Echo 15 Letter 11-21

LETTER submitted by EchoStar Satellite Operating Corporation

Letter

2013-11-21

This document pretains to SAT-MOD-20131030-00126 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2013103000126_1028584

2 3 0 0 N S T R E E T, N W SUITE 700 WASHINGTON, DC 20037 TEL 202.783.4141 FA X 202.783.5851 W W W.W B K L AW. C O M November 21, 2013 Marlene H. Dortch Secretary Federal Communications Commission 445 12th Street, SW Washington, DC 20554 Re: File No. SAT-MOD-20131030-00126 (Call Sign S2811) Dear Ms. Dortch: EchoStar Satellite Operating Corporation submits this letter correcting a typographical error in the technical data contained in Schedule S of the above-referenced application, specifically with respect to the command link budget for the abbreviated communications beams. Attached is a revised chart correcting the typographical error. Please direct any questions regarding this matter to the undersigned. Sincerely, /s/ Phuong N. Pham Phuong N. Pham Counsel for EchoStar Attachment cc: Stephen Duall Chip Fleming

Marlene H. Dortch November 21, 2013 Page 2 Command Link Budget Link Parameters Comms Beam Frequency 17,791.50 MHz Tx E/S Antenna Gain 63.9 dBi Power to Tx E/S Antenna -13.8 dBW Tx E/S EIRP 50.1 dBW Incident Flux Density -112 dBW/m2 Aperture Factor -46.5 dB-m2 Polarization Loss 0 dB Incident Isotropic Power -158.5 dBW Antenna Gain 42.5 dBi Total Receive Losses 18 dB Receiver Input Power -134 dBW Receiver Threshold -145 dBW Spacecraft Margin 11 dB


Document Created: 2013-11-21 15:15:17
Document Modified: 2013-11-21 15:15:17
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