Satellite radio

Satellite radio is defined by the International Telecommunication Union (ITU)'s ITU Radio Regulations (RR) as a broadcasting-satellite service.[1] 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.[2][3] It is available by subscription, mostly commercial free, and offers subscribers more stations and a wider variety of programming options than terrestrial radio.[4]

Satellite radio technology was inducted into the Space Foundation Space Technology Hall of Fame in 2002.[5] Satellite radio uses the 2.3 GHz S band in North America for nationwide digital radio broadcasting.[6] In other parts of the world, satellite radio uses the 1.4 GHz L band allocated for DAB.[7]