Sources differ on the exact frequency range of the band. For example, the Swiss Federal Office of Communications, the Broadcast engineer's reference book and Ericsson India Ltd all define the range of Band IV from 470 to 582 MHz. An EICTA paper defines the range as 474 to 602 MHz, whilst the BBC define the range as 470 to 614 MHz. Band IV is primarily used for analogue and digital (DVB-T & ATSC) television broadcasting, as well as services intended for mobile devices such as DVB-H.
In the UK, Band IV allocations are 8 MHz wide, traditionally consisting of 14 channels from UHF 21 to 34 inclusive. However, in the mid-1990s the squeezing of analogue Channel 5 broadcasts into the existing national terrestrial TV transmitter network effectively closed a gap between bands IV and V, which was previously reserved for radar applications and home consumer devices. This stretched the practical definition of Band IV in the UK to cover 18 channels from UHF 21 to 38 inclusive. Aerials of the group A type cover this band.
The following table covers the most inclusive definition of Band IV in the UK. Rows with a yellow background indicate channels which were not traditionally (before the mid-1990s) considered part of Band IV for TV broadcasting purposes and may not be considered part of the band in other countries (e.g. Switzerland).