British Isles: BBC DAB - Digital One - Local Multiplexes
BBC NATIONAL DAB Multiplex Coverage Map - as of end 2011:
BBC NATIONAL DAB Multiplex Coverage Map - as of end 2011
The BBC and commercial operators are gradually adding DAB transmitters to the national BBC and Digital One national networks to expand coverage as far as is economically viable.
While the BBC's national VHF/FM radio transmitter networks enjoy approximately 98% population coverage, it is likely to be some years bef re their DAB coverage reaches this figure. However [in 2009] the authorities stated aim was to switch off all national FM transmitters by around 2015, suggesting that full nationwide coverage should be achieved by the DAB network by this time
Economics plays a more important factor in the currently under-utilised commercial Digital One network, so it is unlikely that D1 will be able to attain the almost universal (98%) coverage that would seem to be the aim of the BBC. Due to the laws of dimishing returns; further expensive transmitters would cover increasingly smaller areas of population to a point that, for DAB, the cost of coverage per head of population becomes economically unjustifiable.
In 2005 Ofcom released an additional frequency block in VHF Band III for a further national DAB multiplex. The licence to operate this second national DAB multiplex was advertised in 2007 and later won by a Channel Four Television consortium. However by 2009 the economic downturn had made the business model financially unviable and Channel Four were forced to hand back the second national DAB licence to Ofcom, so for the time being there will not be a second national DAB multiplex.
It may be the case the licence for the second national DAB multiplex could be advertised at some point in the future.
The first national commercial DAB transmitter network, Digital One, was initally owned and operated by a consortium that included GWR and NTL. GWR and Capital Radio later merged to form GCap. In 2008 GCap decided that the ownership of the national DAB radio transmission network did not fit in with the new group's strategy. and the ownership of the D1 network passed to the UK's major transission provider Arqiva. (GCap itself and Chrysalis Radio were later subsumed ito the Global Radio group in the continuing conolidation of commercial radio to form Global Radio).
During 2010 Arqiva were very proactive and filled the, almost empty, national DAB multiplex with many new radio services.
In 2005 Ofcom also released a further three frequency blocks for expansion of local DAB multiplexes to provide almost universal coverage in areas already served by major commercial local radio stations.
Note: BBC local radio does not have its own multiplex. BBC local radio stations are carried on the local commercial radio multiplexes by agreement. Therefore in those areas that do not yet have a local commercial DAB multiplex, there can be no coverage for BBC local radio.
During 2010 the BBC, using transmission facilities contractor Arqiva, continued installing many new DAB transmitters at sites across the UK to improve the coverage of the BBC's national DAB network:
3rd December 2010: Wrotham, Kent
2nd December 2010: Carnmoney Hill, County Antrim, Belfast
30th November 2010: Tiverton, Devon
29th November 2010: Littleborough, Rochdale
27th November 2010: Tully Quarry, Northern Ireland
11th November 2010: North Hessary Tor, Dartmoor, Devon
10th November 2010: Maddybenny More, Northern Ireland
9th November 2010: Bridport, Dorset
29 October 2010: Enniskillen, County Fermanagh, Northern Ireland
28 October 2010: Larne, County Antrim, Northern Ireland
1 October 2010: Rosneath, Argyll and Bute
17 September 2010: Drumcarrow Craig, Fife
15 September 2010: Millburn Muir, Dumbarton
14 September 2010: Tay Bridge, Dundee
15 July 2010: Corby, Kettering
13 July 2010: Mendlesham, Suffolk
14 April 2010: Balgownie, Aberdeen
25 March 2010: Mormond Hill, Aberdeenshire
5 March 2010: Grantown, Morayshire
3 March 2010: Kingussie, Inverness-shire
Visit the BBC's DAB Digital Radio Transmitters Page on the BBC Recption Advice pages here...
Above: Digital One National DAB Coverage as in 2006
| ^Top Of Page
Back to Map Index | DAB Case Studies
Home | Contact | Site Map | Links