Osso, Satellite Radio is more or less the audio-only equivalent of DirecTV or DishNetwork satellite television ... a subscription-based service feeding special receivers program material beamed from an earth-based uplink via satellite downlink. Key features are nationwide availability, broad selection of programming - over 100 distinct channels or "stations" offering talk, news, weather, a multitude of sports, and tremendous music variety, much of which is commercial free, and particular suitability for mobile - ie car, truck, or boat - applications. In the US there are two competing providers,
Sirius and
XM.
I've been an XM subscriber for a couple years now. I like it a lot when I'm on the road ... or even on the tractor.