Editing BBC Radio 1 (section)

===Full-time FM broadcasting===
Due to the rising competition from commercial FM stations, the BBC began to draw up plans for Radio 1 to broadcast on FM full time. This process began in London on 31 October 1987, at low power on a temporary frequency of {{frequency|104.8|MHz}}.<ref>{{cite web |title=Plans for Radio 1 FM services introduction |url=http://www.radiorewind.co.uk/images/transmitfm_sht1.jpg|publisher=Radio Rewind |access-date=20 May 2014}}</ref> The Department of Trade and Industry (predecessor to [[Ofcom]]) who were then the regulators for allocation of radio bandwidths in the UK, began to free up FM police and emergency communication frequencies which were operating from 97.9&nbsp;MHz to 102.0&nbsp;MHz. This was in preparation for new FM radio stations planned for the future. The BBC acquired 97.9 FM to 99.8 FM specifically for Radio 1.

The rollout of Radio 1 on FM nationally began on 1 September 1988, starting with [[Central Region, Scotland|Central Scotland]] (98.6&nbsp;MHz), the [[Midlands]] (98.4&nbsp;MHz) and the north of England (98.8&nbsp;MHz).<ref name="radiorewind1" /> On 24 November 1988, [[Belfast]] was added to the network on another temporary frequency on 96.0&nbsp;MHz.

From October 1988, due to the expansion of Radio 1's FM network, Radio 1 scaled back its airtime on Radio 2's FM frequencies in two phases - Phase 1 ending on weeknights (10pm–midnight) and Sunday evenings (7pm–midnight). As the FM engineering programme progressed, Phase 2 was introduced  from March 1990 - ceasing Saturday afternoons (1pm to 7pm) and the Sunday slot for the UK Top 40 (5pm-7pm). After 23 years, the shared FM frequency alliance between Radios 1 and 2 came to an end.

This resulted with BBC Radio 2 transmitting on FM full-time, where Radio 2's former AM frequencies - 693 & 909 - were allocated to BBC Radio 5.

Radio 1 made great efforts to promote its new FM service, renaming itself on-air initially as 'Radio 1 FM' and later as '1FM' until 1995. After reorganisation and a change of [[transmitter]] reallocation of the FM frequencies, especially in London (from 104.8 to 98.8&nbsp;MHz), the Midlands (98.4 to 97.9&nbsp;MHz) and Belfast (96.0 to 99.7&nbsp;MHz), the engineering programme was completed in 1995.

Until 2024, the station's [[Radio Data System|RDS]] name displayed "Radio 1". Since 2024 the RDS name now displays as "BBC R1" in line with the other BBC stations.