EXHIBIT 4.6

                           SUPPLEMENTAL INDENTURE

                      SUPPLEMENTAL INDENTURE (this "Supplemental
               Indenture"), dated as of January 31, 2001, among ALAMOSA
               FINANCE, LLC, a Delaware limited liability company, ALAMOSA
               LIMITED, LLC, a Delaware limited liability company
               (collectively, the "New Subsidiary Guarantors"), each a
               subsidiary of ALAMOSA (DELAWARE), INC. (formerly known as
               ALAMOSA PCS HOLDINGS, INC.), a Delaware corporation (the
               "Company"), on behalf of itself and the Subsidiary
               Guarantors (the "Existing Subsidiary Guarantors") under the
               indenture referred to below, and WELLS FARGO BANK MINNESOTA,
               N.A., (formerly known as NORWEST BANK MINNESOTA, N.A.), a
               national banking association, as trustee under the indenture
               referred to below (the "Trustee").

                            W I T N E S S E T H:

               WHEREAS, the Company and the Existing Subsidiary Guarantors
have heretofore executed and delivered to the Trustee an Indenture (the
"Indenture") dated as of February 8, 2000, providing for the issuance of an
aggregate principal amount at maturity of up to $350,000,000 of 127/8%
Senior Discount Notes due 2010 (the "Securities");

               WHEREAS Section 4.15 of the Indenture provides that under
certain circumstances the Company is required to cause the New Subsidiary
Guarantors to execute and deliver to the Trustee a supplemental indenture
pursuant to which the New Subsidiary Guarantors shall unconditionally
guarantee all the Company's obligations under the Securities pursuant to a
Subsidiary Guaranty on the terms and conditions set forth herein; and

               WHEREAS, pursuant to Section 9.01 of the Indenture, the
Trustee, the Company and the Existing Subsidiary Guarantors are authorized
to execute and deliver this Supplemental Indenture;


               NOW THEREFORE, in consideration of the foregoing and for
other good and valuable consideration, the receipt of which is hereby
acknowledged, the New Subsidiary Guarantors, the Company, the Existing
Subsidiary Guarantors and the Trustee mutually covenant and agree for the
equal and ratable benefit of the holders of the Securities as follows:

               1. Agreement to Guarantee. Effective as of February 10,
2000, the New Subsidiary Guarantors hereby agree, jointly and severally
with all other existing Subsidiary Guarantors, to unconditionally guarantee
the Company's obligations under the Securities on the terms and subject to
the conditions set forth in Articles X and XI of the Indenture and to be
bound by all other applicable provisions of the Indenture.

               2. Ratification of Indenture; Supplemental Indentures Part
of Indenture. Except as expressly amended hereby, the Indenture is in all
respects ratified and confirmed and all the terms, conditions and
provisions thereof shall remain in full force and effect. This Supplemental
Indenture shall form a part of the Indenture for all purposes, and every
holder of Securities heretofore or hereafter authenticated and delivered
shall be bound hereby.

               3. Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE
GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK BUT WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW
TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION
WOULD BE REQUIRED THEREBY.

               4. Trustee Makes No Representation. The Trustee makes no
representation as to the validity or sufficiency of this Supplemental
Indenture.

               5. Counterparts. 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.

               6. Effect of Headings. The Section headings herein are for
convenience only and shall not effect the construction thereof.


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

                                    ALAMOSA FINANCE, LLC


                                    By:
                                         /s/ David E. Sharbutt
                                         -------------------------------
                                         Name:  David E. Sharbutt
                                         Title: Manager and President


                                    ALAMOSA LIMITED, LLC


                                    By:
                                         /s/ Barry A. Crozier
                                         -------------------------------
                                         Name:  Barry A. Crozier
                                         Title: Vice President


                                    ALAMOSA (DELAWARE), INC., on behalf
                                    of itself and the Existing Subsidiary
                                    Guarantors


                                    By:
                                         /s/ David E. Sharbutt
                                         -------------------------------
                                         Name:  David E. Sharbutt
                                         Title: Chairman of the Board


                                    WELLS FARGO BANK MINNESOTA, N.A.,
                                    as Trustee


                                    By:
                                         /s/ Timothy P. Mowdy
                                         ---------------------------------
                                         Name:  Timothy P. Mowdy
                                         Title: Corporate Trust Officer