigan except for
        existing or acquired Nortel properties.

    4.  Customer will pay existing contract cell model prices up through a
        cumulative total of 162 cells.

    5.  Exhibit 1, Pricing Summary and Pricing Summary Notes and Exhibit 2,
        Growth Pricing, are hereby incorporated as part of this Amendment 1.

    IN WITNESS WHEREOF, the parties have caused this First Amendment to be
executed by their duly authorized representatives on the date(s) indicated.

DOBSON CELLULAR SYSTEMS                LUCENT TECHNOLOGIES, INC.

By:                                    By:
   --------------------------------       ------------------------------------

Name:   G. Edward Evans                Name:
                                            ----------------------------------

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Title:  President                      Title:
                                             ---------------------------------

Date:   April 10, 2000                 Date:
                                            ----------------------------------

                                       2<PAGE>

                                       Exhibit 10.4.6

                                AMENDMENT NO. 5

                                      TO

                                SUPPLY AGREEMENT

                                    BETWEEN

                       DOBSON COMMUNICATIONS CORPORATION

                                      AND

                              NORTEL NETWORKS INC.

    Made as of this 3rd day of November 1999 ("Effective Date No. 5"), by and
between Dobson Communications Corporation, an Oklahoma corporation with
offices at 13439 North Broadway Extension, Suite 200, Oklahoma City, Oklahoma
73114 (hereinafter referred to as "Buyer") and Nortel Networks Inc.
(successor in interest to Northern Telecom Inc.), a Delaware corporation with
offices at 2221 Lakeside Boulevard, Richardson, Texas  75082 (hereinafter
referred to as "Nortel" or "Seller").

    WHEREAS, Buyer and Seller entered into a Supply Agreement dated as of
December 6, 1995, as amended (the "Agreement"); and

    WHEREAS, Buyer and Seller now wish to amend the Agreement to include,
among other things, an extended Term, an increased commitment to purchase by
Buyer and new discounts applicable to future Equipment purchases, all as
further described herein:

    NOW, THEREFORE, in consideration of the mutual covenants herein
contained, Buyer and Seller agree to amend the Agreement as follows:

    1.  Unless otherwise defined, capitalized terms herein shall have the same
        meaning as in the Agreement.

    2.  Amend Article 1, Section 1.21 "EXTENDED TERM" (as amended by
        Amendment No. 3) by deleting the words "ending four (4) years and
        five (5) months thereafter" and replacing them with "ending December 31,
        2002."

    3.  Amend Article 4 "PRICE" (as amended by Amendment No. 3) by deleting
        the last sentence of Section 4.1 in its entirety and replacing it with
        the following:

        "Buyer understands that it has a firm obligation to purchase/license
        no less than $120 million net Price (i.e., Price inclusive of applicable
        discounts, but exclusive

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        of sales tax) of Equipment and/or Software from Seller during the
        Extended Term ('Commitment')."

    4.  Amend Article 7 "WARRANTIES, REMEDIES AND LIMITATION OF WARRANTIES
        AND REMEDIES AND DISCLAIMERS OF WARRANTIES AND LIABILITY" by adding a
        new Section 7.6 as follows:

        "7.6  Beginning upon Effective Date No. 5 through December 31, 2002,
        Seller shall provide its remote TAS services to Buyer at no charge in
        accordance with Section 7.3.1 and Sections 1 through 4 of Annex 5."

    5.  Amend Annex 1A "EXTENDED TERM EQUIPMENT AND SERVICES PRICING"
        (Schedule A to Amendment No. 2, as amended in Amendment No. 4) as
        follows:

        (a)  By deleting the word ($6.00) and replacing it with ($5.00) in
             Section 4.1(a); and,

        (b)  By deleting Section 5.2.1 in its entirety and replacing it with
             the following:

             "5.2.1 Following Buyer's purchase and effective on the date of
                    final payment to Seller of the total Price for the Extended
                    Term Additional Purchase set forth in Section 2.0 of Annex
                    1A and the CDMA Equipment Purchase set forth in Section 6.0
                    of Annex 1A, the following discounts and firm, fixed Prices
                    shall replace the discounts and firm, fixed Prices set
                    forth in Section 5.2 above:

                    (a)  The following new discounts shall apply:

<TABLE>
<CAPTION>
                    Description                        Discount off Seller's then-current List Price
                    -----------                        ---------------------------------------------
<S>                                                    <C>
                    Switch/TDMA Hardware                                  56%

                    Cell Site Hardware                                    55%

                    (exclusive of radios/amplifiers)

                    BSC/BTS                                               40%

                    CDMA Software                                         40%
</TABLE>

                    (b)  Buyer may purchase TRU-III/SCLPA(s) or
                         TRU-II/SLPA(s) for the net Price per radio/amplifier
                         unit (i.e., Price per radio/amplifier unit inclusive
                         of discounts, but exclusive of sales tax) of $3,990.

                    With the exception of Purchase Orders for the Extended
                    Term Additional Purchase and the CDMA Equipment Purchase,
                    and conditioned upon the completion of payment of the
                    Extended Term Additional Purchase and the CDMA Equipment
                    Purchase, the

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                    discounts set forth in (a) and (b) above shall be
                    retroactive to all Purchase Orders received by Seller after
                    September 1, 1999 ("Applicable Purchase Orders").  For
                    Applicable Purchase Orders received by Seller between
                    September 1, 1999 and Effective Date No. 5, Seller shall
                    provide product credits to Buyer equal to the difference
                    between the Prices set forth in such Applicable Purchase
                    Orders and the Prices at the new discount levels.  Buyer
                    may apply product credits towards purchases of additional
                    Equipment hereunder.  Any unused product credits will be
                    forfeited upon the termination or expiration of this
                    Agreement.

                    (c)  The exclusions described in Section 5.2 (as
                         previously amended in Amendments No. 3 and 4),
                         sub-parts (i), (ii) and (iii) above shall continue to
                         apply; and

                    (d)  Add a new Section 7.0 (Additional Incentives), as
                         set forth in Schedule A, attached and incorporated
                         herein.

    6.  Add a new Annex 8B (EXTENDED TERM RF OPTIMIZATION SERVICES STATEMENT
        OF WORK) as set forth in Schedule B, attached hereto and incorporated
        herein.

    7.  Add the appropriate Annex listings for new Annex 8B to the Table of
        Contents and Section 23 (ANNEXES) respectively.

    8.  Except as specifically modified by this Amendment No. 5, the
        Agreement in all other respects shall continue in full force and effect.

    IN WITNESS WHEREOF, the parties have caused this Amendment No. 5 to be
signed by their duly authorized representatives effective as of the date
first set forth above.

DOBSON COMMUNICATIONS INC.             NORTEL NETWORKS INC.

By:                                    By:
   ----------------------------           ----------------------------------

-------------------------------           ----------------------------------
      Type or Print Name                           Type or Print Name
Title:                                 Title:
      -------------------------              -------------------------------
Date:                                  Date:
     --------------------------             --------------------------------

                                      -3-

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