XM-1 and 2 Letter re

LETTER submitted by XM Radio LLC

Letter Regarding Relaxed NS Stationkeeping

2013-02-21

This document pretains to SAT-MOD-20101216-00262 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2010121600262_987004

SatCom Law LLC 1317 F St. NW, Suite 400 Washington, D.C. 20004 T 202.599.0975 www.satcomlaw.com February 21, 2013 By Electronic Filing Ms. Marlene H. Dortch Secretary Federal Communications Commission 445 12th Street, S.W. Washington, D.C. 20554 Re: XM-1 and XM-2 (Call Signs S2118 & S2119): Relaxed North-South Stationkeeping Dear Ms. Dortch: XM Radio LLC (“XM Radio”), by its attorney and pursuant to Section 25.280(a) of the Commission’s rules, 47 C.F.R. § 25.280(a), hereby advises the Commission that it plans to begin operating the XM-1 and XM-2 spacecraft in an expanded north-south stationkeeping volume at the 115.25° W.L. orbital location. Specifically, XM Radio plans to permit these two satellites to operate with up to +/- 1.0 degree north-south stationkeeping tolerance. XM Radio expects that XM-1 and XM-2 will leave their current inclination window no earlier than March 1, 2013. XM Radio will periodically perform north-south stationkeeping maneuvers to maintain XM-1 and XM-2 within a +/ 1.0 degree north-south stationkeeping volume. This relaxation of north-south stationkeeping does not change the end-of-life predicted for XM-1 or XM-2, each of which is expected to continue to serve as an in-orbit spare through its remaining license term (May 31, 2014 for XM-1 and March 31, 2014 for XM-2). Operations of XM-1 and XM-2 within the expanded north-south stationkeeping volume will conform to the requirements of Section 25.280(b) of the Commission’s rules. Please address any questions regarding this matter to the undersigned. Respectfully submitted, /s/ Karis A. Hastings Karis A. Hastings Counsel for XM Radio LLC karis@satcomlaw.com cc: Stephen Duall Jay Whaley Kathyrn Medley


Document Created: 2013-02-21 19:21:26
Document Modified: 2013-02-21 19:21:26
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