Satellite radio (also called SDARS by the FCC) uses two proprietary standards instead of DAB-S, which requires users to change equipment when switching from one provider to the other, and prevents other competitors from offering new choices as stations can do on terrestrial radio. Had the FCC picked DAB-T for terrestrial radio, no separate satellite receiver would have been needed at all, and the only difference from DAB receivers in the rest of the world would be the need to tune S band instead of L band.