Document:

<PAGE>

                                                                    Exhibit 4.11

                                                                    Digitalizado
                                                                       19 APR 04

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 1 of 73

                                                             SERVICE DESCRIPTION

                                AGREEMENT BETWEEN

                             HUGHES NETWORK SYSTEMS

                                       AND

                                     SATMEX

                CONCERNING SATMEX SPACE SEGMENT CAPACITY SERVICE

This Agreement (the "Agreement") is made this 20 day of January, 2000 by and
between Hughes Electronics Corporation, a corporation organized and existing
under the laws of the Sate of Delaware; through its division, Hughes Network
Systems and having its primary place of business at 11717 Exploration Lane,
Germantown, MD 20876 (hereinafter referred to as "CUSTOMER" which term shall
include its successors and permitted assigns) and Satelites Mexicanos, S.A. de
C.V., a corporation organized and existing under the laws of Mexico, and having
a place of business at Blvd. Manuel Avila Camacho, No. 40, piso 23, Colonia
Lomas de Chapultepec, C.P. 11000, Mexico, D.F. (hereinafter referred to as
"SATMEX" which term shall include its successors and permitted assigns).

                                   WITNESSETH:

WHEREAS, SATMEX has satellite capacity available on *** 36 MHz Ku1 Band
transponder, in the NAFTA beam of the Satmex 5 satellite located 116.8 degrees
West Longitude ("Satmex 5") for the purpose of providing such capacity of
CUSTOMER;

WHEREAS, CUSTOMER desires to obtain service on *** Ku1-Band transponder in the
NAFTA beam of Satmex 5; and,

(R)SATMEX is a registered trademark of SATELITES MEXICANOS, S.A. DE C.V.

***  Confidential treatment requested by Satmex

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 2 of 73

WHEREAS, CUSTOMER intends to condition its obligations under this Agreement on
obtaining the Regulatory Approval (as defined below) for such usage as provided
in this Agreement.

WHEREAS, CUSTOMER declares that it shall comply with the applicable legislation
in the countries within the region(s) where it shall utilize the Satmex 5
satellite service, and that it shall obtain the necessary authorization(s) from
the corresponding regulating institutions to install, operate or exploit the
transmitting and/or receiving ground station(s) prior to doing so.

WHEREAS, CUSTOMER is acquainted with the established legal framework in the
Mexican and international settings to which the service provided by this
Agreement is subject, and is bound to use the service rendered by SATMEX within
that applicable legal framework.

WHEREAS, this Agreement shall be in effect and the satellite services provided
hereunder shall be provided by SATMEX to CUSTOMER on a non common carrier basis
such that the terms and conditions of the use of these services are governed
solely by this Agreement and the Satellite Concession (as defined below).

NOW, THEREFORE, CUSTOMER and SATMEX, in consideration of the mutual covenants
expressed herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, agree as follows:

1.   SATMEX SERVICES

     1.1  SATMEX agrees to provide CUSTOMER with the Space Segment Capacity
          service on the terms and conditions established herein and to perform
          its other obligations hereunder. CUSTOMER agrees to pat SATMEX for
          providing such service, the price established in Section 2 herein
          (Rate and Term of Service) and to perform its other obligations
          hereunder.

          The service provided under this Agreement shall be provided during the
          Term (as defined below) as an international service of signal
          conduction via satellite, through the Mexican Satellite System, by
          means of *** meeting the "Performance Parameters" (as set forth in
          Exhibit A), as a Non-Preemptible service, in the Ku1 Band, and in the
          "NAFTA" region beam, of the Satmex 5 satellite (the "Space Segment
          Capacity"). The Space Segment Capacity initially shall consist of ***
          transponder of 36 MHz (the "Basic Capacity").

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 3 of 73

     1.2  CUSTOMER shall have the option (the "Upgrade Option") to increase the
          Basic Capacity by *** additional transponder of 36 MHz each, in
          increments of *** or *** transponder (any such additional ***
          transponder, the "Additional Capacity"), subject to the conditions
          established in Section 3 (Options or Special Terms) and *** outlined
          in Section 2.2. Additional Capacity may be added to the Space Segment
          Capacity, by exercise of the Upgrade Option as provided in Section 3,
          in accordance with the following schedule:

          For a *** month term ***: more transponders, starting on ***
          For a *** month term ***: more transponders, starting on ***
          For a *** month term ***: more transponders, starting on ***
          For a *** month term ***: more transponders, starting on ***

2.   RATE AND TERM OF SERVICE

2.1 CUSTOMER shall pay SATMEX a monthly rate for the Space Segment Capacity
service, in accordance with Paragraph 2 of the General Terms and Conditions
which are attached to and incorporated into this Agreement by reference for all
purposes, and the following table:

<TABLE>
<CAPTION>
    QUANTITY
  (TOTAL # OF
TRANSPONDERS IN     MONTHLY RATE
 SPACE SEGMENT     PER TRANSPONDER
   CAPACITY)       (U.S. DOLLARS)
---------------   ----------------
<S>               <C>
      ***               ***
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 4 of 73

2.2 Additionally, CUSTOMER shall pay to SATMEX *** additional transponders for
possible addition to the Space Segment Capacity through the exercise of the
Upgrade Option as follows ***

<TABLE>
<CAPTION>
                                                      MONTHLY RATE
                                                           PER
 ADDITIONAL                 ADDITIONAL TRANSPONDER    TRANSPONDER
TRANSPONDERS   *** PERIOD     SERVICE START DATE     (U.S. DOLLARS)
------------   ----------   ----------------------   --------------
<S>            <C>          <C>                      <C>
    ***            ***                ***                  ***
</TABLE>

Notwithstanding the foregoing provision of this Section 2.2, no *** If service
on any additional transponder starts Additional Transponder Service Start Date,
SATMEX shall give CUSTOMER ***

CUSTOMER shall have the option, exercisable on one or more occasions, ***. In
that event, CUSTOMER shall continue paying for the following *** for such
relinquished transponder(s) in accordance with this Section 2.2 herein.
Notwithstanding the exercise of any such option to cease ***, during the Term
and subject to Availability, Customer shall retain the right to elect to use
such transponders as part of the Space Segment Capacity in accordance with this
Agreement.

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 5 of 73

If prior to the commencement of service on any additional transponders
constituting the Additional Capacity, one or more Ku1 Band transponders in the
NAFTA beam of Satmex 5 fails, and SATMEX no longer will able to provide service
on all of such additional transponders to CUSTOMER in accordance with *** set
forth in Section 1.2, then (A) *** shall be due with respect to such failed
transponder from the date of such Failure until the earlier to occur of (i) such
transponder is restored to the Performance Parameters, or (ii) SATMEX is able to
meet such service dates with respect to such failed transponder by substituting
another KU1 Band transponder in the NAFTA beam of Satmex 5 meeting the
Performance Parameters, and (B) SATMEX shall refund to CUSTOMER the *** paid in
advance for such failed transponder the period after such Failure.

If the *** has not been *** by the *** by April 30, 2000, as set forth in
Section of this Service Description, and as a consequence CUSTOMER decides to
terminate this Agreement, SATMEX shall ***

Notwithstanding anything to the contrary in this Agreement, if CUSTOMER has ***
as to any additional transponder, and this Agreement is terminated wholly or
partially or an Upgrade Option expires, and any such termination is not due a
material breach by CUSTOMER, ***

CUSTOMER shall pay SATMEX the amount established in this Section 2.2 for ***
within thirty (30) days after written notification of ***

3.   OPTIONS OR SPECIAL TERMS

3.1 CUSTOMER may exercise any Upgrade Option for *** transponder by proving
written notice to SATMEX at least sixty (60) days prior to the starting date for
service on such transponders specified in Section 1.2.

CUSTOMER may start service on the Additional Capacity prior to the starting
dates specified in Section 1.2 herein, subject to Availability. "Availability"
means in respect of any transponder, that such transponder is not subject to a
binding agreement between SATMEX and a third party for its lease, sales or use
and its use by CUSTOMER hereunder is not otherwise restricted by any Mexican
law, rule or regulation applicable to SATMEX.

     Each Upgrade Option for *** transponder is separately and independently
exercisable in respect of each Upgrade Option and each transponder.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 6 of 73

If an upgrade Option is not exercised by CUSTOMER at least sixty (60) days
before the relevant starting date specified in section 1.2, CUSTOMER's right
to *** such Upgrade Option will be subject to Availability ***

3.2 SPECIAL CONDITIONS

If CUSTOMER has not started service on ***, all remaining Upgrade Options shall
expire and no from and after such date.

If CUSTOMER has not started service on ***, all remaining Upgrade Options shall
expire and *** from and after such date.

3.3 CUSTOMER will have the option to extend the Team for an *** To exercise this
option, CUSTOMER must provide a written notice to SATMEX at least *** prior to
the end of the original Term, and on or before ***.

4.   TRANSPONDER LOADING

The Space Segment Capacity service includes transponder management for the
uplink of carriers within power and bandwidth constraints of each transponder.
Any changes to CUSTOMER's initial loading plan ("Initial Loading Plan") as set
forth in Exhibit "C" shall be subject to any applicable intersatellite
coordination and the provisions of Paragraph 8 ("USE OF THE TRANSPONDERS") of
the General Terms and Conditions. Subject to SATMEX having achieved
intersatellite coordination with affected Administrations that permits such use,
which SATMEX will use its commercially reasonable efforts to achieve, CUSTOMER
may use the Space Segment Capacity with the transmitting remote terminals
described on Exhibit C, Sections 4 and 5. SATMEX acknowledges that such two-way
service would involve a network of widely deployed consumer transmit antennas,
and agrees to work in good faith with CUSTOMER to make appropriate modifications
to Exhibit D to accommodate such plans of CUSTOMER.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 7 of 73

5.   TERM

The "Term" of this Agreement is ***, from January 20, 2000 through January 19,
2005, subject to extension pursuant to Section 3.3 above.

6.   ***

Customer and SATMEX agree, that with LORAL SKYNET's assistance each will work in
good faith to explore ***. If both parties reach an agreement on a *** before
March 15, 2000, the *** shall be modified in accordance with such agreement. If
the Parties do not reach an agreement on a *** before March 15, 2000, the ***
will remain as set forth in ***.

7.   NOTICES

All notices, demands, requests, or other communications which may be or are
required to be given, served, or sent by one party to the other party pursuant
to this Agreement (except as otherwise specifically provided in this Agreement)
shall be in writing and shall be delivered by confirmed facsimile, confirmed
overnight mail, by hand or mailed by first-class, registered or certified mail,
return receipt requested, postage prepaid, addressed as follows:

     (i) If to CUSTOMER:   Hughes Network Systems
                           11717 Exploration Lane
                           Germantown, MD 20876
                           Phone: 301-212-7818
                           Fax: 301-548-1925
                           Attn: David Zatloukal

     Copy to:              Hughes Network Systems
                           11717 Exploration Lane
                           Germantown, MD 20876
                           Phone: 301-212-7818
                           Fax: 301-548-1925
                           Attn: Phil O'Brien

***  Confidential treatment requested by Satmex

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 8 of 73

     (ii) Billing Contact: Hughes Network Systems
                           11717 Exploration Lane
                           Germantown, MD 20876
                           Phone: 301-428-5500
                           Fax: 301-428-1868
                           Attn: Accounts Payable

     Copy to:              Hughes Network Systems
                           11717 Exploration Lane
                           Germantown, MD 20876
                           Phone: 301-212-7818
                           Fax: 301-548-1925
                           Attn: Phil O'Brien.

     (ii) If to SATMEX:    Satelites  Mexicanos, S.A. de C.V
                           Blvd. M. Avila Camacho
                           No. 40, piso 23
                           Colonia Lomas de Chapultepec
                           C.P. 11000
                           ATTN: Juan Manuel Pinedo
                           Executive Director - Sales and Marketing
                           Phone: (525) 201-0801

     Copy to:              Satelites Mexicanos, S.A. de C.V
                           Blvd. M. Avila Camacho
                           No. 40, piso 23
                           Colonia Lomas de Chapultepec
                           ATTN: Carmen Ochoa A.
                           General Counsel
                           Phone: (525) 201-0858
                           Fax: (525) 201-0868

Either party may designate by notice in writing a new address or addressee, to
which any notice, demand, request, or communication may thereafter be so given,
served or sent. Each notice, demand, request, or communication which shall be
delivered, shall be deemed sufficiently given, served, sent or received for all
purposes at such time as it is delivered to the addressee named above as to each
party, with the signed messenger receipt, return receipt, or the delivery
receipt being deemed presumptive evidence of such delivery.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                    Page 9 of 73

8.   RELIABILITY:

The Space Segment Capacity shall be available twenty-four (24) hours per day,
every day during the Term, except for interruptions expressly permitted under
this Agreement. *** An "Annual Period" means a period of twelve (12) consecutive
months commencing on, as the case may be, either (i) the date hereof or (ii) any
anniversary of the date hereof.

9.   ***

                                       ***

Notwithstanding anything to the contrary in this Agreement, if the *** has not
been obtained on or before April 30, 2000, then CUSTOMER may, at its option,
terminate this Agreement by giving written notice to SATMEX within sixty (60)
days after April 30, 2000, without incurring any obligation to ***. If CUSTOMER
elects to so terminate this Agreement, neither party shall thereafter have any
rights or obligations hereunder except for those obligations incurred prior to
the date of such termination.

10.  ENTIRE AGREEMENT

This Agreement along with the General Terms and Conditions and Exhibits A, B, C
and D, all of which are incorporated herein by reference, constitutes the entire
agreement between CUSTOMER and SATMEX relative to the Space Segment Capacity
service, and this Agreement can be altered, amended or revoked only by an
instrument in writing signed by both CUSTOMER and SATMEX. CUSTOMER and SATMEX
agree hereby that any prior or contemporaneous oral and written agreements
between and among themselves and their agents and representatives relative to
the subject of this Agreement are superseded and replaced by this Agreement. Any
provision of this Agreement found to be unenforceable or invalid by a court of
competent jurisdiction shall in no way affect the validity or enforceability of
any other provision except that if such invalid or unenforceable provision
provided a material benefit to a party hereto, such party shall have the right
to terminate the Agreement without liability to the other party, except for
payment allowance or service obligations incurred prior to such termination.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 10 of 73

11.  REPRESENTATIONS AND WARRANTIES OF THE PARTIES.

Each of the CUSTOMER and SATMEX represents and warrants to the other that:

     a) Authority, No Breach. It has the right, power and authority to enter
into, and perform its obligations under, this Agreement. The execution, delivery
and performance of this Agreement will not result in the breach or
non-performance of any agreement it has with third parties or to which any of
its assets is subject.

     b) Corporate Action. It has taken all requisite corporate action to approve
the execution, delivery and performance of this Agreement, and this Agreement
constitutes a legal, valid and binding obligation upon itself in accordance with
its terms.

     c) Litigation. To the best of its knowledge, there is no outstanding or
threatened judgement, threatened or pending litigation or proceeding, involving
or affecting the transactions provided for in, or contemplated by, this
Agreement.

     d) No Broker. There is no broker, finder or intermediary involved on its
behalf in connection with the negotiations and discussions incident to the
execution of this Agreement, nor any broker, finder or intermediary who might be
entitled to a fee or commission upon the consummation of the transactions
contemplated by this Agreement.

     (e) ***. The Parties shall use commercially reasonable efforts, and
cooperate in good faith, to obtain the ***. CUSTOMER shall furnish to SATMEX all
necessary technical data as is reasonably requested in connection with ***

12.  ADDITIONAL REPRESENTATIONS, WARRANTIES AND COVENANTS OF SATMEX.

SATMEX further represents and warrants to, and covenants with, CUSTOMER that:

     (a) Authority of SATMEX. SATMEX holds the legal right and authority from
the applicable Mexican regulators, pursuant to the provision of the Mexican
Federal Telecommunication Law ("Ley Federal de Telecommunicaciones") and of the
Mexican Regulations of Communication Via Satellite ("Reglamento de Comunicacion
Via Satelite"), to occupy the 116.8 degrees West Longitude Geostationary orbit
position with Satmex 5, to exclusively exploit the "C" and "Ku" frequency bands,
to transmit and receive signals in such frequency bands, and to provide the
Space Segment Capacity to CUSTOMER in accordance with the terms of this
Agreement (the "Satellite Concession"). SATMEX shall use its reasonable efforts
to

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 11 of 73

maintain throughout the Term, the Satellite Concession and all other applicable
governmental licenses, permits and other approval, and shall comply with all
applicable government regulations regarding the operation of Satmex 5, the Space
Segment Capacity and this Agreement.

     (b) Right to Receive the Service. SATMEX will provide the Space Segment
Capacity to CUSTOMER in accordance with the terms and conditions established in
this Agreement free from any and all liens, charges, claims or encumbrances of
any third party.

     (c) Interference. SATMEX has no knowledge as of the date of this Agreement
of any third party or of any device or transmission of any kind, that can
reasonably be expected to cause or result in Interference with the use of any of
the Space Segment Capacity or cause physical harm to any of the Space Segment
Capacity. "Interference" means any unwanted energy that is received along with
the transmitted signal that disrupts, causes degradation or otherwise decreases
the quality of CUSTOMER's signal. SATMEX will use its reasonable efforts to
minimize adjacent channel and adjacent satellite interference. SATMEX has not
and will not contract to provide service to any third party that (i) while
operating under the terms of a contract with SATMEX, can reasonably be expected
to cause or result in interference with the use of any of the Space Segment
Capacity or cause physical harm to any of the Space Segment Capacity, or (ii)
would otherwise prevent SATMEX from fulfilling its obligations hereunder.

     (d) Coordination. Satmex 5 has been coordinated with the applicable
governing bodies of the United States, Canada and all other relevant
jurisdictions and administrations for the provision of the Space Segment
Capacity in accordance with this Agreement, except to the extent that the
Regulatory Approval is necessary to accommodate CUSTOMER's particular intended
use of the Space Segment Capacity.

     (e) Further Assurances. SATMEX will use commercially reasonable efforts to
assist CUSTOMER in CUSTOMER's efforts to obtain any and all appropriate
governmental licenses, consents, concessions, permits and other approvals
related to the CUSTOMER's use of the Space Segment Capacity.

     (f) Performance of Space Segment Capacity. As of the date hereof, the ***
Ku1 Band transponder in the NAFTA beam of Satmex 5 that constitute the Space
Segment Capacity meet the Performance Parameters.

13.  FORCE MAJEURE.

No failure delay in the performance of a party hereunder shall be a breach of
this Agreement if such failure or delay results from a Force Majeure Event.
"Force Majeure Event" means any cause or aggregation of causes that, even after
a party's reasonable efforts to overcome such cause or causes, renders such
party wholly or partially unable to perform its obligations under

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 12 of 73

this Agreement due to acts of God, war, riots, civil insurrections, labor
disputes, governmental orders, adverse weather conditions, fires, explosions,
earthquakes, epidemics, or plagues, or any other events or circumstances beyond
the reasonable control of such party. No force Majeure Event affecting SATMEX,
shall relieve SATMEX of its obligation to provide credit allowances, or to make
refunds to CUSTOMER of service payments ***, as otherwise provided hereunder; or
no Force Majeure Event affecting CUSTOMER shall relieve CUSTOMER of its payment
or other obligations due under this Agreement.

14.  CONFLICT.

In the event of any conflict between the terms of this Service Description and
the attached General Terms and Conditions or Exhibits A, B, C, and D, the terms
of this Service Description shall prevail.

15.  INJUNCTIVE RELIEF.

Nothing in this Agreement shall be construed as limiting in any way the right of
a party to seek from a court of competent jurisdiction injunctive relief with
respect to any actual or threatened breach of this Agreement.

16.  SURVIVAL.

Each of the warranties, representations and covenants of the parties contained
or made pursuant to this Agreement shall survive the execution and delivery of
this Agreement.

IN WITNESS WHEREOF, the parties hereto have entered into this Agreement as of
January 20, 2000, and agree to the terms and conditions set forth herein.

CUSTOMER                                SATMEX

By: /s/ David Zatloukal                 By: /s/ Lauro Gonzalez Moreno
    ---------------------------------       ------------------------------------
Title: AVP - HNS                        Title: Chief Executive Officer
Date: 1/20/00                           Date: 2/01/00

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 13 of 73

                          GENERAL TERMS AND CONDITIONS
                                     OF THE
                                AGREEMENT BETWEEN
                                    CUSTOMER
                                       AND
                                     SATMEX
                    CONCERNING SATMEX SPACE SEGMENT CAPACITY

1.   WARRANTY EXCLUSIONS

     SATMEX WARRANTS TO CUSTOMER THAT SATMEX WILL PERFORM THE SPACE SEGMENT
CAPACITY SERVICES DESCRIBED HEREIN IN ACCORDANCE WITH GENERALLY ACCEPTED
INDUSTRY STANDARDS. SUBJECT TO THE ABOVE, SATMEX, ITS PARENT, THEIR SUBSIDIARIES
AND THEIR AFFILIATES, SUBCONTRACTORS AND SUPPLIERS MAKE NO WARRANTY, EXPRESS OR
IMPLIED, REGARDING THE PERFORMANCE OF THE SERVICE (AS DEFINED BELOW), AND
SPECIFICALLY DISCLAIM ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

2.   PAYMENT OF CHARGES

     A monthly charge applies each month or fraction thereof that Space Segment
Capacity service is furnished hereunder ("Service"). Monthly charges start on
the first day the Service begins pursuant to Section 1, ("SATMEX SERVICES") of
the main agreement between SATMEX and CUSTOMER (the "Service Description") to
which these General Terms and Conditions are attached, together with the
Exhibits attached thereto (collectively, this "Agreement"). Charges accrue
through and include the day that the Service is discontinued. If the billing
date and the date that the Service is started, changed, or discontinued do not
coincide, the charges will be adjusted to reflect the fractional part of the
month involved. Monthly charges will be billed 30 days in advance. For billing
purposes each month is considered to have thirty (30) days. Payment is due on or
before the first day of each month for Services to be provided that month, as
specified on the bill. Service may be discontinued for nonpayment of a bill ten
(10) days after notice of such nonpayment is sent.

All refunds to CUSTOMER provided for in this Agreement, shall be made by SATMEX
within thirty (30) days of the event giving rise to such refund.

3.   INTEREST ON LATE PAYMENTS

     Any late payments by either party of amounts due and payable hereunder
(including but not limited to, specified payments, damages, and indemnification)
to the other party shall be with interest at the rate of *** per annum, or the
highest legally permissible rate of interest, whichever is higher, and all
interest or discounting shall be compounded on a monthly basis. Such late
payments, including interest, shall be payable with the amount due and
calculated from the date payment was due until the date it is received by the
correspondent party.

4.   TAXES

     The parties agree that each party shall pay the taxes and tariffs
applicable to such Party in connection with this Agreement, according to the
legal ordinances in force in their respective countries.

5.   TYPE OF SERVICE

NON-PREEMPTIBLE SERVICE

     Except as provided in Paragraph 7 ("RESTORATION OF A FAILED TRANSPONDER")
herein, "Non-Preemptible" transponders are not protected in the event of failure
and are not subject to preemption to restore any other customer's protected
service.

6.   TRANSPONDER INTERRUPTION OF FAILURE

(R)SATMEX is a registered trademark of SATELITES MEXICANOS

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 14 of 73

     For the purposes of this Agreement; (i) an interruption ("Interruption"
shall be defined as any period during which a transponder fails to meet the
Performance Parameters set forth in Exhibit A) and (ii) a failure ("Failure")
shall be defined as any of the following:

     a)   the inability, for any period of three (3) consecutive hours, to pass
          signals through a transponder when it is illuminated with any
          authorized transmitted carrier,

     b)   an Interruption for any period of twenty four (24) consecutive hours,
          or

     c)   ten (10) or more Interruptions of at least one (1) minute or longer
          per occurrence within any period of thirty (30) consecutive days.

For purpose of this Agreement, measurement of periods of Interruption or Failure
shall commence upon the earlier of CUSTOMER's written notification to SATMEX's
Iztapalapa Earth Station or SATMEX's knowledge of the Interruption or Failure,
and CUSTOMER shall vacate its signal from the affected transponder to permit
SATMEX's verification of the existence of the Interruption or Failure. An
Interruption or Failure period ends when the affected transponder is operative
and meets the Performance Parameters. If CUSTOMER reports a transponder to be
interrupted or failed but declines to release it for testing and repair, it is
considered to be impaired, but not Interrupted or Failed.

7.   RESTORATION OF A FAILED TRANSPONDER

NON-PROTECTED TRANSPONDER

     In the event any non-protected transponder provided hereunder experiences a
Failure, or an event occurs that makes a Failure certain to arise after the
passage of time (as determined by SATMEX), CUSTOMER shall, as soon as possible,
notify SATMEX, confirmation in writing to follow, and SATMEX immediately will
endeavor to, subject to Availability, using commercially reasonable efforts, and
giving CUSTOMER priority other all over users that do not have Protected
Capacity and that contracted for service after the date of this Agreement, take
the following actions in the order of priority listed: (i) restore the service
on the affected transponder by using spare equipment on Satmex 5; or (ii)
restore the Service on an Available transponder of the same frequency band and
in the same coverage beam as that of the failed transponder on Satmex 5
(provided that transponder meets the Performance Parameters, it will thereafter
become the non-protected transponder, through which the Service will be
provided); or (iii) restore the Service by taking reasonable measures such as
those described under the heading "Other Capacity" below. "Protected Capacity"
means the space segment capacity that has total back-up in the same satellite or
in another SATMEX satellite, except when Failure or Interruption is due to
user's action or omission that is not a SATMEX guideline.

SATMEX will not, voluntarily allow any Interruption or Failure to occur, unless
such Interruption is necessary to maintain the health of the satellite, or is
otherwise required by governmental authorities, as reasonably determine by
SATMEX. SATMEX shall make reasonable efforts to provide advance notice and
coordinate with CUSTOMER any Interruption due to maintaining the health of the
satellite, and SATMEX shall use commercially reasonably efforts to ensure that
any Interruption due to maintaining the health of the satellite causes the least
possible interference inconvenience or damage to CUSTOMER.

OTHER CAPACITY

If any portion of the Space Segment Capacity fails to meet the Performance
Parameters due to a Failure of Satmex 5, including without limitation, any such
Failure resulting from a Force Majeure Event, the SATMEX shall use commercially
reasonable efforts to find alternate satellite capacity suitable for CUSTOMER,
including the provision of intersatellite protection, if available, at rates to
be agreed upon by both parties. In such event, CUSTOMER may, in its sole
discretion accept or reject such alternative satellite capacity within
twenty-four (24) hours of SATMEX having offered such alternate satellite
capacity to CUSTOMER, and SATMEX shall have no liability whatsoever.

If Customer declines such alternate satellite capacity, it shall have the option
to terminate this Agreement pursuant to Paragraph 18.2 hereof.

8.   USE OF THE TRANSPONDERS

     The Service includes transponder management for the uplink of carriers as
set forth in Section 4 ("TRANSPONDER LOADING") of the Service Description, to
each of the transponders provided hereunder.

For purposes of this Agreement the carriers will be classified and defined as
follows:

     (1)  Digital Carriers: A "Digital Carrier" is a radio signal whose carrier
          phase and or amplitude takes on discrete values during a modulation
          symbol in

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 15 of 73

          response to balanced amplitude modulation by a raised cosine (or other
          industry standard) filtered impulse train representing digital
          information for any purpose including but not limited to video, voice,
          or data. Digital Carrier types include Binary Phase Shift Keying
          Quadrature Phase Shift Keying, 8 state Phase Shift Keying, 16 state
          Quadrature Amplitude Modulation and other industry standard data
          carrier types.

     If CUSTOMER desires to transmit to any transponder provided under the
Service Description in any manner different ("Different Loading Plan") than as
specified in such transponder's initial loading plan, then the following shall
apply.

     (i) If the Different Loading Plan involves Digital Carriers, then CUSTOMER
     may implement such Different Loading Plan at any time, provided that
     CUSTOMER shall provide the Different Loading Plan to SATMEX, no later than
     fourteen (14) days after the start date of such Different Loading Plan,
     identifying its characteristics. In the event that SATMEX is required to
     perform any maintenance or troubleshooting activity involving the affected
     transponder, CUSTOMER must furnish the Different Loading Plan on demand,
     and

     (ii) Notwithstanding anything in the Service Description to the contrary,
     CUSTOMER may request SATMEX's authorization for more than one Different
     Loading Plan for any transponder provided hereunder, for any period of
     time, during the term of the Agreement, and SATMEX may grant or deny such
     request in its reasonable discretion.

9.   LIMITATION OF LIABILITY

9.1  SATMEX SHALL ONLY BE LIABLE FOR ***

9.2  SATMEX'S LIABILITY TO CUSTOMER FOR CREDITS, REIMBURSEMENTS OR OTHER
     PAYMENTS OF ANY NATURE WHATSOEVER, ***

9.3  EXCEPT FOR CASES INVOLVING SATMEX'S WILLFUL MISCONDUCT OR GROSS NEGLIGENCE,
     SATMEX SHALL NOT INCUR ANY LIABILITY WHATSOEVER FOR DAMAGES SUFFERED BY
     CUSTOMER OR THIRD PARTIES, DUE TO ANY FAILURE OR INTERRUPTION OF SERVICE OR
     OTHERWISE IN CONNECTION WITH THIS AGREEMENT, REGARDLESS OF WHETHER THE SAME
     ARE DERIVED FROM FORCE MAJEURE EVENTS, DELAY IN DELIVERY, DEFICIENT
     FUNCTIONING, FAILURES THAT MIGHT APPEAR IN THE SPACE SEGMENT CAPACITY, OR
     SERVICE INTERRUPTIONS IN THE PART CORRESPONDING TO THE SPACE SEGMENT
     CAPACITY OR EQUIPMENT OWNED BY SATMEX OR CUSTOMER, OR ANY OTHER REASON.

9.4  WITHOUT LIMITING THE GENERALITY OR PARAGRAPH 9.3, SATMEX IS NOT LIABLE FOR
     DAMAGES ASSOCIATED WITH NOR SHALL IT HAVE ANY OBLIGATION WITH RESPECT TO
     SERVICE CHANNELS, OR EQUIPMENT, WHICH SATMEX DOES NOT FURNISH.

9.5  SATMEX, ITS PARENT, THEIR SUBSIDIARIES AND AFFILIATES, AND THE DIRECTORS,
     EMPLOYEES, AGENTS AND SUBCONTRACTORS OF ALL OF THEM, SHALL BE INDEMNIFIED,
     DEFENDED, AND HELD HARMLESS BY CUSTOMER AGAINST ALL CLAIMS, LOSSES, OR
     DAMAGES RESULTING FROM THE USE OF SERVICES FURNISHED PURSUANT TO THIS
     AGREEMENT INVOLVING:

     9.5.1. CLAIMS FOR LIBEL, SLANDER, INVASION OF PRIVACY, INFRINGEMENT OF
          COPYRIGHT, OR ANY CLAIM BASED ON THE CONTENT OF ANY TRANSMISSION
          ARISING FROM ANY COMMUNICATION USING THE SPACE SEGMENT CAPACITY DURING
          THE TERM;

     9.5.2. CLAIMS FOR PATENT INFRINGEMENT ARISING FROM COMBINING OR USING THE
          SERVICE FURNISHED HEREUNDER BY SATMEX IN CONNECTION WITH FACILITIES OR
          EQUIPMENT FURNISHED BY OTHERS; OR

                               SATMEX PROPRIETARY

*** Confidential treatment requested by Satmex.
<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 16 of 73

     ***

9.6  NO LICENSE UNDER PATENTS (OTHER THAN THE LIMITED LICENSE TO USE) IS GRANTED
     BY SATMEX OR SHALL BE IMPLIED OR ARISE BY ESTOPPEL, WITH RESPECT TO ANY
     SERVICE OFFERED UNDER THIS AGREEMENT.

9.7  NOTWITHSTANDING ANYTHING TO THE CONTRARY, NEITHER PARTY SHALL BE LIABLE FOR
     INCIDENTAL, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, OR FOR LOST
     PROFITS, SAVINGS OR REVENUES OF ANY KIND, REGARDLESS OF WHETHER IS ADVISED
     OF THE POSSIBILITY OF SUCH DAMAGES, THIS EXCLUDES CUSTOMER's OBLIGATION FOR
     EARLY TERMINATION PAYMENT.

9.8  CUSTOMER, its parent, their subsidiaries and affiliates, and the directors,
     and employees, agents and subcontractors of all of them, shall be
     indemnified, defended, and held harmless by SATMEX against all claims,
     losses or damages resulting form the use of the Space Segment Capacity
     furnished pursuant to this Agreement involving claims for infringement of
     copyright, patent or any other intellectual property rights, caused by any
     satellite communications equipment, software or other protected material
     used by SATMEX in providing service to CUSTOMER under this Agreement.

10.  CREDIT ALLOWANCES

     *** For calculation of such credit allowance each month is considered to
have thirty (30) days. Such credit allowance will be given for ***:

     ***

11.  CONTENT OF TRANSMISSIONS

          CUSTOMER is solely responsible for the content of transmissions using
the transponder and related service.

12.  SCRAMBLING

          Prior to commencing use of the Service provided under this Agreement,
CUSTOMER, at its expense, shall provide SATMEX with end user equipment that
reasonably may be required for signal monitoring.

13.  REFUSAL OF SERVICE

SATMEX may terminate, prevent or restrict any communications using the Service
provided hereunder as a means of transmission if such actions (1) are undertaken
at the direction of a governmental agency with jurisdiction (including the U.S.
Federal Communications Commission and Mexican Telecommunication Federal
Commission "COFETEL") or (2) are taken subsequent to the institution against
SATMEX, CUSTOMER or any permitted assignees, any legal entity affiliated with
any of them, or any of the directors, officers, agents or employees of the
parties, permitted assignees or their affiliates, of criminal, or administrative
proceedings or investigations based upon the content of such communications,
other than civil proceedings, SATMEX will not terminate, prevent or restrict
CUSTOMER's transmissions pursuant to such clause if, immediately upon
notification by SATMEX of the institution of

                               SATMEX PROPRIETARY

*** Confidential treatment requested by Satmex.
<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 17 of 73

such proceedings, CUSTOMER is able to satisfy SATMEX subject to SATMEX's
reasonable discretion that within forty-eight (48) hours the aforementioned
proceedings will be resolved to SATMEX's reasonable satisfaction or the relevant
transmissions will terminate in the relevant jurisdiction and that they will not
reoccur in the relevant jurisdiction. Nothing in this Paragraph shall affect any
other term or condition hereof including without limitation any obligation under
Paragraph 9 ("LIMITATION OF LIABILITY") or any obligation to pay the rates
applicable to this Agreement.

14.  ASSIGNMENT/RESALE

     14.1 ASSIGNMENT

     14.1.1 CUSTOMER's ASSIGNMENT:

CUSTOMER shall have the express right to assign this Agreement without SATMEX's
consent in connection with the merger of CUSTOMER or the sale of substantially
all of Hughes Network Systems' VSAT and/or DIRECPC business, provided that, (1)
CUSTOMER shall give SATMEX thirty (30) day's prior written notification, and (2)
any third parties which survive such merger or sale shall comply with the
requirements stated in next paragraph. CUSTOMER acknowledges and agrees that
notwithstanding anything to the contrary contained in this Agreement, CUSTOMER
shall not transfer, nor assign any of its rights or obligations under this
Agreement to any third parties. *** without SATMEX's prior written consent,
which shall not be unreasonably withheld or delayed.

Any such third parties must comply with all of SATMEX's legal, technical,
economic and other conditions and requirements under this Agreement.

     14.1.2 SATMEX's ASSIGNMENT:

SATMEX shall have the express right to assign this Agreement including its
rights, duties and obligations hereunder, to its parent corporation or any
present or future affiliate or subsidiary of SATMEX, or in connection with the
merger or acquisition of its satellite business; provided, that in any such
case, such assignee also is capable of and has the right to operate Satmex 5 and
the Space Segment Capacity, and complies with the Satellite Concession to
provide the service, and possesses all other rights and assets needed to perform
this Agreement.

     14.2 RESALE

     In the event CUSTOMER desires to resell all or part of the capacity (part
of capacity can be resold only as part of complete transponders), CUSTOMER must
first give written notice to SATMEX.

     CUSTOMER may only resell the entire Space Segment Capacity or complete
transponders constituting the Space Segment Capacity to any third party, if (i)
such resale contains a material value added component and is therefore, not a
pure resale of any portion of the capacity (for example, as part of the
provision of a VSAT network or as part of the provision of a service similar to
DIRECPC); and (ii) if such third parties agree in writing to comply with all the
legal, technical and financial conditions of this Agreement, including the
parameters and recommendations established in Paragraph 15 (NON-INTERFERENCE),
herein. With the prior written consent of SATMEX, CUSTOMER may resell the entire
Space Segment Capacity or complete transponders constituting the Space Segment
Capacity without regard to the foregoing restrictions, such consent not to be
unreasonably withheld or delayed, provided that SATMEX does not have Ku1 Band
capacity Available at the time of such resale in the NAFTA beam of Satmex 5.

15.  NON-INTERFERENCE

CUSTOMER's radio transmissions (and those of its uplinking agents) to the
satellite shall comply, in all material respects, with all FCC, and all other
governmental (whether international, federal, state, municipal, or otherwise)
statues, laws, rules, regulations, ordinances, codes, directives and orders, of
any such governmental agency, body, or court (collectively "Laws") applicable to
it regarding the operation of the satellite transponder, and any backup
transponders to which CUSTOMER is given access pursuant to this Agreement and
shall not interfere with the use of any transponder or cause physical harm to
the Space Segment Capacity to which CUSTOMER is given access pursuant to this
Agreement, any other transponders, or to the satellite on which the Transponder
is located. Further, CUSTOMER will coordinate with (and will require its
uplinking agents to coordinate with) SATMEX, in accordance with procedures
reasonably established by SATMEX and uniformly applied to all users of
transponders on the satellite, its transmissions to the satellite, so as to
minimize adjacent channel and adjacent satellite interference. For purposes of
this Paragraph 16, interference shall also mean acts or omissions, which cause a
transponder to fail to meet its transponder performance parameters. Nothing in
the foregoing shall prevent CUSTOMER from using the Space Segment Capacity in
accordance with Exhibits hereto.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 18 of 73

Notwithstanding the aforementioned, the ground station(s) through which the
service is provided shall satisfy the technical specifications and features set
forth in the Exhibits hereto and shall fulfill among others, recommendation
ITU-R. S.580-5 and operate with agile and fractionary step frequency
synthesizers. The above are described in the technical Exhibits hereto.

16.  IMPROPER ILLUMINATION.

SATMEX transmission parameters are as set forth in Exhibit B ("Ku1-Band
TRANSMISSION PARAMETERS"). In the event improper illumination of any transponder
provided under the Service Description is detected by SATMEX, CUSTOMER shall be
notified and CUSTOMER shall take immediate corrective action to stop the
improper illumination within five (5) minutes of notification from SATMEX.
Improper Illumination shall include transmissions which are other than as
described in Exhibit B ("TRANSMISSION PARAMETERS") and C ("PARAMETER
SPECIFICATIONS FOR MASTER GROUND STATIONS AND REMOTE EARTH STATIONS"),
transmissions at an incorrect frequency, transmissions at excessive power levels
or any illumination which can cause harm or interference to any transponder or
to any satellite. Nothing in the foregoing shall prevent CUSTOMER from using the
Space Segment Capacity in accordance with Exhibits hereto. Charge of ***
dollars per minute, to a maximum equal to twelve months billing per applicable
transponder per incidence, may apply for improper illumination that continues
beyond a thirty (30) minute period after notification, or attempted notification
if there is no answer at the telephone number provided by CUSTOMER. SATMEX will
exercise reasonable good faith in determining whether to apply the charge
described herein, which determination will take into consideration whether
CUSTOMER used its reasonable best efforts to resolve the problem as quickly as
possible. Furthermore, if immediate corrective action is not taken by CUSTOMER,
SATMEX shall have the right to take immediate action to protect its services or
its interests, including but not limited to suspending CUSTOMER's service on the
affected transponder, until CUSTOMER resolve such problem.

17.  GENERAL OBLIGATIONS

     In the event CUSTOMER breaches any of its obligations in connection with
the usage procedures established in Exhibit "D" and the restrictions described
in the Agreement, including, without limitation, transponder usage,
non-interference, government regulations, preemptive rights, and no-transfer,
then SATMEX may, in its sole discretion and in addition to the exercise of its
other rights against CUSTOMER, require CUSTOMER to cease transmissions to any or
all of the affected transponder(s) provided hereunder and take any actions
necessary to enforce SATMEX's rights. CUSTOMER will pay to SATMEX all expenses
(including attorney's fees) incurred in connection with SATMEX's enforcement
against CUSTOMER arising out of CUSTOMER's use of the affected transponder(s) in
violation of this Agreement.

18.  TERMINATION

     The Agreement may be terminated prior to the end of its Term as follows:

     18.1 In the event of the breach of any of the material terms and
          conditions, representations and warranties contained herein, the
          non-breaching party may terminate upon written notice to the other, if
          the breaching Party does not cure its breach within thirty (30) days
          after notice thereof.

     18.2 In the event of a Failure, of a Non-Preemptible transponder for which
          SATMEX does not provide an acceptable restoration, as provided in
          Paragraph 7, within 10 days, the CUSTOMER may terminate this Agreement
          with references to that transponder, without liability except for such
          services as have already been received, which shall be paid to SATMEX
          in accordance with this Agreement. The termination date will be
          considered to be the date of the Failure.

          In the event of any termination of this Agreement, SATMEX shall ***

     18.3 In the event CUSTOMER does not take immediate corrective action to
          stop improper illumination as established in Paragraph 16 ("IMPROPER
          ILLUMINATION").

19.  EARLY TERMINATION CHARGE

Except as set forth in Paragraphs 18.2 ("TERMINATION"), 20 ("CHANGES IN
OPERATIONS OR PROCEDURES"), and 22 ("FCC COMPLIANCE") hereof and Section 8 and 9
of the Service

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 19 of 73

Description, no early termination date is provided under the Agreement.
Therefore, in the event CUSTOMER orders the discontinuance of Service, for any
other reason, effective on any date prior to the termination date set forth in
Section 5 of the Service Description, or if the Agreement is terminated by
SATMEX due to CUSTOMER's breach with respect to the Service provided under the
Agreement prior to the termination date set forth in Section 5 of the Service
Description, an early termination charge ("Early Termination Charge") shall
apply as follows: The Early Termination Charge shall be an amount equal to the
lesser of *** or (ii) the aggregate rate for Service through the end of the Term
of Service for the affected transponder(s). Early Termination Charges shall be
due and payable upon receipt by CUSTOMER of an invoice for such charges. Early
termination charges apply regardless of whether or not Service has begun, except
if service has not been provided because *** has not been obtained in accordance
with Section 9 of the Service Description, in which case CUSTOMER shall not be
liable for the Early Termination Charge.

     In the event of partial termination, the aforementioned payment shall be
applied only to the affected transponder(s).

     Payment of the Early Termination Charge shall be SATMEX's sole and
exclusive remedy hereunder for any event giving rise thereto, provided, however,
that any such advance termination shall not release CUSTOMER from outstanding
balances which includes but is not limited to billed amounts, moratorium
interests and any other charges.

     SATMEX reserves the right to assign the satellite capacity released due to
advance cancellation or termination to another interested party, as of the day
following the termination or cancellation date.

20.  CHANGES IN OPERATIONS OR PROCEDURES

Except to the extent necessary to allow CUSTOMER to use the space segment
capacity in accordance with the Exhibits hereto, SATMEX shall have no obligation
to change or modify any of its components, operations, or procedures to be
compatible with CUSTOMER. Prior to making any changes in SATMEX's operations,
procedures, or Transmission Parameters that will or are reasonably expected to
(i) materially affect any facilities, CUSTOMER equipment, or CUSTOMER
communications system, or (ii) require their modification in order to be used
with any transponder provided pursuant to this Agreement, SATMEX shall seek
CUSTOMER'S consent, which consent will not be unreasonably withheld. SATMEX
shall notify CUSTOMER of any such proposed change and the expected impact no
less than thirty (30) days prior to its proposed implementation. CUSTOMER and
SATMEX shall engage in good faith discussions regarding the proposed change to
find a suitable solution. Notwithstanding the above, SATMEX may implement those
changes required in order to protect the health of the satellite or transponders
provided under this Agreement and will provide CUSTOMER with as much advance
notice of such change(s) as is possible. However, if such changes would
materially affect CUSTOMER's use of the Service, CUSTOMER shall have the right,
at its option and as its exclusive remedy, within thirty (30) days after its
receipt of notice of such change, and upon thirty (30) days' notice to SATMEX,
to terminate this Agreement without liability for any Early Termination Charge.
However, If SATMEX eliminates such material effects within the thirty (30) day
notice period, the Agreement will not terminate as provided in this Paragraph
21.

21.  TRANSPONDER ALLOCATION

Assignment of the specific Ku-1 Band transponder in the NAFTA beam that meet the
Performance Parameters on Satmex 5 to be used for the Service remains the sole
prerogative of SATMEX. During the term of this Agreement SATMEX shall have the
right to change any of the Ku-1 Band transponder assignments in the NAFTA beam
of Satmex 5, but shall do so only if there is a valid operational concern,
interference caused by CUSTOMER, or, in order to protect the health of the
satellite on which Service is being provided and only if the new transponder
meets the Performance Parameters. If required, SATMEX will use reasonable
efforts to give CUSTOMER not less than thirty (30) days prior written notice to
CUSTOMER.

22.  FCC COMPLIANCE

If, at any time a Party can no longer comply fully with all material provisions
of this Agreement because of changes to existing (as of the date of this
Agreement) U.S. Federal Communication Commission rules and International or
national regulations which are inconsistent with this Agreement, the other Party
may either (1) terminate immediately the Agreement without any liability
whatsoever by giving notice in writing within sixty (60) days of such action or
(2) negotiate with the first Party to modify the Agreement to conform with the
new commission rules and regulations.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 20 of 73

If either Party elects to terminate pursuant to this Section 22, SATMEX shall
refund promptly any sums previously paid to SATMEX for Service not rendered and
CUSTOMER shall pay all due payments, with the correspondent accrued interest,
*** and any other such charges.

Each Party represents and warrants that, as of the date of this Agreement, it is
not aware of any rules and regulations of the authorities referenced in this
Paragraph 22 which are inconsistent with this Agreement and which could prevent
such Party from fully complying with all of its material obligations under this
Agreement, except for the Regulatory Approval.

23.  NO POSSSESSORY INTEREST, BANKRUPTCY

     CUSTOMER has, and will have, no possessory or other interest in the
transponder(s) provided pursuant to this Agreement. CUSTOMER acknowledges that:
(1) it has been advised of and fully understands the conditions and the
consideration pursuant to which SATMEX provides and CUSTOMER accepts the Service
and (2) the rates for the Service, as well as the termination charges as
provided for in Paragraph 19 ("EARLY TERMINATION CHARGE") hereof, are fair and
reasonable at the market on the date of commitment to the Service and the date
of the Agreement. SATMEX and CUSTOMER recognize that transponder space for the
provision of the service contemplated under the Agreement is a commodity in
limited supply and that those using full time transponder service, similar to
the Service provided under the Agreement, usually enter into long-term
commitments with service providers. Therefore, CUSTOMER understands that its
acceptance of the Service precludes SATMEX from accepting any other CUSTOMER for
service on the transponder(s) being used to provide Service to CUSTOMER. Because
of this, CUSTOMER concedes that a failure to fulfill CUSTOMER's obligations
under the Agreement would irreparably harm SATMEX.

24.  INDEPENDENT CONTRACTOR

     Nothing herein contained shall create any association, partnership, joint
venture, the relation of principal and agent, or the relation of employer and
employee between the parties hereto, it being understood that SATMEX shall
perform all services hereunder as an independent contractor.

25.  PUBLICITY AND ADVERTISING

     25.1 Unless SATMEX expressly consents in writing in advance for each item
          of advertising or publicity, which consent shall not be unreasonably
          withheld or delayed, CUSTOMER shall not in any way or in any form
          disclose, publicize or advertise in any manner(i) the fact that it is
          obtaining services from SATMEX pursuant to this Agreement, (ii) the
          existence of this Agreement, or (iii) the pricing, terms and
          conditions of this Agreement. The foregoing prohibition shall include
          but not be limited to news releases, letters, correspondence,
          literature, promotional materials or displays of any nature or form.
          Each request for approval hereunder shall be submitted in writing to
          the representative designated in writing by SATMEX; and approval, in
          each instance, shall be effective only if in writing and signed by
          said representative. Notwithstanding the foregoing, CUSTOMER may refer
          to the fact that it is securing services from SATMEX without SATMEX's
          prior approval so long as such statements are limited to a statement
          of such fact and are not an endorsement of any product or service by
          SATMEX.

     25.2 Unless CUSTOMER expressly consents in writing in advance for each item
          of advertising or publicity, which consent shall not be unreasonably
          withheld or delayed, SATMEX shall not in any way or in any form
          disclose, publicize or advertise in any manner (i) the fact that it is
          providing services to CUSTOMER pursuant to this Agreement, (ii) the
          existence of the Agreement, (iii) the pricing, terms, and conditions
          of the Agreement, or (iv) information similar to that described in (i)
          - (iv) above regarding any customer of CUSTOMER who is receiving
          services from a SATMEX transponder. The foregoing prohibition shall
          include but not be limited to news releases, letters, correspondence,
          literature, promotional materials of displays of any nature of form.
          Each request for approval hereunder shall be submitted in writing to
          the representative designated in writing by CUSTOMER; and approval, in
          each instance, shall be effective only if in writing and signed by
          said representative. Nothing herein shall prevent SATMEX from
          providing the COFETEL or any other governmental agency, information
          concerning this Agreement as required by Law or in response to a
          request for information by such Governmental Agency. Notwithstanding
          the foregoing, SATMEX may refer to the fact that it is providing the
          service to CUSTOMER without CUSTOMER's prior approval so long as such
          statements are limited to a statement of such fact and are not an
          endorsement of any product or service by CUSTOMER.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 21 of 73

26.  GOVERNING LAW AND LANGUAGE

This Agreement shall be governed by and construed under the laws of the State of
New York, without giving effect to its principles of conflict of laws, except to
the extent that the application of any such laws would (i) contravene any
obligation of SATMEX to comply with the Satellite Concession, or (ii) contravene
any obligation of CUSTOMER to comply with any of the governmental permits with
which it operates in its countries of operation. The parties hereby submit to
the exclusive jurisdiction of the United States District Court for the Southern
District of New York (or the courts of the State of New York if such United
States federal court does not have jurisdiction) for purposes of the subject
matter of this Agreement, and waive any right to claim that any such court in an
inconvenient or inappropriate forum; provided, however, that nothing in this
sentence shall be construed to prevent SATMEX from providing information or
reporting to COFETEL or any other part of the Mexican government.

The language of this Agreement is English and all communications and notices
between the Parties shall be in the English language.

27.  HEADINGS

     The headings used throughout this Agreement are for convenience only and
are not a part of this Agreement and shall have no effect upon the construction
and interpretation of this Agreement.

28.  WAIVERS

     A waiver by either party of any of the terms and conditions of the
Agreement in any instance shall not be deemed or construed to be a waiver of
such term or condition for the future, or of any subsequent breach thereof.

29.  CONFIDENTIALITY

This Agreement shall be kept strictly confidential for five years in excess of
the Term, except for disclosure (1) to the extent required by the law, legal
process, or the rule of any public securities exchange, in which case the
parties shall seek confidential treatment of this Agreement and the information
contained herein, (2) if said information is deemed to be of public knowledge.

The parties may use the confidential information only by means of prior written
consent from the other party.

30.  SUCCESSION

     The Agreement shall inure to the benefit of and be binding upon the
respective successors and permitted assigns of the parties hereto.

31.  NONDISCLOSURE OF INFORMATION

     31.1 Each Party to the Agreement may find it beneficial to disclose to the
          other Party documentation or other information which the disclosing
          Party considers proprietary ("Information"). Such Information may
          include but is not limited to, engineering, hardware, software or
          other technical information concerning the project or the SATMEX
          network, CUSTOMER's use of the Space Segment Capacity and financial,
          accounting or marketing reports, analysis, forecasts, predictions or
          projections relating to this project or the business of SATMEX or
          CUSTOMER generally.

     31.2 If is specifically understood and agreed that information disclosed
          pursuant to the Agreement shall be considered proprietary either
          because 1) it has been developed internally by the disclosing Party,
          or because 2) it has been received by the disclosing Party subject to
          a continuing obligation to maintain the confidentiality of the
          information.

     31.3 Information that is provided in a tangible form shall be marked in a
          manner to indicate that it is considered proprietary or otherwise
          subject to limited distributions provided herein. If the Information
          is provided orally, the disclosing party shall clearly identify it as
          being proprietary at the time of disclosure, and within five (5)
          working days of such disclosure, confirm the disclosure in writing to
          the other party. With respect to information, the Party to whom the
          information is disclosed and its employees shall:

               a.   hold the Information in confidence and protect it in
                    accordance with the security regulations by which it
                    protects its own proprietary or confidential information,
                    which it does not wish to disclose;

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 22 of 73

               b.   restrict disclosure of the Information solely to those
                    employees with a need to know and not disclose it to any
                    other persons;

               c.   advise those employees of their obligations with respect to
                    the Information; and

               d.   use the Information only in connection with implementing the
                    Agreement and in continuing discussions and negotiations
                    between the parties concerning the Service.

     31.4 The party to whom Information is disclosed shall have no obligations
          to preserve the proprietary nature of any Information that:

          a.   was previously known to it free of any obligations to keep it
               confidential;

          b.   is disclosed to third parties by the disclosing party without
               restriction;

          c.   is or becomes publicly available by other than unauthorized
               disclosure; or

          d.   is independently developed by the receiving party.

     31.5 The receiving party may disclose the Information pursuant only to a
          court order or other governmental or regulatory compulsion provided
          that the disclosing party shall be given prompt notice of the receipt
          of such order or other compulsion.

     31.6 The receiving Party agrees that all of its obligations undertaken
          under this non-disclosure agreement shall survive and continue after
          any termination of this Agreement, for a period of three (3) years.

The Information shall be deemed the property of the disclosing party and, upon
request the other party will return all Information that is in tangible form to
the disclosing party or destroy all such information.

33.  ARBITRATION

     If any dispute arises from or relates to this Agreement or its
infringement, the Parties agree to submit it to a final and binding arbitration
under the Rules of Conciliation and Arbitration of the American Arbitration
Association ("AAA").

     The arbitration hearing must take place according to the procedural rules
of the "AAA" in force at the time of signing this Agreement. The arbitrator must
not limit, extend or in any other way alter the terms and conditions of this
Agreement. In no event will any Party be liable for any consequential exemplary
or punitive damages or any award of legal fees in connection with its
performance or non-performance under this Agreement.

     The arbitration hearing, including arguments and allegations, shall take
place in English in New York, State of New York. The award shall be made in US
Dollars. The arbitration award may be entered and enforced in any Court that
possesses jurisdiction. Each of the parties shall pay their own costs (including
legal fees) and should equally share the costs of such hearing. The parties,
their representatives, other participants and the arbitrator(s) must maintain
the existence, content and result of the arbitration confidential.

     Nothing stipulated in this clause should be interpreted in such way that it
impedes either of the parties from appearing before any court of law with the
aim of protecting its rights derived from the arbitration proceeding pending
resolution. The petition of either of the parties to a court of law for the
protection of its rights, shall not be considered as resignation of the
obligation to submit the dispute to arbitration.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 23 of 73

                                    EXHIBIT A

                                    SECTION 1
                             SERVICE SPECIFICATIONS

                             SPACE SEGMENT CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Vertical/horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 24 of 73

                             SPACE SEGMENT CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Vertical/horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 25 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Horizontal/vertical

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 26 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Horizontal/vertical

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 27 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 vertical/Horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 28 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Vertical/horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)

                              EXHIBIT A (AMENDED 1)
                             SERVICES SPECIFICATIONS

                             SPACE SEGMENT CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Horizontal/vertical

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                                        3

<PAGE>

(SATMEX LOGO)

1/3

                                    SECTION 2
                                  CONTOUR MAPS

                                  COVERAGE MAPS

                                  Contour Map

                                     (MAP)

                                      ***

                                        4

*** Confidential treatment requested by Satmex.
<PAGE>

(SATMEX LOGO)

2/3

                                  Contour Map

                                     (MAP)

                                      ***

                                        5

*** Confidential treatment requested by Satmex.

<PAGE>

(SATMEX LOGO)

3/3

                                  Contour Map

                                      ***

                                     (MAP)

                                        6

*** Confidential treatment requested by Satmex.

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 30 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Vertical/horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 31 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Vertical/horizontal

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 32 of 73

                               ADDITIONAL CAPACITY

<TABLE>
<S>                          <C>
Satellite                    SATMEX 5

Orbital Location             116.8 degrees W

Region Covered               Ku 1 Beam

Bandwidth                    36 MHz (nominal)

Transponder Power            132 Watt (nominal)

Service Category             Non Preemptible

Assigned Frequency           Transponder *** on SATMEX 5,
                             Center Frequency *** MHz

Connectivity                 ***

EIRP                         ***

G/T                          ***

SFD                          ***

Polarization                 Horizontal/vertical

Nominal Attenuator Setting   ***

Maximum Interference Level
   Adjacent Satellite        ***
   Adjacent Channel
</TABLE>

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 33 of 73

                                    EXHIBIT A

                                    SECTION 2

                                  CONTOUR MAPS

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 34 of 73

                                       ***

                                      (MAP)

                               Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 35 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 36 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 37 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 38 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 39 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 40 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 41 of 73

                                       ***

                                      (MAP)

                           *** Confidential treatment
                               requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 42 of 73

                                       ***
                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 43 of 73

                                       ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 44 of 73

                                       ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 45 of 73

                                      ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 46 of 73

                                      ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 47 of 73

                                      ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 48 of 73

                                      ***

                                      (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 49 of 73

                                      ***

                                     (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 50 of 73

                                      ***

                                     (MAP)

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 51 of 73

                                       ***

                                      (MAP)

                *** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 52 of 73

                                       ***

                                      (MAP)

                *** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 53 of 73

                                    EXHIBIT B

                         KU-BAND TRANSMISSION PARAMETERS

SATMEX 5

TRANSPONDER TRANSMISSION PARAMETERS - To assure that signals transmitted via a
SATMEX Ku1-Band Transponder will not damage or impair other signals transmitted
over SATMEX and/or adjacent satellites or other SATMEX-provided transponders,
the following transmission parameters apply:

A. TRANSMITTED CARRIERS - The transmitted carrier(s) for 36 MHz transponders
shall be within accepted industry standards and shall be confined to the usable
bandwidth of 36 MHz centered on the transponder center frequency, unless
otherwise assigned.

B. TRANSMIT POWER - SATMEX shall authorize a particular transmit power by the
transmitting earth station. For transponders operating in the saturated mode,
the authorized transmit power shall be no more than the transmit power necessary
to saturate the transponder. For transponders operating in a mode where the
power is backed off below saturation, this authorized transmit power shall not
be exceeded. During rain fades an earth station with Automatic Level Control may
exceed the transmit power authorized by the company by the amount necessary to
overcome the additional uplink loss caused by the rain.

C. POLARIZATION ISOLATION (TRANSMITTING EARTH STATION) - Isolation between
orthogonal cross-polarized signals shall be higher than *** and shall cause no
harmful interference into the cross-polarized frequencies. The polarization
adjustment of the earth station antenna relative to the satellite shall be
maintained to an accuracy of *** when polarization tracking is not employed.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)

                             Exhibit C, (Amended 1)
                              Initial Loading Plan

<TABLE>
<CAPTION>
       TRANSPONDER   TRANSPONDER
DATE      NUMBER      ALLOCATED                   RESTRICTION
----   -----------   -----------   -----------------------------------------
<S>    <C>           <C>           <C>
 ***       ***           ***       2 TRANSPONDERS ANY POLARIZATION,
                                   SEPARATED BY AT LEAST 1 TRANSPONDER
 ***       ***           ***       2 TRANSPONDERS ON THE OTHER POLARIZATION,
                                   SEPARATED BY AT LEAST 1 TRANSPONDER
 ***       ***           ***       NONE
 ***       ***           ***       NONE
 ***       ***           ***       NONE
</TABLE>

***  Confidential treatment requested by Satmex.

                                        7

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 55 of 73

                                    EXHIBIT C

                                    SECTION 2

               PARAMETER SPECIFICATIONS FOR MASTER GROUND STATIONS
                            AND REMOTE EARTH STATIONS

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 56 of 73

                                       ***

SATMEX shall not be responsible or liable if CUSTOMER does not obtain the
permits, licenses or other authorizations for the utilization of CUSTOMER's
antennas in the respective countries in which CUSTOMER intends to conduct
business.

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 57 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                       ***

                *** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 58 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                      ***

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 59 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                      ***

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 60 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                      ***
*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 61 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                      ***

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 62 of 73

(CHANNEL MASTER(R) LOGO)

Antenna Laboratory                                               Antenna Pattern

                                     (GRAPH)

                                      ***

*** Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 63 of 73

                                    EXHIBIT C

                                    SECTION 3

                   TECHNICAL INFORMATION FOR PERMANENT SERVICE
                         OF DIGITAL SIGNAL TRANSMISSION

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 64 of 73

CARRIER INFORMATION:

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 65 of 73

                                    EXHIBIT C

                                    SECTION 4

           PARAMETER SPECIFICATIONS FOR REMOTE TRANSMIT EARTH STATIONS

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 66 of 73

                                    EXHIBIT C

                                    SECTION 5

                   TECHNICAL INFORMATION FOR PERMANENT SERVICE
         OF DIGITAL SIGNAL TRANSMISSION THROUGH TWO WAY REMOTE TERMINALS

                                       ***

CARRIER INFORMATION:

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 67 of 73

                                       ***

***  Confidential treatment requested by Satmex.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 68 of 73

                                    EXHIBIT D

                  ACCESS AND INTERFERENCE MANAGEMENT PROCEDURES
                         SATMEX MEXICAN SATELLITE SYSTEM
                                   AUGUST 1999

ACCESS PROCEDURE:

INTRODUCTION

In order to minimize harmful interference and ensure quality transmission on
SATMEX satellites, the Communication Control Center (Satmex CCC) at Iztapalapa
(PCC) and Hermosillo (ACC) will function as control stations for the SATMEX
CUSTOMER networks.

SATMEX Satellite Operations monitors SATMEX transponders to identify any
performance that deviates from the parameters prescribed by SATMEX Satellite
Engineering.

All customer-owned and operated earth stations are required to contact SATMEX
CCC prior to the start of any transmission to a SATMEX transponder. SATMEX CCC
is required to order a customer to cease transmission if such customer's signal
is interfering with or otherwise degrading other service on the spacecraft.

This document defines the procedures for introduction of new carriers into
SATMEX transponders and the steps to follow when reporting system problems to
CCC personnel and outlines the operating criteria for transmitting through
SATMEX transponders.

A list of CCC contacts and telephone numbers for use by SATMEX customers is
included.

USER PROCEDURES

ESTABLISHING NEW CARRIERS

All customers establishing new carriers for transmissions through SATMEX
Satellites, whether temporary or permanent, are required to comply with the
following procedure:

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 69 of 73

a)   Provide all the required information to SATMEX Satellite Engineering for
     the definition of the transmission parameters, estimated system performance
     and allocated interference margin for the system to be transmitted through
     SATMEX transponders. These parameters should be provided in writing before
     the system is placed in operation for information and review. It should be
     noted that all transmission should have proper authorization from
     Government authorities and SATMEX.

b)   CALL SATMEX'S CCC (52 5) 201-0898 (OR 01 800 800 SATM IF IN MEXICO OR
     1-877-SATMEX1 TOLL FREE NUMBER FROM THE U.S.) for scheduling an antenna
     line up with the satellite. For each new or modified antenna over 3 meters
     in diameter, an on-site antenna pattern test should be performed.

     Explain the nature of the carrier to be established: e.g., Video, Single
     Channel Per Carrier, Modulation, Time Division Multiple Access, etc. and
     have the following information available.

     1.   Downlink frequency

     2.   Spacecraft

     3.   Transponder and polarization

     4.   Downlink E.I.R.P.

     5.   Antenna data sheet (if applicable)

     6.   Phone number of uplink station and name of contact

               NOTE: INCLUDE 24-HOUR CONTACT IF CARRIER IS PERMANENT

c)   Prior to contacting SATMEX CCC at the appointed time, the uplink station
     should perform the following without transmitting any signal to SATMEX
     transponders.

     1.   Peak antenna on appropriate SATMEX spacecraft.

          NOTE: Antenna pointing is the responsibility of the uplink station.
          Antenna must be properly pointed prior to calling SATMEX CCC. An
          improperly pointed antenna, one peaked on a sidelobe for instance,
          cannot achieve correct Polarization alignment.

     2.   Adjust polarization as closely as possible by observing received
          signals.

d)   CONTACT SATMEX CCC (52 5) 201-0898 (OR 1 800 800 SATM, IF IN MEXICO OR
     1-877-SATMEX1 FROM THE U.S.).

e)   At the direction of SATMEX CCC, the carrier, frequency and power will be
     established and the following parameters will be measured

     1.   Downlink power

     2.   Polarization isolation

     3.   Frequency

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 70 of 73

     4.   Bandwidth

     5.   Spurious emissions

     6.   Modulation

     7.   Data rate & FEC (if applicable)

     The carrier must conform to prescribed parameters. If specifications cannot
     be met, SATMEX CCC will direct the Transmit Station to cease radiating.

f)   In the event of the Initial Loading Plan changes as stated on Exhibit C
     Section 1, SATMEX will collaborate in reasonably commercial efforts with
     CUSTOMER to accommodate all the operational concerns that may affect the
     appropriate development of customer business.

INTERFERENCE REPORTING

All interference incidents will be reported directly to SATMEX CCC. Timely
reporting of interference problems increases the chance of identification. The
following procedure is to be used by the customer:

a)   Obtain the transmission parameters, estimated system performance and
     allocated interference margin for the system experiencing the interference.
     This information will be required for analyzing and resolving the
     interference problems.

b)   Prior to initiating an interference report, customers shall check all
     uplink facilities under their control or their customer's control to insure
     that the problem is not self-induced.

c)   Check interference level against carrier level. Refer to system design
     criteria. Insure that the affected carrier has sufficient carrier-to
     interference margin.

d)   If possible, check with a second earth station to confirm the interference.
     If the customer does not have a second earth station, SATMEX CCC will
     confirm such interference.

e)   Have the following information available:

          1.   Satellite, transponder, polarization

          2.   Date and time discovered or started

          3.   Frequency

          4.   Traffic affected - type and customer

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 71 of 73

     It is important to provide as much information as possible, as SATMEX shall
     report all incidents to COFETEL (as defined in Paragraph 13 of the General
     Terms and Conditions). SATMEX CCC personnel will also log the incident and
     begin troubleshooting procedure to identify and eliminate, If possible, the
     source of the interfering signal.

f)   Report the incident to SATMEX CCC (52 5)201-0898 (or 1 800 800 SATM if in
     Mexico or 1-877-SATMEX1 FROM THE U.S.).

g)   At the direction of SATMEX CCC some tests may be performed.

SYSTEM OPERATION CRITERIA

-    CROSS-POLARIZATION ISOLATION

     The earth station cross polarization isolation for uplink and downlink
     should be > or = 30 dB on axis.

-    ANTENNA RADIATION PATTERN

     The antennas should comply with the CCIR-580 recommendation.

SATMEX ESCALATION LIST:

                             Alejandro Romero Zuniga
                            Gerente de Comunicaciones
                                  (525) 2010345

                             Julian palomera Murillo
                    Subdirector de Comunicaciones y Monitoreo
                                 (525) 20108 82

                               Roberto Betancourt
                        Director de Ingenleria Satelital
                                  (525) 2010866

                             Juan Manuel Zamudio Zea
                    Vicepresidencia de Ingenieria y Operacion
                                  (525) 2010824

CUSTOMER ESCALATION LIST:

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 72 of 73

CUSTOMER's 24/7 DIRECPC operations center number is: 301-601-7205.

CUSTOMER's technically responsible person(s) in charge of its company's
satellite network are as follows

Steve Smith NOC Manager           office 301-601-2605
                                  pager  800-759-8888 pin 1255710

Jeff Steinhorn RF Engineer        office 301-428-5553
                                  pager  800-759-8888 pin 91209

Dave Zatloukal DirecPC Services   office 301-212-7818
                                  pager  800-759-8888 pin 2125136

Should any of this contact data change, CUSTOMER shall immediately notify SATMEX
in writing of the changes.

                               SATMEX PROPRIETARY

<PAGE>

(SATMEX LOGO)                                                 Contract No. 319-I
                                                                   Page 73 of 73

TRANSMITTER LOCATION SYSTEM SERVICE (TLS).

     The process of locating interfering signals usually starts with a call from
     a customer advising the satellite operator that their traffic is being
     disrupted. At this point, the satellite operator usually performs a quick
     check of the Customer's transponder to see if anything else is amiss, as
     discussed above. If the CCC monitor personnel cannot find the interference
     source quickly, then it is time to begin a TLS search for an interfering
     signal. Interferometry Department (I.D.). will take action on this matter.

     The TLS technique employs signals propagated through the affected satellite
     and an adjacent satellite to determine crossing lines of position on the
     Earth, thus locating the interferor.

     There are several parameters to be considered and met to perform positive
     location using the TLS technique.

          Satellite ephemeredes data (intf. & adj.).
          External forces.
     Calibrators will be near interferor.
          Sidelobe level must be high enough.
          Interference must be at Ku Band.
          No presence of signal in adjacent satellite.
          Database up dated.
          Modulation of signal
          Signal bandwidth.

Interferometry Department (I.D.). will then investigate the IRF situation and
respond to the earth station operator to keep him advised of the situation with
a formal message whenever significant progress has been made.

I.D.: Telephone: (52) 5 201 03 47
Fax:             (52) 5 201 08 23
e-mail           mcuevas@satmex.com.mx

                               SATMEX PROPRIETARY

<PAGE>

                                                                    Digitalizado
(SATMEX LOGO)                                                          06 MAR 06

                               TENTH AMENDMENT TO
                                 AGREEMENT 319-I

ON THIS 1st DAY OF DECEMBER, 2005 (THE "EXECUTION DATE"), THIS TENTH AMENDMENT
TO AGREEMENT NUMBER 319-I, IS ENTERED INTO BY AND BETWEEN HUGHES NETWORK
SYSTEMS, LLC, A LIMITED LIABAILITY COMPANY ORGANIZED AND EXISTING UNDER THE LAWS
OF THE STATE OF DELAWARE; SUCCESSOR IN INTEREST TO HUGHES NETWORK SYSTEMS, A
DIVISION OF HUGHES ELECTRONICS CORPORATION. WHICH SHALL HEREINAFTER BE NAMED
"THE CLIENT", REPRESENTED IN THIS ACT BY MR. PHILIP K. O'BRIEN, IN HIS CAPACITY
AS ASSISTANT VICE-PRESIDENT, AND AS THE OTHER PARTY BY SATELITES MEXICANOS, S.A.
DE C.V., WHICH SHALL HEREINAFTER BE NAMED "SATMEX", A CORPORATION ORGANIZED AND
EXISTING UNDER THE LAWS OF MEXICO, REPRESENTED BY MR. SERGIO MIGUEL ANGEL AUTREY
MAZA, IN HIS STATUS AS CHIEF EXECUTIVE OFFICER (C.E.O.), PURSUANT TO THE
FOLLOWING.

                                   ANTECEDENTS

1.-    On January 20, 2000, SATMEX and HUGHES ELECTRONICS CORPORATION, through
       THE CLIENT, executed the agreement number 319-I, hereinafter the
       "Agreement".

2.-    On May 16, 2000, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
       CLIENT amended the Agreement, hereinafter the "First Amendment", in order
       to substitute the transponder *** for *** and ***.

3.-    On January 1, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through
       THE CLIENT entered into a second amendment to the Agreement, hereinafter
       the "Second Amendment", in which HUGHES'S obligation to take the ***
       transponder changed from ***.

4.-    On March 1, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
       CLIENT entered into a third amendment to the Agreement, hereinafter the
       "Third Amendment", in which HUGHES'S obligation to take the ***.

5.-    On May 20, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
       CLIENT entered into a fourth amendment to the Agreement, hereinafter the
       "Fourth Amendment", in which the parties agreed to substitute transponder
       ***.

6.-    On January 1, 2002, SATMEX and HUGHES ELECTRONICS CORPORATION, through
       THE CLIENT entered into a fifth amendment to the Agreement, in which the
       parties *** transponder hereinafter the "Fifth Amendment".

7.-    On February 3, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION entered
       into a sixth amendment to the Agreement in which the parties agreed to
       ***, hereinafter the "Sixth Amendment".

8.-    On March 24, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
       CLIENT entered into a seventh amendment to the Agreement in which, among
       others, THE CLIENT ***, hereinafter the "Seventh Amendment".

9.-    On May 1, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
       CLIENT entered into an eighth amendment to the Agreement in which, among
       others, THE CLIENT exercised the *** under the Second clause of the
       Seventh Amendment, hereinafter the "Eighth Amendment".

10.-   On September 7, 2004, SATMEX and HUGHES ELECTRONICS CORPORATION through
       THE CLIENT executed into an ninth amendment to the Agreement in which,
       among others, THE CLIENT *** in Satmex 5 satellite, transponder ***, in
       band *** hereinafter the "Ninth Amendment".

                                  CONFIDENTIAL
                                        1

*** Confidential treatment requested by Satmex.
<PAGE>

(SATMEX LOGO)

After effected the foregoing antecedents, the parties agree to enter into this
Tenth Amendment and its Annex and bind themselves pursuant to the following:

                                     CLAUSES

FIRST.-  THE CLIENT *** in Solidandad 2 satellite, *** band *** from *** in
         accordance with Annex I-B. This capacity will be applied to CLIENT'S
         *** THE CLIENT *** and THE CLIENT will use such capacity ***

         The prices to capacity shall be of USD$ *** in Solidaridad 2 satellite.

         Once the Satmex 6 satellite is fully operational, SATMEX will provide a
         written notification to THE CLIENT and THE CLIENT may migrate the
         capacity herein from Solidaridad 2 to Satmex 6 satellite within a
         fifteen (15) day period after such notification and upon such migration
         SATMEX will maintain a price of USD$ *** during the Term of this
         Amendment.

SECOND.- CLIENT shall pay SATMEX, for the *** an amount of USD$: *** by bank
         wire transfer to *** in favor of SATELITES MEXICANOS, S.A DE C.V. and
         in the same currency as that shown on the corresponding invoice.

         THE CLIENT will start ***

THIRD.-  THE CLIENT ***

FOURTH.- The term of this Tenth Amendment shall commence from the Execution Date
         and shall terminate on ***

FIFTH.-  For the application and interpretation of the present agreement, the
         Parties decide to apply the Arbitration established in article 33 of
         the Contract

SIXTH.-  The parties agree, that except as specifically amended hereby the
         Agreement and all its amendments shall remain in full force and effect
         in accordance with its terms.

This Tenth Amendment along with its Annex I-B is signed in counterparts, one
copy remaining in possession of each party, in Mexico City, as of the Execution
Date first written above.

FOR THE CLIENT                          FOR SATMEX

                                        /s/ SERGIO MIGUEL ANGEL AUTREY MAZA
-------------------------------------   ----------------------------------------
PHILIP K. O'BRIEN                       SERGIO MIGUEL ANGEL AUTREY MAZA
ASSISTANT VICE PRESIDENT                CHIEF EXECUTIVE OFFICER

***  Confidential treatment requested by Satmex.

                                  CONFIDENTIAL
                                        2

<PAGE>

(SATMEX LOGO)

                                    ANNEX I-B

Client: HUGHES NETWORK SYSTEMS
CONTRACT NO.: 319-I

                          SERVICE OPERATION INFORMATION

<TABLE>
<S>                <C>
Satellite          Solidaridad 2
Band:              ***
Region             ***
Transponder        ***
Service Category   ***
Connectivity       ***
Polarization       ***
</TABLE>

                               CARRIER INFORMATION

***

<TABLE>
<CAPTION>
<S>                <C>
***
</TABLE>

                                                            TOTAL BANDWIDTH: ***

This Annex is signed in two copies, one copy remaining in possession of each
party, in Mexico City, on December 1st, 2005.

FOR THE CLIENT                          FOR SATMEX

                                        /s/ SERGIO MIGUEL ANGEL AUTREY MAZA
-------------------------------------   ----------------------------------------
PHILIP K. O'BRIEN                       SERGIO MIGUEL ANGEL AUTREY MAZA
ASSISTANT VICE PRESIDENT                CHIEF EXECUTIVE OFFICER

***  Confidential treatment requested by Satmex.

                                  CONFIDENTIAL
                                        3

<PAGE>

                                                                    Digitalizado
(SATMEX LOGO)                                                         03 MAY, 06

                              TWELFTH AMENDMENT TO
                                 AGREEMENT 319-I

ON THIS 1st DAY OF FEBRUARY, 2006 (THE "EXECUTION DATE"), THIS ELEVENTH
AMENDMENT TO AGREEMENT NUMBER 319-I, IS ENTERED INTO BY AND BETWEEN HUGHES
NETWORK SYSTEMS, LLC, A LIMITED LIABILITY COMPANY ORGANIZED AND EXISTING UNDER
THE LAWS OF THE STATE OF DELAWARE; SUCCESSOR IN INTEREST TO HUGHES NETWORK
SYSTEMS, A DIVISION OF HUGHES ELECTRONICS CORPORATION. WHICH SHALL HEREINAFTER
BE NAMED "THE CLIENT", REPRESENTED IN THIS ACT BY MR. PHILIP K. O'BRIEN, IN HIS
CAPACITY AS VICE-PRESIDENT, AND AS THE OTHER PARTY BY SATELITES MEXICANOS, S.A.
DE C.V., WHICH SHALL HEREINAFTER BE NAMED "SATMEX", A CORPORATION ORGANIZED AND
EXISTING UNDER THE LAWS OF MEXICO, REPRESENTED BY MR. SERGIO MIGUEL ANGEL AUTREY
MAZA, IN HIS STATUS AS CHIEF EXECUTIVE OFFICER (C.E.O.), PURSUANT TO THE
FOLLOWING.:

                                   ANTECEDENTS

1. - On January 20, 2000, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT, executed the agreement number 319-I, hereinafter the "Agreement".

2. - On May 16, 2000, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT amended the Agreement, hereinafter the "First Amendment", in order
     to substitute transponder *** for *** and ***.

3. - On January 1, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT entered into a second amendment to the Agreement, hereinafter the
     "Second Amendment", in which HUGHES'S obligation to take the ***
     transponder changed from ***.

4. - On March 1, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT entered into a third amendment to the Agreement, hereinafter the
     "Third Amendment", in which HUGHES'S obligation to take ***.

5. - On May 20, 2001, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT entered into a fourth amendment to the Agreement, hereinafter the
     "Fourth Amendment", in which the Parties agreed to substitute transponder
     ***.

6. - On January 1, 2002, SATMEX and HUGHES ELECTRONICS CORPORATION, through THE
     CLIENT entered into a fifth amendment to the Agreement, in which the
     Parties *** transponder hereinafter the "Fifth Amendment".

7. - On February 3, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION entered into
     a sixth amendment to the Agreement in which the Parties agreed to ***,
     hereinafter the "Sixth Amendment".

8. - On March 24, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
     CLIENT entered into a seventh amendment to the Agreement in which, among
     others, THE CLIENT ***, hereinafter the "Seventh Amendment".

9. - On May 1, 2003, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
     CLIENT entered into an eighth amendment to the Agreement in which, among
     others, THE CLIENT exercised the *** under the Second clause of the
     Seventh Amendment, hereinafter the "Eighth Amendment".

10.- On September 7, 2004, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
     CLIENT executed into a ninth amendment to the Agreement in which, among
     others, THE CLIENT *** in Satmex 5 satellite transponder ***, in band ***
     hereinafter the "Ninth Amendment".

                                  CONFIDENTIAL
                                        1

*** Confidential treatment requested by Satmex.
<PAGE>

(SATMEX LOGO)

11. - On December 1, 2005, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
      CLIENT executed into an tenth amendment to the Agreement in which, among
      others, THE CLIENT *** will be applied to CLIENT'S Bottom of Social
      Cover Program ("FONCOS") hereinafter the "Tenth Amendment".

12. - On January 20, 2006, SATMEX and HUGHES ELECTRONICS CORPORATION through THE
      CLIENT executed into an eleventh amendment to the Agreement in which,
      among others, THE CLIENT *** on Satmex 5 satellite for ***, hereinafter
      the "Eleventh Amendment".

13. - SATMEX and LORAL SKYNET ("LORAL SKYNET") A DIVISION OF LORAL SPACECOM CORP
      entered into an Agreement for *** on Satmex 5, hereinafter the ***.

14. - On September 7, 2005, SATMEX entered into a company's reorganization under
      Mexican reorganization law called "Concurso Mercantil" according to
      sentence dictated by Judge Second of District in Civil Matter, in the
      Federal District.

After effected the foregoing antecedents, the Parties agree to enter into this
Twelfth Amendment and bind themselves pursuant to the following:

                                     CLAUSES

FIRST.- As of the Execution Date, THE CLIENT and SATMEX agree to extend the term
     of the capacity contracted under clause First of the "Eleventh Amendment"
     in accordance with the following table:

<TABLE>
<CAPTION>
                                   BANDWIDTH
SATELLITE   BAND  TXDRS   REGION      MHZ      PERIOD
---------   ----  -----   ------   ---------   ------
<S>         <C>   <C>     <C>      <C>         <C>
Satmex 5     ***   ***      ***       ***        ***
</TABLE>

SECOND.- SATMEX SERVICES

THE CLIENT agree to *** TRANSPONDER. *** THE CLIENT agrees to fulfill this ***.
THE CLIENT agrees to pay SATMEX for the provisioning of such service, the price
established in the clause Third herein (Rate and Term of Service) and to perform
its other obligations hereunder.

The service provided under the Contract shall be provided during the *** as an
international service of signal conduction via satellite, through the Mexican
Satellite System, meeting the "Performance Parameters" (as set forth in Exhibit
A), as *** in the *** Band, and in the "NAFTA" region beam. The Space Segment
Capacity initially shall consist of *** transponder on the Satmex 5 Satellite of
*** each (the BASIC CAPACITY).

***  Confidential treatment requested by Satmex.

                                  CONFIDENTIAL
                                        2

<PAGE>

(SATMEX LOGO)

                                       ***

THIRD.- RATE AND TERM OF SERVICE

Both parties agree that the following table defines the RATE CARD that applies
for Satmex 5 and Satmex 6 satellites:

<TABLE>
<CAPTION>
         QUANTITY
(TOTAL # OF MHZ EQUIVALENT     MONTHLY RATE     MONTHLY RATE
    TRANSPONDERS USED)       PER TRANSPONDER       PER MHZ
  IN SATMEX 5 & SATMEX 6      (U.S. DOLLARS)   (U.S. DOLLARS)
--------------------------   ---------------   --------------
<S>                          <C>               <C>
            ***                    ***               ***
</TABLE>

***

THE CLIENT agrees that it should pay SATMEX for the Satmex 5 services the
minimum total amount of USD ***. This amount could be higher according to the
RATE CARD

FORTH.- ***

                                       ***

                                       ***

          The term "CPI" shall mean the percentage increase (if any) in the
Customer Price index-U.S. City Average (all items), as published by the
Department of Labor, Bureau of Labor Statistics.

FIFTH - ***

                                       ***

***  Confidential treatment requested by Satmex.

                                  CONFIDENTIAL
                                        3

<PAGE>

(SATMEX LOGO)

                                       ***

SIXTH.- PAYMENT OF THE SERVICE:

THE CLIENT shall pay SATMEX *** for the Space Segment Capacity Service
calculated by applying the RATE CARD established in the Third Clause of this
amendment

As of the "Execution Date" the billing of transponder will be made
directly by *** to THE CLIENT and its payment shall be made directly by THE
CLIENT to *** to the following bank account.

Bank name: ***
Bank Account #: ***
***
SWIFT CODE: ***

Payment by THE CLIENT to *** with respect to transponder *** shall be according
to the same terms as for the other capacity leased by THE CLIENT from SATMEX
hereunder. THE CLIENT and SATMEX acknowledge and agree that if THE CLIENT is
delinquent in making payment to *** may take any such action in its own right,
including but not limited to legal action, as it deems appropriate to collect
payment, and SATMEX shall take such action as *** shall request to terminate,
suspend, or disrupt THE CLIENT'S use of 15K transponder, consistent with the
rights and remedies of SATMEX with respect to other capacity leased by THE
CLIENT under the Agreement

SEVENTH.- TERM

The term of this Twelfth Amendment shall commence from the Execution Date and
shall terminate ***

EIGHTH.- ***

                                       ***

NINTH.- NOTICES

***  Confidential treatment requested by Satmex.

                                  CONFIDENTIAL
                                        4

<PAGE>

(SATMEX LOGO)

All notices to be provided under this Amendment shall be in writing and shall be
delivered either (i) personally with the corresponding acknowledgment of
receipt; (ii) by registered mail with acknowledgment of receipt; (iii) by an
electronic fax transmission with confirmation via email; or (iii) by any
electronic mean with acknowledgement of receipt, to the following addresses, fax
numbers or e-mail addresses:

       TWELFTH AMENDMENT TO AGREEMENT 319-I DATED 1ST OF FEBRUARY OF 2006

                                  CONFIDENTIAL
                                        5

<PAGE>

(SATMEX LOGO)

     If to THE CLIENT:

     HUGHES NETWORK SYSTEMS, INC.
     11717 Exploration Lane,
     Germantown MD 20876, USA
     Phone: +(301) 428 7064
     Fax: +(301) 548 1925
     E-Mail: kalinyak@hns.com
     Attn: Kenneth Kalinyak
           Senior Manager Satellite

     Billing Contact:

     HUGHES NETWORK SYSTEMS, INC.
     11717 Exploration Lane,
     Germantown MD 20876, USA
     Phone: +(301) 212 7818
     Fax: +(301) 428 1868
     E-Mail: satloukal@hns.com
     Attn: David Satloukal
           Vice-President Operations

     If to SATMEX:

     SATELITES MEXICANOS, S.A. DE C.V.
     Rodolfo Gaona No. 86, Piso 4.
     Colonia Lomas de Sotelo
     C.P. 11200, Mexico, Distrito Federal
     Phone: +(52 55) 26 29 58 04
     Fax: +(52 55) 26 29 58 92
     E-Mail: eric.perezgrovas@satmex.com
     Attn: Eric Perez Grovas Arechiga
           Sales Director

     Billing Contact:

     SATELITES MEXICANOS, S.A. DE C.V.
     Rodolfo Gaona No. 86, Piso 4
     Colonia Lomas de Sotelo,
     C.P. 11200, Miguel Hidalgo, Distrito Federal.
     Phone: +(52) 55 2629-5800 Ext. 717
            +(52) 55 2629-5843
     Fax: +(52) 55 2629-5890
     E-Mail: breal@satmex.com
             imata@satmex.com
     Attn: Blanca Real Herrera, o
           Ileana Mata Zuniga
           Billing and Collection Manager

                                  CONFIDENTIAL
                                        6

<PAGE>

(SATMEX LOGO)

THE CLIENT shall notify SATMEX in writing of any modification to the information
provided above, within the following five (5) days of any modification.

TENTH.- The Parties agree that no modification is possible in this Twelfth
     Amendment.

ELEVENTH.- For the application and interpretation of this agreement, the Parties
     decide to apply the Arbitration established in article 33 of the Contract

TWELFTH.- The Parties agree that except as specifically amended hereby the
     Agreement and all its amendments shall remain in full force and effect in
     accordance with its terms.

This Twelfth Amendment along is signed in counterparts, one copy remaining in
possession of each party, in Mexico City, as of the Execution Date first written
above.

FOR THE CLIENT                          FOR SATMEX

/s/ PHILIP K. O'BRIEN                   /s/ SERGIO MIGUEL ANGEL AUTREY MAZA
-------------------------------------   ----------------------------------------
PHILIP K. O'BRIEN                       SERGIO MIGUEL ANGEL AUTREY MAZA
VICE PRESIDENT                          CHIEF EXECUTIVE OFFICER

       TWELFTH AMENDMENT TO AGREEMENT 319-I DATED 1ST OF FEBRUARY OF 2006

                                  CONFIDENTIAL
                                        7<PAGE>

                                                                    EXHIBIT 4.12

                                SUPPORT AGREEMENT

     This Support Agreement (together with the exhibits and signature pages
hereto, the "Agreement"), dated as of May 9, 2006, is entered into by and among
Satelites Mexicanos, S.A. de C.V. (the "Company") and the undersigned beneficial
owner (or investment manager or advisor with power to vote or dispose of all or
substantially all of the relevant securities on behalf of the beneficial owner)
(the "Additional Supporting Holder") of the Company's Senior Secured Floating
Rate Notes due June 30, 2004 (the "FRNs") and/or the Company's 10-1/8% Senior
Notes due November 1, 2004 (the "HYBs") identified on the signature page hereto
(the "Existing Notes").

                                    RECITALS

     WHEREAS, on June 29, 2005, the Company initiated a proceeding under the Ley
de Concursos Mercantiles (as amended from time to time, the "MBRA"), which
proceeding is currently pending before the Second Federal District Court for
Civil Matters in Mexico City, Mexico under file number 129/2005 (the "Concurso
Proceeding");

     WHEREAS, subject to certain conditions, the Company; certain beneficial
holders of FRNs (the "Supporting FRN Holders"); certain beneficial holders of
HYBs (the "Supporting HYB Holders", and, together with the Supporting FRN
Holders, the "Supporting Holders"); and certain equity holders of the Company
are parties to that certain Restructuring Agreement (defined below) pursuant to
which they have agreed to support the restructuring of the debt and equity of
the Company on substantially the terms and conditions described in the Concurso
Agreement attached hereto as Exhibit A (the "Concurso Plan") through the (i)
approval of the Concurso Plan and termination of the Concurso Proceeding
pursuant to the MBRA and (ii) the consummation of the Chapter 11 Plan (defined
below) (the "Restructuring");

     WHEREAS, the agreement of the Company and the Supporting HYB Holders to
execute and deliver the Concurso Plan in accordance with the Restructuring
Agreement is contingent upon, inter alia, the Additional Supporting Holder
agreeing, pursuant to the terms hereof, to support the Restructuring;

     WHEREAS, as specified further herein, to consummate the implementation of
the Restructuring, the Additional Supporting Holder is prepared to commit, on
the terms and subject to the conditions of this Agreement and applicable
bankruptcy law, to, if and when solicited to do so, vote (or, in the case of
managed accounts, instruct its custodial agents to vote) to accept the Chapter
11 Plan, to support confirmation of the Chapter 11 Plan, and to perform its
other obligations hereunder, if any.

     NOW, THEREFORE, in consideration of the promises and the mutual covenants
and agreements set forth in this Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
each of the parties signatory to this Agreement, intending to be bound hereby,
agrees as follows:

     1. Definitions. Capitalized terms not otherwise defined above or in this
Section 1 shall have the meaning ascribed to them in the Concurso Plan. As used
in this Agreement, the following terms shall have the following meanings:

<PAGE>

          (a) "Bankruptcy Code" means title 11 of the United States Code, 11
U.S.C. Sections 101-1532 (as may be amended).

          (b) "Chapter 11 Plan" means a plan of reorganization with respect to
the Company under the Bankruptcy Code, which plan shall (i) be filed in the
United States Bankruptcy Court for the Southern District of New York in
accordance with applicable provisions of the Bankruptcy Code and (ii) provide
for the implementation of the Restructuring substantially on the terms and
conditions described in the Concurso Plan.

          (c) "Effective Date" means the first business day on which (a) all
conditions precedent to the effectiveness of the Chapter 11 Plan have been
satisfied or waived pursuant to the terms of the Chapter 11 Plan and (b) an
order by the Bankruptcy Court confirming the Chapter 11 Plan becomes a final and
non-appealable order.

          (d) "Solicitation Materials" means a disclosure statement for the
Chapter 11 Plan prepared in accordance with the requirements of section 1125 of
the Bankruptcy Code, ballots to vote for or against the Chapter 11 Plan and
other related materials that are distributed by the Company in accordance with
an order of the Bankruptcy Court authorizing, among other things, procedures for
the solicitation of votes on the Chapter 11 Plan.

          (e) "Transfer" means to, directly or indirectly (whether by one or
more transactions) (i) sell, pledge, assign, encumber, grant any option or any
right with respect to, transfer or otherwise dispose of any participation or
interest (whether a voting interest, an economic interest or otherwise) in or
(ii) enter into an agreement, commitment or other arrangement to sell, pledge,
assign, encumber, grant any option or any right with respect to, transfer or
otherwise dispose of any participation or interest (whether a voting interest,
an economic interest or otherwise) in, or the act thereof.

     2. Agreement to Complete Restructuring and Consummate Concurso Plan and
Chapter 11 Plan.

     From and after the date hereof and until the earlier of the (i) termination
of this Agreement in accordance with the terms specified herein and (ii) the
Effective Date:

          (a) The Additional Supporting Holder agrees to vote (or, in the case
of managed accounts, instruct the custodial agent to vote) all Existing Notes
held or owned (directly or indirectly) by the Additional Supporting Holder to
accept the Chapter 11 Plan promptly upon receipt of the Solicitation Materials
(but in all events before any deadlines for submitting such votes). The
Additional Supporting Holder may not revoke, withdraw or modify any ballot
tendered in connection with a vote to accept the Chapter 11 Plan; provided,
however, that if any term or condition of the Chapter 11 Plan is modified,
amended or waived in any material respect such that a Supporting Holder shall
have the right to revoke, withdraw or modify its vote to accept the Chapter 11
Plan under applicable law or otherwise, then the Additional Supporting Holder
shall have the right to revoke, withdraw, or modify its vote to accept the
Chapter 11 Plan prior to the Effective Date.

          (b) The Additional Supporting Holder agrees that (i) it will not,
directly or indirectly, execute, vote (or, in the case of managed accounts,
instruct the custodial agent to

                                      2

<PAGE>

vote) for, consent to, provide any support for, participate in the formulation
of, or solicit or encourage others to formulate any bankruptcy plan, convenio
concursal, restructuring, reorganization, liquidation or similar arrangement (in
whatever jurisdiction proposed) for the Company or of any of its affiliates
other than the Restructuring, the Concurso Plan, and the Chapter 11 Plan; (ii)
it will not, directly or indirectly, object to, or otherwise commence any
proceeding to oppose, the Restructuring or the Concurso Plan or Chapter 11 Plan
and will not, directly or indirectly, take any action in opposition to, or that
would unreasonably delay the consummation of, the Restructuring or the Concurso
Plan or Chapter 11 Plan; (iii) it will support the Restructuring and approval of
the Concurso Plan and the Chapter 11 Plan; (iv) if an FRN holder, it will not
request (or support any other FRN holder or other party requesting) or otherwise
file any motion or commence any action or proceeding, seeking adequate
protection; (v) if an FRN holder, except as otherwise required to effect the
Restructuring, it will not, directly or indirectly through the collateral
trustee for the FRNs, take or cause to be taken, by exercise of rights under the
stock trusts securing the guarantees of the FRNs, any shareholder action of the
Company; and (vi) it will support the restructuring of Servicios Corporativos
Satelitales, S.A. de C.V. (the "Servicios Restructuring") and, if an FRN holder,
except as otherwise required to effect the Servicios Restructuring, it will not,
directly or indirectly through the collateral trustee for the FRNs, take or
cause to be taken, by exercise of rights under the stock trusts securing the
guarantees of the FRNs, any shareholder action of Servicios; provided, however,
that nothing in this Agreement shall require the Additional Supporting Holder to
indemnify the indenture trustee for the FRNs or the HYBs or the collateral
trustee for the FRNs.

          (c) The Additional Supporting Holder shall (x) forbear (and agrees not
to give instructions to any applicable indenture trustee or agent or other
person that are inconsistent with the terms and conditions of this Agreement)
from the exercise of any rights, powers or remedies against the Company or any
affiliate it may have (including the right to call a default or seek payment or
any other relief in connection with any of the Existing Notes) under (a) the
Existing Notes, (b) any applicable documents governing any of the Existing
Notes, (c) any applicable law in connection with the Existing Notes and/or such
documents or (d) the Concurso Proceeding and (y) not challenge or cause to be
challenged the order entered by the Mexican Bankruptcy Court approving the
Concurso Plan; provided, however, that this section 2(c) shall not apply to
actions in furtherance of the Restructuring that are consistent with this
Agreement and the Concurso Plan or the Chapter 11 Plan. Additionally, the
Additional Supporting Holder will direct the indenture trustee for the FRNs and
the HYBs and any collateral trustee for the FRNs, each as reasonably necessary
and as applicable, to take actions in furtherance of the Restructuring, the
Concurso Plan, and the Chapter 11 Plan; provided, further, that no direction
shall be required if it involves indemnification by the Additional Supporting
Holder of any party.

     3. Transfer of Existing Notes; Acquisition of FRNs or HYBs.

          (a) The Additional Supporting Holder hereby agrees that it shall not
Transfer any of the Existing Notes unless the transferee executes the Instrument
of Accession attached hereto as Exhibit B. The transferee must deliver to the
Company a copy of such executed Instrument of Accession within three (3)
business days after the effectiveness of any Transfer. Upon the delivery of such
executed Instrument of Accession, the Additional Supporting Holder shall have no
further obligation or liability hereunder with respect to the transferred
Existing Notes (and, in the case of a Transfer of all Existing Notes held by the
Additional Supporting

                                      3

<PAGE>

Holder, shall have no further obligation or liability hereunder whatsoever)
other than for any default by the Additional Supporting Holder that occurred
prior to the effectiveness of the Transfer. If the Additional Supporting Holder
Transfers any Existing Notes without the transferee executing and delivering the
Instrument of Accession to the Company in accordance with this section 3 (a),
the Transfer of such Existing Notes shall be deemed ineffective to transfer any
right to accept or reject the Chapter 11 Plan, which right shall remain with and
be exercised only by the Additional Supporting Holder.

          (b) In addition to the restrictions specified in Section 3(a), the
Additional Supporting Holder, except if is not domiciled in the United States of
America, hereby agrees that prior to delivery of its vote to accept the Chapter
11 Plan, it shall not, without the prior written consent of the Company (not to
be unreasonably withheld), Transfer any Existing Note that is an FRN to a
transferee unless the transferee is (x) a Person (as defined in the Bankruptcy
Code) domiciled in the United States of America or with a place of business in
the United States of America, (y) is a fund managed by a person domiciled in the
United States of America or with a place of business in the United States of
America or (z) already a holder of FRNs and is party to an agreement with the
Company to support the Restructuring.

          (c) The Additional Supporting Holder further agrees that any and all
FRNs or HYBs acquired by such Additional Supporting Holder following the date of
this Agreement shall be subject to the terms and conditions of this Agreement
and shall be deemed to be Existing Notes and subject to the same treatment as
the Existing Notes held by such Additional Supporting Holder as of the date
hereof. Notwithstanding anything contrary to the foregoing, if the Additional
Supporting Holder acquires or disposes of any FRNs or HYBs after the date
hereof, it shall promptly send a written notice to the Company and all other
parties identified in Section 10 hereof, specifying the type, amount and/or
number (as applicable) of FRNs or HYBs acquired or disposed of.

     4. Termination. This Agreement shall automatically terminate upon delivery
by the Conciliador to the Mexican Bankruptcy Court of the termination notice
referenced in Clause Seventh of the Concurso Plan. This Agreement may be
terminated, unless the Effective Date has occurred, as follows:

          (a) By the Additional Supporting Holder, if (i) an order confirming
the Chapter 11 Plan is not entered on the docket of the Bankruptcy Court on or
before January 31, 2007; (ii) the Effective Date has not occurred on or before
the date that is sixty (60) days thereafter; (iii) the Restructuring Agreement
dated as of March 31, 2006 between the Company, the Supporting Holders and
certain other parties (the "Restructuring Agreement") shall be terminated as to
all parties thereto; (iv) the Concurso Proceeding shall be converted to a
quiebra under article 167 of the MBRA; (v) if the Chapter 11 Case shall be
converted to a case under Chapter 7 of the Bankruptcy Code or a liquidating
chapter 11 case; or (vi) if there is a total loss of the Company's satellite
known as Satmex 6 Satellite prior to the Effective Date.

          (b) By the Company, if the Restructuring Agreement shall be terminated
as to all parties thereto.

                                       4

<PAGE>

     5. Representations by Additional Supporting Holder.

          (a) The Additional Supporting Holder represents and warrants to the
other signatories to this Agreement that:

          (i) if an entity, it is duly organized, validly existing and in good
     standing (to the extent applicable) under the laws of the jurisdiction of
     its organization and has all requisite corporate, partnership or other
     power and authority to enter into this Agreement and to carry out the
     transactions contemplated by, and perform its respective obligations under,
     this Agreement;

          (ii) the execution and delivery of this Agreement and the performance
     of its obligations hereunder have been duly authorized by all necessary
     corporate, partnership or other action on its part;

          (iii) the execution, delivery and performance by it of this Agreement
     does not (A) violate any provision of applicable law applicable to it or
     its certificate of incorporation or bylaws, or other organizational
     documents, or (B) conflict with, result in the breach of or constitute
     (with due notice or lapse of time or both) a default under any contractual
     obligations to which it is a party or under its certificate of
     incorporation, bylaws, or other governing instruments, in each case so that
     such violation, breach or conflict would materially adversely affect the
     ability of the Company to consummate the Chapter 11 Plan;

          (iv) this Agreement is a legally valid and binding obligation of it,
     enforceable against it in accordance with the terms hereof, except as
     enforceability may be limited by applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws, including the provisions of the
     MBRA affecting the enforcement of creditors' rights generally and by
     general equitable principles (whether enforcement is sought by proceedings
     in equity or at law);

          (v) as of the date of this Agreement, it is the beneficial owner of,
     or the investment adviser or manager for the beneficial owners of, or the
     indirect parent of the entity that holds, the Existing Notes, as specified
     on the signature page hereto, with full power and authority to vote and
     dispose of such securities;

          (vi) it has reviewed, with the assistance of professional and legal
     advisors of its choosing, all information necessary to decide to support
     the Restructuring as described herein on an informed basis;

          (vii) it is an "Accredited Investor" as defined in Rule 501 of
     Regulation D under the Securities Act; and

          (viii) it does not owe any fiduciary or similar duty to any other
     Person (as defined in the Bankruptcy Code) that would prevent it from
     taking any action required of it under this Agreement.

                                       5

<PAGE>

     6. No Solicitation. This Agreement is not intended to be, and each party to
this Agreement acknowledges that it is not, a solicitation of the acceptance or
rejection of any plan of reorganization for the Company pursuant to section 1125
of the Bankruptcy Code.

     7. Further Assurances. Each of the signatories to this Agreement hereby
further covenants and agrees to execute and deliver all further documents,
agreements and take all further action that in good faith may be reasonably
necessary or desirable in order to enforce and effectively implement the terms
and conditions of this Agreement.

     8. No Waiver. Each of the signatories to this Agreement expressly
acknowledges and agrees that, except as expressly provided in this Agreement,
nothing in this Agreement is intended to, or does, in any manner waive, limit,
impair or restrict the ability of any party to this Agreement to protect and
preserve all of its rights, remedies and interests, including without
limitation, with respect to its claims against and interests in the Company or
any of its assets.

     9. Complete Agreement. This Agreement, including the exhibits and signature
pages hereto, constitutes the complete agreement between the parties to this
Agreement with respect to the subject matter hereof and supersedes all prior and
contemporaneous negotiations, agreements and understandings with respect to the
subject matter hereof. The provisions of this Agreement shall be interpreted in
a reasonable manner to effect the intent of the parties to this Agreement. In
the event that any provision of this Agreement conflicts with any exhibits or
signature pages hereto, the provisions of this Agreement shall be controlling.
If the Additional Supporting Holder should at any time become a party to the
Restructuring Agreement, and if there is any conflict between this Agreement and
that Restructuring Agreement, the Restructuring Agreement shall govern.

     10. Notices. All notices, requests, demands, claims and other
communications hereunder shall be in writing and shall be (a) transmitted by
hand delivery, (b) mailed by first class, registered or certified mail, postage
prepaid, (c) transmitted by overnight courier or (d) transmitted by telecopy,
and in each case,

                                       6

<PAGE>

<TABLE>
<S>                                   <C>
if to the Company:                    if to the Additional Supporting Holder:

Rodolfo Gaona #86                     ***
Col. Lomas de Sotelo
Mexico D.F. 11200 Mexico
Telephone: (52) (55) 2629-5808
Facsimile: (52) (55) 2629-5895
Attention: General Counsel

with a copy (which shall not          with a copy (which shall not constitute
constitute notice) to:                notice) to:

Milbank, Tweed, Hadley & McCloy LLP   Wilmer Cutler Pickering Hale and Dorr LLP
1 Chase Manhattan Plaza               60 State Street
New York, NY 10005                    Boston, MA 02109
Telephone: (212) 530-5000             Telephone: (617) 526-6000
Fax: (212) 530-5219                   Facsimile: (617) 526-5000
Attention: Luc A. Despins, Esq.       Attention: Dennis Jenkins, Esq.
           Matthew S. Barr, Esq.                 George W. Shuster, Jr., Esq.

                                      and

                                      Akin Gump Strauss Hauer & Feld LLP
                                      590 Madison Avenue
                                      New York, NY 10022
                                      Telephone: (212) 872-1000
                                      Facsimile: (212) 872-1002
                                      Attention: Michael S. Stamer, Esq.
                                                 Steven H. Scheinman. Esq.
</TABLE>

Notices mailed or transmitted in accordance with the foregoing shall be deemed
to have been given upon receipt. Notices may be given by United States of
America counsel to the party hereto.

     11. Several Liability. The obligations of the parties to this Agreement
hereunder are ratable and several and not joint nor joint and several, and no
party to this Agreement shall be liable for any breach or nonperformance by any
other party to this Agreement.

     12. Governing Law. THIS AGREEMENT, THE RIGHTS AND OBLIGATIONS OF THE
PARTIES UNDER THIS AGREEMENT, AND ANY CLAIM OR CONTROVERSY DIRECTLY OR
INDIRECTLY BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT (WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER
THEORY), INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, SHALL
IN ALL RESPECTS BE GOVERNED BY AND INTERPRETED, CONSTRUED, AND DETERMINED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK (WITHOUT REGARD TO
ANY CONFLICTS OF LAW PROVISION THAT WOULD REQUIRE THE APPLICATION OF THE LAW OF
ANY OTHER JURISDICTION).

*** Confidential treatment requested by Satmex.

                                       7

<PAGE>

     13. Headings. The headings of the sections, paragraphs and subsections of
this Agreement are inserted for convenience only and shall not affect the
interpretation hereof.

     14. Good Faith. Each of the signatories to this Agreement agrees to
cooperate in good faith with each other to facilitate the performance by the
parties of their respective obligations hereunder and the purposes of this
Agreement.

     15. Amendments and Modifications. This Agreement may be amended, modified,
or supplemented, and any term or condition of this Agreement may be waived, only
in writing signed by the Company and the Additional Supporting Holder.
Notwithstanding the foregoing, the Company may not agree to any amendment,
modification, supplement or waiver that has, or could reasonably be expected to
have, a material adverse effect on the Restructuring or the rights of the
Supporting FRN Holders or Supporting HYB Holders under the Restructuring
Agreement, unless such amendment, modification, supplement or waiver has been
consented to by a majority (in principal amount) of the Supporting FRN Holders
and a majority (in principal amount) of the Supporting HYB Holders.

     16. Jurisdiction. By its execution and delivery of this Agreement, each of
the signatories to this Agreement (i) irrevocably and unconditionally agrees
that so long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, any legal action, suit or proceeding against it with respect to
any matter under or arising out of or in connection with this Agreement or for
recognition or enforcement of any judgment rendered in any such action, suit or
proceeding, shall be brought exclusively in the Bankruptcy Court and (ii) so
long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, expressly waives any other forum that may correspond by virtue
of domicile, whether present or future, or otherwise. The foregoing shall not
preclude the jurisdiction of the Mexican Bankruptcy Court with respect to any
legal action, suit or proceeding against it with respect to any matter under or
arising out of or in connection with the Concurso Plan contemplated by this
Agreement, and the rights and obligations of the parties thereunder, including
all matters of construction, validity and performance thereunder.

     17. Specific Performance. It is understood and agreed by each of the
signatories to this Agreement that money damages may not be a sufficient remedy
for any breach of this Agreement by any party and each non-breaching party shall
be entitled to seek specific performance, injunctive, recessionary or other
equitable relief as a remedy for any such breach.

     18. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same agreement. Delivery of an executed counterpart of a
signature page by telecopier shall be effective as delivery of a manually
executed counterpart. Any Person may become party to this Agreement on or after
the date of this Agreement by executing a signature page to this Agreement
and/or, if applicable, in accordance with section 5(c), executing an Accession
Agreement. Upon the delivery of such executed signature pages and/or Accession
Agreement to the Company, such Person shall be deemed to be a Supporting Holder
as if it had been an initial signatory hereto.

                                       8

<PAGE>

     19. Consideration. It is hereby acknowledged by each of the parties that no
consideration (other than the obligations of the other parties under this
Agreement) shall be due or paid to the parties for their agreement to support
the transactions contemplated herein.

     20. Successors and Assigns. This Agreement is intended to bind and inure to
the benefit of the parties to this Agreement and their respective successors,
permitted assigns, heirs, executors, administrators and representatives.

                                       9

<PAGE>

     IN WITNESS WHEREOF, each of the parties to this Agreement has caused this
Agreement to be executed and delivered by its duly authorized officers as of the
date first written above.

                                        SATELITES MEXICANOS, S.A. DE C.V.

                                        By: /s/ Cynthia Pelini Addario
                                            ------------------------------------
                                        Name: Cynthia Pelini Addario
                                        Title: EVP Finance & Administration

                                        By: /s/ Carmen Ochoa
                                            ------------------------------------
                                        Name: Carmen Ochoa
                                        Title: General Counsel

                                       10

<PAGE>

                                        ADDITIONAL SUPPORTING HOLDER

                                                   ***

                                        By:          ***
                                            ------------------------------------
                                        Name:        ***
                                        Title:       ***

                                                 ***                 hereby
                                        represents that it is the beneficial
                                        owner and/or investment advisor or
                                        manager (with the power to vote and
                                        dispose of all or substantially all of
                                        the Existing Notes held on behalf of
                                        their beneficial owner) of discretionary
                                        accounts for holders of beneficial
                                        owners of, the aggregate principal
                                        amount of the Existing Notes listed
                                        below.

                                        Principal Amount of FRNs: ***

                                        Principal Amount of HYBs: N/A

***  Confidential Treatment Requested by Satmex

                                       11

<PAGE>

                                    EXHIBIT A

                                  CONCURSO PLAN

                                     OMITTED

                                      A-1

<PAGE>

                                    EXHIBIT B

                             INSTRUMENT OF ACCESSION

     The undersigned __________________ (the "Transferee"), as a condition
precedent to becoming the beneficial holder and/or owner of [INSERT FACE AMOUNT
OF FRNS] of [Senior Secured Floating Rate Notes due June 30, 2004 ("FRNs")]
[and/or [INSERT FACE AMOUNT OF HYBS] of 10-1/8% Senior Notes due 2004 ("HYBs")]
(the "Existing Notes") issued by SATELITES MEXICANOS, S.A. DE C.V. (the
"Company"), (a) hereby agrees to become a party to and bound by the terms and
conditions of that certain Support Agreement by and between the Company and
[__________________] (the "Additional Supporting Holder"), dated as of May ____,
2006 (as amended or modified, the "Support Agreement") and assume all of the
Additional Supporting Holder's(1) obligations thereunder, (b) hereby agrees that
the Existing Notes, together with any FRNs and/or HYBs previously owned or
hereafter acquired by the Transferee, shall be subject to and bound by the
Support Agreement, and (c) represents and warrants that it has reviewed, with
the assistance of professional and legal advisors of its choosing, all
information necessary for such Transferee to decide to support the Restructuring
through the Chapter 11 Plan as described in the Support Agreement and Concurso
Plan. This Instrument of Accession shall take effect and shall become an
integral part of the Support Agreement immediately upon execution and delivery
to the Company of this Instrument and the Transferee shall be deemed to be a
party to the Support Agreement (and bound by all of its rights and obligations)
as if it had been an initial signatory thereto.

     IN WITNESS WHEREOF, this INSTRUMENT OF ACCESSION has been duly executed by
or on behalf of the undersigned as of ____________, 2006.

                                        [Entity Name]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        Contact Information:

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

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

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

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

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

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

----------
(1)  Capitalized terms not defined herein shall have the meaning ascribed to
     such term in the Support Agreement.

                                       B-1

<PAGE>

ACKNOWLEDGED:

SATELITES MEXICANOS, S.A. DE C.V.

By:
    ---------------------------------
Name:
      -------------------------------
Title:
       ------------------------------

                                       B-2
<PAGE>

                                SUPPORT AGREEMENT

     This Support Agreement (together with the exhibits and signature pages
hereto, the "Agreement"), dated as of May 10, 2006, is entered into by and among
Satelites Mexicanos, S.A. de C.V. (the "Company") and the undersigned beneficial
owner (or investment manager or advisor with power to vote or dispose of all or
substantially all of the relevant securities on behalf of the beneficial owner)
(the "Additional Supporting Holder") of the Company's Senior Secured Floating
Rate Notes due June 30, 2004 (the "FRNs") and/or the Company's 10-1/8% Senior
Notes due November 1, 2004 (the "HYBs") identified on the signature page hereto
(the "Existing Notes").

                                    RECITALS

     WHEREAS, on June 29, 2005, the Company initiated a proceeding under the Ley
de Concursos Mercantiles (as amended from time to time, the "MBRA"), which
proceeding is currently pending before the Second Federal District Court for
Civil Matters in Mexico City, Mexico under file number 129/2005 (the "Concurso
Proceeding");

     WHEREAS, subject to certain conditions, the Company; certain beneficial
holders of FRNs (the "Supporting FRN Holders"); certain beneficial holders of
HYBs (the "Supporting HYB Holders", and, together with the Supporting FRN
Holders, the "Supporting Holders"); and certain equity holders of the Company
are parties to that certain Restructuring Agreement (defined below) pursuant to
which they have agreed to support the restructuring of the debt and equity of
the Company on substantially the terms and conditions described in the Concurso
Agreement attached hereto as Exhibit A (the "Concurso Plan") through the (i)
approval of the Concurso Plan and termination of the Concurso Proceeding
pursuant to the MBRA and (ii) the consummation of the Chapter 11 Plan (defined
below) (the "Restructuring");

     WHEREAS, the agreement of the Company and the Supporting HYB Holders to
execute and deliver the Concurso Plan in accordance with the Restructuring
Agreement is contingent upon, inter alia, the Additional Supporting Holder
agreeing, pursuant to the terms hereof, to support the Restructuring;

     WHEREAS, as specified further herein, to consummate the implementation of
the Restructuring, the Additional Supporting Holder is prepared to commit, on
the terms and subject to the conditions of this Agreement and applicable
bankruptcy law, to, if and when solicited to do so, vote (or, in the case of
managed accounts, instruct its custodial agents to vote) to accept the Chapter
11 Plan, to support confirmation of the Chapter 11 Plan, and to perform its
other obligations hereunder, if any.

     NOW, THEREFORE, in consideration of the promises and the mutual covenants
and agreements set forth in this Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
each of the parties signatory to this Agreement, intending to be bound hereby,
agrees as follows:

     1. Definitions. Capitalized terms not otherwise defined above or in this
Section 1 shall have the meaning ascribed to them in the Concurso Plan. As used
in this Agreement, the following terms shall have the following meanings:

<PAGE>

          (a) "Bankruptcy Code" means title 11 of the United States Code, 11
U.S.C. Sections 101-1532 (as may be amended).

          (b) "Chapter 11 Plan" means a plan of reorganization with respect to
the Company under the Bankruptcy Code, which plan shall (i) be filed in the
United States Bankruptcy Court for the Southern District of New York in
accordance with applicable provisions of the Bankruptcy Code and (ii) provide
for the implementation of the Restructuring substantially on the terms and
conditions described in the Concurso Plan.

          (c) "Effective Date" means the first business day on which (a) all
conditions precedent to the effectiveness of the Chapter 11 Plan have been
satisfied or waived pursuant to the terms of the Chapter 11 Plan and (b) an
order by the Bankruptcy Court confirming the Chapter 11 Plan becomes a final and
non-appealable order.

          (d) "Solicitation Materials" means a disclosure statement for the
Chapter 11 Plan prepared in accordance with the requirements of section 1125 of
the Bankruptcy Code, ballots to vote for or against the Chapter 11 Plan and
other related materials that are distributed by the Company in accordance with
an order of the Bankruptcy Court authorizing, among other things, procedures for
the solicitation of votes on the Chapter 11 Plan.

          (e) "Transfer" means to, directly or indirectly (whether by one or
more transactions) (i) sell, pledge, assign, encumber, grant any option or any
right with respect to, transfer or otherwise dispose of any participation or
interest (whether a voting interest, an economic interest or otherwise) in or
(ii) enter into an agreement, commitment or other arrangement to sell, pledge,
assign, encumber, grant any option or any right with respect to, transfer or
otherwise dispose of any participation or interest (whether a voting interest,
an economic interest or otherwise) in, or the act thereof.

     2. Agreement to Complete Restructuring and Consummate Concurso Plan and
Chapter 11 Plan.

     From and after the date hereof and until the earlier of the (i) termination
of this Agreement in accordance with the terms specified herein and (ii) the
Effective Date:

          (a) The Additional Supporting Holder agrees to vote (or, in the case
of managed accounts, instruct the custodial agent to vote) all Existing Notes
held or owned (directly or indirectly) by the Additional Supporting Holder to
accept the Chapter 11 Plan promptly upon receipt of the Solicitation Materials
(but in all events before any deadlines for submitting such votes). The
Additional Supporting Holder may not revoke, withdraw or modify any ballot
tendered in connection with a vote to accept the Chapter 11 Plan; provided,
however, that if any term or condition of the Chapter 11 Plan is modified,
amended or waived in any material respect such that a Supporting Holder shall
have the right to revoke, withdraw or modify its vote to accept the Chapter 11
Plan under applicable law or otherwise, then the Additional Supporting Holder
shall have the right to revoke, withdraw, or modify its vote to accept the
Chapter 11 Plan prior to the Effective Date.

                                        2

<PAGE>

          (b) The Additional Supporting Holder agrees that (i) it will not,
directly or indirectly, execute, vote (or, in the case of managed accounts,
instruct the custodial agent to vote) for, consent to, provide any support for,
participate in the formulation of, or solicit or encourage others to formulate
any bankruptcy plan, convenio concursal, restructuring, reorganization,
liquidation or similar arrangement (in whatever jurisdiction proposed) for the
Company or of any of its affiliates other than the Restructuring, the Concurso
Plan, and the Chapter 11 Plan; (ii) it will not, directly or indirectly, object
to, or otherwise commence any proceeding to oppose, the Restructuring or the
Concurso Plan or Chapter 11 Plan and will not, directly or indirectly, take any
action in opposition to, or that would unreasonably delay the consummation of,
the Restructuring or the Concurso Plan or Chapter 11 Plan; (iii) it will support
the Restructuring and approval of the Concurso Plan and the Chapter 11 Plan;
(iv) if an FRN holder, it will not request (or support any other FRN holder or
other party requesting) or otherwise file any motion or commence any action or
proceeding, seeking adequate protection; (v) if an FRN holder, except as
otherwise required to effect the Restructuring, it will not, directly or
indirectly through the collateral trustee for the FRNs, take or cause to be
taken, by exercise of rights under the stock trusts securing the guarantees of
the FRNs, any shareholder action of the Company; and (vi) it will support the
restructuring of Servicios Corporativos Satelitales, S.A. de C.V. (the
"Servicios Restructuring") and, if an FRN holder, except as otherwise required
to effect the Servicios Restructuring, it will not, directly or indirectly
through the collateral trustee for the FRNs, take or cause to be taken, by
exercise of rights under the stock trusts securing the guarantees of the FRNs,
any shareholder action of Servicios; provided, however, that nothing in this
Agreement shall require the Additional Supporting Holder to indemnify the
indenture trustee for the FRNs or the HYBs or the collateral trustee for the
FRNs.

          (c) The Additional Supporting Holder shall (x) forbear (and agrees not
to give instructions to any applicable indenture trustee or agent or other
person that are inconsistent with the terms and conditions of this Agreement)
from the exercise of any rights, powers or remedies against the Company or any
affiliate it may have (including the right to call a default or seek payment or
any other relief in connection with any of the Existing Notes) under (a) the
Existing Notes, (b) any applicable documents governing any of the Existing
Notes, (c) any applicable law in connection with the Existing Notes and/or such
documents or (d) the Concurso Proceeding and (y) not challenge or cause to be
challenged the order entered by the Mexican Bankruptcy Court approving the
Concurso Plan; provided, however, that this section 2(c) shall not apply to
actions in furtherance of the Restructuring that are consistent with this
Agreement and the Concurso Plan or the Chapter 11 Plan. Additionally, the
Additional Supporting Holder will direct the indenture trustee for the FRNs and
the HYBs and any collateral trustee for the FRNs, each as reasonably necessary
and as applicable, to take actions in furtherance of the Restructuring, the
Concurso Plan, and the Chapter 11 Plan; provided, further, that no direction
shall be required if it involves indemnification by the Additional Supporting
Holder of any party.

     3. Transfer of Existing Notes; Acquisition of FRNs or HYBs.

          (a) The Additional Supporting Holder hereby agrees that it shall not
Transfer any of the Existing Notes unless the transferee executes the Instrument
of Accession attached hereto as Exhibit B. The transferee must deliver to the
Company a copy of such executed Instrument of Accession within three (3)
business days after the effectiveness of any Transfer. Upon the delivery of such
executed Instrument of Accession, the Additional Supporting Holder

                                        3

<PAGE>

shall have no further obligation or liability hereunder with respect to the
transferred Existing Notes (and, in the case of a Transfer of all Existing Notes
held by the Additional Supporting Holder, shall have no further obligation or
liability hereunder whatsoever) other than for any default by the Additional
Supporting Holder that occurred prior to the effectiveness of the Transfer. If
the Additional Supporting Holder Transfers any Existing Notes without the
transferee executing and delivering the Instrument of Accession to the Company
in accordance with this section 3(a), the Transfer of such Existing Notes shall
be deemed ineffective to transfer any right to accept or reject the Chapter 11
Plan, which right shall remain with and be exercised only by the Additional
Supporting Holder.

          (b) In addition to the restrictions specified in Section 3(a), the
Additional Supporting Holder, except if is not domiciled in the United States of
America, hereby agrees that prior to delivery of its vote to accept the Chapter
11 Plan, it shall not, without the prior written consent of the Company (not to
be unreasonably withheld), Transfer any Existing Note that is an FRN to a
transferee unless the transferee is (x) a Person (as defined in the Bankruptcy
Code) domiciled in the United States of America or with a place of business in
the United States of America, (y) is a fund managed by a person domiciled in the
United States of America or with a place of business in the United States of
America or (z) already a holder of FRNs and is party to an agreement with the
Company to support the Restructuring.

          (c) The Additional Supporting Holder further agrees that any and all
FRNs or HYBs acquired by such Additional Supporting Holder following the date of
this Agreement shall be subject to the terms and conditions of this Agreement
and shall be deemed to be Existing Notes and subject to the same treatment as
the Existing Notes held by such Additional Supporting Holder as of the date
hereof. Notwithstanding anything contrary to the foregoing, if the Additional
Supporting Holder acquires or disposes of any FRNs or HYBs after the date
hereof, it shall promptly send a written notice to the Company and all other
parties identified in Section 10 hereof, specifying the type, amount and/or
number (as applicable) of FRNs or HYBs acquired or disposed of.

     4. Termination. This Agreement shall automatically terminate upon delivery
by the Conciliador to the Mexican Bankruptcy Court of the termination notice
referenced in Clause Seventh of the Concurso Plan. This Agreement may be
terminated, unless the Effective Date has occurred, as follows:

          (a) By the Additional Supporting Holder, if (i) an order confirming
the Chapter 11 Plan is not entered on the docket of the Bankruptcy Court on or
before January 31, 2007; (ii) the Effective Date has not occurred on or before
the date that is sixty (60) days thereafter; (iii) the Restructuring Agreement
dated as of March 31, 2006 between the Company, the Supporting Holders and
certain other parties (the "Restructuring Agreement") shall be terminated as to
all parties thereto; (iv) the Concurso Proceeding shall be converted to a
quiebra under article 167 of the MBRA; (v) if the Chapter 11 Case shall be
converted to a case under Chapter 7 of the Bankruptcy Code or a liquidating
chapter 11 case; or (vi) if there is a total loss of the Company's satellite
known as Satmex 6 Satellite prior to the Effective Date.

          (b) By the Company, if the Restructuring Agreement shall be terminated
as to all parties thereto.

                                        4

<PAGE>

     5. Representations by Additional Supporting Holder.

          (a) The Additional Supporting Holder represents and warrants to the
other signatories to this Agreement that:

          (i) if an entity, it is duly organized, validly existing and in good
     standing (to the extent applicable) under the laws of the jurisdiction of
     its organization and has all requisite corporate, partnership or other
     power and authority to enter into this Agreement and to carry out the
     transactions contemplated by, and perform its respective obligations under,
     this Agreement;

          (ii) the execution and delivery of this Agreement and the performance
     of its obligations hereunder have been duly authorized by all necessary
     corporate, partnership or other action on its part;

          (iii) the execution, delivery and performance by it of this Agreement
     does not (A) violate any provision of applicable law applicable to it or
     its certificate of incorporation or bylaws, or other organizational
     documents, or (B) conflict with, result in the breach of or constitute
     (with due notice or lapse of time or both) a default under any contractual
     obligations to which it is a party or under its certificate of
     incorporation, bylaws, or other governing instruments, in each case so that
     such violation, breach or conflict would materially adversely affect the
     ability of the Company to consummate the Chapter 11 Plan;

          (iv) this Agreement is a legally valid and binding obligation of it,
     enforceable against it in accordance with the terms hereof, except as
     enforceability may be limited by applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws, including the provisions of the
     MBRA affecting the enforcement of creditors' rights generally and by
     general equitable principles (whether enforcement is sought by proceedings
     in equity or at law);

          (v) as of the date of this Agreement, it is the beneficial owner of,
     or the investment adviser or manager for the beneficial owners of, or the
     indirect parent of the entity that holds, the Existing Notes, as specified
     on the signature page hereto, with full power and authority to vote and
     dispose of such securities;

          (vi) it has reviewed, with the assistance of professional and legal
     advisors of its choosing, all information necessary to decide to support
     the Restructuring as described herein on an informed basis;

          (vii) it is an "Accredited Investor" as defined in Rule 501 of
     Regulation D under the Securities Act; and

          (viii) it does not owe any fiduciary or similar duty to any other
     Person (as defined in the Bankruptcy Code) that would prevent it from
     taking any action required of it under this Agreement.

                                        5

<PAGE>

     6. No Solicitation. This Agreement is not intended to be, and each party to
this Agreement acknowledges that it is not, a solicitation of the acceptance or
rejection of any plan of reorganization for the Company pursuant to section 1125
of the Bankruptcy Code.

     7. Further Assurances. Each of the signatories to this Agreement hereby
further covenants and agrees to execute and deliver all further documents,
agreements and take all further action that in good faith may be reasonably
necessary or desirable in order to enforce and effectively implement the terms
and conditions of this Agreement.

     8. No Waiver. Each of the signatories to this Agreement expressly
acknowledges and agrees that, except as expressly provided in this Agreement,
nothing in this Agreement is intended to, or does, in any manner waive, limit,
impair or restrict the ability of any party to this Agreement to protect and
preserve all of its rights, remedies and interests, including without
limitation, with respect to its claims against and interests in the Company or
any of its assets.

     9. Complete Agreement. This Agreement, including the exhibits and signature
pages hereto, constitutes the complete agreement between the parties to this
Agreement with respect to the subject matter hereof and supersedes all prior and
contemporaneous negotiations, agreements and understandings with respect to the
subject matter hereof. The provisions of this Agreement shall be interpreted in
a reasonable manner to effect the intent of the parties to this Agreement. In
the event that any provision of this Agreement conflicts with any exhibits or
signature pages hereto, the provisions of this Agreement shall be controlling.
If the Additional Supporting Holder should at any time become a party to the
Restructuring Agreement, and if there is any conflict between this Agreement and
that Restructuring Agreement, the Restructuring Agreement shall govern.

     10. Notices. All notices, requests, demands, claims and other
communications hereunder shall be in writing and shall be (a) transmitted by
hand delivery, (b) mailed by first class, registered or certified mail, postage
prepaid, (c) transmitted by overnight courier or (d) transmitted by telecopy,
and in each case,

                                        6

<PAGE>

<TABLE>
<S>                                       <C>
if to the Company:                        if to the Additional Supporting Holder:

Rodolfo Gaona #86
Col. Lomas de Sotelo
Mexico D.F. 11200 Mexico                                     ***
Telephone: (52) (55) 2629-5808
Facsimile: (52) (55) 2629-5895
Attention: General Counsel

with a copy (which shall not constitute   with a copy (which shall not constitute
notice) to:                               notice) to:

Milbank, Tweed, Hadley & McCloy LLP
1 Chase Manhattan Plaza
New York, NY 10005                                          ***
Telephone: (212) 530-5000
Fax: (212) 530-5219
Attention: Luc A. Despins, Esq.
           Matthew S. Barr, Esq.

                                          and

                                          Wilmer Cutler Pickering Hale and Dorr LLP
                                          60 State Street
                                          Boston, MA 02109
                                          Telephone: (617) 526-6000
                                          Facsimile: (617) 526-5000
                                          Attention: Dennis Jenkins, Esq.
                                                     George W. Shuster, Jr., Esq.
                                          and

                                          Akin Gump Strauss Hauer & Feld LLP
                                          590 Madison Avenue
                                          New York, NY 10022
                                          Telephone: (212) 872-1000
                                          Facsimile: (212) 872-1002
                                          Attention: Michael S. Stamer, Esq.
                                                     Steven H. Scheinman. Esq.
</TABLE>

Notices mailed or transmitted in accordance with the foregoing shall be deemed
to have been given upon receipt. Notices may be given by United States of
America counsel to the party hereto.

*** Confidential Treatment Requested by Satmex.

                                        7

<PAGE>

     11. Several Liability. The obligations of the parties to this Agreement
hereunder are ratable and several and not joint nor joint and several, and no
party to this Agreement shall be liable for any breach or nonperformance by any
other party to this Agreement.

     12. Governing Law. THIS AGREEMENT, THE RIGHTS AND OBLIGATIONS OF THE
PARTIES UNDER THIS AGREEMENT, AND ANY CLAIM OR CONTROVERSY DIRECTLY OR
INDIRECTLY BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT (WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER
THEORY), INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, SHALL
IN ALL RESPECTS BE GOVERNED BY AND INTERPRETED, CONSTRUED, AND DETERMINED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK (WITHOUT REGARD TO
ANY CONFLICTS OF LAW PROVISION THAT WOULD REQUIRE THE APPLICATION OF THE LAW OF
ANY OTHER JURISDICTION).

     13. Headings. The headings of the sections, paragraphs and subsections of
this Agreement are inserted for convenience only and shall not affect the
interpretation hereof.

     14. Good Faith. Each of the signatories to this Agreement agrees to
cooperate in good faith with each other to facilitate the performance by the
parties of their respective obligations hereunder and the purposes of this
Agreement.

     15. Amendments and Modifications. This Agreement may be amended, modified,
or supplemented, and any term or condition of this Agreement may be waived, only
in writing signed by the Company and the Additional Supporting Holder.
Notwithstanding the foregoing, the Company may not agree to any amendment,
modification, supplement or waiver that has, or could reasonably be expected to
have, a material adverse effect on the Restructuring or the rights of the
Supporting FRN Holders or Supporting HYB Holders under the Restructuring
Agreement, unless such amendment, modification, supplement or waiver has been
consented to by a majority (in principal amount) of the Supporting FRN Holders
and a majority (in principal amount) of the Supporting HYB Holders.

     16. Jurisdiction. By its execution and delivery of this Agreement, each of
the signatories to this Agreement (i) irrevocably and unconditionally agrees
that so long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, any legal action, suit or proceeding against it with respect to
any matter under or arising out of or in connection with this Agreement or for
recognition or enforcement of any judgment rendered in any such action, suit or
proceeding, shall be brought exclusively in the Bankruptcy Court and (ii) so
long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, expressly waives any other forum that may correspond by virtue
of domicile, whether present or future, or otherwise. The foregoing shall not
preclude the jurisdiction of the Mexican Bankruptcy Court with respect to any
legal action, suit or proceeding against it with respect to any matter under or
arising out of or in connection with the Concurso Plan contemplated by this
Agreement, and the rights and obligations of the parties thereunder, including
all matters of construction, validity and performance thereunder.

                                        8

<PAGE>

     17. Specific Performance. It is understood and agreed by each of the
signatories to this Agreement that money damages may not be a sufficient remedy
for any breach of this Agreement by any party and each non-breaching party shall
be entitled to seek specific performance, injunctive, recessionary or other
equitable relief as a remedy for any such breach.

     18. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same agreement. Delivery of an executed counterpart of a
signature page by telecopier shall be effective as delivery of a manually
executed counterpart. Any Person may become party to this Agreement on or after
the date of this Agreement by executing a signature page to this Agreement
and/or, if applicable, in accordance with section 5(c), executing an Accession
Agreement. Upon the delivery of such executed signature pages and/or Accession
Agreement to the Company, such Person shall be deemed to be a Supporting Holder
as if it had been an initial signatory hereto.

     19. Consideration. It is hereby acknowledged by each of the parties that no
consideration (other than the obligations of the other parties under this
Agreement) shall be due or paid to the parties for their agreement to support
the transactions contemplated herein.

     20. Successors and Assigns. This Agreement is intended to bind and inure to
the benefit of the parties to this Agreement and their respective successors,
permitted assigns, heirs, executors, administrators and representatives.

                                        9

<PAGE>
     IN WITNESS WHEREOF, each of the parties to this Agreement has caused this
Agreement to be executed and delivered by its duly authorized officers as of the
date first written above.

                                        SATELITES MEXICANOS, S.A. DE C.V.

                                        By: /s/ Cynthia Pelini Addario
                                            ------------------------------------
                                        Name: Cynthia Pelini Addario
                                        Title: EVP Finance & Administration

                                        By: /s/ Carmen Ochoa
                                            ------------------------------------
                                        Name: Carmen Ochoa
                                        Title: General Counsel

                                        ADDITIONAL SUPPORTING HOLDER

                                        ***

                                        By: ***
                                            ------------------------------------
                                        Name: ***
                                        Title: ***

                                        *** Incorporated hereby represents that
                                        it is the beneficial owner and/or
                                        investment advisor or manager (with the
                                        power to vote and dispose of all or
                                        substantially all of the Existing Notes
                                        held on behalf of their beneficial
                                        owner) of discretionary accounts for
                                        holders of beneficial owners of, the
                                        aggregate principal amount of the
                                        Existing Notes listed below.

                                        Principal Amount of FRNs: ***

                                        Principal Amount of HYBs: N/A

***  Confidential Treatment Requested by Satmex

                                       10

<PAGE>

                                    EXHIBIT A

                                  CONCURSO PLAN

                                     OMITTED

                                       A-1

<PAGE>

                                    EXHIBIT B

                             INSTRUMENT OF ACCESSION

     The undersigned _______________ (the "Transferee"), as a condition
precedent to becoming the beneficial holder and/or owner of [INSERT FACE AMOUNT
OF FRNS] of [Senior Secured Floating Rate Notes due June 30, 2004 ("FRNs")]
[and/or [INSERT FACE AMOUNT OF HYBs] of 10-1/8% Senior Notes due 2004 ("HYBs")]
(the "Existing Notes") issued by SATELITES MEXICANOS, S.A. DE C.V. (the
"Company"), (a) hereby agrees to become a party to and bound by the terms and
conditions of that certain Support Agreement by and between the Company and
[____________________] (the "Additional Supporting Holder"), dated as of May
___, 2006 (as amended or modified, the "Support Agreement") and assume all of
the Additional Supporting Holder's(1) obligations thereunder, (b) hereby agrees
that the Existing Notes, together with any FRNs and/or HYBs previously owned or
hereafter acquired by the Transferee, shall be subject to and bound by the
Support Agreement, and (c) represents and warrants that it has reviewed, with
the assistance of professional and legal advisors of its choosing, all
information necessary for such Transferee to decide to support the Restructuring
through the Chapter 11 Plan as described in the Support Agreement and Concurso
Plan. This Instrument of Accession shall take effect and shall become an
integral part of the Support Agreement immediately upon execution and delivery
to the Company of this Instrument and the Transferee shall be deemed to be a
party to the Support Agreement (and bound by all of its rights and obligations)
as if it had been an initial signatory thereto.

     IN WITNESS WHEREOF, this INSTRUMENT OF ACCESSION has been duly executed by
or on behalf of the undersigned as of ____________, 2006.

                                        [Entity Name]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        Contact Information:

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

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

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

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

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

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

----------
(1)  Capitalized terms not defined herein shall have the meaning ascribed to
     such term in the Support Agreement.

                                       B-1

<PAGE>

ACKNOWLEDGED:

SATELITES MEXICANOS, S.A. DE C.V.

By:
    ---------------------------------
Name:
      -------------------------------
Title:
       ------------------------------

                                       B-2
<PAGE>

                                SUPPORT AGREEMENT

     This Support Agreement (together with the exhibits and signature pages
hereto, the "Agreement"), dated as of May 12, 2006, is entered into by and among
Satelites Mexicanos, S.A. de C.V. (the "Company") and the undersigned beneficial
owner (or investment manager or advisor with power to vote or dispose of all or
substantially all of the relevant securities on behalf of the beneficial owner)
(the "Additional Supporting Holder") of the Company's Senior Secured Floating
Rate Notes due June 30, 2004 (the "FRNs") and/or the Company's 10-1/8% Senior
Notes due November 1, 2004 (the "HYBs") identified on the signature page hereto
(the "Existing Notes").

                                    RECITALS

     WHEREAS, on June 29, 2005, the Company initiated a proceeding under the Ley
de Concursos Mercantiles (as amended from time to time, the "MBRA"), which
proceeding is currently pending before the Second Federal District Court for
Civil Matters in Mexico City, Mexico under file number 129/2005 (the "Concurso
Proceeding");

     WHEREAS, subject to certain conditions, the Company; certain beneficial
holders of FRNs (the "Supporting FRN Holders"); certain beneficial holders of
HYBs (the "Supporting HYB Holders", and, together with the Supporting FRN
Holders, the "Supporting Holders"); and certain equity holders of the Company
are parties to that certain Restructuring Agreement (defined below) pursuant to
which they have agreed to support the restructuring of the debt and equity of
the Company on substantially the terms and conditions described in the Concurso
Agreement attached hereto as Exhibit A (the "Concurso Plan") through the (i)
approval of the Concurso Plan and termination of the Concurso Proceeding
pursuant to the MBRA and (ii) the consummation of the Chapter 11 Plan (defined
below) (the "Restructuring");

     WHEREAS, the agreement of the Company and the Supporting HYB Holders to
execute and deliver the Concurso Plan in accordance with the Restructuring
Agreement is contingent upon, inter alia, the Additional Supporting Holder
agreeing, pursuant to the terms hereof, to support the Restructuring;

     WHEREAS, as specified further herein, to consummate the implementation of
the Restructuring, the Additional Supporting Holder is prepared to commit, on
the terms and subject to the conditions of this Agreement and applicable
bankruptcy law, to, if and when solicited to do so, vote (or, in the case of
managed accounts, instruct its custodial agents to vote) to accept the Chapter
11 Plan, to support confirmation of the Chapter 11 Plan, and to perform its
other obligations hereunder, if any.

     NOW, THEREFORE, in consideration of the promises and the mutual covenants
and agreements set forth in this Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
each of the parties signatory to this Agreement, intending to be bound hereby,
agrees as follows:

<PAGE>

     1. Definitions. Capitalized terms not otherwise defined above or in this
Section 1 shall have the meaning ascribed to them in the Concurso Plan. As used
in this Agreement, the following terms shall have the following meanings:

          (a) "Bankruptcy Code" means title 11 of the United States Code, 11
U.S.C. Sections 101-1532 (as may be amended).

          (b) "Chapter 11 Plan" means a plan of reorganization with respect to
the Company under the Bankruptcy Code, which plan shall (i) be filed in the
United States Bankruptcy Court for the Southern District of New York in
accordance with applicable provisions of the Bankruptcy Code and (ii) provide
for the implementation of the Restructuring substantially on the terms and
conditions described in the Concurso Plan.

          (c) "Effective Date" means the first business day on which (a) all
conditions precedent to the effectiveness of the Chapter 11 Plan have been
satisfied or waived pursuant to the terms of the Chapter 11 Plan and (b) an
order by the Bankruptcy Court confirming the Chapter 11 Plan becomes a final and
non-appealable order.

          (d) "Solicitation Materials" means a disclosure statement for the
Chapter 11 Plan prepared in accordance with the requirements of section 1125 of
the Bankruptcy Code, ballots to vote for or against the Chapter 11 Plan and
other related materials that are distributed by the Company in accordance with
an order of the Bankruptcy Court authorizing, among other things, procedures for
the solicitation of votes on the Chapter 11 Plan.

          (e) "Transfer" means to, directly or indirectly (whether by one or
more transactions) (i) sell, pledge, assign, encumber, grant any option or any
right with respect to, transfer or otherwise dispose of any participation or
interest (whether a voting interest, an economic interest or otherwise) in or
(ii) enter into an agreement, commitment or other arrangement to sell, pledge,
assign, encumber, grant any option or any right with respect to, transfer or
otherwise dispose of any participation or interest (whether a voting interest,
an economic interest or otherwise) in, or the act thereof.

     2. Agreement to Complete Restructuring and Consummate Concurso Plan and
Chapter 11 Plan.

     From and after the date hereof and until the earlier of the (i) termination
of this Agreement in accordance with the terms specified herein and (ii) the
Effective Date:

          (a) The Additional Supporting Holder agrees to vote (or, in the case
of managed accounts, instruct the custodial agent to vote) all Existing Notes
held or owned (directly or indirectly) by the Additional Supporting Holder to
accept the Chapter 11 Plan promptly upon receipt of the Solicitation Materials
(but in all events before any deadlines for submitting such votes). The
Additional Supporting Holder may not revoke, withdraw or modify any ballot
tendered in connection with a vote to accept the Chapter 11 Plan; provided,
however, that if any term or condition of the Chapter 11 Plan is modified,
amended or waived in any material respect such that a Supporting Holder shall
have the right to revoke, withdraw or modify its vote to accept the Chapter 11
Plan under applicable law or otherwise, then the Additional Supporting

                                       2

<PAGE>

Holder shall have the right to revoke, withdraw, or modify its vote to accept
the Chapter 11 Plan prior to the Effective Date.

          (b) The Additional Supporting Holder agrees that (i) it will not,
directly or indirectly, execute, vote (or, in the case of managed accounts,
instruct the custodial agent to vote) for, consent to, provide any support for,
participate in the formulation of, or solicit or encourage others to formulate
any bankruptcy plan, convenio concursal, restructuring, reorganization,
liquidation or similar arrangement (in whatever jurisdiction proposed) for the
Company or of any of its affiliates other than the Restructuring, the Concurso
Plan, and the Chapter 11 Plan; (ii) it will not, directly or indirectly, object
to, or otherwise commence any proceeding to oppose, the Restructuring or the
Concurso Plan or Chapter 11 Plan and will not, directly or indirectly, take any
action in opposition to, or that would unreasonably delay the consummation of,
the Restructuring or the Concurso Plan or Chapter 11 Plan; (iii) it will support
the Restructuring and approval of the Concurso Plan and the Chapter 11 Plan;
(iv) if an FRN holder, it will not request (or support any other FRN holder or
other party requesting) or otherwise file any motion or commence any action or
proceeding, seeking adequate protection; (v) if an FRN holder, except as
otherwise required to effect the Restructuring, it will not, directly or
indirectly through the collateral trustee for the FRNs, take or cause to be
taken, by exercise of rights under the stock trusts securing the guarantees of
the FRNs, any shareholder action of the Company; and (vi) it will support the
restructuring of Servicios Corporativos Satelitales, S.A. de C.V. (the
"Servicios Restructuring") and, if an FRN holder, except as otherwise required
to effect the Servicios Restructuring, it will not, directly or indirectly
through the collateral trustee for the FRNs, take or cause to be taken, by
exercise of rights under the stock trusts securing the guarantees of the FRNs,
any shareholder action of Servicios; provided, however, that nothing in this
Agreement shall require the Additional Supporting Holder to indemnify the
indenture trustee for the FRNs or the HYBs or the collateral trustee for the
FRNs.

          (c) The Additional Supporting Holder shall (x) forbear (and agrees not
to give instructions to any applicable indenture trustee or agent or other
person that are inconsistent with the terms and conditions of this Agreement)
from the exercise of any rights, powers or remedies against the Company or any
affiliate it may have (including the right to call a default or seek payment or
any other relief in connection with any of the Existing Notes) under (a) the
Existing Notes, (b) any applicable documents governing any of the Existing
Notes, (c) any applicable law in connection with the Existing Notes and/or such
documents or (d) the Concurso Proceeding and (y) not challenge or cause to be
challenged the order entered by the Mexican Bankruptcy Court approving the
Concurso Plan; provided, however, that this section 2(c) shall not apply to
actions in furtherance of the Restructuring that are consistent with this
Agreement and the Concurso Plan or the Chapter 11 Plan. Additionally, the
Additional Supporting Holder will direct the indenture trustee for the FRNs and
the HYBs and any collateral trustee for the FRNs, each as reasonably necessary
and as applicable, to take actions in furtherance of the Restructuring, the
Concurso Plan, and the Chapter 11 Plan; provided, further, that no direction
shall be required if it involves indemnification by the Additional Supporting
Holder of any party.

     3. Transfer of Existing Notes; Acquisition of FRNs or HYBs.

          (a) The Additional Supporting Holder hereby agrees that it shall not
Transfer any of the Existing Notes unless the transferee executes the Instrument
of Accession attached

                                       3

<PAGE>

hereto as Exhibit B. The transferee must deliver to the Company a copy of such
executed Instrument of Accession within three (3) business days after the
effectiveness of any Transfer. Upon the delivery of such executed Instrument of
Accession, the Additional Supporting Holder shall have no further obligation or
liability hereunder with respect to the transferred Existing Notes (and, in the
case of a Transfer of all Existing Notes held by the Additional Supporting
Holder, shall have no further obligation or liability hereunder whatsoever)
other than for any default by the Additional Supporting Holder that occurred
prior to the effectiveness of the Transfer. If the Additional Supporting Holder
Transfers any Existing Notes without the transferee executing and delivering the
Instrument of Accession to the Company in accordance with this section 3(a), the
Transfer of such Existing Notes shall be deemed ineffective to transfer any
right to accept or reject the Chapter 11 Plan, which right shall remain with and
be exercised only by the Additional Supporting Holder.

          (b) In addition to the restrictions specified in Section 3(a), the
Additional Supporting Holder, except if is not domiciled in the United States of
America, hereby agrees that prior to delivery of its vote to accept the Chapter
11 Plan, it shall not, without the prior written consent of the Company (not to
be unreasonably withheld), Transfer any Existing Note that is an FRN to a
transferee unless the transferee is (x) a Person (as defined in the Bankruptcy
Code) domiciled in the United States of America or with a place of business in
the United States of America, (y) is a fund managed by a person domiciled in the
United States of America or with a place of business in the United States of
America or (z) already a holder of FRNs and is party to an agreement with the
Company to support the Restructuring.

          (c) The Additional Supporting Holder further agrees that any and all
FRNs or HYBs acquired by such Additional Supporting Holder following the date of
this Agreement shall be subject to the terms and conditions of this Agreement
and shall be deemed to be Existing Notes and subject to the same treatment as
the Existing Notes held by such Additional Supporting Holder as of the date
hereof. Notwithstanding anything contrary to the foregoing, if the Additional
Supporting Holder acquires or disposes of any FRNs or HYBs after the date
hereof, it shall promptly send a written notice to the Company and all other
parties identified in Section 10 hereof, specifying the type, amount and/or
number (as applicable) of FRNs or HYBs acquired or disposed of.

     4. Termination. This Agreement shall automatically terminate upon delivery
by the Conciliador to the Mexican Bankruptcy Court of the termination notice
referenced in Clause Seventh of the Concurso Plan. This Agreement may be
terminated, unless the Effective Date has occurred, as follows:

          (a) By the Additional Supporting Holder, if (i) an order confirming
the Chapter 11 Plan is not entered on the docket of the Bankruptcy Court on or
before January 31, 2007; (ii) the Effective Date has not occurred on or before
the date that is sixty (60) days thereafter; (iii) the Restructuring Agreement
dated as of March 31, 2006 between the Company, the Supporting Holders and
certain other parties (the "Restructuring Agreement") shall be terminated as to
all parties thereto; (iv) the Concurso Proceeding shall be converted to a
quiebra under article 167 of the MBRA; (v) if the Chapter 11 Case shall be
converted to a case under Chapter 7 of the Bankruptcy Code or a liquidating
chapter 11 case; or (vi) if there is a total loss of the Company's satellite
known as Satmex 6 Satellite prior to the Effective Date.

                                       4

<PAGE>

          (b) By the Company, if the Restructuring Agreement shall be terminated
as to all parties thereto.

     5. Representations by Additional Supporting Holder.

          (a) The Additional Supporting Holder represents and warrants to the
other signatories to this Agreement that:

          (i) if an entity, it is duly organized, validly existing and in good
     standing (to the extent applicable) under the laws of the jurisdiction of
     its organization and has all requisite corporate, partnership or other
     power and authority to enter into this Agreement and to carry out the
     transactions contemplated by, and perform its respective obligations under,
     this Agreement;

          (ii) the execution and delivery of this Agreement and the performance
     of its obligations hereunder have been duly authorized by all necessary
     corporate, partnership or other action on its part;

          (iii) the execution, delivery and performance by it of this Agreement
     does not (A) violate any provision of applicable law applicable to it or
     its certificate of incorporation or bylaws, or other organizational
     documents, or (B) conflict with, result in the breach of or constitute
     (with due notice or lapse of time or both) a default under any contractual
     obligations to which it is a party or under its certificate of
     incorporation, bylaws, or other governing instruments, in each case so that
     such violation, breach or conflict would materially adversely affect the
     ability of the Company to consummate the Chapter 11 Plan;

          (iv) this Agreement is a legally valid and binding obligation of it,
     enforceable against it in accordance with the terms hereof, except as
     enforceability may be limited by applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws, including the provisions of the
     MBRA affecting the enforcement of creditors' rights generally and by
     general equitable principles (whether enforcement is sought by proceedings
     in equity or at law);

          (v) as of the date of this Agreement, it is the beneficial owner of,
     or the investment adviser or manager for the beneficial owners of, or the
     indirect parent of the entity that holds, the Existing Notes, as specified
     on the signature page hereto, with full power and authority to vote and
     dispose of such securities;

          (vi) it has reviewed, with the assistance of professional and legal
     advisors of its choosing, all information necessary to decide to support
     the Restructuring as described herein on an informed basis;

          (vii) it is an "Accredited Investor" as defined in Rule 501 of
     Regulation D under the Securities Act; and

                                        5

<PAGE>

          (viii) it does not owe any fiduciary or similar duty to any other
     Person (as defined in the Bankruptcy Code) that would prevent it from
     taking any action required of it under this Agreement.

     6. No Solicitation. This Agreement is not intended to be, and each party to
this Agreement acknowledges that it is not, a solicitation of the acceptance or
rejection of any plan of reorganization for the Company pursuant to section 1125
of the Bankruptcy Code.

     7. Further Assurances. Each of the signatories to this Agreement hereby
further covenants and agrees to execute and deliver all further documents,
agreements and take all further action that in good faith may be reasonably
necessary or desirable in order to enforce and effectively implement the terms
and conditions of this Agreement.

     8. No Waiver. Each of the signatories to this Agreement expressly
acknowledges and agrees that, except as expressly provided in this Agreement,
nothing in this Agreement is intended to, or does, in any manner waive, limit,
impair or restrict the ability of any party to this Agreement to protect and
preserve all of its rights, remedies and interests, including without
limitation, with respect to its claims against and interests in the Company or
any of its assets.

     9. Complete Agreement. This Agreement, including the exhibits and signature
pages hereto, constitutes the complete agreement between the parties to this
Agreement with respect to the subject matter hereof and supersedes all prior and
contemporaneous negotiations, agreements and understandings with respect to the
subject matter hereof. The provisions of this Agreement shall be interpreted in
a reasonable manner to effect the intent of the parties to this Agreement. In
the event that any provision of this Agreement conflicts with any exhibits or
signature pages hereto, the provisions of this Agreement shall be controlling.
If the Additional Supporting Holder should at any time become a party to the
Restructuring Agreement, and if there is any conflict between this Agreement and
that Restructuring Agreement, the Restructuring Agreement shall govern.

     10. Notices. All notices, requests, demands, claims and other
communications hereunder shall be in writing and shall be (a) transmitted by
hand delivery, (b) mailed by first class, registered or certified mail, postage
prepaid, (c) transmitted by overnight courier or (d) transmitted by telecopy,
and in each case,

                                        6

<PAGE>

if to the Company:                    if to the Additional Supporting Holder:

Rodolfo Gaona #86                     ***
Col. Lomas de Sotelo
Mexico D.F. 11200 Mexico
Telephone: (52) (55) 2629-5808
Facsimile: (52) (55) 2629-5895
Attention: General Counsel

with a copy (which shall not          with a copy (which shall not constitute
constitute notice) to:                notice) to:

Milbank, Tweed, Hadley & McCloy LLP   Wilmer Cutler Pickering Hale and Dorr LLP
1 Chase Manhattan Plaza               60 State Street
New York, NY 10005                    Boston, MA 02109
Telephone: (212) 530-5000             Telephone: (617) 526-6000
Fax: (212) 530-5219                   Facsimile: (617) 526-5000
Attention: Luc A. Despins, Esq.       Attention: Dennis Jenkins, Esq.
           Matthew S. Barr, Esq.                 George W. Shuster, Jr., Esq.

                                      and

                                      Akin Gump Strauss Hauer & Feld LLP
                                      590 Madison Avenue
                                      New York, NY 10022
                                      Telephone: (212) 872-1000
                                      Facsimile: (212) 872-1002
                                      Attention: Michael S. Stamer, Esq.
                                                 Steven H. Scheinman. Esq.

Notices mailed or transmitted in accordance with the foregoing shall be deemed
to have been given upon receipt. Notices may be given by United States of
America counsel to the party hereto.

     11. Several Liability. The obligations of the parties to this Agreement
hereunder are ratable and several and not joint nor joint and several, and no
party to this Agreement shall be liable for any breach or nonperformance by any
other party to this Agreement.

     12. Governing Law. THIS AGREEMENT, THE RIGHTS AND OBLIGATIONS OF THE
PARTIES UNDER THIS AGREEMENT, AND ANY CLAIM OR CONTROVERSY DIRECTLY OR
INDIRECTLY BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT (WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER
THEORY), INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, SHALL
IN ALL RESPECTS BE GOVERNED BY AND INTERPRETED, CONSTRUED, AND DETERMINED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF

***  Confidential Treatment Requested by Satmex

                                        7

<PAGE>

NEW YORK (WITHOUT REGARD TO ANY CONFLICTS OF LAW PROVISION THAT WOULD REQUIRE
THE APPLICATION OF THE LAW OF ANY OTHER JURISDICTION).

     13. Headings. The headings of the sections, paragraphs and subsections of
this Agreement are inserted for convenience only and shall not affect the
interpretation hereof.

     14. Good Faith. Each of the signatories to this Agreement agrees to
cooperate in good faith with each other to facilitate the performance by the
parties of their respective obligations hereunder and the purposes of this
Agreement.

     15. Amendments and Modifications. This Agreement may be amended, modified,
or supplemented, and any term or condition of this Agreement may be waived, only
in writing signed by the Company and the Additional Supporting Holder.
Notwithstanding the foregoing, the Company may not agree to any amendment,
modification, supplement or waiver that has, or could reasonably be expected to
have, a material adverse effect on the Restructuring or the rights of the
Supporting FRN Holders or Supporting HYB Holders under the Restructuring
Agreement, unless such amendment, modification, supplement or waiver has been
consented to by a majority (in principal amount) of the Supporting FRN Holders
and a majority (in principal amount) of the Supporting HYB Holders.

     16. Jurisdiction. By its execution and delivery of this Agreement, each of
the signatories to this Agreement (i) irrevocably and unconditionally agrees
that so long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, any legal action, suit or proceeding against it with respect to
any matter under or arising out of or in connection with this Agreement or for
recognition or enforcement of any judgment rendered in any such action, suit or
proceeding, shall be brought exclusively in the Bankruptcy Court and (ii) so
long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, expressly waives any other forum that may correspond by virtue
of domicile, whether present or future, or otherwise. The foregoing shall not
preclude the jurisdiction of the Mexican Bankruptcy Court with respect to any
legal action, suit or proceeding against it with respect to any matter under or
arising out of or in connection with the Concurso Plan contemplated by this
Agreement, and the rights and obligations of the parties thereunder, including
all matters of construction, validity and performance thereunder.

     17. Specific Performance. It is understood and agreed by each of the
signatories to this Agreement that money damages may not be a sufficient remedy
for any breach of this Agreement by any party and each non-breaching party shall
be entitled to seek specific performance, injunctive, recessionary or other
equitable relief as a remedy for any such breach.

     18. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same agreement. Delivery of an executed counterpart of a
signature page by telecopier shall be effective as delivery of a manually
executed counterpart. Any Person may become party to this Agreement on or after
the date of this Agreement by executing a signature page to this Agreement
and/or, if applicable, in accordance with section 5(c), executing an Accession
Agreement. Upon the delivery of such executed signature pages and/or Accession
Agreement to

                                       8

<PAGE>

the Company, such Person shall be deemed to be a Supporting Holder as if it had
been an initial signatory hereto.

     19. Consideration. It is hereby acknowledged by each of the parties that no
consideration (other than the obligations of the other parties under this
Agreement) shall be due or paid to the parties for their agreement to support
the transactions contemplated herein.

     20. Successors and Assigns. This Agreement is intended to bind and inure to
the benefit of the parties to this Agreement and their respective successors,
permitted assigns, heirs, executors, administrators and representatives.

                                       9

<PAGE>
     IN WITNESS WHEREOF, each of the parties to this Agreement has caused this
Agreement to be executed and delivered by its duly authorized officers as of the
date first written above.

                                        SATELITES MEXICANOS, S.A. DE C.V.

                                        By: /s/ Cynthia Pelini Addario
                                            ------------------------------------
                                        Name: Cynthia Pelini Addario
                                        Title: EVP Finance & Administration

                                        By: Carmen Ochoa
                                            ------------------------------------
                                        Name: Carmen Ochoa
                                        Title: General Counsel

                                        ADDITIONAL SUPPORTING HOLDER

                                        ***

                                        By: ***
                                        As Investment Manager

                                        By: ***
                                        General Partner.

                                        By: ***
                                            ------------------------------------
                                        Name: ***
                                        Title: ***

                                        ***
                                        hereby represents that it is the
                                        beneficial owner and/or investment
                                        advisor or manager (with the power to
                                        vote and dispose of all or substantially
                                        all of the Existing Notes held on behalf
                                        of their beneficial owner) of
                                        discretionary accounts for holders of
                                        beneficial owners of, the aggregate
                                        principal amount of the Existing Notes
                                        listed below.

                                        Principal Amount of FRNs: ***

                                        Principal Amount of HYBs: N/A

***  Confidential Treatment Requested by Satmex

                                        10

<PAGE>

                                    EXHIBIT A

                                  CONCURSO PLAN

                                     OMITTED

                                      A-1

<PAGE>

                                    EXHIBIT B

                             INSTRUMENT OF ACCESSION

     The undersigned ______________ (the "Transferee"), as a condition precedent
to becoming the beneficial holder and/or owner of [INSERT FACE AMOUNT OF FRNS]
of [Senior Secured Floating Rate Notes due June 30, 2004 ("FRNs")] [and/or
[INSERT FACE AMOUNT OF HYBS] of 10-1/8% Senior Notes due 2004 ("HYBs")] (the
"Existing Notes") issued by SATELITES MEXICANOS, S.A. DE C.V. (the "Company"),
(a) hereby agrees to become a party to and bound by the terms and conditions of
that certain Support Agreement by and between the Company and [______] (the
"Additional Supporting Holder"), dated as of May ______, 2006 (as amended or
modified, the "Support Agreement") and assume all of the Additional Supporting
Holder's(1) obligations thereunder, (b) hereby agrees that the Existing Notes,
together with any FRNs and/or HYBs previously owned or hereafter acquired by the
Transferee, shall be subject to and bound by the Support Agreement, and (c)
represents and warrants that it has reviewed, with the assistance of
professional and legal advisors of its choosing, all information necessary for
such Transferee to decide to support the Restructuring through the Chapter 11
Plan as described in the Support Agreement and Concurso Plan. This Instrument of
Accession shall take effect and shall become an integral part of the Support
Agreement immediately upon execution and delivery to the Company of this
Instrument and the Transferee shall be deemed to be a party to the Support
Agreement (and bound by all of its rights and obligations) as if it had been an
initial signatory thereto.

     IN WITNESS WHEREOF, this INSTRUMENT OF ACCESSION has been duly executed by
or on behalf of the undersigned as of ___________, 2006.

                                        [Entity Name]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        Contact Information:

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

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

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

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

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

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

----------
(1)  Capitalized terms not defined herein shall have the meaning ascribed to
     such term in the Support Agreement.

                                       B-1

<PAGE>

ACKNOWLEDGED:

SATELITES MEXICANOS, S.A. DE C.V.

By:
    ---------------------------------
Name:
      -------------------------------
Title:
       ------------------------------

                                       B-2
<PAGE>

                                SUPPORT AGREEMENT

     This Support Agreement (together with the exhibits and signature pages
hereto, the "Agreement"), dated as of May 18, 2006, is entered into by and among
Satelites Mexicanos, S.A. de C.V. (the "Company") and the undersigned beneficial
owner (or investment manager or advisor with power to vote or dispose of all or
substantially all of the relevant securities on behalf of the beneficial owner)
(the "Additional Supporting Holder") of the Company's Senior Secured Floating
Rate Notes due June 30, 2004 (the "FRNs") and/or the Company's 10-1/8% Senior
Notes due November 1, 2004 (the "HYBs") identified on the signature page hereto
(the "Existing Notes").

                                    RECITALS

     WHEREAS, on June 29, 2005, the Company initiated a proceeding under the Ley
de Concursos Mercantiles (as amended from time to time, the "MBRA"), which
proceeding is currently pending before the Second Federal District Court for
Civil Matters in Mexico City, Mexico under file number 129/2005 (the "Concurso
Proceeding");

     WHEREAS, subject to certain conditions, the Company; certain beneficial
holders of FRNs (the "Supporting FRN Holders"); certain beneficial holders of
HYBs (the "Supporting HYB Holders", and, together with the Supporting FRN
Holders, the "Supporting Holders"); and certain equity holders of the Company
are parties to that certain Restructuring Agreement (defined below) pursuant to
which they have agreed to support the restructuring of the debt and equity of
the Company on substantially the terms and conditions described in the Concurso
Agreement attached hereto as Exhibit A (the "Concurso Plan") through the (i)
approval of the Concurso Plan and termination of the Concurso Proceeding
pursuant to the MBRA and (ii) the consummation of the Chapter 11 Plan (defined
below) (the "Restructuring");

     WHEREAS, the agreement of the Company and the Supporting HYB Holders to
execute and deliver the Concurso Plan in accordance with the Restructuring
Agreement is contingent upon, inter alia, the Additional Supporting Holder
agreeing, pursuant to the terms hereof, to support the Restructuring;

     WHEREAS, as specified further herein, to consummate the implementation of
the Restructuring, the Additional Supporting Holder is prepared to commit, on
the terms and subject to the conditions of this Agreement and applicable
bankruptcy law, to, if and when solicited to do so, vote (or, in the case of
managed accounts, instruct its custodial agents to vote) to accept the Chapter
11 Plan, to support confirmation of the Chapter 11 Plan, and to perform its
other obligations hereunder, if any.

     NOW, THEREFORE, in consideration of the promises and the mutual covenants
and agreements set forth in this Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
each of the parties signatory to this Agreement, intending to be bound hereby,
agrees as follows:

<PAGE>

     1. Definitions. Capitalized terms not otherwise defined above or in this
Section 1 shall have the meaning ascribed to them in the Concurso Plan. As used
in this Agreement, the following terms shall have the following meanings:

          (a) "Bankruptcy Code" means title 11 of the United States Code, 11
U.S.C. Sections 101-1532 (as may be amended).

          (b) "Chapter 11 Plan" means a plan of reorganization with respect to
the Company under the Bankruptcy Code, which plan shall (i) be filed in the
United States Bankruptcy Court for the Southern District of New York in
accordance with applicable provisions of the Bankruptcy Code and (ii) provide
for the implementation of the Restructuring substantially on the terms and
conditions described in the Concurso Plan.

          (c) "Effective Date" means the first business day on which (a) all
conditions precedent to the effectiveness of the Chapter 11 Plan have been
satisfied or waived pursuant to the terms of the Chapter 11 Plan and (b) an
order by the Bankruptcy Court confirming the Chapter 11 Plan becomes a final and
non-appealable order.

          (d) "Solicitation Materials" means a disclosure statement for the
Chapter 11 Plan prepared in accordance with the requirements of section 1125 of
the Bankruptcy Code, ballots to vote for or against the Chapter 11 Plan and
other related materials that are distributed by the Company in accordance with
an order of the Bankruptcy Court authorizing, among other things, procedures for
the solicitation of votes on the Chapter 11 Plan.

          (e) "Transfer" means to, directly or indirectly (whether by one or
more transactions) (i) sell, pledge, assign, encumber, grant any option or any
right with respect to, transfer or otherwise dispose of any participation or
interest (whether a voting interest, an economic interest or otherwise) in or
(ii) enter into an agreement, commitment or other arrangement to sell, pledge,
assign, encumber, grant any option or any right with respect to, transfer or
otherwise dispose of any participation or interest (whether a voting interest,
an economic interest or otherwise) in, or the act thereof.

     2. Agreement to Complete Restructuring and Consummate Concurso Plan and
Chapter 11 Plan.

     From and after the date hereof and until the earlier of the (i) termination
of this Agreement in accordance with the terms specified herein and (ii)
Effective Date:

          (a) The Additional Supporting Holder agrees to vote (or, in the case
of managed accounts, instruct the custodial agent to vote) all Existing Notes
held or owned (directly or indirectly) by the Additional Supporting Holder to
accept the Chapter 11 Plan promptly upon receipt of the Solicitation Materials
(but in all events before any deadlines for submitting such votes). The
Additional Supporting Holder may not revoke, withdraw or modify any ballot
tendered in connection with a vote to accept the Chapter 11 Plan; provided,
however, that if any term or condition of the Chapter 11 Plan is modified,
amended or waived in any material respect such that a Supporting Holder shall
have the right to revoke, withdraw or modify its vote to accept the Chapter 11
Plan under applicable law or otherwise, then the Additional Supporting

                                        2

<PAGE>

Holder shall have the right to revoke, withdraw, or modify its vote to accept
the Chapter 11 Plan prior to the Effective Date.

          (b) The Additional Supporting Holder agrees that (i) it will not,
directly or indirectly, execute, vote (or, in the case of managed accounts,
instruct the custodial agent to vote) for, consent to, provide any support for,
participate in the formulation of, or solicit or encourage others to formulate
any bankruptcy plan, convenio concursal, restructuring, reorganization,
liquidation or similar arrangement (in whatever jurisdiction proposed) for the
Company or of any of its affiliates other than the Restructuring, the Concurso
Plan, and the Chapter 11 Plan; (ii) it will not, directly or indirectly, object
to, or otherwise commence any proceeding to oppose, the Restructuring or the
Concurso Plan or Chapter 11 Plan and will not, directly or indirectly, take any
action in opposition to, or that would unreasonably delay the consummation of,
the Restructuring or the Concurso Plan or Chapter 11 Plan; (iii) it will support
the Restructuring and approval of the Concurso Plan and the Chapter 11 Plan;
(iv) if an FRN holder, it will not request (or support any other FRN holder or
other party requesting) or otherwise file any motion or commence any action or
proceeding, seeking adequate protection; (v) if an FRN holder, except as
otherwise required to effect the Restructuring, it will not, directly or
indirectly through the collateral trustee for the FRNs, take or cause to be
taken, by exercise of rights under the stock trusts securing the guarantees of
the FRNs, any shareholder action of the Company; and (vi) it will support the
restructuring of Servicios Corporativos Satelitales, S.A. de C.V. (the
"Servicios Restructuring") and, if an FRN holder, except as otherwise required
to effect the Servicios Restructuring, it will not, directly or indirectly
through the collateral trustee for the FRNs, take or cause to be taken, by
exercise of rights under the stock trusts securing the guarantees of the FRNs,
any shareholder action of Servicios; provided, however, that nothing in this
Agreement shall require the Additional Supporting Holder to indemnify the
indenture trustee for the FRNs or the HYBs or the collateral trustee for the
FRNs.

          (c) The Additional Supporting Holder shall (x) forbear (and agrees not
to give instructions to any applicable indenture trustee or agent or other
person that are inconsistent with the terms and conditions of this Agreement)
from the exercise of any rights, powers or remedies against the Company or any
affiliate it may have (including the right to call a default or seek payment or
any other relief in connection with any of the Existing Notes) under (a) the
Existing Notes, (b) any applicable documents governing any of the Existing
Notes, (c) any applicable law in connection with the Existing Notes and/or such
documents or (d) the Concurso Proceeding and (y) not challenge or cause to be
challenged the order entered by the Mexican Bankruptcy Court approving the
Concurso Plan; provided, however, that this section 2(c) shall not apply to
actions in furtherance of the Restructuring that are consistent with this
Agreement and the Concurso Plan or the Chapter 11 Plan. Additionally, the
Additional Supporting Holder will direct the indenture trustee for the FRNs and
the HYBs and any collateral trustee for the FRNs, each as reasonably necessary
and as applicable, to take actions in furtherance of the Restructuring, the
Concurso Plan, and the Chapter 11 Plan; provided, further, that no direction
shall be required if it involves indemnification by the Additional Supporting
Holder of any party.

     3. Transfer of Existing Notes; Acquisition of FRNs or HYBs.

          (a) The Additional Supporting Holder hereby agrees that it shall not
Transfer any of the Existing Notes unless the transferee executes the Instrument
of Accession attached

                                       3

<PAGE>

hereto as Exhibit B. The transferee must deliver to the Company a copy of such
executed Instrument of Accession within three (3) business days after the
effectiveness of any Transfer. Upon the delivery of such executed Instrument of
Accession, the Additional Supporting Holder shall have no further obligation or
liability hereunder with respect to the transferred Existing Notes (and, in the
case of a Transfer of all Existing Notes held by the Additional Supporting
Holder, shall have no further obligation or liability hereunder whatsoever)
other than for any default by the Additional Supporting Holder that occurred
prior to the effectiveness of the Transfer. If the Additional Supporting Holder
Transfers any Existing Notes without the transferee executing and delivering the
Instrument of Accession to the Company in accordance with this section 3(a), the
Transfer of such Existing Notes shall be deemed ineffective to transfer any
right to accept or reject the Chapter 11 Plan, which right shall remain with and
be exercised only by the Additional Supporting Holder.

          (b) In addition to the restrictions specified in Section 3(a), the
Additional Supporting Holder, except if is not domiciled in the United States of
America, hereby agrees that prior to delivery of its vote to accept the Chapter
11 Plan, it shall not, without the prior written consent of the Company (not to
be unreasonably withheld), Transfer any Existing Note that is an FRN to a
transferee unless the transferee is (x) a Person (as defined in the Bankruptcy
Code) domiciled in the United States of America or with a place of business in
the United States of America, (y) is a fund managed by a person domiciled in the
United States of America or with a place of business in the United States of
America or (z) already a holder of FRNs and is party to an agreement with the
Company to support the Restructuring.

          (c) The Additional Supporting Holder further agrees that any and all
FRNs or HYBs acquired by such Additional Supporting Holder following the date of
this Agreement shall be subject to the terms and conditions of this Agreement
and shall be deemed to be Existing Notes and subject to the same treatment as
the Existing Notes held by such Additional Supporting Holder as of the date
hereof. Notwithstanding anything contrary to the foregoing, if the Additional
Supporting Holder acquires or disposes of any FRNs or HYBs after the date
hereof, it shall promptly send a written notice to the Company and all other
parties identified in Section 10 hereof, specifying the type, amount and/or
number (as applicable) of FRNs or HYBs acquired or disposed of Notwithstanding
the foregoing or anything in this Agreement to the contrary, no participation or
other interest of the Additional Supporting Holder in FRNs held by or acquired
from a Supporting FRN Holder in accordance with the terms and restrictions of
the Restructuring Agreement (defined below) shall be subject to this Agreement.

     4. Termination. This Agreement shall automatically terminate upon delivery
by the Conciliador to the Mexican Bankruptcy Court of the termination notice
referenced in Clause Seventh of the Concurso Plan. This Agreement may be
terminated, unless the Effective Date has occurred, as follows:

          (a) By the Additional Supporting Holder, if (i) an order confirming
the Chapter 11 Plan is not entered on the docket of the Bankruptcy Court on or
before January 31, 2007; (ii) the Effective Date has not occurred on or before
the date that is sixty (60) days thereafter; (iii) the Restructuring Agreement
dated as of March 31, 2006 between the Company, the Supporting Holders and
certain other parties (the "Restructuring Agreement") shall be terminated as to
all parties thereto; (iv) the Concurso Proceeding shall be converted to a
quiebra

                                       4

<PAGE>

under article 167 of the MBRA; (v) if the Chapter 11 Case shall be converted to
a case under Chapter 7 of the Bankruptcy Code or a liquidating chapter 11 case;
or (vi) if there is a total loss of the Company's satellite known as Satmex 6
Satellite prior to the Effective Date.

          (b) By the Company, if the Restructuring Agreement shall be terminated
as to all parties thereto.

     5. Representations by Additional Supporting Holder.

          (a) The Additional Supporting Holder represents and warrants to the
other signatories to this Agreement that:

          (i) if an entity, it is duly organized, validly existing and in good
     standing (to the extent applicable) under the laws of the jurisdiction of
     its organization and has all requisite corporate, partnership or other
     power and authority to enter into this Agreement and to carry out the
     transactions contemplated by, and perform its respective obligations under,
     this Agreement;

          (ii) the execution and delivery of this Agreement and the performance
     of its obligations hereunder have been duly authorized by all necessary
     corporate, partnership or other action on its part;

          (iii) the execution, delivery and performance by it of this Agreement
     does not (A) violate any provision of applicable law applicable to it or
     its certificate of incorporation or bylaws, or other organizational
     documents, or (B) conflict with, result in the breach of or constitute
     (with due notice or lapse of time or both) a default under any contractual
     obligations to which it is a party or under its certificate of
     incorporation, bylaws, or other governing instruments, in each case so that
     such violation, breach or conflict would materially adversely affect the
     ability of the Company to consummate the Chapter 11 Plan;

          (iv) this Agreement is a legally valid and binding obligation of it,
     enforceable against it in accordance with the terms hereof, except as
     enforceability may be limited by applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws, including the provisions of the
     MBRA affecting the enforcement of creditors' rights generally and by
     general equitable principles (whether enforcement is sought by proceedings
     in equity or at law);

          (v) as of the date of this Agreement, it is the beneficial owner of,
     or the investment adviser or manager for the beneficial owners of, or the
     indirect parent of the entity that holds, the Existing Notes, as specified
     on the signature page hereto, with full power and authority to vote and
     dispose of such securities;

          (vi) it has reviewed, with the assistance of professional and legal
     advisors of its choosing, all information necessary to decide to support
     the Restructuring as described herein on an informed basis;

                                       5

<PAGE>

          (vii) it is an "Accredited Investor" as defined in Rule 501 of
     Regulation D under the Securities Act; and

          (viii) it does not owe any fiduciary or similar duty to any other
     Person (as defined in the Bankruptcy Code) that would prevent it from
     taking any action required of it under this Agreement.

     6. No Solicitation. This Agreement is not intended to be, and each party to
this Agreement acknowledges that it is not, a solicitation of the acceptance or
rejection of any plan of reorganization for the Company pursuant to section 1125
of the Bankruptcy Code.

     7. Further Assurances. Each of the signatories to this Agreement hereby
further covenants and agrees to execute and deliver all further documents,
agreements and take all further action that in good faith may be reasonably
necessary or desirable in order to enforce and effectively implement the terms
and conditions of this Agreement.

     8. No Waiver. Each of the signatories to this Agreement expressly
acknowledges and agrees that, except as expressly provided in this Agreement,
nothing in this Agreement is intended to, or does, in any manner waive, limit,
impair or restrict the ability of any party to this Agreement to protect and
preserve all of its rights, remedies and interests, including without
limitation, with respect to its claims against and interests in the Company or
any of its assets.

     9. Complete Agreement. This Agreement, including the exhibits and signature
pages hereto, constitutes the complete agreement between the parties to this
Agreement with respect to the subject matter hereof and supersedes all prior and
contemporaneous negotiations, agreements and understandings with respect to the
subject matter hereof. The provisions of this Agreement shall be interpreted in
a reasonable manner to effect the intent of the parties to this Agreement. In
the event that any provision of this Agreement conflicts with any exhibits or
signature pages hereto, the provisions of this Agreement shall be controlling.
If the Additional Supporting Holder should at any time become a party to the
Restructuring Agreement, and if there is any conflict between this Agreement and
that Restructuring Agreement, the Restructuring Agreement shall govern.

     10. Notices. All notices, requests, demands, claims and other
communications hereunder shall be in writing and shall be (a) transmitted by
hand delivery, (b) mailed by first class, registered or certified mail, postage
prepaid, (c) transmitted by overnight courier or (d) transmitted by telecopy,
and in each case,

                                       6

<PAGE>

<TABLE>
<S>                                       <C>
if to the Company:                        if to the Additional Supporting Holder:

Rodolfo Gaona  #86                        ***
Col. Lomas de Sotelo
Mexico D.F. 11200 Mexico
Telephone: (52) (55) 2629-5808
Facsimile: (52) (55) 2629-5895
Attention:  General Counsel

with a copy (which shall not constitute   with a copy (which shall not constitute
notice) to:                               notice) to:

Milbank, Tweed, Hadley & McCloy LLP       Wilmer Cutler Pickering Hale and Dorr LLP
1 Chase Manhattan Plaza                   60 State Street
New York, NY 10005                        Boston, MA 02109
Telephone: (212) 530-5000                 Telephone: (617) 526-6000
Fax: (212) 530-5219                       Facsimile: (617) 526-5000
Attention: Luc A. Despins, Esq.           Attention: Dennis Jenkins, Esq.
           Matthew S. Barr, Esq.                     George W. Shuster, Jr., Esq.

                                          and

                                          Akin Gump Strauss Hauer & Feld LLP
                                          590 Madison Avenue
                                          New York, NY 10022
                                          Telephone: (212) 872-1000
                                          Facsimile: (212) 872-1002
                                          Attention: Michael S. Stamer, Esq.
                                                     Steven H. Scheinman, Esq.
</TABLE>

Notices mailed or transmitted in accordance with the foregoing shall be deemed
to have been given upon receipt. Notices may be given by United States of
America counsel to the party hereto.

     11. Several Liability. The obligations of the parties to this Agreement
hereunder are ratable and several and not joint nor joint and several, and no
party to this Agreement shall be liable for any breach or nonperformance by any
other party to this Agreement.

     12. Governing Law. THIS AGREEMENT, THE RIGHTS AND OBLIGATIONS OF THE
PARTIES UNDER THIS AGREEMENT, AND ANY CLAIM OR CONTROVERSY DIRECTLY OR
INDIRECTLY BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT (WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER
THEORY), INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, SHALL
IN ALL RESPECTS BE GOVERNED BY AND INTERPRETED, CONSTRUED, AND

*** Confidential treatment requested by Satmex.

                                        7

<PAGE>

DETERMINED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK
(WITHOUT REGARD TO ANY CONFLICTS OF LAW PROVISION THAT WOULD REQUIRE THE
APPLICATION OF THE LAW OF ANY OTHER JURISDICTION).

     13. Headings. The headings of the sections, paragraphs and subsections of
this Agreement are inserted for convenience only and shall not affect the
interpretation hereof.

     14. Good Faith. Each of the signatories to this Agreement agrees to
cooperate in good faith with each other to facilitate the performance by the
parties of their respective obligations hereunder and the purposes of this
Agreement.

     15. Amendments and Modifications. This Agreement may be amended, modified,
or supplemented, and any term or condition of this Agreement may be waived, only
in writing signed by the Company and the Additional Supporting Holder.
Notwithstanding the foregoing, the Company may not agree to any amendment,
modification, supplement or waiver that has, or could reasonably be expected to
have, a material adverse effect on the Restructuring or the rights of the
Supporting FRN Holders or Supporting HYB Holders under the Restructuring
Agreement, unless such amendment, modification, supplement or waiver has been
consented to by a majority (in principal amount) of the Supporting FRN Holders
and a majority (in principal amount) of the Supporting HYB Holders.

     16. Jurisdiction. By its execution and delivery of this Agreement, each of
the signatories to this Agreement (i) irrevocably and unconditionally agrees
that so long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, any legal action, suit or proceeding against it with respect to
any matter under or arising out of or in connection with this Agreement or for
recognition or enforcement of any judgment rendered in any such action, suit or
proceeding, shall be brought exclusively in the Bankruptcy Court and (ii) so
long as the Company has commenced a proceeding under Chapter 11 of the
Bankruptcy Code, expressly waives any other forum that may correspond by virtue
of domicile, whether present or future, or otherwise. The foregoing shall not
preclude the jurisdiction of the Mexican Bankruptcy Court with respect to any
legal action, suit or proceeding against it with respect to any matter under or
arising out of or in connection with the Concurso Plan contemplated by this
Agreement, and the rights and obligations of the parties thereunder, including
all matters of construction, validity and performance thereunder.

     17. Specific Performance. It is understood and agreed by each of the
signatories to this Agreement that money damages may not be a sufficient remedy
for any breach of this Agreement by any party and each non-breaching party shall
be entitled to seek specific performance, injunctive, recessionary or other
equitable relief as a remedy for any such breach.

     18. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same agreement. Delivery of an executed counterpart of a
signature page by telecopier shall be effective as delivery of a manually
executed counterpart. Any Person may become party to this Agreement on or after
the date of this Agreement by executing a signature page to this Agreement
and/or, if applicable, in accordance with section 5(c), executing an Accession
Agreement. Upon the delivery of such executed signature pages and/or Accession
Agreement to

                                       8

<PAGE>

the Company, such Person shall be deemed to be a Supporting Holder as if it had
been an initial signatory hereto.

     19. Consideration. It is hereby acknowledged by each of the parties that no
consideration (other than the obligations of the other parties under this
Agreement) shall be due or paid to the parties for their agreement to support
the transactions contemplated herein.

     20. Successors and Assigns. This Agreement is intended to bind and inure to
the benefit of the parties to this Agreement and their respective successors,
permitted assigns, heirs, executors, administrators and representatives.

                                       9

<PAGE>

     IN WITNESS WHEREOF, each of the parties to this Agreement has caused this
Agreement to be executed and delivered by its duly authorized officers as of the
date first written above.

                                        SATELITES MEXICANOS, S.A. DE C.V.

                                        By: /s/ Cynthia Pelini Addario
                                            ------------------------------------
                                        Name: Cynthia Pelini Addario
                                        Title: EVP Finance & Administration

                                        By: /s/ Carmen Ochoa
                                            ------------------------------------
                                        Name: Carmen Ochoa
                                        Title: General Counsel

                                       10

<PAGE>

                                        ADDITIONAL SUPPORTING HOLDER

                                        ***

                                        By: ***
                                        its: Investment Advisor

                                        By: ***
                                            ------------------------------------
                                        Name:  ***
                                        Title: ***
                                               ***

                                        *** hereby represents that it is
                                        the beneficial owner and/or investment
                                        advisor or manager (with the
                                        power to vote and dispose of all or
                                        substantially all of the Existing Notes
                                        held on behalf of their beneficial
                                        owner) of discretionary accounts for
                                        holders of beneficial owners of, the
                                        aggregate principal amount of the
                                        Existing Notes listed below.

                                        Principal Amount of FRNs: ***

                                        Principal Amount of HYBs: N/A

***  Confidential Treatment Requested by Satmex

                                       11

<PAGE>

                                    EXHIBIT A

                                  CONCURSO PLAN

                                     OMITTED

                                       A-1

<PAGE>

                                    EXHIBIT B

                             INSTRUMENT OF ACCESSION

     The undersigned _____________ (the "Transferee"), as a condition precedent
to becoming the beneficial holder and/or owner of [INSERT FACE AMOUNT OF FRNS]
of [Senior Secured Floating Rate Notes due June 30, 2004 ("FRNs")] [and/or
[INSERT FACE AMOUNT OF HYBS] of 10-1/8% Senior Notes due 2004 ("HYBs")] (the
"Existing Notes") issued by SATELITES MEXICANOS, S.A. DE C.V. (the "Company"),
(a) hereby agrees to become a party to and bound by the terms and conditions of
that certain Support Agreement by and between the Company and [_____________]
(the "Additional Supporting Holder"), dated as of May ___, 2006 (as amended or
modified, the "Support Agreement") and assume all of the Additional Supporting
Holder's(1) obligations thereunder, (b) hereby agrees that the Existing Notes,
together with any FRNs and/or HYBs previously owned or hereafter acquired by the
Transferee, shall be subject to and bound by the Support Agreement, and (c)
represents and warrants that it has reviewed, with the assistance of
professional and legal advisors of its choosing, all information necessary for
such Transferee to decide to support the Restructuring through the Chapter 11
Plan as described in the Support Agreement and Concurso Plan. This Instrument of
Accession shall take effect and shall become an integral part of the Support
Agreement immediately upon execution and delivery to the Company of this
Instrument and the Transferee shall be deemed to be a party to the Support
Agreement (and bound by all of its rights and obligations) as if it had been an
initial signatory thereto.

     IN WITNESS WHEREOF, this INSTRUMENT OF ACCESSION has been duly executed by
or on behalf of the undersigned as of _______, 2006.

                                        [Entity Name]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        Contact Information:

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

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

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

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

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

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

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

----------
(1)  Capitalized terms not defined herein shall have the meaning ascribed to
     such term in the Support Agreement.

                                       B-1

<PAGE>

ACKNOWLEDGED:

SATELITES MEXICANOS, S.A. DE C.V.

By:
    ---------------------------------
Name:
      -------------------------------
Title:
       ------------------------------

                                       B-2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00106-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00106-of-00352.parquet"}]]