XM Satellite Radio Schedules Second Quarter 2007 Financial Results Conference Call for July 26

WASHINGTON, July 12 /PRNewswire-FirstCall/ -- XM Satellite Radio (NASDAQ: XMSR) has scheduled a conference call for Thursday, July 26, 2007, at 10:00 AM ET to announce and discuss its second quarter 2007 financial results. Prior to the call, XM Radio's second quarter 2007 results will be posted to the Company's website at http://www.xmradio.com/ and released to PR Newswire and First Call.

To listen to the conference call via telephone, please call one of the following numbers approximately 10 minutes prior to the planned start of the call.

                    Call-in number: (877) 265-5808
                 Local call-in number: (706) 679-7931
                       Conference ID#: 6562974

The conference call can also be accessed through a live webcast on the Company's website at http://www.xmradio.com/ (click on "Investor Info" link at the bottom of the page). The webcast of the call will also be archived on the Company's Web site.

If you are unable to participate in the scheduled call, a replay of the conference call will be available after 11:30 a.m. ET on Thursday, July 26, 2007 until October 26, 2007.

                   Playback Numbers: (800) 642-1687
                Local playback number: (706) 645-9291
                       Conference ID#: 6562974
  
About XM

XM (NASDAQ: XMSR) is America's number one satellite radio company with more than 8 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City, Chicago, the Country Music Hall of Fame in Nashville, Toronto and Montreal, XM's 2007 lineup includes more than 170 digital channels of choice from coast to coast: commercial-free music, premier sports, news, talk radio, comedy, children's and entertainment programming; and the most advanced traffic and weather information.

XM, the leader in satellite-delivered entertainment and data services for the automobile market through partnerships with General Motors, Honda, Hyundai, Nissan, Porsche, Subaru, Suzuki and Toyota, is available in 140 different vehicle models for 2007. XM's industry-leading products are available at consumer electronics retailers nationwide. For more information about XM hardware, programming and partnerships, please visit http://www.xmradio.com/.

Factors that could cause actual results to differ materially from those in the forward-looking statements in this press release include demand for XM Satellite Radio's service, the Company's dependence on technology and third party vendors, its potential need for additional financing, as well as other risks described in XM Satellite Radio Holdings Inc.'s Form 10-K filed with the Securities and Exchange Commission on 3-1-07. Copies of the filing are available upon request from XM Radio's Investor Relations Department.

SOURCE: XM Satellite Radio

CONTACT: Investors, Joe Wilkinson, +1-202-380-4008,
joe.wilkinson@xmradio.com, or Media, Nathaniel Brown, +1-212-708-6170,
nathaniel.brown@xmradio.com, or Chance Patterson, +1-202-380-4318,
chance.patterson@xmradio.com, all of XM Satellite Radio

Web site: http://www.xmradio.com/