The BBC had been allocated three FM frequency ranges in 1955, for the then Light Programme (now BBC Radio 2), Third Programme (now BBC Radio 3) and Home Service (now BBC Radio 4) stations. Thus, when Radio 1 was launched, there was no FM frequency range allocated for the station. The official reason was that there was no space, even though no commercial stations had yet been launched on FM. As a compromise, from launch until the end of the 1980s Radio 1 was allocated Radio 2's FM transmitters for a few hours each week, on Saturday afternoons, Sunday teatime and evening – most notably for the Top 40 Singles Chart on Sunday afternoons and up until midnight; 10pm to midnight on weeknights and Bank Holiday afternoons when Radio 2 was broadcasting a holiday edition of Sport on 2.
The BBC had been allocated three FM frequency ranges in 1955 for the then Light Programme (now BBC Radio 2) Third Programme (now BBC Radio 3) and Home Service (now BBC Radio 4) stations Thus when Radio 1 was launched there was no FM frequency range allocated for the station The official reason was that there was no space even though no commercial stations had yet been launched on FM As a compromise from launch until the end of the 1980s Radio 1 was allocated Radio 2's FM transmitters for a few hours each week on Saturday afternoons Sunday teatime and evening – most notably for the Top 40 Singles Chart on Sunday afternoons and up until midnight; 10pm to midnight on weeknights and Bank Holiday afternoons when Radio 2 was broadcasting a holiday edition of Sport on 2