The portions of this Exhibit for which confidential treatment has been requested
are marked by brackets ([ ]). In addition,  an asterisk (*) appears in the right
hand margin of each  paragraph in which  confidential  information  is included.


                          TT&C EARTH STATION AGREEMENT




                                     between




                            ORION ASIA PACIFIC CORP.



                                       and



                                   DACOM CORP.







                            Dated: November 11, 1996








                                Table of Contents
                                -----------------


                                                                                                          Page
                                                                                                     
ARTICLE 1.           FUNCTIONS TO BE PERFORMED BY THE TT&C
                     EARTH STATION.................................................................           1


         1.1.        Purpose of the TT&C Earth Station  ...........................................           1
         1.2.        Particular Functions of the TT&C Earth Station  ..............................           1
         1.3.        Future Modification of Functions  ............................................           1

ARTICLE 2.           SITE SELECTION   .............................................................           2

         2.1.        Site Selection  ..............................................................           2
         2.2.        Government Approvals  ........................................................           2
         2.3.        Land Acquisition  ............................................................           2
         2.4.        Termination if Steps Not Taken  ..............................................           2

ARTICLE 3.           CONSTRUCTION; ANTENNA   ......................................................           2

         3.1.        General  .....................................................................           2
         3.2.        The Antenna  .................................................................           3

ARTICLE 4.           TT&C EQUIPMENT   .............................................................           3

         4.1.        Supply of TT&C Equipment  ....................................................           3
         4.2.        Shipments; Duties  ...........................................................           3
         4.3.        Spares, Tooling, Supplies, etc.  .............................................           4
         4.4.        Title to TT&C Equipment  .....................................................           4

ARTICLE 5.           TESTING   ....................................................................           4

         5.1.        TT&C Equipment Testing and Acceptance  .......................................           4
         5.2.        Antenna Testing and Acceptance  ..............................................           4
         5.3.        TT&C Earth Station Testing and Acceptance  ...................................           5
         5.4.        Periodic Testing  ............................................................           5

ARTICLE 6.           PERSONNEL   ..................................................................           5

         6.1.        DACOM Personnel  .............................................................           5
         6.2.        Training  ....................................................................           6
         6.3.        Initial Advisory Supervision and On-Site Training  ...........................           6
         6.4.        Confidentiality Agreements  ..................................................           6

ARTICLE 7.           OPERATION OF THE TT&C EARTH STATION   ........................................           6

         7.1.        Operations  ..................................................................           6
         7.2.        Personnel; Utilities and Supplies; Security; etc.  ...........................           7
         7.3.        Maintenance and Repair  ......................................................           7
         7.4.        Destruction of the TT&C Earth Station  .......................................           8

                                       i





ARTICLE 8.           REPORTS AND DOCUMENTATION   ..................................................           8

         8.1.        Summaries  ...................................................................           8
         8.2.        Logs  ........................................................................           9
         8.3.        Regular Periodic Reports  ....................................................           9
         8.4.        Special Reports of Anomalous Events  .........................................           9
         8.5.        Format of Logs and Reports  ..................................................           9

ARTICLE 9.           CHARGES; PAYMENTS    .........................................................           9

         9.1.        Charges  .....................................................................           9
         9.2.        Payments, Taxes and Bank Charges   ...........................................          10
         9.3.        Time of Payment  .............................................................          10
         9.4.        Interest  ....................................................................          11

ARTICLE 10.          TERM; TERMINATION   ..........................................................          11

         10.1.       Term  ........................................................................          11
         10.2.       Termination  .................................................................          11
         10.3.       Payment of Charges  ..........................................................          11
         10.4.       Certain Provisions Survive Termination  ......................................          11
         10.5.       Option to Purchase or Lease the Site and the TT&C
                     Earth Station upon Termination  ..............................................          12
         10.6.       Subsequent Modification or Expansion  ........................................          12

ARTICLE 11.          FORCE MAJEURE   ..............................................................          12

ARTICLE 12.          GOVERNMENTAL APPROVALS   .....................................................          13

         12.1.       Korean Government Approvals  .................................................          13
         12.2.       United States Government Approvals  ..........................................          13

ARTICLE 13.          RISK   .......................................................................          13

         13.1.       Risk of Loss  ................................................................          13
         13.2.       Insurance  ...................................................................          13

ARTICLE 14.          INDEMNIFICATION; DAMAGES   ...................................................          14

         14.1.       Indemnification  .............................................................          14
         14.2.       Consequential Damages  .......................................................          14
         14.3.       Procedure for Indemnification  ...............................................          14

ARTICLE 15.          CONFIDENTIALITY   ............................................................          15

         15.1.       Confidentiality  .............................................................          15
         15.2.       Confidentiality Agreements  ..................................................          15

ARTICLE 16.          ASSIGNMENT   .................................................................          16

         16.1.       Succession and Assignment  ...................................................          16
         16.2.       Change of Control  ...........................................................          16


                                       ii


ARTICLE 17.          REPRESENTATIONS AND WARRANTIES OF ORION   ....................................          16

         17.1.       Representation and Warranties  ...............................................          16
         17.2.       Exclusion of Warranties  .....................................................          17

ARTICLE 18.          REPRESENTATIONS AND WARRANTIES OF DACOM  .....................................          17

         18.1.       Incorporation, Power, etc.  ..................................................          17
         18.2.       Due Authorization of Agreement; No Conflict with
                     Other Instruments  ...........................................................          17
         18.3.       Government Regulation  .......................................................          17
         18.4.       Exclusion of Warranties  .....................................................          17


ARTICLE 19.          MISCELLANEOUS   ..............................................................          18

         19.1.       Further Assurances  ..........................................................          18
         19.2.       Taxes and Expenses  ..........................................................          18
         19.3.       Press Releases and Public Announcements  .....................................          18
         19.4.       Notices  .....................................................................          18
         19.5.       No Third-Party Beneficiaries  ................................................          19
         19.6.       Governing Law; Arbitration  ..................................................          19
         19.7.       Amendments and Waivers  ......................................................          19
         19.8.       Matters of Construction, Interpretation and the Like  ........................          20

ARTICLE 20.          DEFINITIONS   ................................................................          20



EXHIBIT A            FUNCTIONS TO BE PERFORMED BY THE TT&C EARTH STATION

EXHIBIT B            CONSTRUCTION SPECIFICATIONS FOR THE TT&C EARTH STATION

EXHIBIT C1            ANTENNA SPECIFICATIONS

EXHIBIT C2           RF/IF REQUIREMENTS INCLUDING TEST TRANSLATOR

EXHIBIT D            TT&C EQUIPMENT

EXHIBIT E            TESTING

EXHIBIT F            INITIAL JOB SPECIFICATIONS, NUMBER OF PERSONNEL AND QUALIFICATIONS

EXHIBIT G            FORM OF CONFIDENTIALITY AGREEMENT

EXHIBIT H            CONSTRUCTION CHARGES



                                      iii

                          TT&C EARTH STATION AGREEMENT
                          ----------------------------

   
                  This TT&C EARTH  STATION  AGREEMENT,  dated as of November 11,
1996 by and between  ORION ASIA  PACIFIC  CORP.,  a  corporation  organized  and
existing  under the laws of  Delaware,  U.S.A.  ("Orion"),  and DACOM  CORP.,  a
corporation organized and existing under the laws of Korea ("DACOM"),
    

                              W I T N E S S E T H:

                  WHEREAS,  Orion  intends to  establish in Korea a facility for
the  transmission  of  tracking  telemetry  and  command  signals to the Orion 3
Satellite  ("Orion  3")  and  under  certain  circumstances,  to  a  replacement
satellite and/or a successor satellite (collectively, the "Satellite"); and

                  WHEREAS, DACOM wishes to establish and operate in Korea one of
the facilities for the transmission to the Satellite of tracking,  telemetry and
command  signals  generated  by Orion (the "TT&C Earth  Station"),  and Orion is
willing to have the backup TT&C Earth  Station  located in Korea and operated by
DACOM, upon the terms and conditions contained in this Agreement.

                  Certain terms used herein are defined in Article 20.

                  NOW,  THEREFORE,  in  consideration  of  the  foregoing,   and
intending to be legally bound, the parties hereto agree as follows:

                                   ARTICLE 1.

               FUNCTIONS TO BE PERFORMED BY THE TT&C EARTH STATION
               ---------------------------------------------------

   
         1.1. Purpose of the TT&C Earth Station. The TT&C Earth Station is to be
constructed and operated pursuant to this Agreement to transmit to the Satellite
and receive from the Satellite  electronic  signals for the tracking,  telemetry
and  command  ("TT&C")  of the  Satellite,  including  stationkeeping,  attitude
control and other  satellite  maintenance  and  switching  functions as shall be
necessary to operate the  Satellite  and the  transponders  and other  equipment
thereon as contemplated by the Joint Investment  Agreement and the various other
agreements  with  users of the  Satellite  and of such  transponders  and  other
equipment, and to receive signals from the Satellite relating to the Satellite's
condition and  operations.  The TT&C Earth Station is to be operational for such
purpose on a twenty-four hours per day, seven days per week, fifty-two weeks per
year  basis  from the TT&C  Acceptance  Date  until  the end of the Term of this
Agreement.
    

         1.2.  Particular  Functions  of the  TT&C  Earth  Station.  On the TT&C
Acceptance  Date,  the TT&C Earth Station and the  personnel  operating the TT&C
Earth  Station,  including CSM  Operations,  are to be capable of performing the
functions  summarized  in Exhibit A hereto,  in  accordance  with the  standards
contained therein.

         1.3. Future  Modification of Functions.  Orion and DACOM recognize that
during the Term of this  Agreement,  it may become  necessary or  appropriate to
modify or supplement  the  functions  summarized in Exhibit A hereto in order to
take account of changed  conditions or new  technology.  If Orion concludes that
such a modification  or  supplementation  has become  necessary or  appropriate,
Orion  shall  so  notify  DACOM  at least 60 days  before  the  date  when  such
modification  or  supplementation  is to be  implemented.  Orion and DACOM shall
cooperate in effecting each such modification or





supplementation,  upon the terms  provided in this  Agreement  for the  original
construction,  equipping and operation of the TT&C Earth  Station,  or upon such
other terms as Orion and DACOM may agree.


                                   ARTICLE 2.

                                 SITE SELECTION
                                 --------------

         2.1.  Site  Selection.  The TT&C Earth Station shall be located at such
place in ______ as shall be selected by DACOM, after consultation with Orion and
with  Orion's  consent,   which  shall  not  be  unreasonably  withheld.  It  is
anticipated  that the site will be co-located with other similar DACOM satellite
operations.  Orion's  consent shall be based upon technical  factors such as the
quality of the  signals  to be  received  by the  Satellite  from the Site,  the
availability of support  services at the Site (such as reliable  uninterruptible
primary and backup  electric power,  water,  heat,  waste  disposal,  personnel,
security  services  and the like),  the  availability  of adequate  and reliable
communications   and   transportation  to  and  from  the  Site,   freedom  from
electromagnetic interference, and similar factors. Initial selection of the Site
shall be made by DACOM as soon as  practicable  after  execution and delivery of
this Agreement.

         2.2. Governmental  Approvals.  DACOM shall be responsible for obtaining
all necessary  governmental approvals from the government of _____, and from all
other Governmental Bodies within Korea having jurisdiction,  with respect to all
aspects of the selection of the Site, the purchase or lease of real estate,  the
construction  and equipping of the TT&C Earth Station,  and the operation of the
TT&C Earth Station, pursuant to this Agreement.

         2.3. Land Acquisition.  DACOM shall either purchase or lease sufficient
land for the  construction  and operation of the TT&C Earth Station  pursuant to
this Agreement;  provided,  however, that the total purchase price for such land
or the aggregate  lease  payments for the entire term of the lease,  as the case
may be,  shall not exceed  ________________________________________________.  If
the land is  purchased or leased by DACOM,  DACOM shall make the land  available
for uses contemplated herein and for the Term of this Agreement.

         2.4.  Termination if Steps Not Taken. If by June 30, 1997, (i) the Site
has not been  selected by DACOM and  consented  to by Orion  pursuant to Section
2.1,  or (ii) the land for the TT&C  Earth  Station  has not been  purchased  or
leased  pursuant to Section 2.3, then Orion may terminate  this  Agreement  upon
notice to DACOM given not more than 60 days after June 30, 1997.

                                   ARTICLE 3.

                              CONSTRUCTION; ANTENNA
                              ---------------------

         3.1. General. As soon as practicable after full compliance with Article
2, DACOM shall cause the Site to be prepared for  construction  and operation of
the TT&C  Earth  Station  (including  ground  preparation  and  construction  of
foundations  for the  Antenna  and the other TT&C  Equipment),  shall  cause the
buildings  to be located on the Site to be  constructed,  erected,  equipped and
supplied with all necessary  utilities and other  services,  and shall cause all
equipment (except equipment to be supplied by Orion pursuant to Article 4) to be
constructed and installed at the Site, all in accordance  with the  Construction
Specifications attached hereto as Exhibit B, and all at

                                      -2-




the expense of DACOM  except as provided  in Section  3.2.  Orion shall have the
right,  upon its  request  to  DACOM,  to  inspect  all  civil,  mechanical  and
electrical engineering and construction contracts, and all other contracts, with
third parties relating to such  construction,  erection,  equipping,  supply and
installation,  as well as all site  layout  plans and  detailed  mechanical  and
electrical drawings related to the TT&C Earth Station. If such contracts,  plans
and drawings are not reasonably  satisfactory  to Orion,  DACOM shall cause such
contracts, plans and drawings to be modified to Orion's reasonable satisfaction.
Orion  shall  have the right at any time with  prior  notification,  at  Orion's
expense, to have personnel  designated by Orion supervise,  inspect and test any
and  all  aspects  of  such  construction,   erection,   equipping,  supply  and
installation related to the TT&C Earth Station.

   
         3.2. The  Antenna.  In  coordination  with its  activities  pursuant to
Section 3.1, DACOM shall purchase,  construct,  install and erect an antenna and
related  systems and  equipment to the interface  point in  accordance  with the
Antenna Specifications attached hereto as Exhibit C, and having the capabilities
specified  in Exhibit C. Orion shall have the right,  upon its request to DACOM,
to inspect all civil,  mechanical and electrical  engineering  and  construction
contracts,  and  all  other  contracts,  with  third  parties  relating  to such
purchase,  construction,  installation and erection,  as well as all site layout
plans and detailed mechanical and electrical drawings. If such contracts,  plans
and drawings are not reasonably  satisfactory  to Orion,  DACOM shall cause such
contracts, plans and drawings to be modified to Orion's reasonable satisfaction.
Orion shall have the right at any time, at Orion's  expense,  to have  personnel
designated  by Orion  supervise,  inspect  and test any and all  aspects of such
construction, installation and erection. Construction, installation and erection
of the  Antenna  shall  be  completed  by  DACOM  by such  date  as will  permit
acceptance  of the Antenna to occur on or prior to April 30,  1998,  or as to be
agreed  at the  Final  Design  Review,  as  specified  in  Section  5.2 of  this
Agreement.
    


                                   ARTICLE 4.

                                 TT&C EQUIPMENT
                                 --------------

         4.1. Supply of TT&C Equipment. Orion shall cause to be delivered to the
Site and  installed  the  equipment  specified  in  Exhibit D hereto  (the "TT&C
Equipment").  Exhibit D may be modified or  supplemented by Orion in any respect
at any time before the TT&C Acceptance Date, if in Orion's  reasonable  judgment
such  modification  or  supplementation  is  necessary  or  appropriate  for the
efficient and profitable operation of the Satellite. Orion shall notify DACOM of
any such modification or  supplementation.  DACOM and its contractors and agents
shall cooperate with Orion in such installation,  at the expense of DACOM. Orion
shall  use its best  efforts  to cause  the TT&C  Equipment  to be  shipped  and
installed at times which  coordinate with DACOM's  construction  schedule at the
Site.  The TT&C  Equipment  shall be  assembled  in the  United  States,  unless
otherwise agreed between Orion and DACOM.

          4.2. Shipments; Duties. Orion shall be responsible for shipment of the
TT&C Equipment to the Site, by such means as Orion may choose. DACOM shall, upon
Orion's  request,  prepay all import duties and taxes,  port  charges,  property
taxes and similar governmental levies imposed upon Orion in connection with such
shipment and the installation and use of the TT&C Equipment at the Site. If such
import  taxes,  duties and  similar  fees are prepaid by DACOM at the request of
Orion,  Orion shall reimburse  DACOM in full for such prepayment  within 30 days
after  receipt of an invoice from DACOM  detailing  the amounts  prepaid.  DACOM
shall use reasonable efforts to

                                      -3-




expedite  customs  clearance of the TT&C  Equipment  and to minimize  import and
other duties,  taxes,  fees and costs  imposed in connection  with the shipment,
installation and use of the TT&C Equipment at the Site.

         4.3.  Spares,  Tooling,  Supplies,  etc.  From time to time Orion shall
cause to be delivered to the Site, and installed if appropriate,  such spare and
replacement equipment, tooling and supplies for the TT&C Equipment as in Orion's
judgment is necessary or appropriate  for the operation of the TT&C Equipment as
contemplated by this Agreement.

         4.4. Title to TT&C Equipment.  All TT&C Equipment delivered to the Site
pursuant to this Article 4, or  otherwise  obtained by Orion for the purposes of
this Agreement,  shall be and remain the property of Orion, and DACOM shall have
no  interest  therein.  Orion may  sell,  lease,  mortgage,  impose a Lien on or
otherwise  deal with or dispose of any or all TT&C Equipment at any time or from
time to time,  so long as such TT&C  Equipment at the Site remains  available to
perform its functions as contemplated by this Agreement.  During the Term, Orion
shall  have the  right,  at any time or from time to time,  to  remove  any TT&C
Equipment  which is no longer needed at the Site for purposes of this Agreement.
At the end of the Term,  Orion shall have the right, at any time or from time to
time within 180 days after the end of the Term, to remove or cause to be removed
any or all of the TT&C Equipment then at the Site. If any of such TT&C Equipment
is not so removed  within such  180-day  period,  such TT&C  Equipment  shall be
deemed to have been abandoned by Orion.


                                   ARTICLE 5.

                                    TESTING
                                    -------

         5.1. TT&C Equipment  Testing and  Acceptance.  Prior to the shipment of
the TT&C  Equipment  to the Site,  Orion  shall  perform or cause the  equipment
manufacturers  to perform  testing to  determine  whether the TT&C  Equipment is
capable of performing the functions summarized in Exhibit A hereto. Such testing
of the TT&C  Equipment  shall be in  accordance  with the  Acceptance  Test Plan
contained in Exhibit E hereto.  Within 30 days  following the conclusion of such
testing,  Orion  shall  furnish  to DACOM  results  of the test data in  Orion's
possession  relating  to the  TT&C  Equipment  in a format  consistent  with the
Acceptance Test Plan. At the conclusion of such testing and following the review
of such  test  data by DACOM  and  Orion,  if any of the TT&C  Equipment  is not
capable  of  performing  the  functions  summarized  in  Exhibit A hereto in all
material   respects,   Orion  shall  use  reasonable   efforts  to  correct  the
deficiencies  in the  TT&C  Equipment.  Acceptance  of the  TT&C  Equipment  for
purposes  of the  performance  of  services  under  Article 7 shall  occur  upon
successful  completion of the testing described in this Section 5.1, which shall
be acknowledged by DACOM and Orion in writing upon completion.

         5.2  Antenna  Testing  and  Acceptance.  At a time  prior  to the  TT&C
Acceptance Date which is mutually  agreeable to Orion and DACOM, Orion and DACOM
shall  cooperate in performing  testing of the Antenna to determine  whether the
Antenna is capable of performing  the functions  summarized in Exhibit A hereto.
Such testing of the Antenna shall be in accordance with the Acceptance Test Plan
contained in Exhibit E hereto.  At the  conclusion of such testing and following
the review of such test data by DACOM and Orion,  if the  Antenna is not capable
of  performing  the  functions  summarized  in Exhibit A hereto in all  material
respects,  DACOM shall use reasonable efforts to correct the deficiencies in the
Antenna. Acceptance of the

                                      -4-


   
Antenna for purposes of the  performance of services under Article 7 shall occur
upon successful  completion of the testing  described in this Section 5.2, which
shall be  acknowledged by DACOM and Orion in writing at the Site upon completion
(the "Antenna Acceptance Date");  provided,  however, that such acceptance shall
occur no later than April 30, 1998 or as determined at the Final Design Review.

         5.3. TT&C Earth Station Testing and  Acceptance.  Following the testing
and acceptance of the TT&C Equipment pursuant to Section 5.1 and the testing and
acceptance  of the  Antenna  pursuant  to  Section  5.2,  Orion and DACOM  shall
cooperate in performing  testing of the TT&C Earth Station to determine  whether
the TT&C Earth  Station is capable of commencing  operations in accordance  with
the Acceptance Test Plan contained in Exhibit E. Upon  successful  completion of
such testing,  Orion shall notify DACOM that the TT&C Earth Station is ready for
operation as contemplated by Article 1. Unless DACOM objects to such notice,  by
notice to Orion given  within 5 days after such notice to DACOM,  DACOM shall be
deemed to have  accepted  the TT&C Earth  Station as of the date of such  notice
from Orion to DACOM.  If DACOM  does give  notice of such  objection,  DACOM and
Orion shall negotiate in good faith to reach agreement on remedial measures,  if
any, to meet DACOM's objection,  and if DACOM and Orion are unable to reach such
agreement  within 90 days  after such  notice by DACOM,  this  Agreement  may be
terminated  by DACOM or Orion  after  the end of such  90-day  period.  The TT&C
Acceptance  Date  shall be the date of such  notice  from  Orion to DACOM or, if
DACOM  objects  to such  notice,  shall be the date when  DACOM and Orion  reach
agreement  on  any  remedial   measures  and  such  measures  are  completed  as
contemplated  by this Section 5.3. If the TT&C Acceptance Date does not occur on
or before September 30, 1998, either Orion or DACOM may terminate this Agreement
by notice given by the terminating party to the other party within 60 days after
September 30, 1998.
    

         5.4.  Periodic  Testing.  After the TT&C Acceptance Date and during the
Term,  DACOM and/or Orion shall perform such tests of the TT&C Earth Station and
the TT&C Equipment as are specified in Exhibit E hereto,  at the times specified
in said  Exhibit E.  Exhibit E may be modified or  supplemented  by Orion in any
respect at any time  during the Term,  if in Orion's  reasonable  judgment  such
modification or supplementation is necessary or appropriate.  Orion shall notify
DACOM of any such modification or supplementation.


                                   ARTICLE 6.

                                    PERSONNEL
                                    ---------

         6.1. DACOM  Personnel.  All personnel  necessary or appropriate for the
operation and maintenance of the TT&C Earth Station throughout the Term shall be
supplied by DACOM,  at the expense of DACOM.  Such personnel may be employees or
agents of DACOM or independent  contractors.  The number and  qualifications  of
such personnel shall at least meet the job  descriptions and other standards set
forth in Exhibit F hereto.  In  addition,  at all times  during the Term,  DACOM
shall  provide  sufficient  on-site  personnel at the TT&C Earth Station who are
fluent in English.  Exhibit F may be modified  or  supplemented  by Orion in any
respect at any time  during the Term,  if in Orion's  reasonable  judgment  such
modification  or  supplementation  is necessary or appropriate for the efficient
and profitable operation of the Satellite.  Orion shall notify DACOM of any such
modification or supplementation.  The technical abilities and job performance of
such personnel shall be reasonably  satisfactory to Orion, and if Orion notifies
DACOM with appropriate justification that any of such


                                      -5-




personnel are not  satisfactory,  DACOM shall promptly replace such personnel or
take other  appropriate  action  satisfactory  to Orion.  However,  none of such
personnel shall be deemed to be employees of Orion,  and neither DACOM nor Orion
shall take any action  pursuant to this  Agreement  which  might  result in such
personnel  being  treated as employees of Orion for tax,  liability or any other
purposes.

   
         6.2.  Training.  At the request and at the expense of DACOM, Orion will
cause up to 5  persons  designated  by  DACOM to  receive  training  by  Orion's
qualified  personnel in such matters relating to the operation of the TT&C Earth
Station as DACOM may request and Orion may deem appropriate.  Each such training
session  shall  take  place  prior to the TT&C  Acceptance  Date  during  normal
business  hours at the  facilities  in  Rockville,  Maryland,  U.S.A.,  of Orion
Network Systems, Inc., or at such other facilities in the United States as Orion
may  designate by notice to DACOM.  The  substance and duration of such training
shall be within the complete discretion of Orion, and the formal training period
for any individual shall be up to 4 weeks.  Training  material shall be provided
prior to  commencement  of training.  Orion shall not impose any charge for such
training,  but  DACOM  shall be  responsible  for the  transportation,  housing,
maintenance  and other support of such persons in connection with such training,
and DACOM shall be responsible for any approvals of  Governmental  Bodies within
the United  States  required  for such persons to enter and remain in the United
States for such training.  In each year after the TT&C  Acceptance  Date, at the
request  of  DACOM,  Orion  will  cause up to 2 persons  designated  by DACOM to
receive similar training, upon the same terms and conditions.
    

         6.3.  Initial  Advisory  Supervision and On-Site  Training.  During the
period  commencing 30 days before the TT&C  Acceptance  Date and ending 120 days
after the TT&C  Acceptance  Date,  Orion shall  supply such numbers of qualified
technical or supervisory personnel as Orion may deem necessary or appropriate to
advise and train DACOM personnel  concerning the start-up and initial  operation
of the TT&C Earth Station.  Such Orion  personnel shall be available at the Site
at such times as DACOM or Orion deems  appropriate.  DACOM shall reimburse Orion
for the cost of local  transportation,  housing including adequate hotel room or
apartment,  maintenance  and other support of such personnel in connection  with
such   activities,   and  DACOM  shall  be  responsible  for  any  approvals  by
Governmental  Bodies in Korea  required  for such persons to enter and remain in
Korea for such  activities.  DACOM shall not be  responsible  for costs of Orion
personnel associated with in-orbit testing.

         6.4.  Confidentiality  Agreements.  Each person who  receives  training
pursuant to Section 6.2 shall, prior to the beginning of such training,  execute
and  deliver  to Orion a  confidentiality  agreement  in the form of  Exhibit  G
hereto.


                                   ARTICLE 7.

                       OPERATION OF THE TT&C EARTH STATION
                       -----------------------------------

         7.1.  Operations.  DACOM shall operate the TT&C Earth Station after the
TT&C Acceptance  Date and at all times during the Term of this  Agreement,  on a
twenty-four hours per day, seven days per week,  fifty-two weeks per year basis,
in such a manner that TT&C commands  generated by Orion at other  facilities and
transmitted to the TT&C Earth Station by such electronic or other means as Orion
may choose from time to time,  will be  transmitted to the Satellite as and when
directed  by  Orion,  and  that  signals  from  the  Satellite  relating  to the
Satellite's  condition and operations will be received by the TT&C Earth Station
and transmitted by the TT&C Earth Station to

                                      -6-




Orion.  DACOM shall not transmit any other signals to the  Satellite,  except as
specifically directed by Orion. Such commands by Orion may be encrypted in whole
or in part,  and DACOM  shall not  de-encrypt  any such  encrypted  commands  or
signals except as specifically authorized by Orion. Orion may interrupt, suspend
or cease  transmitting such commands or signals to the TT&C Earth Station at any
time and for any reason deemed  sufficient by Orion in Orion's sole  discretion.
DACOM hereby  covenants  and agrees,  for itself and its  employees,  agents and
independent contractors,  to operate the TT&C Earth Station, at all times during
the Term, in a workmanlike  manner and in accordance with (a) generally accepted
worldwide  industry  standards for the operation of such TT&C stations,  and (b)
any directions given by Orion from time to time with respect to such matters.

         7.2.     Personnel; Utilities and Supplies; Security; etc.

                  (a) Personnel. DACOM shall have sufficient trained and capable
personnel at the TT&C Earth Station at all times,  and/or available on call near
the TT&C Earth Station,  to operate the TT&C Earth Station  pursuant to Sections
6.1 and 7.1 and to carry out the other  functions  required of DACOM pursuant to
this  Article 7. At all times,  the  on-site  personnel  provided by DACOM shall
include trained and capable personnel who are fluent in the English language. If
in Orion's  judgment the number or capabilities of such personnel are inadequate
with  appropriate  justification,  immediately  upon  notice  from Orion to that
effect DACOM shall provide such additional  trained and capable personnel at the
Site as Orion may request.

                  (b) Utilities  and Services.  DACOM shall cause the TT&C Earth
Station to be supplied with adequate  light,  heat, air  conditioning  and other
climate control,  uninterruptible primary and backup electric power, fire alarms
and fire  protection,  spare equipment,  tools,  supplies and other services and
materials  necessary  or  appropriate  in the judgment of Orion for the safe and
efficient operation of the TT&C Earth Station pursuant to this Agreement.

                  (c)  Security.  DACOM shall install and maintain such security
devices at the Site of the TT&C Earth Station, and provide such guards and other
security  measures,  as may be necessary or appropriate in the judgment of Orion
to prevent  unauthorized entry onto the Site and to maintain the confidentiality
of  all   technological   information   concerning  the  design,   construction,
installation and operation of the TT&C Equipment, the commands and other signals
sent to and from the TT&C Earth Station and all other Confidential Information.

                  (d) Visitation Rights.  Orion with prior notification to DACOM
may at any time,  at Orion's  expense,  send persons  designated by Orion to the
Site to observe the  operation of the TT&C Earth  Station,  inspect and test the
TT&C  Equipment,  and consult with TT&C  personnel at the TT&C Earth  Station or
elsewhere. DACOM shall cooperate fully with such persons.

         7.3.     Maintenance and Repair.

                  (a)  Regular  Maintenance  and  Routine  Repairs.  DACOM shall
perform such periodic maintenance and routine repairs of the TT&C Earth Station,
including the TT&C  Equipment,  as may be necessary or  appropriate to cause the
TT&C Earth Station and the TT&C Equipment to remain in good operating condition,
reasonable wear and tear excepted.  DACOM shall follow any instructions given by
Orion with respect to such periodic  maintenance and routine repairs.  If all or
part of the TT&C  Equipment  will be maintained  and/or  serviced  pursuant to a
contract between Orion


                                      -7-




and the  manufacturer  and/or supplier of such  equipment,  Orion shall bear all
expenses in connection with such  maintenance or service  contract.  DACOM shall
permit authorized  representatives of such manufacturer  and/or supplier to have
access to the TT&C  Earth  Station  for the  purpose of  performing  maintenance
and/or repairs to the TT&C Equipment.

                  (b) Malfunctions  and Breakdowns.  If either party learns that
any portion of the TT&C Earth Station, or any portion of the TT&C Equipment, has
ceased to operate,  or may soon cease to operate,  in the manner contemplated by
this  Agreement,  or that for any  reason  the TT&C  Earth  Station  or the TT&C
Equipment is no longer able,  or may soon be unable,  to receive  commands  from
Orion and transmit such  commands to the Satellite and receive  signals from the
Satellite and transmit such signals to Orion,  as  contemplated  by Section 7.1,
the party learning of such condition  shall  immediately  notify the other party
thereof,  by telephonic or  electronic  communication.  In that event (except as
provided in Section  7.4) DACOM shall take such  remedial  action as Orion shall
specify,  and shall take no other action (except emergency action, if necessary)
to remedy such condition.  If such condition requires  modifications to the TT&C
Equipment  or  replacement  of any  TT&C  Equipment  and such  replacement  TT&C
Equipment is not available at the Site, Orion shall use its best efforts (except
as provided  in Section  7.4) to cause such  replacement  TT&C  Equipment  to be
delivered  to the Site as soon as  possible,  and shall  supply  such  technical
personnel to the Site as may be  necessary,  in Orion's  judgment,  to make such
modification or install such replacement TT&C Equipment.

   
                  (c)  Test  Equipment  and  Spares.  Orion  shall  provide  the
following  test  equipment as a minimum for general  operation  and  maintenance
purpose:
    

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

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

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

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

Orion also shall provide necessary spares for _____ and ________  equipment such
as  manufacturers  recommended  spares for  normal  operations.  During  initial
operation,  manufacturers  warranties  will  be  utilized  for  maintenance  and
calibration.
    

         7.4.  Destruction of the TT&C Earth Station.  If the TT&C Earth Station
is destroyed,  or is so damaged that it cannot  reasonably be repaired  within a
reasonable  time,  by  accident  or natural  catastrophe  or by any other  cause
whatsoever,  either Orion or DACOM may terminate this  Agreement  within 90 days
after such  destruction or damage.  Each party may carry such insurance  against
such damage or destruction as such party chooses, in the sole discretion of such
party, subject, however, to the provisions of Section 13.2.


                                   ARTICLE 8.

                            REPORTS AND DOCUMENTATION
                            -------------------------

         8.1.  Summaries.  DACOM shall  provide a summary,  in  English,  of all
reports,  procedures,  including Antenna test plans and instruction manuals, and
other

                                      -8-




appropriate documentation with respect to the Antenna construction and operation
of the TT&C facility.

         8.2.  Logs.  DACOM  shall keep  daily  operations  logs in the  English
language  recording such data as Orion may request from time to time  concerning
the  use,  maintenance,  repair  and  replacement  of  TT&C  Equipment  and  the
operations of the TT&C Earth Station.  Such logs shall be available at all times
for inspection by Orion,  and at the request of Orion DACOM shall make copies of
such logs or portions thereof and supply such copies to Orion.

         8.3. Regular Periodic  Reports.  At least once a month during the Term,
DACOM shall give Orion a written report  summarizing  the operations of the TT&C
Earth Station during the previous month,  and containing such other  information
concerning  the TT&C Earth  Station and the TT&C  Equipment as Orion may request
from time to time.  Such  reports  shall be in the English  language and in such
format,  and with such  accompanying  data and detail, as Orion may request from
time to time.

         8.4. Special Reports of Anomalous Events. If the operations of the TT&C
Earth Station are  interrupted,  or if any of the TT&C  Equipment or the Antenna
malfunctions in any material respect or is damaged or destroyed, or if any other
unusual  event  occurs  which Orion  notifies  DACOM  should be the subject of a
special report,  DACOM shall give Orion a written report thereof containing such
other  information  concerning  the TT&C Earth Station and the TT&C Equipment as
Orion may request  from time to time.  Such  reports  shall be given to Orion as
soon as practicable after the event being reported,  and shall be in the English
language  and in such format,  and with such  accompanying  data and detail,  as
Orion may request from time to time.

         8.5. Format of Logs and Reports.  All logs and reports  provided for by
this  Article  8 may be  prepared  and/or  kept by  DACOM  in  either a paper or
electronic  format.  If such logs and reports are prepared  and/or kept by DACOM
electronically,  back-up  copies of such logs and reports  also must be prepared
and/or kept.


                                   ARTICLE 9.

                                CHARGES; PAYMENTS
                                -----------------

         9.1.     Charges.  DACOM and Orion shall pay the following Charges:

   
                  (a) Land Acquisition Charges.  Orion shall reimburse DACOM for
the amount  paid by DACOM to third  parties who are not  Affiliates  of DACOM to
purchase or lease the land for the Site  pursuant to Section 2.3,  provided that
the  total  amount  of such  reimbursement  shall not  exceed  Two-Thousand  and
Five-Hundred  United  States  Dollars  ($2,500  USD). If such land is purchased,
____________ of such land acquisition Charges shall be paid by Orion to DACOM on
the  Antenna  Acceptance  Date.  The  remaining   ______________  of  such  land
acquisition charges shall be paid by Orion to DACOM on the TT&C Acceptance Date.
If the land is leased,  Orion shall pay to DACOM on the Antenna Acceptance Date,
_________________ of the aggregate amount of all lease payments theretofore paid
by DACOM.  During the period  between the Antenna  Acceptance  Date and the TT&C
Acceptance  Date,  Orion shall pay to DACOM  ________________  of the  aggregate
amount of all lease  payments  paid by DACOM  during such period  within 15 days
after Orion  receives  appropriate  invoices  for such  Charges.  The  remaining
______________ of the
    

                                      -9-




aggregate  lease payments paid by DACOM prior to the TT&C  Acceptance Date shall
be paid by Orion to DACOM on the TT&C  Acceptance  Date.  Orion shall  reimburse
DACOM for  _______________________  of all lease  payments for such land made by
DACOM for periods after the TT&C Acceptance Date and through the end of the Term
of this Agreement,  within 15 days after Orion receives appropriate invoices for
such  Charges.  If and when  requested by Orion,  DACOM shall provide Orion with
evidence of the payment of such amounts by DACOM.

                  (b) Construction Charges. Orion shall reimburse DACOM, subject
to  Section  4.2,  for the  amount  paid by DACOM to third  parties  who are not
Affiliates of DACOM to construct the TT&C Earth Station (which  without  Orion's
consent  shall not exceed  $50,000 USD) pursuant to Article 3, provided that (i)
no such  reimbursement  shall be payable  with  respect to  portions of the TT&C
Earth Station which are not necessary for the installation of the TT&C Equipment
and the Antenna,  as specified in Exhibit H hereto,  and (ii) such reimbursement
shall not exceed the total  amount,  and the amount per  component or portion of
the TT&C Earth Station,  specified in Exhibit H hereto. If and when requested by
Orion,  DACOM shall provide  Orion with such invoices and other  evidence of the
payment of such amounts by DACOM. The  construction  Charges payable by Orion to
DACOM  pursuant to this  Section  9.1(b)  shall be payable  within 15 days after
Orion receives appropriate invoices from DACOM for such charges, but in no event
shall such invoices be payable before the TT&C Acceptance Date.

   
                  (c) Antenna Charges.  Orion shall reimburse DACOM,  subject to
Section  4.2, for the actual  amount paid by DACOM to third  parties who are not
Affiliates of DACOM to purchase,  construct and install the Antenna  pursuant to
Article 3. The payment for the antenna  subsystem  described in Exhibit C1 shall
be a fixed amount at ____________. The payment for the RF/IF equipment and IFLs,
including  shipping,  installation,  testing,  taxes and other levies,  shall be
reimbursed   on   the   actual   cost   basis,   but   it   shall   not   exceed
______________________________________________  ________.  If and when requested
by Orion, DACOM shall provide Orion with such invoices and other evidence of the
payment of such amounts by DACOM.  _______  ___________  of the Antenna  Charges
payable by Orion to DACOM  pursuant to this  Section  9.1(c) shall be payable on
the Antenna  Acceptance  Date.  The remaining  ____  ___________  of the Antenna
Charges payable by Orion to DACOM shall be payable on the TT&C Acceptance Date.
    

                  (d) No  Charge.  All  DACOM  personnel and TT&C services shall
be provided by DACOM to Orion  without  charge,  except as  expressly  set forth
herein.

         9.2.  Payments,  Taxes and Bank  Charges.  All payments due to Orion or
DACOM hereunder  shall be made in United States Dollars by telegraphic  transfer
of immediately  available  funds to a bank account  designated by Orion to DACOM
from time to time,  in the case of payments to Orion,  or by DACOM to Orion from
time to time,  in the case of payments to DACOM,  net of any bank fees,  duties,
taxes  (withholding or otherwise) or similar charges that may be imposed by such
banks or by any  Governmental  Bodies  within Korea or the United  States or any
other nation.

         9.3.  Time of  Payment.  Each  party  shall be deemed to have  received
payment  from  the  other  party  at the time the  payment  is  received  by the
designated  bank of the party to receive such payment.  Each party  acknowledges
and agrees  that any  failure  by it to pay any  amount  due to the other  party
hereunder  within 10 days of receipt of a notice from such other party that such
payment is due shall constitute a material breach of this Agreement.


                                      -10-




         9.4.  Interest.  If any amount payable by either party hereunder is not
received  when due,  such amount shall bear  interest  until paid at the rate of
eighteen percent (18%) per annum, calculated daily.

                                   ARTICLE 10.

                                TERM; TERMINATION
                                -----------------

         10.1.  Term.  This Agreement  shall be effective as of the date hereof,
and shall  terminate  effective as of the expiration of the Term under the Joint
Investment  Agreement,  except as otherwise  provided in Sections 2.4, 5.3, 7.4,
10.2(a), 10.2(b), 10.2(c) and 10.2(d).

         10.2. Termination. In addition to the termination rights of the parties
specified in Sections 2.4, 5.3 and 7.4:

                  (a) End of Joint Investment Agreement. If and when the Term of
the Joint Investment Agreement ends, Orion or DACOM may terminate this Agreement
at any time thereafter upon at least 6 months notice to the other party,  unless
this Agreement is modified or extended by the parties.

                  (b) Force  Majeure.  If operation of the TT&C Earth Station as
contemplated  by this  Agreement is prevented by Force  Majeure for more than 15
consecutive  days,  either party may terminate  this Agreement at any time after
the end of such  15-day  period  and while  such  Force  Majeure  prevents  such
operation,  upon at  least  30 days  notice  to the  other  party,  unless  this
Agreement is modified or extended by the parties.

                  (c) Breach of  Agreement.  If either party  commits a material
breach of any of the provisions of this  Agreement and such material  breach has
not been cured within thirty days after  receipt by the  breaching  party of the
other party's notice of such breach,  then the non-breaching party may terminate
this  Agreement  upon notice given to the  breaching  party at least ten and not
more than sixty days after the expiration of such thirty-day period, unless this
Agreement is modified or extended by the parties.

                  (d)  Bankruptcy,  etc.  If an Act of  Bankruptcy  occurs  with
respect to either party,  then the other party may terminate this Agreement upon
notice  given to the party which is subject to such Act of  Bankruptcy  at least
ten and not more  than 180  days  after  such  Act of  Bankruptcy,  unless  this
Agreement is modified or extended by the parties.

         10.3.  Payment  of  Charges.  In the event of any  termination  of this
Agreement for any reason  whatsoever  after the TT&C  Acceptance  Date, (i) each
party shall  promptly pay to the other party any Charges or other  amounts which
have accrued to the date of such termination and neither party shall be entitled
to any  refund or credit of any  Charges  theretofore  paid by such party to the
other party.  In the event of any  termination  of this Agreement for any reason
whatsoever  before the TT&C Acceptance Date,  neither party shall be entitled to
receive  any  Charges  after the date of such  termination,  whether or not such
Charges may have accrued before the date of such termination,  and neither party
shall be entitled to any refund or credit for Charges previously paid.

         10.4. Certain Provisions Survive Termination. The provisions of Section
4.5,  Article 9, Section 10.3,  this Section 10.4,  Articles 13 and 14,  Section
15.1 and Article 19 shall survive any  termination  of this  Agreement and shall
not be affected thereby.

                                      -11-





         10.5.  Option to Purchase or Lease the Site and the TT&C Earth  Station
upon  Termination.  If Orion has purchased the Site and the TT&C Earth  Station,
Orion shall, upon termination of this Agreement,  offer to sell the Site and the
TT&C Earth Station back to DACOM at Fair Market Value (as defined below). If the
Site is leased to Orion, Orion shall, upon termination of this Agreement, permit
DACOM to acquire  the  remaining  lease term and the TT&C Earth  Station at Fair
Market Value.  For purposes of this Section 10.5,  "Fair Market Value" means the
fair market value of the Site and the TT&C Earth  Station as  determined  by the
agreement of Orion and DACOM, or absent such agreement,  the value determined by
the appraisal  process  described below. In the event Orion and DACOM are unable
to agree on the Fair Market Value of the Site and/or the TT&C Earth  Station for
purposes of this Section 10.5, the issue shall be submitted to appraisal  before
a panel of three appraisers.  Orion and DACOM shall each have 15 days to appoint
one  appraiser.  The two  appraisers  appointed by the parties shall appoint the
third  appraiser.  The panel of  appraisers  shall  determine,  by  unanimous or
majority  decision,  the Fair  Market  Value of the Site  and/or  the TT&C Earth
Station. The decision of the appraisers as to Fair Market Value shall be final.

         10.6.  Subsequent  Modification  or  Expansion.  If in  the  reasonable
judgment of Orion changed conditions,  technological  developments or commercial
opportunities  make it desirable  to modify or expand the TT&C Earth  Station in
the  future,  Orion  shall  give  DACOM  at  least  60 days  notice  of  Orion's
determination  to accomplish  such  modification  or expansion.  If such desired
modification or expansion does not involve any significant capital  expenditure,
DACOM shall promptly carry out such requested modification or expansion.  In all
other cases,  DACOM and Orion shall proceed with such  modification or expansion
upon the same basis as the original construction and equipping of the TT&C Earth
Station,  with the same  responsibility  of the  parties  for payment of Charges
relating thereto.


                                   ARTICLE 11.

                                  FORCE MAJEURE
                                  -------------

         Any  failure  or  delay  in the  performance  by  either  party  of its
obligations hereunder shall not be a breach of this Agreement if such failure or
delay is caused by any acts of God, fire, flood, weather,  receive earth station
sun outage or other catastrophes, national emergencies,  insurrections, riots or
wars, strikes, lockouts, work stoppages or other labor difficulties, or any law,
order,  regulation,  direction,  action or request of any government,  or of any
department,  agency, commission, bureau, corporation or other instrumentality of
any  government,  or of any civil or military  authority;  provided that (i) the
party whose  performance is prevented or delayed takes all  reasonable  steps to
avoid or remove such causes of nonperformance and continues performance whenever
and to the extent  that such  causes are  removed  or end.  If Force  Majeure is
claimed by either  party,  such party shall  provide  prompt notice to the other
party of both the  commencement and cessation dates of such Force Majeure event.
The  occurrence of a Force Majeure shall not entitle either party to any refunds
of Charges hereunder or to any other remedy whatsoever, except that both parties
shall  have  the  termination   right  provided  in  Section  10.2(b)  with  the
consequences provided in Section 10.3.

                                      -12-

                                   ARTICLE 12.

                             GOVERNMENTAL APPROVALS
                             ----------------------

         12.1.  Korean  Government  Approvals.  DACOM shall be  responsible  for
obtaining all authorizations, licenses, permits, consents and other approvals or
governmental  actions,  from  or by  the  Government  of  Korea  and  any  other
Governmental  Body  within  Korea  having  jurisdiction,  which are  required by
Section 2.2 or otherwise  necessary or  appropriate to enable DACOM and Orion to
carry out their respective obligations under this Agreement, to obtain necessary
financing  for the  transactions  contemplated  hereby and to transfer any funds
required  hereunder.  Upon DACOM's request,  and to the extent  feasible,  Orion
shall assist DACOM in obtaining any such governmental  actions. Upon the request
of Orion,  DACOM shall assist Orion in obtaining  the support of any such Korean
Governmental Body to assist in the coordination or consultation of the Satellite
and the frequencies on which the transponders on the Satellite will operate, all
in accordance with ITU regulations and the INTELSAT Treaty.

         12.2.  United States Government  Approvals.  Orion shall be responsible
for  obtaining  all  authorizations,   licenses,  permits,  consents  and  other
approvals  or  governmental  actions , from or by the  Government  of the United
States  and  any  other  Governmental  Body  within  the  United  States  having
jurisdiction,  which are necessary or  appropriate  to enable Orion and DACOM to
carry out their  respective  obligations  under  this  Agreement.  Upon  Orion's
request,  and to the extent  feasible,  DACOM will assist Orion in obtaining any
such  governmental   actions.  Any  consultation  with  INTELSAT  regarding  the
operation of the Satellite  will be the  responsibility  of Orion as Orion deems
appropriate.


                                   ARTICLE 13.

                                      RISK
                                      ----

         13.1. Risk of Loss. All risk of damage, destruction or loss of the TT&C
Earth Station shall be borne by Orion, and DACOM shall have no responsibility or
liability  therefor.   Notwithstanding  the  foregoing,   Orion  shall  have  no
liability, responsibility or obligation hereunder with respect to any damage to,
or destruction or loss of, the Satellite or any  transponder or other  equipment
on the Satellite resulting from any malfunction or failure of the Antenna or the
TT&C  Equipment,  and DACOM's  rights with  respect to any such  malfunction  or
failure shall be governed solely by the Transponder  Agreement.  No such damage,
destruction, loss, malfunction or failure shall entitle either DACOM or Orion to
any refunds of any Charges or any other remedies.

         13.2.  Insurance.  Each party shall be  responsible  for  obtaining and
maintaining  such  insurance  as such party may  choose,  in such  party's  sole
discretion,  to cover such party's insurable interests in the TT&C Earth Station
or the TT&C  Equipment,  and the proceeds of any such insurance shall be payable
to the party  obtaining and  maintaining  it and not to the other party.  At the
request of either party, the other party shall use reasonable  efforts to assist
the requesting party in obtaining any such insurance.  In addition,  DACOM shall
maintain  insurance  coverage in the amount of Two Million United States Dollars
(2,000,000  USD),  or other sums as  mutually  agreed,  with  respect to loss or
damage to the TT&C Earth Station, the Antenna or the TT&C Equipment caused by or
resulting from the negligence of DACOM's employees or agents.



                                      -13-

                                  ARTICLE 14.

                            INDEMNIFICATION; DAMAGES
                            ------------------------

         14.1.  Indemnification.  Each party shall  indemnify and hold the other
party,  and  such  other  party's  shareholders,  officers,  directors,  agents,
employees and assigns,  or any of them,  whether acting through such other party
or  otherwise,  harmless  from  and  against  any and all  claims,  liabilities,
expenses,  assessments,  judgments and recoveries,  including  attorneys'  fees,
incurred by any of them and  occasioned by, arising out of or resulting from any
material  misrepresentation,  breach of  warranty  or  covenant,  or  default or
nonfulfillment  of any terms and  conditions,  on the part of such  indemnifying
party under this Agreement.

         14.2.  Consequential  Damages. In no event shall either party be liable
for any indirect,  incidental or consequential  damages,  whether foreseeable or
not, occasioned by any cause whatsoever;  except that DACOM's indemnification of
Orion pursuant to Section 14.1 shall cover damages suffered by Orion,  including
loss of rentals, purchase price, income or profits, arising out of any damage to
or loss of the Satellite or any  transponders or other equipment  thereon or any
interruption of the Satellite's ability to transmit  programming pursuant to the
various  agreements  between Orion and users of the Satellite or transponders or
other equipment thereon.

         14.3.  Procedure  for  Indemnification.  In the  event of a claim  with
respect to which a party is entitled to  indemnification  hereunder,  such party
("Indemnified  Party")  shall notify the other party  ("Indemnifying  Party") in
writing as soon as practicable, but in no event later than 15 days after receipt
of such claim;  provided  that a delay in giving such notice  shall not preclude
the Indemnified Party from seeking  indemnification  hereunder if such delay has
not materially prejudiced the Indemnifying Party's ability to defend such claim.
The  Indemnifying  Party shall promptly defend such claim (by counsel of its own
choosing  and  reasonably   satisfactory  to  the  Indemnified  Party)  and  the
Indemnified Party shall reasonably  cooperate with the Indemnifying Party in the
defense  of such  claim,  including  the  settlement  of the matter on the basis
stipulated  by  the  Indemnifying  Party  (with  the  Indemnifying  Party  being
responsible  for all costs and expenses of such  settlement  and the  reasonable
out-of-pocket expenses incurred by the Indemnified Party in cooperating with the
Indemnifying  Party),  subject to the  limitations  on  settlement  described in
subparagraphs  (a) and (b) below. If a conflict of interest exists vis-a-vis the
interests of the Indemnifying  Party and the Indemnified  Party, the Indemnified
Party shall (i) be entitled to defend the claim,  suit,  or action or proceeding
at the expense of, for the account of and at the risk of the Indemnifying Party;
(ii)  engage  counsel  of  its  own  choosing   reasonably   acceptable  to  the
Indemnifying Party, and at the expense of, for the account of and at the risk of
the Indemnifying  Party;  and (if the actions  specified in clauses (i) and (ii)
above are taken,  then (iii) take  reasonable  steps to monitor  and control the
fees and  costs of  counsel  so  chosen;  and (iv) keep the  Indemnifying  Party
reasonably informed of the status of such defense,  including without limitation
any settlement  proposals by the claimant.  If the Indemnifying  Party, within a
reasonable time after notice of a claim,  fails to defend the Indemnified Party,
the Indemnified Party shall be entitled to undertake the defense,  compromise or
settlement  of such claim at the  expense of, for the account and at the risk of
Indemnifying Party. Upon the assumption by the Indemnifying Party of the defense
of such claim, the Indemnifying  Party may settle or compromise such claim as it
sees fit; provided,  however, that anything in this Section 14.3 to the contrary
notwithstanding:


                                      -14-




                  (a)  Consent.  If there  is a  reasonable  probability  that a
settlement  or  compromise of a claim may  materially  and adversely  affect the
Indemnified Party, the Indemnifying Party shall not so settle or compromise such
claim without the consent of the Indemnified  Party,  which consent shall not be
unreasonably withheld; and

                  (b) Counterclaim.  If the facts giving rise to indemnification
hereunder  shall  involve a possible  claim by the  Indemnified  Party against a
third party,  the  Indemnified  Party shall have the right,  at its own cost and
expense, to undertake the prosecution, compromise, and settlement of such claim.

                                   ARTICLE 15.

                                 CONFIDENTIALITY
                                 ---------------

         15.1.  Confidentiality.  Each party shall treat as confidential  all of
the  Confidential  Information,  refrain  from  using  any of  the  Confidential
Information  except in connection with this Agreement,  and deliver  promptly to
the other party or  destroy,  at the request of the other  party,  all  tangible
embodiments, including all copies thereof, of the Confidential Information which
are within the possession or control of such party. If either party is requested
or required  (by oral  question or request for  information  or documents in any
legal proceeding, interrogatory, subpoena, civil investigative demand or similar
process) to disclose any Confidential  Information,  such party shall notify the
other party  promptly of such request or requirement so that the other party may
seek an appropriate  protective order or waive compliance with the provisions of
this  Section  15.1.  If, in the absence of such a  protective  order or waiver,
either  party  is,  on  the  advice  of  counsel,   compelled  to  disclose  any
Confidential  Information  to any tribunal or else be liable for contempt,  such
party may disclose such  Confidential  Information to such  tribunal;  provided,
however,  that the  disclosing  party  shall use such  party's  best  efforts to
obtain,  at the  request  and  expense  of the  other  party,  an order or other
assurance  that  confidential  treatment will be accorded to such portion of the
Confidential  Information  required  to be  disclosed  as the other  party shall
designate. For purposes of this Section 15.1,  "Confidential  Information" means
any information concerning the Site or the TT&C Earth Station, the operations of
the TT&C Earth Station, the Satellite and its components, the TT&C Equipment, or
the business and affairs of DACOM or Orion or their respective Affiliates,  that
is not already  generally  available to the public.  The parties  recognize that
Orion's filing of this Agreement, including the Exhibits hereto, with the United
States  Securities  and Exchange  Commission may be required by law. Such filing
shall not be subject to or a violation of this Section 15.1.

         15.2.  Confidentiality  Agreements. At the request of Orion to DACOM at
any time during the Term of this  Agreement,  DACOM  shall  cause any  employee,
agent,  consultant  or  independent  contractor  of DACOM who may have access to
Confidential  Information  to execute  and  deliver  to Orion a  confidentiality
agreement  in  substantially  the form of  Exhibit G hereto,  with such  changes
therein  as Orion  and DACOM may  agree in light of  changes  in  circumstances,
technology and the like. If any such employee,  agent, consultant or independent
contractor  refuses to execute and  deliver  such a  confidentiality  agreement,
DACOM  shall  take such  steps as may be  necessary  or  appropriate,  including
denying such person access to the Site, so that such person will not have access
to any Confidential Information.



                                      -15-

                                   ARTICLE 16.

                                   ASSIGNMENT
                                   ----------

         16.1.  Succession and Assignment.  This Agreement shall be binding upon
and inure to the benefit of DACOM and Orion and their respective  successors and
permitted  assigns.  Neither  party may  assign  this  Agreement  or any of such
party's rights, interests or obligations hereunder without the prior approval of
the other party hereto, except as follows:

                  (a)  Orion  may  (i)  assign  any or all  of  its  rights  and
interests  hereunder  to one or more of its  Affiliates  or to a lender or other
person providing financing to Orion or such Affiliate, and (ii) designate one or
more of its Affiliates to perform its obligations hereunder;  except that in any
event Orion  shall  remain  responsible  for the  performance,  by itself or its
assignee, of all of its obligations hereunder; and

                  (b) Orion may assign and convey to any other person any or all
of its title to or rights and interests in the TT&C Equipment,  or impose a Lien
on any or all of the TT&C  Equipment,  so long as the  assignee  agrees that the
TT&C  Equipment  shall  remain  at the  Site and be  subject  to use by DACOM in
accordance with this Agreement.

         16.2. Change of Control. In the event of any merger or sale of stock or
assets of DACOM  resulting  in a change of control of DACOM,  DACOM will provide
assurance that the quality of service at the TT&C Station will be maintained.


                                   ARTICLE 17.

                     REPRESENTATIONS AND WARRANTIES OF ORION
                     ---------------------------------------

         17.1. Representations and Warranties.  Orion represents and warrants to
DACOM as follows:

                  (a)  Incorporation,  Power,  etc. Orion is a corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware,  U.S.A.,  with all  necessary  corporate  power to own and  lease  its
properties  and to carry on its  business as and where such  properties  are now
owned or leased and such business is now being carried on;

                  (b) Due  Authorization  of  Agreement;  No Conflict With Other
Instruments.  Orion has full  power and  authority  and has taken all  necessary
action to execute,  deliver and consummate this Agreement and to perform all the
terms and conditions  hereof to be performed by Orion. This Agreement is a valid
and binding obligation of Orion enforceable against Orion in accordance with its
terms,  except  as the  enforceability  hereof  may be  limited  by  bankruptcy,
insolvency  or other laws of general  application  relating to or affecting  the
enforcement of creditors' rights or by general principles of equity limiting the
availability of equitable remedies.  The execution and delivery by Orion of this
Agreement,  the consummation by Orion of the  transactions  which this Agreement
contemplates  will be  consummated  by Orion,  and  Orion's  fulfillment  of and
compliance with the terms and provisions  hereof applicable to Orion, do not and
will not (i) violate any law applicable to Orion, or (ii) conflict with,  result
in a breach of or constitute a default under Orion's  articles of  incorporation
or bylaws.


                                      -16-




         17.2.  Exclusion  of  Warranties.  ORION  MAKES NO  REPRESENTATIONS  OR
WARRANTIES OF ANY KIND OR NATURE WHATSOEVER,  WHETHER EXPRESS OR IMPLIED,  AS TO
THE CONDITION OF THE TT&C EQUIPMENT,  THE ANTENNA OR THE TT&C EARTH STATION,  OR
AS TO THEIR  SUITABILITY  FOR THEIR INTENDED USE. ALL SUCH WARRANTIES ARE HEREBY
EXPRESSLY  DISCLAIMED.  DACOM  ACKNOWLEDGES  THAT ORION MAKES NO WARRANTY OF ANY
KIND, AND IN PARTICULAR THAT THERE IS NO IMPLIED WARRANTY OF  MERCHANTABILITY OR
FITNESS FOR ANY  PARTICULAR  PURPOSE  ASSOCIATED  WITH THE TT&C  EQUIPMENT,  THE
ANTENNA OR THE TT&C EARTH STATION.

                                   ARTICLE 18.

                     REPRESENTATIONS AND WARRANTIES OF DACOM
                     ---------------------------------------

         DACOM represents and warrants to Orion as follows:

         18.1. Incorporation, Power, etc. DACOM is a corporation duly organized,
validly  existing  and in good  standing  under  the  laws of  Korea,  with  all
necessary  corporate  power to own and lease its  properties and to carry on its
business as and where such  properties are now owned or leased and such business
is now being carried on.

         18.2.  Due   Authorization   of  Agreement;   No  Conflict  With  Other
Instruments.  DACOM has full  power and  authority  and has taken all  necessary
action to execute,  deliver and consummate this Agreement and to perform all the
terms and conditions  hereof to be performed by DACOM. This Agreement is a valid
and binding obligation of DACOM enforceable against DACOM in accordance with its
terms,  except  as the  enforceability  hereof  may be  limited  by  bankruptcy,
insolvency  or other laws of general  application  relating to or affecting  the
enforcement of creditors' rights or by general principles of equity limiting the
availability of equitable remedies.  The execution and delivery by DACOM of this
Agreement,  the consummation by DACOM of the  transactions  which this Agreement
contemplates  will be  consummated  by DACOM,  and  DACOM's  fulfillment  of and
compliance with the terms and provisions  hereof applicable to DACOM, do not and
will not (i) violate any law applicable to DACOM, or (ii) conflict with,  result
in a breach of or constitute a default under the instruments and documents under
which DACOM is organized and by which DACOM is governed.

         18.3.  Government   Regulation.   The  terms  and  conditions  of  this
Agreement,  including  the  payments  provided  for  herein,  are not subject to
regulation or review by or consent from any Governmental  Body in Korea to which
DACOM  is  subject.  No  such  Governmental  Body  can  require  the  amendment,
modification  or  supplementation  of this  Agreement  without the prior written
consent of Orion.


         18.4.  Exclusion  of  Warranties.  DACOM  MAKES NO  REPRESENTATIONS  OR
WARRANTIES OF ANY KIND OR NATURE WHATSOEVER,  WHETHER EXPRESS OR IMPLIED,  AS TO
THE CONDITION OF THE TT&C EQUIPMENT,  THE ANTENNA OR THE TT&C EARTH STATION,  OR
AS TO THEIR  SUITABILITY  FOR THEIR INTENDED USE. ALL SUCH WARRANTIES ARE HEREBY
EXPRESSLY  DISCLAIMED.  ORION  ACKNOWLEDGES  THAT DACOM MAKES NO WARRANTY OF ANY
KIND, AND IN PARTICULAR THAT THERE IS NO IMPLIED WARRANTY OF  MERCHANTABILITY OR
FITNESS FOR ANY  PARTICULAR  PURPOSE  ASSOCIATED  WITH THE TT&C  EQUIPMENT,  THE
ANTENNA OR THE TT&C EARTH STATION.


                                      -17-




                                   ARTICLE 19.

                                  MISCELLANEOUS
                                  -------------

         19.1.  Further  Assurances.  DACOM and Orion shall take all appropriate
action and execute all  documents,  instruments or conveyances of any kind which
may be necessary or advisable to carry out any of the  provisions  hereof and to
consummate the transactions contemplated hereby

         19.2.  Taxes and  Expenses.  Each party hereto shall bear all taxes and
expenses incurred by such party in connection with the negotiation, preparation,
execution and  performance of this  Agreement,  except as otherwise  provided in
Sections 4.2, 9.1(d), 9.2 and Article 12.

         19.3.  Press  Releases  and Public  Announcements.  Except as otherwise
required by law or by applicable rules of any securities exchange or association
of securities  dealers,  neither party shall issue any press  release,  make any
public  announcement  or otherwise  disclose any  information for the purpose of
publication  by any print,  broadcast  or other  public  media,  relating to the
transactions  contemplated by this Agreement,  without the prior approval of the
other party.

         19.4. Notices. All notices,  demands, claims,  requests,  undertakings,
consents,  opinions  and other  communications  which may or are  required to be
given  hereunder or with respect hereto shall be in writing,  and in the English
language,  shall  be  given  either  by  personal  delivery  or  by  established
international courier, charges prepaid, or by facsimile transmission,  and shall
be deemed to have been given or made when personally  delivered,  when delivered
to the courier  company,  charges  prepaid,  and when  transmitted by facsimile,
addressed to the respective parties as follows:

                  (a)      If to Orion:

                           Orion Asia Pacific Corp.
                           2440 Research Boulevard
                           Rockville, Maryland 20850
                           Attention:  Corporate Secretary
                           Fax:  301-258-3360

                           With a copy to:

                           Orion Asia Pacific Corp.
                           2440 Research Boulevard
                           Rockville, Maryland 20850
                           Attention:  Vice President, Engineering
                           Fax:  301-258-3319

                           With copy to:

                           Reed Smith Shaw & McClay
                           1301 K Street, N.W.
                           Washington, D.C. 20005
                           Attention:  Benjamin J. Griffin, Esq.
                           Fax:  202-414-9299


                                      -18-




or to such other  address as Orion may from time to time  designate by notice to
DACOM with respect to future notices, demands and other communications to Orion;
or

                  (b)      If to DACOM:

                           DACOM Corp.
                           DACOM Building 65-228
                           3-GA, Hangang-Ro, Yongsan-Ku
                           Seoul, Korea
                           Attention:  Youn Woo Lee
                           Head of Satellite Communications Business Team
                           Fax:  82-2-220-0761

                           With copy to:

                           Bae, Kim & Lee
                           Shin-A Bldg, 39-1 Seosomun-Dong
                           Chung-Ku, Seoul, 100-752
                           Korea
                           Attention:  Suk Jin Chon, Esq.
                           Fax:  82-2-755-7676

or to such other  address as DACOM may from time to time  designate by notice to
Orion with respect to future notices, demands and other communications to DACOM.

         19.5. No Third-Party Beneficiaries. This Agreement shall not confer any
rights or remedies upon any person other than the parties to this  Agreement and
their  respective  successors  and permitted  assigns,  and shall not create the
relationship  of  principal  and  agent,  partnership  or joint  venture  or any
fiduciary relationship between DACOM and Orion.

         19.6.    Governing Law; Arbitration.

                  (a)  Governing  Law. This  Agreement  shall be governed by and
construed in accordance with the laws of the State of New York, U.S.A.,  without
giving effect to any choice or conflict of law provision or rule (whether of the
State of New York or any other jurisdiction) that would cause the application of
the laws of any jurisdiction other than the State of New York.

                  (b)  Arbitration.  All disputes,  controversies or differences
which may arise between the Parties, out of, or in relation to, or in connection
with this  Agreement,  or for the breach  thereof,  shall be finally  settled by
arbitration  in  Vancouver,   Canada,  in  accordance  with  the  rules  of  the
International  Chamber of Commerce.  The award rendered by the three arbitrators
shall be final and binding upon both Parties concerned.

         19.7.  Amendments  and Waivers.  No amendment of any  provision of this
Agreement,  and no  postponement  or  waiver  of any  such  provision  or of any
default, misrepresentation, or breach of warranty or covenant hereunder, whether
intentional or not, shall be valid unless such amendment, postponement or waiver
is in writing and signed by or on behalf of Orion and DACOM.  No such amendment,
postponement  or waiver  shall be  deemed  to extend to any prior or  subsequent
matter,  whether  or  not  similar  to the  subject-matter  of  such  amendment,
postponement  or  waiver.  No  failure or delay on the part of Orion or DACOM in
exercising any right, power or privilege under

                                      -19-




this Agreement shall operate as a waiver thereof nor shall any single or partial
exercise  of any  right,  power or  privilege  hereunder  preclude  any other or
further exercise thereof or the exercise of any other right, power or privilege.

         19.8.    Matters of Construction, Interpretation and the Like.

                  (a) Construction. Orion and DACOM have participated jointly in
the negotiation  and drafting of this Agreement.  If an ambiguity or question of
intent or interpretation arises, this Agreement shall be construed as if drafted
jointly  by both  parties  and no  presumption  or burden of proof  shall  arise
favoring or  disfavoring  either party  because of the  authorship of any of the
provisions of this  Agreement.  Any reference to any law shall be deemed also to
refer to all  rules,  regulations,  orders or  decrees  promulgated  thereunder,
unless the context requires otherwise. The word "including" shall mean including
without limitation. Each representation,  warranty and covenant contained herein
shall have independent significance. If either party breaches in any respect any
representation,  warranty,  covenant  or other  obligation  contained  herein or
created  hereby,  the fact that there exists  another  representation,  warranty
covenant or obligation  relating to the same subject  matter  (regardless of the
relative  levels of  specificity)  which has not been breached shall not detract
from or  mitigate  the  consequences  of such  breach.  The rights and  remedies
expressly  specified in this  Agreement are  cumulative and are not exclusive of
any rights or  remedies  which any party  would  otherwise  have.  The  Exhibits
specified in this Agreement are incorporated herein by reference and made a part
hereof.  The article and section  headings hereof are for  convenience  only and
shall  not  affect  the  meaning  or  interpretation  of  this  Agreement.   All
representations  and warranties in this Agreement shall survive for the duration
of the Term. The English language version of this Agreement is controlling.

                  (b) Severability. The invalidity or unenforceability of one or
more of the  provisions of this  Agreement in any situation in any  jurisdiction
shall not affect the validity or enforceability of any other provision hereof or
the validity or enforceability of the offending provision in any other situation
or jurisdiction.

                  (c) Entire  Agreement;  Counterparts.  This Agreement (and the
other documents referred to herein) constitutes the entire agreement between the
parties and supersedes any prior  understandings,  agreements or representations
by or among the  parties,  written  or oral,  to the extent  they  relate to the
subject  matter  hereof.   This  Agreement  may  be  executed  in  one  or  more
counterparts,  each of  which  shall  be  deemed  an  original  but all of which
together shall constitute one and the same instrument. It shall not be necessary
in making  proof of this  Agreement to produce or account for more than one such
counterpart.


                                   ARTICLE 20.

                                   DEFINITIONS
                                   -----------

         As used in this Agreement,  unless the context otherwise requires,  the
following terms shall have the following meanings:

                  "Act of Bankruptcy" means the institution of any proceeding by
one of the parties or by a third person  seeking to have such party  declared or
found to be insolvent or seeking  dissolution,  liquidation,  reorganization  or
similar relief with respect

                                      -20-




 to such party or such party's assets, or seeking  appointment of a receiver,  a
trustee  or other  custodian  for  such  party or such  party's  assets,  or the
voluntary  cessation or suspension of the business of such party, or any similar
relief or event, under any law relating to bankruptcy,  insolvency or protection
of creditors,  unless such party contests such proceeding and such proceeding is
dismissed within 30 days.

                  "Affiliate,"  with respect to either  party,  means any entity
that  directly or indirectly  through one or more  intermediaries  controls,  is
controlled by, or is under common control with, such party.

                  "Agreement"  means this  Agreement as originally  executed and
delivered or, if amended or supplemented, as so amended or supplemented.

                  "Antenna"  means the antenna to be purchased,  constructed and
installed by DACOM  pursuant to Section 3.2, and for purposes of this  Agreement
shall include HPA's,  LNAs, switch gear, IFL's and up and down converters to the
IF Patch Panel.

                  "Antenna Acceptance Date" has the meaning set forth in Section
5.2.

                  "Charge" means the various amounts payable pursuant to Section
9.1.

                  "Confidential  Information"  has  the  meaning  set  forth  in
Section 15.1.

                  "Construction   Specifications"   means   the   specifications
referred to in Section 3.1 and attached hereto as Exhibit B.

                  "CSM Operations" means the operation of communications  system
monitoring equipment.

                  "DACOM" means DACOM Corp., a Korean corporation.

                  "Fair Market Value" has the meaning set forth in Section 10.5.

                  "Force  Majeure"  means  one or more of the  events  or causes
referred to in Article 11.

                  "Governmental  Body"  means any  national,  state,  provincial
county, city,  municipal,  regional or local organ of government,  including all
courts, boards and agencies of any thereof.

                  "Joint  Investment   Agreement"  means  the  Joint  Investment
Agreement of even date herewith between Orion and DACOM.

                  "Korea" means the Republic of Korea.

                  "Law,"  whether or not  capitalized,  means  statutes,  rules,
regulations,  codes, plans, injunctions,  judgments, orders, decrees and rulings
of any Governmental Body.

                                      -21-



                  "Lien" means any encumbrance,  including any mortgage, deed of
trust,  pledge,  hypothecation,  assignment,  statutory or other lien,  security
interest  or other  security  arrangement,  conditional  sale,  title  retention
agreement,  financing lease and the filing of any financing statement or similar
instrument  under the Uniform  Commercial Code of any state in the United States
or comparable law of any other jurisdiction.

                 "Orion" means Orion Asia Pacific Corp., a Delaware corporation.

                  "Orion 3" has the meaning set forth in the recitals hereto.

                  "Permitted Liens" means (i) Liens and charges for then current
taxes,  levies or  assessments  not then due and payable or which remain payable
without interest or penalty, (ii) easements, rights of way, title exceptions and
reservations,  restrictions,  zoning ordinances and other  encumbrances which do
not adversely  affect the use of the properties  subject thereto for the purpose
contemplated  by this  Agreement,  (iii)  obligations  and duties of DACOM,  not
interfering  with the use of the  properties  subject  thereto  for the  purpose
contemplated by this  Agreement,  and (iv) such other Liens as Orion may approve
in Orion's sole discretion.

                  "Person,"  whether or not  capitalized,  means an  individual,
corporation,    partnership,   limited   liability   company   or   partnership,
unincorporated organization,  voluntary association, joint stock company, trust,
joint venture or Governmental Body.

                  "Satellite"  means Orion 3 and any  Replacement  Satellite  or
Successor Satellite, as those terms are defined in the Transponder Agreement.

                  "TT&C Earth  Station"  means the  facilities to be constructed
and operated on the Site pursuant to this Agreement.


                                      -22-






                  "Site" means the location for the TT&C Earth Station  selected
as provided in Section 2.1.

   
                  "Joint  Investment   Agreement"  means  the  Joint  Investment
Agreement  dated as of November 11, 1996 between DACOM and Orion,  as originally
executed  and  delivered  or, if  amended  or  supplemented,  as so  amended  or
supplemented.
    

                  "Term" means the period of time during which this Agreement is
in effect as provided in Section 10.1.

                  "TT&C" has the meaning set forth in Section 1.1.

                  "TT&C  Acceptance  Date" has the  meaning set forth in Section
5.3.

                  "TT&C Equipment" has the meaning set forth in Section 4.1.


                  WITNESS the due execution  hereof as of the day and year first
above written.




                                          
ORION ASIA PACIFIC CORP.                      DACOM CORP.



By:                                           By:
     ---------------------------------             --------------------------------
     W. Neil Bauer                                  Kwak, Chi-Young
     Chief Executive Officer                        Senior Executive Vice President


Date:                                         Date:

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

                                      -23-






                                    EXHIBIT A




                                              Confidential Treatment has been
                                              requested for this entire exhibit.


                            FUNCTIONS TO BE PERFORMED

                            BY THE TT&C EARTH STATION








                                    EXHIBIT B




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                           CONSTRUCTION SPECIFICATIONS

                           FOR THE TT&C EARTH STATION








   
                                   EXHIBIT C1
    




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                             ANTENNA SPECIFICATIONS








   
                                   EXHIBIT C2
    




                                               Confidential Treatment has been
                                              requested for this entire exhibit.



   
                  RF/IF REQUIREMENTS INCLUDING TEST TRANSLATOR
    










                                    EXHIBIT D




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                                 TT&C EQUIPMENT








                                    EXHIBIT E




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                                     TESTING








                                    EXHIBIT F




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                           INITIAL JOB SPECIFICATIONS,

                               NUMBER OF PERSONNEL

                               AND QUALIFICATIONS








                                    EXHIBIT G

                        FORM OF CONFIDENTIALITY AGREEMENT

                            NON-DISCLOSURE AGREEMENT



      This Agreement is between Orion Network  systems,  inc.,  Orion  satellite
Corporation   and  OrionNet  Inc.,  each  Delaware   Corporations,   hereinafter
collectively  referred  to  as  "ONS",  and   _________________________________,
hereinafter referred to as "Recipient".  Recipient will provide certain services
to  Orion  Network  Systems,  Inc.,  or  one of its  subsidiaries,  i.e.,  Orion
Satellite Corporation,  OrionNet Inc., and Orion Asia Pacific Corp. As a result,
Recipient  will  receive  and  have  access  to  certain  information  which  is
confidential  and proprietary to ONS. ONS desires to protect all its proprietary
and confidential  information and, toward that end,  Recipient hereby agrees and
represents as follows:

      1.  Proprietary and  Confidential  Information:  Recipient agrees that any
information  which is provided by ONS is subject to the terms of this Agreement.
Recipient agrees that all information which he receives from ONS shall be deemed
confidential,  proprietary  and  secret  whether  or not  any  such  information
received is in tangible form or is clearly marked as confidential or proprietary
or whether Recipient is expressly informed that such information is confidential
and  proprietary.  Information  which is  received  orally  shall also be deemed
confidential or proprietary.

      2.  Nondisclosure  to  Third  Parties:  The  Recipient  shall  treat  such
information received from ONS as the proprietary and confidential information of
ONS and shall not  disclose  said  Information  to any  other  person  except as
specifically  authorized in writing by ONS, and shall safeguard such Information
as he would his own  proprietary  and  confidential  information.  The Recipient
shall  immediately  notify the  disclosing  party of any subpoena,  court order,
administrative  order,  discovery request,  or other event that could compel the
recipient to disclose such  Information.  The Recipient shall cooperate with ONS
in its efforts to protect the Information from disclosure.


      3. Ownership and Use of Information:  All written or oral data received by
Recipient from ONS for purposes of performing  his consulting  services shall be
and remain the property of ONS.  Recipient shall not make copies of any tangible
data or printed  information  except upon specific written  permission from ONS.
Any  tangible  data or printed  information,  and any copies  thereof,  shall be
promptly  destroyed or returned  immediately to ONS upon the request of ONS. The
Recipient shall not use the information received from ONS for any purpose except
to perform the specific consulting services requested.


                                      G-1



      4. Term of Agreement:  The obligations under this Agreement shall continue
and survive the completion of the aforesaid consulting services and shall remain
binding  for a period  of five (5)  years  from  the date of  execution  of this
Agreement.


      5.  Employee  Access  and  Control of  Information:  The  Recipient  shall
maintain a list of the names of its employees or  associates  who have access to
the  information  and shall  furnish  such list to ONS upon  request.  Each such
employee  or  associate  shall be  deemed a  Recipient  and shall  execute  this
Non-Disclosure Agreement prior to receiving such information.


      6.  Unauthorized  Access to  Information:  If the  Recipient has reason to
believe any  information  under his control and  provided to him by ONS has been
accessed by unauthorized  individuals,  he shall immediately report the incident
fully to ONS.


      7.  Exceptions:  The obligations  contained herein shall not apply to: (a)
Information not public which hereafter is disclosed publicly without a breach of
this  Agreement;  (b)  Information  known to the recipient  prior to the time of
disclosure by the disclosing  party or  independently  developed by employees of
the recipient without access to the Information; or (c) Information disclosed in
good faith to the recipient by a third person legally entitled to disclose it.


      8.  Miscellaneous:  The obligations of the parties shall be binding on and
inure to the benefit of their respective heirs,  successors,  and assigns.  This
Agreement may be amended or modified only by a subsequent  agreement in writing.
This Agreement does not obligate either party to disclose any information to the
other or enter into any other agreement or arrangement. The parties' obligations
under  this  Agreement  shall  survive  the  termination  of  their  association
regardless of the manner of such  termination.  This Agreement shall be governed
by the laws of the State of Maryland.

I  agree  to  the  foregoing   terms  and   conditions   this  ________  day  of
________________, 1996.



Orion Network Systems, Inc.                            _________________________
                                                            Recipient



__________________________                             _________________________
Signature                                              Signature



__________________________                             _________________________
Print Name                                             Print Name



__________________________                             _________________________
Title                                                  Title

                                       G-2







                                    EXHIBIT H




                                              Confidential Treatment has been
                                              requested for this entire exhibit.



                              CONSTRUCTION CHARGES