Attachment letter

letter

LETTER submitted by EchoStar

letter

2006-02-24

This document pretains to SAT-ASG-20050623-00134 for Assignment on a Satellite Space Stations filing.

IBFS_SATASG2005062300134_484942

i STEPTOE &JOHNSON«w atrorneys at caw Pancels Michalopootos 1330 Conmecteut Aenve. NY zorameass Washingn. DC 20036795 pmichalGsteproccom Tel2024203000 tox2024203002 steproccom RECEIVED February 24, 2006 FEB 2 4 2006 nenicato connagty se Kss %A olSeay MWn Via ELECTRONIC MAIL Fee o Andrea Kelly Po International Bureau Federal Communications Commission 445 12th Street, S.W. Washington, D.C. 20554 Re: EchoStar Satellite Operating Corporation —— Ka—band Authorization at 117° W.L. File Nos. SAT—LOA—20030827—00177, SAT—MOD—20041008—00196, SAT—MOD— 20041208—00218, SAT—ASG—20050623—00134; Call Sign $2490 Dear Ms. Kelly, Thank you for your call regarding the critical design review (*CDR") materials submitted by EchoStar Satelite Operating Corporation ("EchoStar®) for the above—referenced space station authorization.‘ As you noted, EchoStar is currently authorized to use Ku—band frequencies for the launch and transfer orbit TT&C operations of the proposed satellite, and to use Ka—band frequencies for on— station TT&C." However, the CDR materials submitted show the use of Ku—band frequencies for on— station TT&C. EchoStar confirms that this discrepaney was noted during the CDR process and has been recorded as an action item for the spacecraft manufacturer to address. EchoStar also confirms thatit will ‘ See Letter from Pantelis Michalopoulas, Counsel for EchoStar to Marlene H. Dortch, Secretary, FCC, filed in SAT—MOD—20041008—00196 (filed Dec. 8, 2005). * See EchoStar Satellte L.L.C., DA 05—336, Order and Authorization, File No. SAT—MOD— 20041208—00218, Call Sign 2490 (rel. Mar.2, 2005). washinaron +. wew vork +. rwotnix + tos anorits + tonbon + srusstis

Andrea Kelly February 24, 2006 Page2 not use Ku—band frequencies for on—station TT&C operations without appropriate authorization from the Commission. Please contact me if you have any questions. Yours sincerely, i Pantelis Michalopoulos Counselfor EchoStar Satellie Operating Corporation


Document Created: 2006-02-28 15:24:26
Document Modified: 2006-02-28 15:24:26
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