Terrestrial high-definition television  Terrestrial high-definition television is a form of broadcast high-definition television that is received via the terrestrial airwaves using either a VHF television aerial or a UHF television aerial. Depending on the country, the high definition television channels are broadcasts using either ATSC, ISDB-T, DVB-T or DVB-T2. Some countries such as Germany, The Netherlands and Belgium may only broadcasts their channels in standard definition via the terrestrial airwaves. This is largely because the uptake of cable television may be higher than that of terrestrial television, thus giving broadcasters very little incentive to provide their high-definition services via the terrestrial airwaves.