Document:

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                                                                   EXHIBIT 10.28

                                                                      No.  8-032

THE OPTION TO PURCHASE SHARES OF THE COMMON STOCK OF ESAT, INC., REPRESENTED BY
THIS AGREEMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE
"ACT"), AND ARE "RESTRICTED SECURITIES" AS THAT TERM IS DEFINED IN RULE 144
UNDER THE ACT. NEITHER THE OPTIONS NOR THE UNDERLYING SHARES MAY BE OFFERED FOR
SALE, SOLD OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE ACT, THE AVAILABILITY OF WHICH IS TO BE ESTABLISHED TO THE
SATISFACTION OF SAID CORPORATION AND SUCH FURTHER RESTRICTIONS AS THE BOARD OF
DIRECTORS MAY DETERMINE.

                             STOCK OPTION AGREEMENT

   STOCK OPTION AGREEMENT effective as of this 15 day of March, 2000, between
eSat, Inc., a Nevada corporation (the "Corporation"), and MARK BASILE (the
"Recipient").

    WHEREAS, the Corporation, by action of the Board of Directors on December
2000, has authorized the granting of stock options to purchase 150,000 shares of
this Corporation's common stock, $.001 par value ("Common Stock"), to MARK
BASILE at an exercise price of $ 4.187 per share.

   NOW, THEREFORE, for good and valuable consideration, the receipt and adequacy
whereof is hereby acknowledged, the Corporation and the Optionee agree as
follows:

  1.  Grant of Option. The Corporation hereby grants to MARK BASILE an option to
      purchase (the "Option") an aggregate of 150,000 shares of the
      Corporation's common stock for a purchase price of $ 4.187 per share (the
      "Option Price").

  2.  Vesting of Option. This option shall vest as to 50,000 of the shares
      covered hereby on the one year anniversary and 50,000 of the shares
      covered hereby on the second year anniversary of the date of Grant and
      50,000 of the shares covered herby on the third year anniversary of the
      date of Grant.

  3.  Exercise of Option. Except as otherwise provided in Sections 3, 4, & 6 of
      this Agreement, this Option may be exercised in whole or in part at any
      time during the term of the Option, provided, however, no portion of this
      Option shall be exercisable after the expiration of the term thereof.

  4.  Manner of Exercise.

        (a)    During the lifetime of the Recipient, only he/she may exercise
               the Option or any portion thereof. After the death of the
               Recipient, any exercisable portion of the Option may, prior to
               the time when the Option becomes unexercisable under Section 3.3,
               be exercised by the Recipient's personal representative or by any
               person empowered to do so under the Recipient's will or under the
               then applicable laws of descent and distribution.

        (b)    The Option, or any exercisable portion thereof, may be exercised
               solely by delivery to the Secretary or the Secretary's office of
               all of the following prior to the time when such exercisable
               Option or portion thereof becomes unexercisable:

               (i) Notice in writing signed by the Recipient, or such other
               person then entitled to exercise the Option or portion thereof,
               stating that the Option or portion thereof is thereby exercised,
               such notice complying with all applicable rules established by
               the Corporation; and

               (ii)   (a) Full payment (in cash or by check) for the shares with
                      respect to which such Option or portion thereof is
                      exercised; or

                      (b) With the consent of the Corporation, shares of the
                      Company's Common Stock owned by the Recipient duly
                      endorsed for transfer to the Company with a Fair Market
                      Value on

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                      the date of delivery equal to the aggregate
                      purchase price of the shares with respect to which such
                      Option or portion thereof is exercised.

  5.  Term of Option. The term of the Option will be through March 15, 2004,
      subject to Paragraphs 7 and 8 as provided in this Agreement.

      The Recipient of the Option will not have any rights to dividends or any
      other rights of a shareholder with respect to any shares of Common Stock
      subject to the Option until such shares shall have been purchased through
      the exercise of the Option and has been evidenced on the stock transfer
      records of the Corporation maintained by the Corporation's transfer agent.

  6.  Performance Restrictions. The Recipient of this Option will not have the
      right to exercise this Option until confirmation by the Board of Directors
      that the following performance goals have been completed:

      NONE.

  7.  Transferability Restriction. The Option may not be assigned, transferred
      or otherwise disposed of, or pledged or hypothecated in any way (whether
      by operation of law or otherwise) (1) without the consent of the
      Corporation, and (2) such transfer is not in violation of the Securities
      Act of 1933, the Corporate Securities Laws of the State of Nevada, or the
      securities laws of any state. Any assignment, transfer, pledge,
      hypothecation or other disposition of the Option or any attempt to make
      any such levy of execution, attachment or other process not in accordance
      with the foregoing sentence shall cause the Option to terminate
      immediately upon the happening of any such event, and the Recipient shall
      lose all rights under this agreement, provided, however, that any such
      termination of the Option under the foregoing provisions of this Paragraph
      6, will not prejudice any rights or remedies which the Corporation may
      have under this Agreement or otherwise.

  8.  Death, Disability or Retirement of Recipient. The Recipient's rights to
      exercise this Option upon the death, disability or retirement of the
      Recipient are set forth as follows:

      (a) If the Recipient ceases to be in Service to the Corporation for a
          reason other than permanent disability or death, the Recipient must,
          within (2) months after the date of termination of such Service, but
          in no event after the Option's stated expiration date, exercise some
          or all of the Options that the Recipient was entitled to exercise on
          the date the Recipient's Service terminated. All options which have
          not vested in accordance with Section will thereafter be void for all
          purposes. If the Recipient ceases to be in Service to the Corporation
          by reason of permanent disability within the meaning of section
          22(e)(3) of the Internal Revenue Code (as determined by the Board of
          Directors), the Recipient will have two (2) months after the date of
          termination of Service, but in no event after the stated expiration
          date of the Recipient's Options, to exercise Options that the
          Recipient was entitled to exercise on the date the Recipient's Service
          terminated as a result of the disability.

      (b) If a Recipient dies while in the Corporation's Service, any Options
          that the Recipient was entitled to exercise on the date of death will
          be exercisable within the six-month period following the date of
          issuance of letters testamentary or letters of administration of a
          deceased Recipient, in the case of the Recipient's death during his
          Service to the Corporation's Board, but not later than one year after
          the Recipient's death or until the stated expiration date of the
          Recipient's Option, whichever occurs first, by the person or persons
          ("successors") to whom the Recipient's rights pass under a will or by
          the laws of descent and distribution. As soon as practicable after
          receipt by the Corporation of such notice and of payment in full of
          the Option Price, a certificate or certificates representing the
          Optioned Shares shall be registered in the name or names specified by
          the successors in the written notice of exercise and shall be
          delivered to the successors.

      (c) The term "Service" means service as an employee, as an independent
          contractor, or an employee of an independent contractor.

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  9.  No Registration Obligation. The Recipient understands that the Option is
      not registered under the Securities Act of 1933, as amended (the
      "Securities Act") and the Corporation has no obligation to register under
      the Securities Act the Option or any of the shares of Common Stock subject
      to and issuable upon the exercise of the Option. The Recipient represents
      that the Option is being acquired by him for investment and acknowledges
      that all certificates for the shares issued upon exercise of the Option
      will bear the following legend unless such shares are registered under the
      Securities Act prior to their issuance:

                The shares of Common Stock evidenced by this certificate have
                been issued to the registered owner in reliance upon written
                representations that these shares have been purchased solely for
                investment. These shares may not be sold, transferred or
                assigned unless in the opinion of the Corporation and its legal
                counsel such sales, transfer or assignment will not be in
                violation of the Securities Act of 1933, as amended, and the
                rules and regulations thereunder.

      The Recipient further understands and agrees that the Option may be
      exercised only if at the time of such exercise the Recipient and the
      Corporation are able to establish the existence of an exemption from
      registration under the Securities Act and applicable state laws.

  10. Effect of Certain Changes.

      (a) If there is any change in the number of shares of outstanding Common
          Stock through the declaration of stock dividends, or through a
          recapitalization resulting in stock splits or combinations or
          exchanges of such shares, the number of shares of Common Stock
          available for Options and the number of such shares covered by
          outstanding Options, and the exercise price per share of the
          outstanding Options, shall be proportionately adjusted by the Board to
          reflect any increase or decrease in the number of issued shares of
          Common Stock: provided, however, that any fractional shares resulting
          from such adjustment shall be eliminated.

      (b) In the event of the proposed dissolution or liquidation of the
          Corporation, or any corporate separation or division, including, but
          not limited to, split-up, split-off or spin-off, or a merger or
          consolidation of the Corporation with another corporation, or any sale
          or transfer by the Corporation of all or substantially all its assets
          or any tender offer or exchange offer for or the acquisition, directly
          or indirectly, by any person or group for more than 50% of the then
          outstanding voting securities of the Corporation, the Board may
          provide that the Recipient shall have the right to exercise such
          Option (at its then current Option Price) solely for the kind and
          amount of shares of stock and other securities, property, cash or any
          combination thereof receivable upon such dissolution, liquidation,
          corporate separation or division, merger or consolidation, sale or
          transfer of assets or tender offer or exchange offer, by a Recipient
          of the number of shares of Common Stock for which such Option might
          have been exercised immediately prior to such dissolution,
          liquidation, corporate separation or division, or merger or
          consolidation: sales or transfer of assets or tender offer or exchange
          offer, or in the alternative the Board may provide that each Option
          granted herein shall terminate as of a date fixed by the Board:
          provided, however, that not less than 30 day's written notice of the
          date so fixed shall be given to the Recipient, who shall have the
          right, during the period of 30 days preceding such termination, to
          exercise the Option.

      (c) Paragraph (b) of this Section 10 shall not apply to a merger or
          consolidation in which the Corporation is the surviving corporation
          and shares of Common Stock are not converted into or exchanged for
          stock, securities of any other corporation, cash or any other thing of
          value. Notwithstanding the preceding sentence, in case of any
          consolidation or merger of another corporation into the Corporation in
          which the Corporation is the surviving corporation and in which there
          is a reclassification or change (including a change which results in
          the right to receive cash or other property) of the shares of Common
          Stock (other than a change in par value, or from no par value to par
          value, or as a result of a subdivision or combination, but including
          any change in such shares into two or more classes or series of
          shares), the Board may provide that the Recipient shall have the right
          to exercise such Option solely for the kind and amount of shares of
          stock and other securities (including those of any direct or indirect
          Parent of the Corporation), property, cash or any combination thereof
          receivable upon such reclassification, change

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          consolidation or merger by the Recipient of the number of shares of
          Common Stock for which Option might have been exercised.

      (d) If there is a change in the Common Stock of the Corporation as
          presently constituted, which is limited to a change of all of its
          authorized shares with par value into the same number of shares with a
          different par value or without par value, the shares resulting from
          any such change shall be deemed to be the Common Stock within the
          meaning of this Stock Option Agreement.

      (e) To the extent that the foregoing adjustments relate to stock or
          securities of the Corporation, such adjustments shall be made by the
          Board.

      (f) Except as expressly provided in this Section 10, the Recipient shall
          have no rights by reason of any subdivision or consolidation of shares
          of stock of any class or the payment of any stock dividend or any
          other increase in the number of shares of stock of any class or by
          reason of any dissolution, liquidation, merger, or consolidation or
          split-up, split-off, or spin-off of assets or stock of another
          corporation; and any issue by the Corporation of shares of stock of
          any class, or securities convertible into shares of stock of any
          class, shall not effect, and no adjustment by reason thereof shall be
          made with respect to, the number or price of shares of Common Stock
          subject to this Option. The grant of this Option shall not affect in
          any way the right or power of the Corporation to make adjustments,
          reclassifications, reorganizations or changes of its capital or
          business structures or to merge or consolidate or to dissolve,
          liquidate or sell or transfer all or any part of its business or
          assets.

  11. Notices. Each notice relating to this Agreement will be in writing and
      delivered in person or by certified mail to the proper address. Notices to
      the Corporation shall be addressed to the Corporation c/o President, eSat,
      Inc., 16520 Harbor Blvd., Bldg, G, Fountain, Valley, CA 92708. Notices to
      the Recipient or other person or persons then entitled to exercise the
      Option shall be addressed to the Recipient or such other person or persons
      at the Recipient's address specified below. Anyone to whom a notice may be
      given under this Agreement may designate a new address by notice to that
      effect given pursuant to this Paragraph 11

  12. Approval of Consent. The exercise of the Option and the issuance and
      delivery of shares of Common Stock pursuant thereto shall be subject to
      approval by the Corporation's counsel of all legal matters in connection
      therewith, including compliance with the requirements of the Securities
      Act, the Securities Exchange Act of 1934, as amended, applicable state
      securities laws, the rules and regulations thereunder, and the
      requirements of any national securities exchange or association upon which
      the Common Stock than may be listed.

  13. Benefits of Agreement. This Agreement will inure to the benefit of and be
      binding upon each successor and assign of the Corporation. All obligations
      imposed upon the Recipient and all rights granted to the Corporation under
      this Agreement will be binding upon the Recipient" heirs, legal
      representatives and successors.

  14. Governmental and Other Regulations. The exercise of the Option and the
      Corporation's obligation to sell and deliver shares upon the exercise of
      rights to purchase shares is subject to all applicable federal and state
      laws, rules and regulations, and to such approvals by the regulatory or
      governmental agency which, in the opinion of counsel for the Corporation,
      may be required.

  15. Conditions to Exercise. The shares of stock deliverable upon the exercise
      of the Option, or any portion thereof, may be either previously authorized
      but unissued shares or issued shares which have then been reacquired by
      the Company. Such shares shall be fully paid and non-assessable. The
      Company shall not be required to issue or deliver any certificate or
      certificates for shares of stock purchased upon the exercise of the Option
      or portion thereof prior to fulfillment of all of the following
      conditions:

        (i)    The admission of such shares to listing on all stock exchanges,
               if any, on which such class of stock is then listed;

        (ii)   The completion of any registration or other qualification of such
               shares under any state or federal law or under the rulings or
               regulations of the Securities and Exchange Commission or any
               other

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               governmental regulatory body, which the Corporation shall,
               in its absolute discretion, deem necessary or advisable;

        (iii)  The obtaining of any approval or other clearance from any state
               or federal governmental agency which the Corporation shall, in
               its absolute discretion, determine to be necessary or advisable;

        (iv)   The payment to the Company of all amounts which it is required to
               withhold under federal, state or local law in connection with the
               exercise of the Option; and

        (v)    The lapse of such reasonable period of time following the
               exercise of the Option as the Corporation may from time to time
               establish for reasons of administrative convenience.

        This Stock Option Agreement is executed in the name and on behalf of the
  Corporation by one of its duly authorized officers and by the Recipient all as
  of the date first above written.

                                   ESAT, INC.

                          By
                            ---------------------------

        The undersigned Recipient understands the terms of this Option
  Agreement. The undersigned agrees to comply with the terms and conditions of
  this Option Agreement.

Date___________, 2000                 Signature:_______________________________
                                      Printed Name:____________________________
                                      Tax ID # (SSN):__________________________
                                      Address:_________________________________
                                              _________________________________

                                      -5-<PAGE>   1
                                                                   EXHIBIT 10.29

                                                                       No. 8-030

THE OPTION TO PURCHASE SHARES OF THE COMMON STOCK OF ESAT, INC., REPRESENTED BY
THIS AGREEMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE
"ACT"), AND ARE "RESTRICTED SECURITIES" AS THAT TERM IS DEFINED IN RULE 144
UNDER THE ACT. NEITHER THE OPTIONS NOR THE UNDERLYING SHARES MAY BE OFFERED FOR
SALE, SOLD OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE ACT, THE AVAILABILITY OF WHICH IS TO BE ESTABLISHED TO THE
SATISFACTION OF SAID CORPORATION AND SUCH FURTHER RESTRICTIONS AS THE BOARD OF
DIRECTORS MAY DETERMINE.

                             STOCK OPTION AGREEMENT

   STOCK OPTION AGREEMENT effective as of this 1st day of January, 2000,
between eSat, Inc., a Nevada corporation (the "Corporation"), and STEVEN A. TULK
(the "Recipient").

   WHEREAS, the Corporation, by action of the Board of Directors on January
2000, has authorized the granting of stock options to purchase 350,000 shares of
this Corporation's common stock, $.001 par value ("Common Stock"), to RECIPIENT
at an exercise price of $ 4.00 per share.

   NOW, THEREFORE, for good and valuable consideration, the receipt and adequacy
whereof is hereby acknowledged, the Corporation and the Optionee agree as
follows:

  1.  Grant of Option. The Corporation hereby grants to RECIPIENT an option to
      purchase (the "Option") an aggregate of 350,000 shares of the
      Corporation's common stock for a purchase price of $ 4.00 per share (the
      "Option Price").

  2.  Vesting of Option. This option shall vest as to 116,667 of the shares
      covered hereby immediately and 116,667 of the shares covered hereby on the
      one year anniversary of the date of Grant and 116,666 of the shares
      covered herby on the second year anniversary of the date of Grant.

  3.  Exercise of Option. Except as otherwise provided in Sections 3, 4, & 6 of
      this Agreement, this Option may be exercised in whole or in part at any
      time during the term of the Option, provided, however, no portion of this
      Option shall be exercisable after the expiration of the term thereof.

  4.  Manner of Exercise.

        (a)    During the lifetime of the Recipient, only he/she may exercise
               the Option or any portion thereof. After the death of the
               Recipient, any exercisable portion of the Option may, prior to
               the time when the Option becomes unexercisable under Section 3.3,
               be exercised by the Recipient's personal representative or by any
               person empowered to do so under the Recipient's will or under the
               then applicable laws of descent and distribution.

        (b)    The Option, or any exercisable portion thereof, may be exercised
               solely by delivery to the Secretary or the Secretary's office of
               all of the following prior to the time when such exercisable
               Option or portion thereof becomes unexercisable:

               (i) Notice in writing signed by the Recipient, or such other
               person then entitled to exercise the Option or portion thereof,
               stating that the Option or portion thereof is thereby exercised,
               such notice complying with all applicable rules established by
               the Corporation; and

               (ii)   (a) Full payment (in cash or by check) for the shares with
                      respect to which such Option or portion thereof is
                      exercised; or

                      (b) With the consent of the Corporation, shares of the
                      Company's Common Stock owned by the Recipient duly
                      endorsed for transfer to the Company with a Fair Market
                      Value on

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<PAGE>   2

                      the date of delivery equal to the aggregate
                      purchase price of the shares with respect to which such
                      Option or portion thereof is exercised.

  5.  Term of Option. The term of the Option will be through January 1, 2004,
      subject to Paragraphs 7 and 8 as provided in this Agreement.

      The Recipient of the Option will not have any rights to dividends or any
      other rights of a shareholder with respect to any shares of Common Stock
      subject to the Option until such shares shall have been purchased through
      the exercise of the Option and has been evidenced on the stock transfer
      records of the Corporation maintained by the Corporation's transfer agent.

  6.  Performance Restrictions. The Recipient of this Option will not have the
      right to exercise this Option until confirmation by the Board of Directors
      that the following performance goals have been completed:

      NONE.

  7.  Transferability Restriction. The Option may not be assigned, transferred
      or otherwise disposed of, or pledged or hypothecated in any way (whether
      by operation of law or otherwise) (1) without the consent of the
      Corporation, and (2) such transfer is not in violation of the Securities
      Act of 1933, the Corporate Securities Laws of the State of Nevada, or the
      securities laws of any state. Any assignment, transfer, pledge,
      hypothecation or other disposition of the Option or any attempt to make
      any such levy of execution, attachment or other process not in accordance
      with the foregoing sentence shall cause the Option to terminate
      immediately upon the happening of any such event, and the Recipient shall
      lose all rights under this agreement, provided, however, that any such
      termination of the Option under the foregoing provisions of this Paragraph
      6, will not prejudice any rights or remedies which the Corporation may
      have under this Agreement or otherwise.

  8.  Death, Disability or Retirement of Recipient. The Recipient's rights to
      exercise this Option upon the death, disability or retirement of the
      Recipient are set forth as follows:

      (a) If the Recipient ceases to be in Service to the Corporation for a
          reason other than permanent disability or death, the Recipient must,
          within (2) months after the date of termination of such Service, but
          in no event after the Option's stated expiration date, exercise some
          or all of the Options that the Recipient was entitled to exercise on
          the date the Recipient's Service terminated. All options which have
          not vested in accordance with Section will thereafter be void for all
          purposes. If the Recipient ceases to be in Service to the Corporation
          by reason of permanent disability within the meaning of section
          22(e)(3) of the Internal Revenue Code (as determined by the Board of
          Directors), the Recipient will have two (2) months after the date of
          termination of Service, but in no event after the stated expiration
          date of the Recipient's Options, to exercise Options that the
          Recipient was entitled to exercise on the date the Recipient's Service
          terminated as a result of the disability.

      (b) If a Recipient dies while in the Corporation's Service, any Options
          that the Recipient was entitled to exercise on the date of death will
          be exercisable within the six-month period following the date of
          issuance of letters testamentary or letters of administration of a
          deceased Recipient, in the case of the Recipient's death during his
          Service to the Corporation's Board, but not later than one year after
          the Recipient's death or until the stated expiration date of the
          Recipient's Option, whichever occurs first, by the person or persons
          ("successors") to whom the Recipient's rights pass under a will or by
          the laws of descent and distribution. As soon as practicable after
          receipt by the Corporation of such notice and of payment in full of
          the Option Price, a certificate or certificates representing the
          Optioned Shares shall be registered in the name or names specified by
          the successors in the written notice of exercise and shall be
          delivered to the successors.

      (c) The term "Service" means service as an employee, as an independent
          contractor, or an employee of an independent contractor.

                                      -2-
<PAGE>   3

  9.  No Registration Obligation. The Recipient understands that the Option is
      not registered under the Securities Act of 1933, as amended (the
      "Securities Act") and the Corporation has no obligation to register under
      the Securities Act the Option or any of the shares of Common Stock subject
      to and issuable upon the exercise of the Option. The Recipient represents
      that the Option is being acquired by him for investment and acknowledges
      that all certificates for the shares issued upon exercise of the Option
      will bear the following legend unless such shares are registered under the
      Securities Act prior to their issuance:

                The shares of Common Stock evidenced by this certificate have
                been issued to the registered owner in reliance upon written
                representations that these shares have been purchased solely for
                investment. These shares may not be sold, transferred or
                assigned unless in the opinion of the Corporation and its legal
                counsel such sales, transfer or assignment will not be in
                violation of the Securities Act of 1933, as amended, and the
                rules and regulations thereunder.

      The Recipient further understands and agrees that the Option may be
      exercised only if at the time of such exercise the Recipient and the
      Corporation are able to establish the existence of an exemption from
      registration under the Securities Act and applicable state laws.

  10. Effect of Certain Changes.

      (a) If there is any change in the number of shares of outstanding Common
          Stock through the declaration of stock dividends, or through a
          recapitalization resulting in stock splits or combinations or
          exchanges of such shares, the number of shares of Common Stock
          available for Options and the number of such shares covered by
          outstanding Options, and the exercise price per share of the
          outstanding Options, shall be proportionately adjusted by the Board to
          reflect any increase or decrease in the number of issued shares of
          Common Stock: provided, however, that any fractional shares resulting
          from such adjustment shall be eliminated.

      (b) In the event of the proposed dissolution or liquidation of the
          Corporation, or any corporate separation or division, including, but
          not limited to, split-up, split-off or spin-off, or a merger or
          consolidation of the Corporation with another corporation, or any sale
          or transfer by the Corporation of all or substantially all its assets
          or any tender offer or exchange offer for or the acquisition, directly
          or indirectly, by any person or group for more than 50% of the then
          outstanding voting securities of the Corporation, the Board may
          provide that the Recipient shall have the right to exercise such
          Option (at its then current Option Price) solely for the kind and
          amount of shares of stock and other securities, property, cash or any
          combination thereof receivable upon such dissolution, liquidation,
          corporate separation or division, merger or consolidation, sale or
          transfer of assets or tender offer or exchange offer, by a Recipient
          of the number of shares of Common Stock for which such Option might
          have been exercised immediately prior to such dissolution,
          liquidation, corporate separation or division, or merger or
          consolidation: sales or transfer of assets or tender offer or exchange
          offer, or in the alternative the Board may provide that each Option
          granted herein shall terminate as of a date fixed by the Board:
          provided, however, that not less than 30 day's written notice of the
          date so fixed shall be given to the Recipient, who shall have the
          right, during the period of 30 days preceding such termination, to
          exercise the Option.

      (c) Paragraph (b) of this Section 10 shall not apply to a merger or
          consolidation in which the Corporation is the surviving corporation
          and shares of Common Stock are not converted into or exchanged for
          stock, securities of any other corporation, cash or any other thing of
          value. Notwithstanding the preceding sentence, in case of any
          consolidation or merger of another corporation into the Corporation in
          which the Corporation is the surviving corporation and in which there
          is a reclassification or change (including a change which results in
          the right to receive cash or other property) of the shares of Common
          Stock (other than a change in par value, or from no par value to par
          value, or as a result of a subdivision or combination, but including
          any change in such shares into two or more classes or series of
          shares), the Board may provide that the Recipient shall have the right
          to exercise such Option solely for the kind and amount of shares of
          stock and other securities (including those of any direct or indirect
          Parent of the Corporation), property, cash or any combination thereof
          receivable upon such reclassification, change

                                      -3-
<PAGE>   4

          consolidation or merger by the Recipient of the number of shares of
          Common Stock for which Option might have been exercised.

      (d) If there is a change in the Common Stock of the Corporation as
          presently constituted, which is limited to a change of all of its
          authorized shares with par value into the same number of shares with a
          different par value or without par value, the shares resulting from
          any such change shall be deemed to be the Common Stock within the
          meaning of this Stock Option Agreement.

      (e) To the extent that the foregoing adjustments relate to stock or
          securities of the Corporation, such adjustments shall be made by the
          Board.

      (f) Except as expressly provided in this Section 10, the Recipient shall
          have no rights by reason of any subdivision or consolidation of shares
          of stock of any class or the payment of any stock dividend or any
          other increase in the number of shares of stock of any class or by
          reason of any dissolution, liquidation, merger, or consolidation or
          split-up, split-off, or spin-off of assets or stock of another
          corporation; and any issue by the Corporation of shares of stock of
          any class, or securities convertible into shares of stock of any
          class, shall not effect, and no adjustment by reason thereof shall be
          made with respect to, the number or price of shares of Common Stock
          subject to this Option. The grant of this Option shall not affect in
          any way the right or power of the Corporation to make adjustments,
          reclassifications, reorganizations or changes of its capital or
          business structures or to merge or consolidate or to dissolve,
          liquidate or sell or transfer all or any part of its business or
          assets.

  11. Notices. Each notice relating to this Agreement will be in writing and
      delivered in person or by certified mail to the proper address. Notices to
      the Corporation shall be addressed to the Corporation c/o President, eSat,
      Inc., 16520 Harbor Blvd., Bldg, G, Fountain, Valley, CA 92708. Notices to
      the Recipient or other person or persons then entitled to exercise the
      Option shall be addressed to the Recipient or such other person or persons
      at the Recipient's address specified below. Anyone to whom a notice may be
      given under this Agreement may designate a new address by notice to that
      effect given pursuant to this Paragraph 11

  12. Approval of Consent. The exercise of the Option and the issuance and
      delivery of shares of Common Stock pursuant thereto shall be subject to
      approval by the Corporation's counsel of all legal matters in connection
      therewith, including compliance with the requirements of the Securities
      Act, the Securities Exchange Act of 1934, as amended, applicable state
      securities laws, the rules and regulations thereunder, and the
      requirements of any national securities exchange or association upon which
      the Common Stock than may be listed.

  13. Benefits of Agreement. This Agreement will inure to the benefit of and be
      binding upon each successor and assign of the Corporation. All obligations
      imposed upon the Recipient and all rights granted to the Corporation under
      this Agreement will be binding upon the Recipient" heirs, legal
      representatives and successors.

  14. Governmental and Other Regulations. The exercise of the Option and the
      Corporation's obligation to sell and deliver shares upon the exercise of
      rights to purchase shares is subject to all applicable federal and state
      laws, rules and regulations, and to such approvals by the regulatory or
      governmental agency which, in the opinion of counsel for the Corporation,
      may be required.

  15. Conditions to Exercise. The shares of stock deliverable upon the exercise
      of the Option, or any portion thereof, may be either previously authorized
      but unissued shares or issued shares which have then been reacquired by
      the Company. Such shares shall be fully paid and non-assessable. The
      Company shall not be required to issue or deliver any certificate or
      certificates for shares of stock purchased upon the exercise of the Option
      or portion thereof prior to fulfillment of all of the following
      conditions:

        (i)    The admission of such shares to listing on all stock exchanges,
               if any, on which such class of stock is then listed;

        (ii)   The completion of any registration or other qualification of such
               shares under any state or federal law or under the rulings or
               regulations of the Securities and Exchange Commission or any
               other

                                      -4-
<PAGE>   5

               governmental regulatory body, which the Corporation shall,
               in its absolute discretion, deem necessary or advisable;

        (iii)  The obtaining of any approval or other clearance from any state
               or federal governmental agency which the Corporation shall, in
               its absolute discretion, determine to be necessary or advisable;

        (iv)   The payment to the Company of all amounts which it is required to
               withhold under federal, state or local law in connection with the
               exercise of the Option; and

        (v)    The lapse of such reasonable period of time following the
               exercise of the Option as the Corporation may from time to time
               establish for reasons of administrative convenience.

        This Stock Option Agreement is executed in the name and on behalf of the
  Corporation by one of its duly authorized officers and by the Recipient all as
  of the date first above written.

                                   ESAT, INC.

                         By /s/ [Signature Illegible]
                           ---------------------------

        The undersigned Recipient understands the terms of this Option
  Agreement. The undersigned agrees to comply with the terms and conditions of
  this Option Agreement.

Date 3/24/     , 2000                 Signature: /s/ STEVEN A. TULK
    ----------                                  --------------------------------
                                      Printed Name:  STEVEN A. TULK
                                                   -----------------------------
                                      Tax ID # (SSN):  568 19 5189
                                                     ---------------------------
                                      Address:  1127 WINDBROOKE DR., #201
                                              ---------------------------------
                                                BUFFALO GROVE, IL 60089
                                              ---------------------------------

                                      -5-

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