Do I have to sign a contact for XM Service?
There is no contract, and the service can be cancelled at any time. How does XM Satellite Radio work? XM provides digital programming directly from three high-powered satellites in geostationary orbit above the equator. XM-1 (“Roll”) and XM-2 (“Rock”) are co-located at 115 west longitude and XM-3 (“Rhythm”) is located 85 west longitude in addition to a network of ground-based repeaters. The combination of the three satellites and a series of ground-based repeaters ensure uninterrupted coverage throughout all of continental North America. A song at XM Radio starts its broadcast life by being recorded into a specific format on a storage medium. It is encoded at a high bit rate (approximately 384kb/s) so as to preserve quality, and cataloged and organized in a similar way that we use ID3 tags for all digital files. The DJ at each XM station then selects the track or album of tracks to play for the next 15 to 30 minutes, previews the music, and allows the control system to encode the origi
