Satellite radio - wikipedia, Satellite radio is defined by the international telecommunication union (itu)'s itu radio regulations (rr) as a broadcasting-satellite service. the satellite's signals are broadcast nationwide, across a much wider geographical area than terrestrial radio stations, and the service is primarily intended for the occupants of motor vehicles. it is available by subscription, mostly commercial free. Xm satellite radio - wikipedia, Xm satellite radio (xm) was one of the three satellite radio and online radio services in the united states and canada, operated by sirius xm holdings.it provided pay-for-service radio, analogous to cable television. its service included 73 different music channels, 39 news, sports, talk and entertainment channels, 21 regional traffic and weather channels and 23 play-by-play sports channels..
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