|Licensed area||United Kingdom|
|Frequency||12B (225.648 MHz)|
|Air date||27 September 1995|
BBC National DAB is a digital audio broadcasting multiplex in the UK, for a number of radio stations which have UK wide coverage. The multiplex is owned and operated by the BBC and is transmitted from a number of transmitter sites across the country; it only carries BBC radio stations.
As of the end of 2017, more than 97% of the UK's population are within reach of the multiplex following the completion of the switching on of a fourth set of new transmitters over the previous two years which had seen the reach increase from 93%. Any further expansion of DAB radio is awaiting a decision by Government on any possible digital radio switchover.
The following channels are receivable on any digital-equipped DAB radio in the BBC National DAB coverage area:
|Service||Service ID||Bit rate||Audio channels||Description||Analogue availability|
|BBC Radio 1||C221||128 kbit/s||Joint stereo||Youth-orientated popular music and speech||97.1, 97.7 - 99.8 MHz|
|BBC Radio 2||C222||128 kbit/s||Joint stereo||Adult-oriented pop music||88.0 - 90.2 MHz|
|BBC Radio 3||C223||160-192 kbit/s||Joint stereo||Classical Music||90.3 - 92.4 MHz|
|BBC Radio 4 (FM)||C224||80-128 kbit/s||Mono / joint stereo||News & Speech||92.5 - 94.6 MHz|
103.6 - 104.9 MHz
|BBC Radio 5 Live||C225||64-80 kbit/s||Mono||Live news and sport||909, 693, 990 kHz and selected BBC Regional Stations at night|
|BBC Radio 6 Music||C22B||128 kbit/s||Joint stereo||Classic rock, alternative rock, funk, indie, jazz, hip-hop||—|
|BBC Radio 4 Extra||C22C||80 kbit/s||Mono||Comedy, drama and children's programming||—|
|BBC Radio 1Xtra||C22A||128 kbit/s||Joint stereo||New black / urban music||—|
|BBC Asian Network||C236||64 kbit/s||Mono||South Asian orientated||Various MW|
|BBC World Service||C238||64 kbit/s||Mono||English language version of the BBC World Service||On Radio 4 frequencies (01:00-05:20 only)|
|BBC Guide||E1C79E5E||16-32 kbit/s||Data||Hidden service, EPG data||—|
The BBC National DAB multiplex makes extensive use of dynamic ensemble reconfiguration to allow a number of part-time services to broadcast. While these additional services are on air the bit rates of (one or more of) BBC Radio 3, BBC Radio 4, BBC Radio 5 Live, and data services are reduced.
|5 Live Sports Extra||Live sport - used to broadcast either Test Match Special or a second sporting event when BBC Radio 5 live is also broadcasting live sport.|
|Yesterday In Parliament||Radio 4 LW opt-out simulcast; Weekdays 08:30-09:00; Saturdays 08:45-09:00.|
|Daily Service||Christian Music and Worship, Radio 4 LW opt-out simulcast; Weekdays 09:45-10:00|
In recent years, the BBC has begun experimenting with short-term "Pop-up" digital radio stations, each broadcasting for approximately 4 days at a time, covering music festivals and other special events. The first to broadcast was BBC Radio 5 Live Olympics Extra in 2012, then BBC Radio 2 Eurovision launched for the first time in 2014, and was joined by BBC Radio 2 Country, BBC Music Jazz in 2015 and BBC Radio 2 50s in April 2016. When these temporary stations are on air, there is normally a reduction in bit rate of their parent station (Radio 1, Radio 2 or Radio 3).
|BBC 5 Live Olympics Extra||Available during 2012 Summer Olympics with coverage consisting of sports commentaries.|
|BBC Radio 2 Eurovision||Launched in May 2014 to extend the BBC's coverage of the Eurovision Song Contest. Returned in 2015 to provide coverage of the 2015 contest.|
|BBC Radio 2 Country||Launched in March 2015 to provide coverage of London's C2C: Country to Country Country music festival. Returned in 2016 to cover the 2016 festival and again in 2017.|
|BBC Music Jazz||Launched in November 2015 as a joint venture between BBC Radio 3 and Jazz FM, with programming celebrating Jazz music in all its varied forms.|
|BBC Radio 2 50s||Launched in April 2016 as a celebration of the music and entertainment of the 1950s.|
|BBC Radio 1 Vintage||Available in September 2017 as a celebration of BBC Radio 1's 50th anniversary.|
BBC Asian Network was due to be axed in around 2011 after plans to close down the station were published. The BBC also planned to close 6 Music. Since then both stations have been saved from closure - 6 Music was retained after listening figures increased and a campaign was set up on Facebook which had 180,000 supporters.