ETSI Satellite Digital Radio describes a standard of satellite digital radio. It is an activity of the european standardisation organisation ETSI. It addresses systems where a satellite broadcast directly to mobile and handheld receivers in L band or S band and is complemented by terrestrial transmitters. The broadcast content consists of multicast audio, video and data. The satellite component allows geographical coverage at low cost, whereas the terrestrial component improves reception quality in built up areas. The specifications considers conditional access and Digital Rights Management. 1worldspace will use ETSI SDR in its new network covering Europe from 2009. Also Ondas Media has announced to use ETSI SDR.