Document:

<PAGE>
                                                                   EXHIBIT 10.33

                               MODIFICATION NO. 8

                            TO THE SATELLITE CONTRACT

                  (ECHOSTAR VII - 119 (DEGREE) WEST LONGITUDE)

                                     BETWEEN

                           LOCKHEED MARTIN CORPORATION

                                       AND

                          ECHOSTAR ORBITAL CORPORATION

                             DATED JANUARY 27, 2000

This Modification is effective the 12th day of October 2001.

WITNESS THAT:

WHEREAS, EchoStar Orbital Corporation ("Buyer") and Lockheed Martin Corporation

("Contractor"), mutually agree to modify the subject Contract to:

o        Modify EXHIBIT B THE ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION
         DOC#8575921 REV. D. This modification incorporates mutually agreed upon
         changes as identified in the attached Change Control Board (CCB) Item
         No. 367, dated June 26, 2001.

NOW THEREFORE, in consideration of the mutual covenants and conditions contained
herein, Buyer and Contractor agree to modify the Contract as follows:

1.       EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION DOC#8575921

         a.       Delete EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE
                  SPECIFICATION DOC#8575921 REV. D in its entirety and replace
                  with EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE
                  SPECIFICATION DOC#8575921 REV. E.

<PAGE>

IN WITNESS WHEREOF, the parties hereto have executed this Contract Amendment.

ECHOSTAR ORBITAL                                  LOCKHEED MARTIN
CORPORATION                                       CORPORATION

By:                                               By:
    --------------------------------                  --------------------------
         David K. Moskowitz                           Sandra McMahan
         Senior Vice President and                    Contracts Manager
         General Counsel

EchoStar Communications Corporation hereby guarantees all of the obligations and
duties of EchoStar Orbital Corporation under the Contract to which this
guarantee is attached.

ECHOSTAR COMMUNICATIONS
CORPORATION

By:
      -------------------------------
      David K. Moskowitz
      Senior Vice President and
      General Counsel<PAGE>
                                                                   EXHIBIT 10.34

                               MODIFICATION NO. 9

                            TO THE SATELLITE CONTRACT

                  (ECHOSTAR VII - 119 (DEGREE) WEST LONGITUDE)

                                     BETWEEN

                           LOCKHEED MARTIN CORPORATION

                                       AND

                          ECHOSTAR ORBITAL CORPORATION

                             DATED JANUARY 27, 2000

This Modification is effective the 16th day of October 2001.

WITNESS THAT:

WHEREAS, EchoStar Orbital Corporation ("Buyer") and Lockheed Martin Corporation

("Contractor"), mutually agree to modify the subject Contract to:

o        Modify EXHIBIT B THE ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION
         DOC#8575921 REV. E. This modification incorporates mutually agreed upon
         changes as identified in the attached Change Control Board (CCB) Item
         No. 378, dated October 16, 2001.

NOW THEREFORE, in consideration of the mutual covenants and conditions contained
herein, Buyer and Contractor agree to modify the Contract as follows:

1.       EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION DOC#8575921

         a.       Delete EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE
                  SPECIFICATION DOC#8575921 REV. E in its entirety and replace
                  with EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE
                  SPECIFICATION DOC#8575921 REV. F.

<PAGE>

IN WITNESS WHEREOF, the parties hereto have executed this Contract Amendment.

ECHOSTAR ORBITAL                                LOCKHEED MARTIN
CORPORATION                                     CORPORATION

By:                                             By:
    ----------------------------                    ----------------------------
    David K. Moskowitz                              Sandra McMahan
    Senior Vice President and                       Contracts Manager
    General Counsel

EchoStar Communications Corporation hereby guarantees all of the obligations and
duties of EchoStar Orbital Corporation under the Contract to which this
guarantee is attached.

ECHOSTAR COMMUNICATIONS
CORPORATION

By:
    --------------------------
    David K. Moskowitz
    Senior Vice President and
    General Counsel<PAGE>

                                                                   EXHIBIT 10.35

                            CONTRACT AMENDMENT NO. 1

                                       TO

                           THE ECHOSTAR VIII CONTRACT

                              CONTRACT NO. TP99022

                                     BETWEEN

                          ECHOSTAR ORBITAL CORPORATION

                                       AND

                            SPACE SYSTEMS/LORAL, INC.

THIS CONTRACT AMENDMENT NO. 1 (the "Amendment") is entered into effective as of
the 19th day of October 2001, between ECHOSTAR ORBITAL CORPORATION (the
"Purchaser") and SPACE SYSTEMS/LORAL, INC. (the "Contractor").

WHEREAS, Contractor and Purchaser are parties to Contract No. TP99022 (the
"Contract") entered into as of February 4, 2000 and amended and restated as of
February 1, 2001,

WHEREAS, Contractor and Purchaser desire to amend the Contract to recognize
Purchaser's exercise of an option TO[CONFIDENTIAL INFORMATION OMITTED],

WHEREAS, Contractor and Purchaser desire to amend Attachment A to the Contract;

NOW, THEREFORE, in consideration of the mutual covenants and conditions in this
Amendment and in the Contract and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

A:       Description of Changes:

1.       The Table of Contents is changed as follows:

<Table>
<S>                                                                          <C>
FROM:

"ARTICLE 4 - PRICE...........................................................11"

TO:

"ARTICLE 4 - PRICE (AMENDMENT 1).............................................11"
</Table>

                       AMENDMENT 1: DATED 19 OCTOBER 2001

                                                    CONFIDENTIAL AND PROPRIETARY

<PAGE>

2.       Article 4 - Price

FROM: "4.1     [CONFIDENTIAL INFORMATION OMITTED]

TO:   "4.1     [CONFIDENTIAL INFORMATION OMITTED]

3.       Change Article 42 - Attachments to reflect update of Payment Plan as
         follows:

FROM: "ATTACHMENT A: Payment Plan"

TO: "ATTACHMENT A: Payment Plan (Amendment 1)"

REMOVE: Current Milestone Payment Plan

REPLACE WITH: Revised Milestone Payment Plan

B.       CHANGE PAGES

Remove the pages of the Amended and Restated Contract and Replace with those of
this Amendment 1 as identified in Appendix 1:

Defined Terms: All capitalized terms in this Amendment, not otherwise defined
herein, shall have the same meaning as ascribed to them in the Contract.

Ratification and Affirmation: The Contract, as modified by the express terms of
this Amendment, is hereby ratified and affirmed by Purchaser and Contractor, and
shall remain in full force and effect.

Counterparts: This Amendment may be executed in one or more counterparts, all of
which taken together shall constitute the Amendment.

IN WITNESS WHEREOF, the parties have executed this Amendment effective as of the
date first written above:

CONTRACTOR:                               PURCHASER:

SPACE SYSTEMS/LORAL, INC.                 ECHOSTAR ORBITAL CORPORATION

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

Name:                                     Name:
      ---------------------------               ----------------------------

Title:                                    Title:
       --------------------------                  -------------------------

                       AMENDMENT 1: DATED 19 OCTOBER 2001

                                                    CONFIDENTIAL AND PROPRIETARY

<PAGE>

APPENDIX 1

Remove the pages in the Amended and Restated Contract and substitute them with
the replacement pages of Amendment 1:

FROM AMENDED AND RESTATED CONTRACT                   FROM AMENDMENT 1
REMOVE                                               REPLACE

Page 1                                               Page 1

Page 11                                              Page 11

Page 98                                              Page 98

Attachment A                                         Attachment A<PAGE>
                                                                   EXHIBIT 10.36

                               MODIFICATION NO. 10

                            TO THE SATELLITE CONTRACT

                  (ECHOSTAR VII - 119 (DEGREE) WEST LONGITUDE)

                                     BETWEEN

                           LOCKHEED MARTIN CORPORATION

                                       AND

                          ECHOSTAR ORBITAL CORPORATION

                             DATED JANUARY 27, 2000

This Modification is effective the 12th day of December 2001.

WITNESS THAT:

WHEREAS, EchoStar Orbital Corporation ("Buyer") and Lockheed Martin Corporation

("Contractor"), mutually agree to modify the subject Contract to:

o        Modify EXHIBIT B THE ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION
         DOC#8575921 REV. F. This modification incorporates mutually agreed upon
         changes as identified in the attached Change Control Board (CCB) Item
         No. 385, dated November 5, 2001.

NOW THEREFORE, in consideration of the mutual covenants and conditions contained
herein, Buyer and Contractor agree to modify the Contract as follows:

<PAGE>

1.       EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION
         DOC#8575921,

         Delete EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE
         SPECIFICATIONDOC#8575921 REV. F in its entirety and replace with
         EXHIBIT B ECHOSTAR VII SPACECRAFT PERFORMANCE SPECIFICATION DOC#8575921
         REV. G.

IN WITNESS WHEREOF, the parties hereto have executed this Contract Amendment.

ECHOSTAR ORBITAL                                  LOCKHEED MARTIN
CORPORATION                                       CORPORATION

By:                                               By:
    ---------------------------------                 --------------------------
    David K. Moskowitz                                Sandra McMahan
    Senior Vice President and                         Contracts Manager
    General Counsel

EchoStar Communications Corporation hereby guarantees all of the obligations and
duties of EchoStar Orbital Corporation under the Contract to which this
guarantee is attached.

ECHOSTAR COMMUNICATIONS
CORPORATION

By:
    ---------------------------------
    David K. Moskowitz
    Senior Vice President and
    General Counsel

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