<PAGE>



	"This is a legally binding Contract; if not understood seek advice from
                                  an attorney."

                     COMMERCIAL/INDUSTRIAL LEASE (NET)


THIS LEASE is entered into by and between Landlord and Tenant and upon approval
by both Landlord and Tenant, as evidenced by their signature hereto, a valid
and binding Lease shall exist, the terms and conditions of which are as
follows:

1.   DEFINITIONS AND BASIC PROVISIONS.  The following definitions and basic
provisions shall be construed as follows when used elsewhere in this
Lease:

      a)  Effective Date:  The Effective Date shall be the latest date for
          approval by all parties as indicated below.

      b)  Landlord:     CHYMIAK INVESTMENTS, L.L.C.
          c/o    Ken Chymiak
          Address    5411 E. 80th St., Tulsa, OK 74136
          Phone No.    918-492-3023               Fax No.    918-496-4182

      c)  Tenant:     D.R.K. ENTERPRISES, INC. d/b/a TULSAT
          c/o    David Chymiak
          Address    1605 E. Iola, Broken Arrow, OK 74012
          Phone No.    918-251-2887               Fax No.    918-251-1138

      d)  Third Party Guarantor:            Guarantor Agreement attached hereto
                                            as Exhibit
          c/o
          Address
          Phone No.                          Fax No.

      e)  Leased Premises:  Approximately  67,000 square feet, Suite No.___  in
      the building located at    1605 E. Iola, Broken Arrow, Oklahoma in
      Tulsa County, Oklahoma, such premises being shown and outlined on the
      plan attached hereto as Exhibit _____.               .

      f)  Project:


      g)  Lease Term:  A period of  5 Years  commencing on October 1, 1999
      ("Commencement Date") and ending on    September 30, 2004 ("Expiration
      Date").

      h)  Base Rental:  A total of $ 180,000 per yr.  payable in monthly
      installments in advance as follows:

                            From                  To             Monthly Rate

          Year   1    October 1, 1999      September 30, 2000       $15,000

          Year   2    October 1, 2000      September 30, 2001       $15,000

          Year   3    October 1, 2001      September 30, 2002       $15,000

          Year   4    October 1, 2002      September 30, 2003       $15,000

          Year   5    October 1, 2003      September 30, 2004       $15,000

      i)   Prepaid Rental:  $   0   representing payment of rental for the
      first month of the Lease Term.

      j)   Security Deposit:  $   0         (not applicable toward last month's
      rent)

      k)   Use: ________________   Tenant, as evidenced by his signature below,
      has determined and represents that the stated use is consistent with
      all local, State and Federal regulations applicable to said use.

      l)   Legal Use:  Tenant shall use the Leased Premises only for the
      Permitted Use stated and for no other purposes.  Tenant shall not use,
      nor permit the use of, anything in the Leased Premises (i) which would
      violate any of the agreement of the Lease, (ii) for any unlawful
      purpose or in any unlawful manner, or (iii) that would substantially
      increase cost of the Landlord's insurance.

      m)   Tenant's Public Liability Insurance Limits:  $   1,000,000 combined
      single limit bodily injury and property damage as described in
      paragraph 7(c).

      n)   Cost of Living Increases:  See attached Exhibit    na , if any.

      o)   Percentage Rental:  See attached Exhibit    na  , if any.

      p)   Property Owner's Association's Dues and Assessments:  See attached
      Exhibit    na         if any.

2.   GRANTING CLAUSE.  Landlord hereby covenants and warrants that it has
rightful possession to, and hereby leases, lets and demises unto Tenant,
together with all improvements, appurtenances, easements, and privileges
thereunto belonging, the Leased Premises for the Permitted Use, together
with on-site parking, if any.

3.   PAYMENT OF RENT/ADDITIONAL RENT.  Tenant agrees to pay to Landlord
the total minimum base rental, with such monthly installments to be paid
in advance, on or before the first day of each calendar month during the term,
without demand.  Tenant shall pay the first monthly installment as "prepaid-
rental" concurrently with the execution of this Lease.  The rent for a portion
of the calendar month during which rent might begin to accrue or terminate
shall be prorated.  Tenant's covenant to pay rent shall be independent of
every other covenant set forth in this Lease, and Tenant shall have no right
of deduction or setoff whatever.  All rents herein provided for shall be paid
to Landlord at the Landlord's address or at such other place as shall be
designated by Landlord, in writing, furnished to Tenant at least ten (10) days
prior to the next ensuing rent payment due date.

Standard Commercial/Industrial Lease (net) (a705)6/98      /s/ DEC     /s/ KAC
Copyright 1998 - Greater Tulsa Association of REALTORS(r)
All Rights Reserved                                           Tenant   Landlord
                                                                  Page 1 of 4

<PAGE>

4.    LATE PAYMENT OF RENT.  Any rents received on the 11th day after the due
date, or thereafter, shall be assessed the maximum late fee amount allowable
by law.

5.    GENERAL PROVISIONS.

      a)  Possession.  Unless otherwise agreed to in writing, possession shall
      be delivered on the Commencement Date of this Lease.  If Landlord is
      unable to deliver possession of the premises at the commencement hereof,
      Landlord shall not be liable for any damage caused thereby, nor shall
      this lease be void or voidable, but Tenant shall not be liable for any
      rent until possession is delivered.  Tenant may terminate this lease if
      possession is not delivered within    10    days.

      b)    Assignment, Subletting, and Encumbering.  This Lease shall not be
      assigned, sublet, or transferred by Tenant without Landlord's prior
      written consent.  Tenant shall not sublet, or offer or advertise for
      subletting, the Leased Premises, or any portion thereof, without the
      prior written consent of Landlord.  Any assignment or subletting shall
      not relieve Tenant of its obligations hereunder or release Tenant from
      the further performance of all covenants herein contained.

      c)    Estoppel Certificate.  Tenant shall, at any time so requested,
      execute and deliver to Landlord such Estoppel certificates as Landlord
      shall reasonably require, stating length of Tenant's lease, amount of
      rent, deposits, and other terms.

      d)    Subordination.  This Lease shall be subject and subordinate, at all
      times, to the lien of existing mortgages and of mortgages which hereafter
      may be made on the Leased Premises.  Tenant will execute and deliver such
      further instruments subordinating this Lease to the lien of any such
      mortgages as may be desired by Landlord.

      e)    Rules and Regulations.  Tenant agrees to observe and comply with the
      Rules and Regulations presently existing and such other and further
      reasonable rules and regulations as Landlord may, from time to time,
      adopt, a copy of which is attached to this Lease as Exhibit   .

      f)    Toxic or Hazardous Materials.  Tenant shall not store, use, or
      dispose of any toxic or hazardous materials in, on, or about the Premises,
      without the prior written consent of Landlord.  Tenant, at its sole cost,
      will comply with all laws relating to Tenant's storage, use, and disposal
      of hazardous or toxic materials.

      g)    Holding Over.  In the event Tenant remains in possession of the
      Premises after the expiration or termination of the Lease, Tenant shall
      occupy the premises as a Tenant from month-to-month at 150% of the rental
      due for the last full calendar month during the term of the Lease and
      subject to all other provisions and obligations of the Lease applicable
      to a month-to-month tenancy.

      h)    Signs.  Landlord retains the right to approve any and all exterior
      signs.  See attached Exhibit ____.  "Sign Criteria", if any.

      i)    Destruction of Premises.  In the event of a partial destruction of
      the building in which the Leased Premises are contained, during the term,
      Landlord shall make any repairs that can be made under existing
      governmental regulations within one hundred twenty (120) days of such
      destruction, but such partial destruction shall not terminate this Lease,
      except that Tenant shall be entitled to a proportionate reduction of rent
      while repairs are being made, based upon the extent to which the making
      of such repairs shall interfere with the business of Tenant on the
      Premises.  If repairs cannot be made within one hundred twenty (120)
      days, this Lease may be terminated, at the option of either party, by
      delivering written notice.

      j)    Right of Entry.  Landlord reserves the right, for itself, and its
      employees, or contractors, and Tenant covenants to permit Landlord, or
      its agents, employees, or contractors to enter any and all portions of the
      Leased Premises at any time; provided, that Landlord shall give Tenant
      reasonable notice prior to any entry for the purpose of showing the space
      to prospective tenants.

            During the progress of any repairs or other work, Landlord may keep
      and store on the Leased Premises all necessary materials, tools, and
      equipment, and Landlord shall, in no event, be liable for disturbance,
      inconvenience, annoyance, loss of business, or other damage to Tenant, or
      any assignee, or sublessee under the Lease, by making such repairs or
      performing any such work on or in the Leased Premises, or due to bringing
      materials, supplies, and equipment into or through the Premises during the
      course of such work.

            tenant shall permit Landlord at any time within sixty (60) days
      prior to expiration of this lease to place upon the premises the usual
      "For Lease" or "For Sale" signs, and permit persons desiring to lease or
      purchase the same to inspect the premises thereafter.

      k)    Condemnation.  If the Leased Premises is totally condemned by any
      lawful authority under the power of eminent domain, or shall, during the
      continuance of the Lease, be totally destroyed by the action of public
      authorities, then this Lease and the term leased shall terminate, and
      Tenant shall be liable for rent only up to the date of such termination.

      l)    Quiet Enjoyment.  Landlord grants to Tenant, in exchange for
      continued payment of rent and performance of each and every covenant
      hereof, the right to peacefully and quietly hold, occupy, and enjoy the
      Leased Premises throughout the term.  Further, Tenant shall not commit
      any waste upon the premises, or any nuisance or act which may disturb
      the quiet enjoyment of any tenant in the building.

6.    MAINTENANCE.

      a)      Tenant.  Tenant shall maintain and make necessary replacement of
      the roof, exterior walls, structure, floor slabs, parking lot, other
      common facilities of the building and provide lawn and landscaping
      maintenance.  Tenant shall keep the Leased Premises neat and clean and in
      such repair, order, and condition as received on Commencement Date (or
      Occupancy Date, whichever is earliest) or may be put in during the term
      hereof, reasonable use and wear excepted.  Tenant shall maintain
      (including necessary replacement) all fixtures and equipment relating to
      plumbing, electrical, heating, ventilation, air conditioning (HVAC).
      Tenant shall maintain and replace exterior doors, windows, and all plate
      glass, floor covering, carpet, paint, wallpaper, and other coverings.
      Tenant shall not damage or abuse the Leased Premises, nor shall Tenant
      permit the damage or abuse of the Leased Premises.  Tenant shall not
      overload the floor and shall abide by Landlord's instructions with
      respect to care and avoidance of abuse.


      b)      Utilities.  Tenant shall be responsible for arranging, and
      contracting in its own name if necessary, all utility services necessary
      for the operation of the Property, including establishment of any
      required deposits, and payment of any and all utility charges incurred
      during the term.  Such utility charges shall include water, natural gas,
      telephone, cable television, sanitary sewer, electricity and storm water
      management fees.  Tenant shall also be responsible for the maintenance of


Standard Commercial/Industrial Lease (net) (a705)6/98      /s/ DEC     /s/ KAC
Copyright 1998 - Greater Tulsa Association of REALTORS(r)
All Rights Reserved                                           Tenant   Landlord
                                                                  Page 2 of 4

<PAGE>


      any on-site sewage disposal system (septic tank, etc.).  Further, in the
      event of any interruption of utility services, the Landlord shall neither
      be responsible for, nor shall any rent be abated due to, such
      interruption.

7.    TAXES, INDEMNITY AND INSURANCE.

      a)      Taxes.  Tenant shall reimburse Landlord for all ad valorem taxes,
      special assessments, and bond indentures, attributable to the Leased
      Premises upon presentation of paid tax receipts by Landlord to Tenant.

      If taxes because of increased rate or valuation and/or other public
      assessments increase during the term of lease, a proportionate share
      of such increase shall be paid by Tenant, or if single Tenant, Tenant
      shall pay total increase.  Taxes and other public assessments for the
      calendar year in which the lease commences and in which the lease
      expires shall be prorated to the date of such commencement and
      termination.

      b)      Indemnity, Liability, and Loss or Damage.  Tenant agrees to
      defend, indemnify, and hold Landlord harmless from any loss, cost, or
      expense, whatsoever, resulting from (1) personal injury, loss of life,
      or loss of property relating to the use and occupancy by Tenant, or (2)
      from damage to, or destruction of, the Project structure, or any part
      thereof, or of any abutting real property caused by, or attributable to,
      the negligent act or acts, or omission or omissions to act, of Tenant, or
      caused by, or attributable to, the Tenant's failure to perform its
      obligations under this Lease.  Likewise, Landlord agrees to defend,
      indemnify, and hold Tenant harmless from any loss, whatsoever, resulting
      from personal injury, loss of life or property relating to the use of
      Landlord and use and occupancy by other Tenants, or caused by, or
      attributable to, the negligent act or acts, omission or omissions to act,
      of Landlord, or caused by, or attributable to, Landlord's failure to
      perform its obligations under this Lease.

      c)      Tenant's Insurance.  Tenant agrees to insure the Leased Premises
      for fire, casualty, and public liability.  Tenant shall procure, keep in
      force, and pay for such fire, casualty, and comprehensive public
      liability insurance, in amounts reasonably required by Landlord, with
      reputable, responsible, licensed companies, indemnifying Landlord and
      Tenant against all claims and demands for injury to, or death of,
      persons, or damage to property, which may be claimed to have occurred on
      the Leased Premises.  Certificates of the same, naming Landlord as
      additional insured, shall be provided to the Landlord.  Further, Tenant
      shall insure all of Tenant's contents.

8.    LANDLORD'S LIEN.  In consideration of the mutual benefits arising under
this Lease, Tenant hereby grants to landlord a lien and security interest in
and on all property Tenant now, or hereafter, may place in or upon the
Premises, and the property shall be, and remain, subject to such lien and
security interest of Landlord for payment of all rental and other sums agreed
to be paid by Tenant.  The lien and security interest shall be in addition to
and cumulative of the Landlord's liens existing or to exist under statute, in
law, or in equity, none of which are waived by Landlord.  The provisions of
this paragraph relating to the lien and security interest shall constitute a
Security Agreement under the Uniform Commercial Code, so that Landlord shall
have, and may enforce, a security interest on all property of Tenant now, or
hereafter, placed in or on the Premises, including, but not limited to, all
fixtures, machinery, equipment, furnishings, and other articles of personal
property now, or hereafter, placed in or upon the Premises by Tenant.  Landlord
may, at its election at any time, file a copy or memorandum of this Lease as
a financing statement.  Landlord, as secured party, shall be entitled to all
rights and remedies afforded a secured party under the Uniform Commercial Code,
which rights and remedies shall be in addition to and cumulative of the
Landlord's liens and rights provided by law, or by the other terms and
provisions of this Lease.

9.	ADDITIONS AND ALTERATIONS.  Tenant shall not make any additions,
alterations or improvements to the Leased Premises without the prior written
consent of the Landlord.  At Landlord's option, any and all additions,
alterations and improvements to the Leased Premises, including built-ins,
shall belong to the Landlord.

10.	BREACH AND DEFAULT.  This Lease may be deemed by landlord as being in
    default if any of the following occur:

      a)      Tenant fails to make any payment of rent, or any other amount
      due, and such failure continues for fifteen (15) days after the payment
      due date;

      b)      Tenant fails to keep in force insurance as required by Paragraph
      7(c) of the Lease and such failure continues for ten (10) days after
      written notice to Tenant;

      c)      Tenant materially breaches any other covenant and the same shall
      not have been cured within ten (10) days after notice thereof by Landlord;


      d)      Tenant files any voluntary petition in bankruptcy, or for
      corporate reorganization, or any similar relief, or if any involuntary
      petition in bankruptcy shall be filed against the Tenant;

      e)      A receiver is appointed for Tenant or Tenant's property by any
      Court;

      f)      Tenant makes an assignment for benefit of creditors;

      g)      Tenant abandons or vacates the Leased Premises during the term
      hereof;

      h)      Tenant fails to operate its business in material compliance with
      all applicable laws;

      i)      Tenant transfers a portion, or all, of its assets to another
      entity or individual without written notification and consent of the
      Landlord.

11.	LANDLORD'S REMEDIES.  Upon the occurrence of any event of default by
Tenant, and the failure by Tenant to remedy such default within the time
permitted by Landlord, Tenant hereby grants the Landlord the following rights:


      a)      To change the locks, exclude Tenant from the Leased Premises,
      re-enter Leased Premises and enforce security against Tenant's entry.


      b)      To relet Leased Premises and recover cost of alterations and
      damages.  Upon any reletting, Tenant shall be immediately liable to pay
      to Landlord, without further demand or process of law, the cost and
      expense of reletting, including, without limitation, any brokerage fees,
      the cost of any alterations and repairs deemed necessary by Landlord to
      effect reletting, and the full amount, if any, by which the rental
      reserved in this Lease for the period of reletting (but not beyond the


Standard Commercial/Industrial Lease (net) (a705)6/98      /s/ DEC     /s/ KAC
Copyright 1998 - Greater Tulsa Association of REALTORS(r)
All Rights Reserved                                           Tenant   Landlord
                                                                  Page 3 of 4


      terms of this Lease) exceeds the amount agreed to be paid as rent for the
      Premises for the period of reletting.  If Tenant has been credited with
      any rent to be received by reletting and the rent shall not be promptly
      paid to Landlord by the new tenant, Tenant shall immediately be liable to
      pay the deficiency to Landlord.  If the Landlord elects to terminate this
      Lease, Landlord may recover from Tenant all damages Landlord may incur by
      reason of Tenant's failure to pay rental, including the cost of recovering
      the Premises, and including the excess of the rental reserved in this
      Lease for the remainder of the stated term over the then reasonable rental
      value of the Premises for the remainder of the term, all of which amount
      shall be immediately due and payable by Tenant to Landlord.  Landlord
      shall be under no obligation to attempt to re-lease the Leased Premises
      before it leases its other properties.

      c)      To remove, store, and dispose of Tenant's property.  Any property
      belonging to Tenant, or to any person holding by, through, or under
      Tenant, or otherwise found upon the Premises at the time of re-entry or
      termination by the Landlord, may be removed and stored in any warehouse,
      at the cost of, and for the account of, Tenant, or, in Landlord's sole
      discretion, deemed to be abandoned by Tenant and disposed of accordingly.

      d)      Additional Remedies.  In the event of any breach or threatened
      breach by Tenant of any covenants, agreements, terms, or conditions of
      this Lease, Landlord shall be entitled to enjoin the breach or threatened
      breach, and in addition to the rights and remedies provided hereunder,
      shall have any other right or remedy allowed at law or equity, by
      statute, or otherwise.  The provisions of this Section shall be construed
      consistent with the laws of the State of Oklahoma, so that remedies of
      Landlord herein described shall be available to Landlord to the full
      extent, but only to the extent that they are valid or enforceable under
      the laws of the State of Oklahoma.

      e)      To Recover Attorney's Fees.  If suit shall be brought for
      recovery of possession of the Premises, for the recovery of rental, or
      any other amount due under the provisions of this Lease, or because of the
      breach of any other covenant herein contained on the part of either party
      to be kept or performed, and a breach shall be established, the
      non-prevailing party shall pay to the prevailing party all expenses
      incurred, including a reasonable attorney's fee.  The prevailing party
      shall be determined by the Court which shall also approve the amount of
      reimbursed expenses.

      The foregoing rights and remedies given to Landlord are, and shall be,
deemed to be cumulative and the exercise of any of them shall not be deemed to
be an election excluding the exercise by the Landlord, at any time, of a
different or inconsistent remedy, and shall be deemed to be given to Landlord
in addition to any other right and further rights granted to the Landlord by
the terms hereof, or by law.  The failure of Landlord at any time to exercise
any right or remedy herein granted or established by law shall not be deemed
to operate as a waiver of its right to exercise such right or remedy at any
other future time.

12.   EFFECT AND SEVERABILITY.  This Lease shall be executed in duplicate
originals and, when executed by both Landlord and Tenant, shall be binding upon
and inure to the benefit of Landlord and Tenant, their heirs, legal
epresentatives,successors, and assigns.  This Lease sets forth the complete
understanding of Landlord and Tenant and supersedes all previous negotiations,
representations, and agreements between them and their agents.  This Lease can
only be amended or modified by a written agreement signed by Landlord and
Tenant.

      Should any clause or provision of this Agreement be adjudged, or otherwise
rendered, unenforceable, all provisions not so affected shall remain in full
force and effect.  In the event of any transfer of title or interest of the
Leased Premises, the Landlord named herein shall be relieved of all liability
related to Landlord's obligations to be performed after such transfer.
Provided, however, that any funds in the hands of Landlord at the time of
such transfer shall be delivered to Landlord's Grantee.  Landlord's obligations
hereunder shall be binding upon Landlord's successors and assigns only during
their respective periods of ownership.

13.     EXHIBITS.  Exhibits  na  through  na  are attached to, and by reference
made a part of, this Lease.


14 & 15 omitted.

16.     SPECIAL CONDITIONS.     __________________________

17.	RECEIPT.  By execution of this Lease, Landlord acknowledges receipt of
Prepaid Rent and Security Deposit.

18.	SECURITY DEPOSIT.  The Security Deposit set forth in paragraph 1(j) of
this Lease, if any, shall secure the performance of the Tenant's obligations
hereunder.  Landlord may, but shall not be obligated to apply all or portions
of said deposit on account of Tenant's obligations hereunder.  Any balance
remaining upon termination shall be returned to Tenant.  Tenant shall not have
the right to apply the Security Deposit in payment of the last month's rent.




APPROVED AND AGREED TO BY TENANT:         APPROVED AND AGREED TO BY LANDLORD:

This 15th day of September 1999,          This 15th day of September 1999,
DRK ENTERPRISES, INC. d/b/a TULSAT        CHYMIAK INVESTMENTS, L.L.C.
/s/ David E. Chymiak,  President          /s/ Kenneth A. Chymiak, Managing
                                          Partner


ATTEST: /s/ Denise Thompson               ATTEST:  /s/ Denise Thompson

This         day of                       This         day of



By                                        By
      (Associate)                                 (Associate)



Standard Commercial/Industrial Lease (net) (a705)6/98      /s/ DEC     /s/ KAC
Copyright 1998 - Greater Tulsa Association of REALTORS(r)
All Rights Reserved                                           Tenant   Landlord
                                                                  Page 4 of 4

</PAGE>