Document:

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                                                                    EXHIBIT 4.14

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                            ECHOSTAR DBS CORPORATION

                          6 3/8% SENIOR NOTES DUE 2011

                          FIRST SUPPLEMENTAL INDENTURE

                          Dated as of December 31, 2003

                         U.S. Bank National Association

                                     Trustee

================================================================================

<PAGE>

         FIRST  SUPPLEMENTAL  INDENTURE,  dated as of  December  31,  2003  (the
"Supplemental   Indenture"),   among  EchoStar  DBS   Corporation,   a  Colorado
corporation  (the  "Company"),   EchoStar  Satellite  Operating  Corporation,  a
Colorado corporation (the "New Guarantor"),  and U.S. Bank National Association,
as trustee (the "Trustee"),  to the indenture,  dated as of October 2, 2003 (the
"Original  Indenture"),  among the Company,  the  Guarantors  (as defined in the
Original  Indenture) and the Trustee,  for the 6 3/8% Senior Notes due 2011 (the
"Notes") of the Company.

                                    RECITALS

         The Company,  the Guarantors and the Trustee have  heretofore  executed
and delivered the Original Indenture providing for the issuance of the Notes.

         The  Company  or one of  the  Guarantors  has  determined  to  transfer
property or assets to the New Guarantor.

         Pursuant to Section 4.13 of the Original Indenture, the Company and the
New  Guarantor  have  duly   authorized  the  execution  and  delivery  of  this
Supplemental  Indenture to provide for the addition of the New  Guarantor to the
list of Guarantors under the Original Indenture.

         New  Guarantor has executed and delivers  herewith the  guarantee  (the
"New Guarantee") attached hereto as Exhibit A.

         All things necessary (i) to make the New Guarantee when executed by the
New Guarantor and delivered hereunder the valid obligations of the New Guarantor
and (ii) to make this  Supplemental  Indenture a valid  agreement of the Company
and the New Guarantor,  all in accordance with their respective terms, have been
done.

         In  consideration  of the premises  and the  covenants  and  agreements
contained herein,  and for other good and valuable  consideration the receipt of
which is hereby acknowledged, it is mutually agreed as follows for the equal and
ratable benefit of the Holders of the Notes.

SECTION 1. Additional Subsidiary Guarantee.

         Pursuant to Section 4.13 of the Original  Indenture,  New  Guarantor is
hereby  made a  party  to the  Original  Indenture  as a  "Guarantor",  and as a
"Guarantor"  the New Guarantor  unconditionally  guarantees all of the Company's
obligations under the Notes on the terms set forth in the Original Indenture.

SECTION 2. Effect on the Original Indenture.

         Except as amended by this Supplement Indenture,  the Original Indenture
shall remain in full force and effect and is hereby ratified and confirmed.

SECTION 3. Governing Law.

         The  internal  law of the State of New York shall govern and be used to
construe this Supplemental Indenture and the New Guarantee.

SECTION 4. Defined Terms.

         Unless otherwise indicated, capitalized terms used in this Supplemental
Indenture and not defined shall have the respective meanings assigned to them in
the Original Indenture.

                                       1
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SECTION 5. Counterpart Originals.

         The  parties  may  sign  any  number  of  copies  of this  Supplemental
Indenture.  Each  signed  copy shall be an  original,  but all of them  together
represent the same agreement.

SECTION 6. Effect of Headings.

         Section  headings herein are for convenience  only and shall not affect
the construction hereof.

SECTION 7. Severability.

         In case any provision in this Supplemental  Indenture shall be invalid,
illegal or  unenforceable,  the  validity,  legality and  enforceability  of the
remaining provisions shall not in any way be effected or impaired thereby.

                                       2
<PAGE>

         IN WITNESS  WHEREOF,  the parties hereto have caused this  Supplemental
Indenture to be duly executed as of the day and year first above written.

                                       ECHOSTAR DBS CORPORATION,
                                            a Colorado corporation

                                       By:    /s/ David K. Moskowitz
                                           -----------------------------------
                                           Name:  David K. Moskowitz
                                           Title: Senior Vice President

                                       U.S. BANK NATIONAL ASSOCIATION,
                                            as Trustee

                                       By:    /s/ Richard H. Prokosch
                                           ------------------------------------
                                           Name:  Richard H. Prokosch
                                           Title: Vice President

                                       ECHOSTAR SATELLITE OPERATING CORPORATION,
                                        as New Guarantor

                                       By:    /s/ David K. Moskowitz
                                           ------------------------------------
                                           Name:  David K. Moskowitz
                                           Title: Senior Vice President

<PAGE>

                                                                       Exhibit A

                                    GUARANTEE

         EchoStar Satellite  Operating  Corporation and its successors under the
Indenture,  dated as of October 2, 2003 (the  "Indenture"),  among  EchoStar DBS
Corporation  (the  "Company"),  the Guarantors (as defined in the Indenture,  as
supplemented) and U.S. Bank National Association (the "Trustee"), for the 6 3/8%
Senior Notes due 2011 (the "Notes") of the Company,  jointly and severally  with
any other Guarantors,  hereby irrevocably and unconditionally guarantees (i) the
due and punctual  payment of the principal of, premium,  if any, and interest on
the Notes,  whether at  maturity,  by  acceleration  or  otherwise,  the due and
punctual payment of interest on the overdue  principal of and interest,  if any,
on the Notes, to the extent lawful, and the due and punctual  performance of all
other obligations of the Company to the Holders or the Trustee all in accordance
with the terms set forth in  Article  10 of the  Indenture,  (ii) in case of any
extension  of time of  payment  or  renewal  of any  Notes or any of such  other
obligations,  that the same will be promptly  paid in full when due or performed
in  accordance  with the terms of the  extension  or renewal,  whether at stated
maturity,  by  acceleration or otherwise and (iii) has agreed to pay any and all
costs and  expenses  (including  reasonable  attorneys'  fees)  incurred  by the
Trustee or any Holder in enforcing any rights under this Guarantee.  Capitalized
terms used  herein  have the  meanings  assigned  to them in the  Indenture,  as
amended and supplemented, unless otherwise indicated.

         No  stockholder,  officer,  director or  incorporator,  as such,  past,
present or future, of EchoStar  Satellite  Operating  Corporation shall have any
personal  liability  under this Guarantee by reason of his or its status as such
stockholder,  officer, director or incorporator. This Guarantee shall be binding
upon EchoStar Satellite Operating Corporation and its successors and assigns and
shall inure to the benefit of the  successors and assigns of the Trustee and the
Holders and, in the event of any transfer or  assignment of rights by any Holder
or the Trustee, the rights and privileges herein conferred upon that party shall
automatically  extend to and be  vested  in such  transferee  or  assignee,  all
subject to the terms and conditions hereof.

         This  Guarantee  shall not be valid or obligatory for any purpose until
the certificate of authentication on the Note upon which this Guarantee is noted
shall  have been  executed  by the  Trustee  under the  Indenture  by the manual
signature of one of its authorized officers.

         THE TERMS OF ARTICLE 10 OF THE  INDENTURE  ARE  INCORPORATED  HEREIN BY
REFERENCE.

         This  Guarantee  shall be governed by and construed in accordance  with
the laws of the State of New York.

                                        ECHOSTAR SATELLITE OPERATING CORPORATION

                                        BY:    /s/ DAVID K. MOSKOWITZ
                                            ----------------------------------
                                            NAME:  DAVID K. MOSKOWITZ
                                            TITLE: SENIOR VICE PRESIDENT<PAGE>

                                                                    EXHIBIT 4.15

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                            ECHOSTAR DBS CORPORATION

                       FLOATING RATE SENIOR NOTES DUE 2008

                          FIRST SUPPLEMENTAL INDENTURE

                          Dated as of December 31, 2003

                         U.S. Bank National Association

                                     Trustee

================================================================================

<PAGE>

                  FIRST SUPPLEMENTAL INDENTURE, dated as of December 31, 2003
(the "Supplemental Indenture"), among EchoStar DBS Corporation, a Colorado
corporation (the "Company"), EchoStar Satellite Operating Corporation, a
Colorado corporation (the "New Guarantor"), and U.S. Bank National Association,
as trustee (the "Trustee"), to the indenture, dated as of October 2, 2003 (the
"Original Indenture"), among the Company, the Guarantors (as defined in the
Original Indenture) and the Trustee, for the Floating Rate Senior Notes due 2008
(the "Notes") of the Company.

                                    RECITALS

                  The Company, the Guarantors and the Trustee have heretofore
executed and delivered the Original Indenture providing for the issuance of the
Notes.

                  The Company or one of the Guarantors has determined to
transfer property or assets to the New Guarantor.

                  Pursuant to Section 4.13 of the Original Indenture, the
Company and the New Guarantor have duly authorized the execution and delivery of
this Supplemental Indenture to provide for the addition of the New Guarantor to
the list of Guarantors under the Original Indenture.

                  New Guarantor has executed and delivers herewith the guarantee
(the "New Guarantee") attached hereto as Exhibit A.

                  All things necessary (i) to make the New Guarantee when
executed by the New Guarantor and delivered hereunder the valid obligations of
the New Guarantor and (ii) to make this Supplemental Indenture a valid agreement
of the Company and the New Guarantor, all in accordance with their respective
terms, have been done.

                  In consideration of the premises and the covenants and
agreements contained herein, and for other good and valuable consideration the
receipt of which is hereby acknowledged, it is mutually agreed as follows for
the equal and ratable benefit of the Holders of the Notes.

SECTION 1.        Additional Subsidiary Guarantee.

                  Pursuant to Section 4.13 of the Original Indenture, New
Guarantor is hereby made a party to the Original Indenture as a "Guarantor", and
as a "Guarantor" the New Guarantor unconditionally guarantees all of the
Company's obligations under the Notes on the terms set forth in the Original
Indenture.

SECTION 2.        Effect on the Original Indenture.

                  Except as amended by this Supplement Indenture, the Original
Indenture shall remain in full force and effect and is hereby ratified and
confirmed.

SECTION 3.        Governing Law.

                  The internal law of the State of New York shall govern and be
used to construe this Supplemental Indenture and the New Guarantee.

                                       1
<PAGE>

SECTION 4.        Defined Terms.

                  Unless otherwise indicated, capitalized terms used in this
Supplemental Indenture and not defined shall have the respective meanings
assigned to them in the Original Indenture.

SECTION 5.        Counterpart Originals.

                  The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy shall be an original, but all of them together
represent the same agreement.

SECTION 6.        Effect of Headings.

                  Section headings herein are for convenience only and shall not
affect the construction hereof.

SECTION 7.        Severability.

                  In case any provision in this Supplemental Indenture shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be effected or impaired thereby.

                                       2
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Supplemental Indenture to be duly executed as of the day and year first above
written.

                                   ECHOSTAR DBS CORPORATION,
                                       a Colorado corporation

                                   By: /s/ David K. Moskowitz
                                       -----------------------------------------
                                       Name:  David K. Moskowitz
                                       Title: Senior Vice President

                                   U.S. BANK NATIONAL ASSOCIATION,
                                       as Trustee

                                   By: /s/ Richard H. Prokosch
                                       -----------------------------------------
                                       Name:  Richard H. Prokosch
                                       Title: Vice President

                                   ECHOSTAR SATELLITE OPERATING CORPORATION,
                                       as New Guarantor

                                   By: /s/ David K. Moskowitz
                                       -----------------------------------------
                                       Name:  David K. Moskowitz
                                       Title: Senior Vice President

<PAGE>

                                                                       Exhibit A

                                    GUARANTEE

                  EchoStar Satellite Operating Corporation and its successors
under the Indenture, dated as of October 2, 2003 (the "Indenture"), among
EchoStar DBS Corporation (the "Company"), the Guarantors (as defined in the
Indenture, as supplemented) and U.S. Bank National Association (the "Trustee"),
for the Floating Rate Senior Notes due 2008 (the "Notes") of the Company,
jointly and severally with any other Guarantors, hereby irrevocably and
unconditionally guarantees (i) the due and punctual payment of the principal of,
premium, if any, and interest on the Notes, whether at maturity, by acceleration
or otherwise, the due and punctual payment of interest on the overdue principal
of and interest, if any, on the Notes, to the extent lawful, and the due and
punctual performance of all other obligations of the Company to the Holders or
the Trustee all in accordance with the terms set forth in Article 10 of the
Indenture, (ii) in case of any extension of time of payment or renewal of any
Notes or any of such other obligations, that the same will be promptly paid in
full when due or performed in accordance with the terms of the extension or
renewal, whether at stated maturity, by acceleration or otherwise and (iii) has
agreed to pay any and all costs and expenses (including reasonable attorneys'
fees) incurred by the Trustee or any Holder in enforcing any rights under this
Guarantee. Capitalized terms used herein have the meanings assigned to them in
the Indenture, as amended and supplemented, unless otherwise indicated.

                  No stockholder, officer, director or incorporator, as such,
past, present or future, of EchoStar Satellite Operating Corporation shall have
any personal liability under this Guarantee by reason of his or its status as
such stockholder, officer, director or incorporator. This Guarantee shall be
binding upon EchoStar Satellite Operating Corporation and its successors and
assigns and shall inure to the benefit of the successors and assigns of the
Trustee and the Holders and, in the event of any transfer or assignment of
rights by any Holder or the Trustee, the rights and privileges herein conferred
upon that party shall automatically extend to and be vested in such transferee
or assignee, all subject to the terms and conditions hereof.

                  This Guarantee shall not be valid or obligatory for any
purpose until the certificate of authentication on the Note upon which this
Guarantee is noted shall have been executed by the Trustee under the Indenture
by the manual signature of one of its authorized officers.

                  THE TERMS OF ARTICLE 10 OF THE INDENTURE ARE INCORPORATED
HEREIN BY REFERENCE.

                  This Guarantee shall be governed by and construed in
accordance with the laws of the State of New York.

                                        ECHOSTAR SATELLITE OPERATING CORPORATION

                                        BY: /S/ DAVID K. MOSKOWITZ
                                            ------------------------------------
                                            NAME:  DAVID K. MOSKOWITZ
                                            TITLE: SENIOR VICE PRESIDENT

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