THIRD SUPPLEMENTAL INDENTURE

THIS THIRD SUPPLEMENTAL INDENTURE (this “Third Supplemental Indenture”), entered into as of March 23, 2017, by and among Hughes Satellite Systems Corporation (formerly known as EH Holding Corporation), a Colorado corporation (the “Company”), the guarantors listed on the signature pages to the Secured Indenture (the “Guarantors”), Cheyenne Data Center L.L.C., a Colorado limited liability company (the “Supplemental Guarantor”), and Wells Fargo Bank, National Association, as trustee (the “Trustee”) and collateral agent (the “Collateral Agent”). Capitalized terms used herein and not otherwise defined herein are used as defined in the Secured Indenture referred to below.

WHEREAS, the Company, the guarantors listed on the signature pages thereto and the Trustee and Collateral Agent entered into that certain Secured Indenture, dated as of June 1, 2011, relating to the 6½% Senior Secured Notes due 2019 of the Company in original principal amount of $1,100,000,000 (the “Secured Notes”), as supplemented by a Supplemental Indenture, dated as of June 8, 2011, by and among the Company, the Guarantors and the Trustee and Collateral Agent and as further supplemented by a Second Supplemental Indenture, dated as of March 28, 2014, by and among the Company, the guarantors listed on the signature pages thereto and the Trustee and Collateral Agent (as so supplemented, the “Secured Indenture”);

WHEREAS, the Company has formed a new Wholly Owned Subsidiary, the Supplemental Guarantor;

WHEREAS, the Supplemental Guarantor is a Restricted Subsidiary of the Company;

WHEREAS, pursuant to Section 4.13 of the Secured Indenture, the Supplemental Guarantor is required to become a Guarantor under the Secured Indenture; and

WHEREAS, this Supplemental Indenture has not resulted in a material modification of the Notes for Foreign Account Tax Compliance Act (FATCA) purposes.

Section 1. The Supplemental Guarantor shall be a Guarantor under the Secured Indenture and be bound by the terms thereof applicable to Guarantors and shall deliver an executed Guarantee pursuant to Section 11.02.

Section 2. This Third Supplemental Indenture is an amendment supplemental to the Secured Indenture, and the Secured Indenture and this Third Supplemental Indenture will henceforth be read together.

Section 3. This Third Supplemental Indenture shall be governed by and construed in accordance with the laws of the State of New York.

Section 4. This Third Supplemental Indenture may be signed in various counterparts which together will constitute one and the same instrument.

The exchange of copies of this Third Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Third Supplemental Indenture as to the parties hereto and may be used in lieu of the original Third Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes.