View source for Wenvoe transmitting station

{{Short description|Transmission station in Wales}}
{{Infobox UK Transmitter |
|name            = Wenvoe transmitting station
|image           = Wenvoe Transmitting Station.jpg
|caption = Wenvoe mast
|map_name = Wales Vale of Glamorgan
|coordinates = {{coord|51.459167|-3.281667|type:landmark_region:GB|display=inline,title}}
|height          = {{convert|260.7|m|ft|0}}
|gridref         = ST110742
|built = 1985
|demolished =
|collapsed =
|relay =
|BBC             = [[BBC Wales]]
|ITV             = [[ITV Cymru Wales]]
|localtv         = [[Cardiff TV]]
}}
The '''Wenvoe transmitting station''', officially known as '''Arqiva Wenvoe''', is the main facility for [[broadcasting]] and [[telecommunications]] for [[Cardiff]] and South Wales. It is situated close to the village of [[Wenvoe]] in the [[Vale of Glamorgan]], [[Wales]], in the [[United Kingdom|UK]].

It comprises a {{convert|260.7|m|ft|0|adj=on}}<ref>{{Cite web |title=Emprois [Wenvoe TV Mast] |url=https://www.emporis.com/buildings/1226005/wenvoe-tv-mast-cardiff-united-kingdom?pdf=|archive-url=https://web.archive.org/web/20220803160810/https://www.emporis.com/buildings/1226005/wenvoe-tv-mast-cardiff-united-kingdom?pdf=|url-status=usurped|archive-date=August 3, 2022}}</ref><ref name=":1">{{Cite web |date= |title=Ofcom [Details of the UK DTV network] |url=https://www.ofcom.org.uk/__data/assets/pdf_file/0015/42036/annex_15.pdf}}</ref><ref>{{Cite web |url=https://fmscan.org/transmitter.php?t=2800552 |title=Radio Frequencies & Transmitter Maps worldwide |access-date=2022-08-03 |website=fmscan.org}}</ref> [[guyed mast]] with [[Antenna (radio)|antennas]] attached at various heights.<ref name=":0" /> The average height above sea level is {{convert|384|m}} for the television antennas.<ref name=":0">{{Cite web |title=UKFreeTV |url=https://ukfree.tv/transmitters/tv/Wenvoe |access-date=2021-12-10}}</ref><ref name=":1" />

It is owned and operated by [[Arqiva]]. The site serves an estimated 1.5m listeners (0.63m households) in the South West of England, and 1.3m listeners (0.54m households) in Wales.

==History==
The original {{convert|750|ft|m|abbr=on|order=flip}} mast at the site was built in 1952 by the BBC to provide [[405-line]] [[VHF]] television to south Wales and the west of England. The station broadcast on [[Band I]] channel 5 (66.75&nbsp;MHz) from 15 August 1952 using its reserve transmitters,
<ref>''The Glamorgan Advertiser'', Maesteg, 22 August 1952, page 9.</ref> and from 20 December 1952 with its main high-power transmitters.<ref>Pawley, Edward. 1972.  ''BBC Engineering 1922-1972'' p. 374. BBC Publications, {{ISBN|0-563-12127-0}}</ref> It remained on air until the closure of 405-line television in 1985.

In 1955 [[VHF]] [[FM broadcasting|FM]] radio was added to the mast, carrying the BBC's [[BBC Home Service|Home Service]]. This was followed by the addition of the [[Light Programme]] in 1956 and the [[Third Programme]] in 1959.

In 1963 a second {{convert|625|ft|m|abbr=on|order=flip}} mast was built alongside the existing structure. This was in order to carry the new BBC Wales 405-line TV service on [[Band III]] VHF channel 13 (214.75&nbsp;MHz), and entered service on 9 February 1964.<ref>{{cite web|url=http://downloads.bbc.co.uk/rd/pubs/reports/1964-29.pdf |title=Report |publisher=downloads.bbc.co.uk |date= |accessdate=2021-06-26}}</ref> The 405-line transmitter for this service was closed early, in 1983.

On 12 September 1965, a 625-line black and white television service [[BBC2]] became available from Wenvoe on [[UHF]]. This new transmitter was capable of colour broadcasting from the start and was used for unannounced colour TV engineering test-transmissions from that point onwards.<ref>{{cite web|url=http://www.bbceng.info/videos.htm#Wenvoe%20Open%20Day%20-%201965 |title=Videos |publisher=Bbceng.info |access-date=2013-05-28}}</ref>

In September 1967 BBC2 officially launched a colour TV service from Wenvoe, a few months after BBC2 Crystal Palace and others had launched the UK's first colour broadcasting in July of that year.

In 1970 [[UHF]] 625-line colour television was introduced for [[BBC One|BBC1]] and [[ITV (TV network)|ITV]] Wales ([[ITV Wales & West|HTV Wales]]. [[S4C]] was added later when it launched in 1982.

In 1985, when 405-line TV closed, the site was re-engineered and both of the existing masts were taken down. They were replaced by a brand new mast (to be known as Wenvoe "A"), which is the structure currently in place at the site. Wenvoe "B" is a self-supporting telecommunications mast nearby. The VHF FM antennas were upgraded from the old horizontally polarised slot antennas to new mixed polarisation antennas, and the transmitter power was doubled.

The new analogue [[Channel 5 (UK)|Channel 5]] was launched in 1997, but this was never transmitted from Wenvoe. It was presumably thought that the 125&nbsp;kW transmitter at [[Mendip transmitting station|Mendip]] would serve a satisfactory number of homes in Wenvoe's service area. At the time, many homes within range of Mendip already had aerials pointing at it so as to receive the English-only [[Channel 4]] rather than the bilingual English/Welsh [[S4C]] transmitted from Wenvoe.

[[Image:Wenvoe Transmitter from Barry.jpg|thumb|right|350px|The mast seen in the distance from Barry]]

Work began on a new temporary {{convert|217.7|m|ft|0|abbr=on}} stayed mast (Wenvoe "C") on 14 June 2006 and it was completed in September 2006. This carried the analogue signals whilst Wenvoe "A" was to be structurally improved and extended by {{convert|23|m|ft|0}}. Wenvoe "A" was fitted with a new high-power digital antenna and a full reserve antenna. New high-power digital TV transmitters were installed in the buildings, which would allow Wenvoe "A" to broadcast all six main digital TV multiplexes, as well as a seventh currently proposed by OFCOM <ref>{{cite web|url=http://www.ofcom.org.uk/consult/condocs/notice524/summary/|archive-url=https://webarchive.nationalarchives.gov.uk/20090204172151/http://www.ofcom.org.uk/consult/condocs/notice524/summary/|url-status=dead|archive-date=2009-02-04|title=Notice of proposal to make regulations in connection with the award of licences in the frequency bands 542 to 550 MHz and 758 to 766 MHz covering Cardiff and Manchester &#124; Ofcom|website=webarchive.nationalarchives.gov.uk}}</ref> after the analogue signals were switched off in 2010.

This mechanical upgrade was completed by the summer of 2009 and Wenvoe "C" was dismantled starting in late August 2009.

Wenvoe's analogue BBC Two service was switched off on 3 March 2010 and the remaining analogue TV services were switched off on 31 March 2010. At this point, Wales had officially completed its switchover to digital TV services.<ref>{{cite news|url=http://news.bbc.co.uk/1/hi/wales/south_east/8593948.stm |title=Wales is first UK nation to switch fully to digital TV |publisher=BBC News |date=2010-03-31 |access-date=2013-05-28}}</ref>

[[BBC Radio Wales]] commenced broadcasting from the Wenvoe Transmitter on 6 December 2011 at 10:39. This replaced the low power VHF Transmitter on the [[Wenallt Hill]] which also carried BBC Wales VHF programme on 103.9&nbsp;MHz to South East Wales up to that point.

==Services listed by frequency==

===Analogue television===

====15 August 1952 - 9 February 1964====
{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|100
|[[BBC1|BBC Television]]
|}

====9 February 1964 - 12 September 1965====
The second mast came into service carrying the BBC Wales service.

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|100
|[[BBC One|BBC1 West]]
|-
|{{UK System A|ch=13}}
|13V
|200
|[[BBC1 Wales]]
|}

====12 September 1965 - April 1970====
The first UHF 625-line television service started from Wenvoe. This required the installation of a Band V antenna at the top of the mast,<ref>{{cite web|url=http://downloads.bbc.co.uk/rd/pubs/reports/1965-38.pdf |title=Report |publisher=downloads.bbc.co.uk |date= |accessdate=2021-06-26}}</ref> replacing the 1952 Band I antenna that had originally been sited there. The new Band I antenna was brought into service on 8 December 1964, and was sited immediately below the Band V antenna and above the Band II antenna. This put it in close proximity with the fixings of the top deck of guy wires, requiring some careful engineering so as not to affect the radiation pattern adversely.<ref>{{cite web|url=http://downloads.bbc.co.uk/rd/pubs/reports/1965-31.pdf |title=Report |publisher=downloads.bbc.co.uk |date= |accessdate=2021-06-26}}</ref>

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|—
|100
|[[BBC One|BBC1 West]]
|-
|{{UK System A|ch=13}}
|13V
|—
|200
|[[BBC One Wales|BBC1 Wales]]
|-
|{{UK System I|ch=51}}
|—
|51
|500
|[[BBC Two Wales|BBC2 Wales]]†
|}

† Monochrome initially, colour TV service started September 1967.

====April 1970 - 1 November 1982====
{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|—
|100
|[[BBC One|BBC1 West]]
|-
|{{UK System A|ch=13}}
|13V
|—
|200
|[[BBC One Wales|BBC1 Wales]]
|-
|{{UK System I|ch=41}}
|—
|41
|500
|[[ITV Wales & West|HTV Wales]]
|-
|{{UK System I|ch=44}}
|—
|44
|500
|BBC1 Wales†
|-
|{{UK System I|ch=51}}
|—
|51
|500
|[[BBC Two Wales|BBC2 Wales]]
|}

† Monochrome initially, colour production at BBC One Wales started 9 July 1970.

====1 November 1982 - 4 January 1983====
Channel Four launched across the UK. Being in Wales, Wenvoe transmitted the S4C variant.

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|—
|100
|[[BBC One|BBC1 West]]
|-
|{{UK System A|ch=13}}
|13V
|—
|200
|[[BBC One Wales|BBC1 Wales]]
|-
|{{UK System I|ch=41}}
|—
|41
|500
|[[ITV Wales & West|HTV Wales]]
|-
|{{UK System I|ch=44}}
|—
|44
|500
|BBC1 Wales
|-
|{{UK System I|ch=47}}
|—
|47
|500
|[[S4C]]
|-
|{{UK System I|ch=51}}
|—
|51
|500
|[[BBC Two Wales|BBC2 Wales]]
|}

====4 January 1983 - 3 January 1985====
The 405-line BBC1 Wales service on Band III from Wenvoe was discontinued early.<ref>{{Cite web |url=http://www.bbceng.info/Eng_Inf/EngInf_8.pdf |title=Archived copy |access-date=2012-05-18 |archive-date=2014-12-05 |archive-url=https://web.archive.org/web/20141205070538/http://www.bbceng.info/Eng_Inf/EngInf_8.pdf |url-status=dead }}</ref> The off-air 405-line relays at [[Abergavenny transmitting station|Abergavenny]], [[Carmarthen transmitting station|Carmarthen]] and [[Llanelli transmitting station|Llanelli]] had been decommissioned the previous year. This left [[Llandrindod Wells transmitting station|Llandrindod Wells]] (and Wenvoe's indirect off-air relay at [[Llanidloes transmitting station|Llanidloes]]) and [[Kilvey Hill transmitting station|Kilvey Hill]] as the last surviving 405-line BBC Wales transmitters classed as relays of Wenvoe.

405-line transmissions from Kilvey Hill and Llanidloes were due to shut in the second quarter of 1983, leaving Llandrindod Wells to continue alone until January 1985.

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}VHF
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System A|ch=5}}
|5V
|—
|100
|[[BBC One|BBC1 West]]
|-
|{{UK System I|ch=41}}
|—
|41
|500
|[[ITV Wales & West|HTV Wales]]
|-
|{{UK System I|ch=44}}
|—
|44
|500
|BBC1 Wales
|-
|{{UK System I|ch=47}}
|—
|47
|500
|[[S4C]]
|-
|{{UK System I|ch=51}}
|—
|51
|500
|[[BBC Two Wales|BBC2 Wales]]
|}

====3 January 1985 - 15 November 1998====
The 405-line VHF television system was shut down across the whole UK, and until the start of digital television services, Wenvoe's TV output was 625-lines on UHF only.

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
|-
|{{UK System I|ch=41}}
|41
|500
|[[ITV Wales & West|HTV Wales]]
|-
|{{UK System I|ch=44}}
|44
|500
|[[BBC1 Wales]]
|-
|{{UK System I|ch=47}}
|47
|500
|[[S4C]]
|-
|{{UK System I|ch=51}}
|51
|500
|[[BBC2 Wales]]
|}

===Analogue and digital television===

====15 November 1998 - 3 March 2010====
This was the initial roll-out for digital television using the [[DVB-T]] system. The transmitter frequencies and power outputs were chosen not to interfere with the UHF TV channels, but to be received with the same aerial-group. The QAM constellations and number of carriers were changed around 2002 after the collapse of [[ITV Digital]] as the service was taken over by the [[Freeview (UK)|Freeview]] consortium.

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
!{{no2}}System
|-
|{{UK DVB-T|ch=30}}
|30
|10
|[[BBC]] (Mux 1)
|[[DVB-T]]
|-
|{{UK DVB-T|ch=34}}
|34
|5
|[[Digital 3&4]] (Mux 2)
|DVB-T
|-
|{{UK DVB-T|ch=40|off=neg}}
|40-
|5
|[[S4C Digital Networks|SDN]] (Mux A)
|DVB-T
|-
|{{UK System I|ch=41}}
|41
|500
|[[ITV Wales & West|HTV Wales]]
|[[PAL]] System I
|-
|{{UK DVB-T|ch=43|off=neg}}
|43-
|5
|[[Arqiva]] (Mux C)
|DVB-T
|-
|{{UK System I|ch=44}}
|44
|500
|[[BBC1 Wales]]
|PAL System I
|-
|{{UK DVB-T|ch=46|off=neg}}
|46-
|5
|Arqiva (Mux D)
|DVB-T
|-
|{{UK System I|ch=47}}
|47
|500
|[[S4C]]
|PAL System I
|-
|{{UK DVB-T|ch=50|off=neg}}
|50-
|5
|BBC (Mux B)
|DVB-T
|-
|{{UK System I|ch=51}}
|51
|500
|[[BBC2 Wales]]
|PAL System I
|}

====3 March 2010 – 31 March 2010====
Analogue [[BBC Two Wales]] on channel 51 closed after 45 years of service, and [[HTV Wales]] was moved from channel 41 to that channel for what would be its final month of service.

Multiplex 1 from channel 30 was renamed BBC A and moved to channel 41+ (which had just been vacated by analogue HTV Wales). In addition to the power increase to 100&nbsp;kW ERP, it was reconfigured to 64QAM and 8k carriers, which resulted in a service area similar to the old analogue transmissions but with much more bandwidth available than Multiplex 1 ever had.

For the duration of the switchover, all the channels carried on Multiplex B were duplicated on this new PSB1 multiplex.

Channel 30 was re-used for Multiplex C, freeing Multiplex C's old allocation at channel 43-

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Service
!{{no2}}System
|-
|{{UK DVB-T|ch=30}}
|30
|5
|[[Arqiva]] (Mux C)
|DVB-T
|-
|{{UK DVB-T|ch=34}}
|34
|5
|[[Digital 3&4]] (Mux 2)
|DVB-T
|-
|{{UK DVB-T|ch=40|off=neg}}
|40-
|5
|[[S4C Digital Networks|SDN]] (Mux A)
|DVB-T
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100<ref>[http://www.ofcom.org.uk/tv/ifi/tech/dsodetails/wales_v3.pdf] {{webarchive|url=https://web.archive.org/web/20091117064726/http://www.ofcom.org.uk/tv/ifi/tech/dsodetails/wales_v3.pdf|date=November 17, 2009}}</ref>
|[[BBC]] A
|DVB-T
|-
|{{UK System I|ch=44}}
|44
|500
|[[BBC1 Wales]]
|PAL System I
|-
|{{UK DVB-T|ch=46|off=neg}}
|46-
|5
|Arqiva (Mux D)
|DVB-T
|-
|{{UK System I|ch=47}}
|47
|500
|[[S4C]]
|PAL System I
|-
|{{UK DVB-T|ch=50|off=neg}}
|50-
|5
|BBC (Mux B)
|DVB-T
|-
|{{UK System I|ch=51}}
|51
|500
|[[ITV Wales & West|HTV Wales]]
|PAL System I
|}

===Digital television===

====31 March 2010 - 27 April 2011====
All remaining analogue television was shut down after 40 years of service. The pre-switchover low-power digital transmissions (apart from Arqiva A and SDN) were upgraded to full power and configured to 64QAM and 8k carriers, with frequency changes and with new names for the multiplexes:

{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Operator
|-
|{{UK DVB-T|ch=30}}
|30
|10
|[[Arqiva]] A
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100
|[[BBC]] A
|-
|{{UK DVB-T|ch=44}}
|44
|100
|[[Digital 3&4]]
|-
|{{UK DVB-T|ch=47}}
|47
|100
|BBC B†
|-
|{{UK DVB-T|ch=49}}
|49
|50
|Arqiva B
|-
|{{UK DVB-T|ch=51}}
|51
|10
|[[S4C Digital Networks|SDN]]
|}

† High-definition channels; BBC One HD, BBC HD, ITV1 HD and S4C Clirlun using DVB-T2 transmission, coded with MPEG4 100&nbsp;kW ERP.

====27 April 2011 - 23 January 2013====
Unusually, the digital switchover at Wenvoe required a third phase to allow time for channels 42 and 45 to be cleared at [[Ridge Hill transmitting station|Ridge Hill]]. At this point, Arq A and SDN were shifted fully into the group with a power increase:
{| class="wikitable sortable"
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Operator
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100
|[[BBC]] A
|-
|{{UK DVB-T|ch=42|off=pos}}
|42+
|50
|[[S4C Digital Networks|SDN]]
|-
|{{UK DVB-T|ch=44}}
|44
|100
|[[Digital 3&4]]
|-
|{{UK DVB-T|ch=45}}
|45
|50
|[[Arqiva]] A
|-
|{{UK DVB-T|ch=47}}
|47
|100
|BBC B
|-
|{{UK DVB-T|ch=49}}
|49
|50
|Arqiva B
|}

====23 January 2013 - 10 December 2013====
As a side-effect of frequency-changes elsewhere in the region to do with clearance of the 800&nbsp;MHz band for [[4G]] mobile phone use,<ref>{{cite web|last=Summers |first=Nick |url=https://thenextweb.com/eu/2012/02/15/eu-states-must-allow-4g-internet-use-on-analogue-tv-spectrum-by-january-2013/ |title=EU States Must Allow 4G on Analogue TV Spectrum |publisher=Thenextweb.com |date=2012-02-15 |access-date=2013-05-28}}</ref> Wenvoe's "Arqiva B" multiplex was moved from channel 49 to channel 39.<ref>{{cite web|url=http://www.a516digital.com/p/4g-clearance-retunes.html |title=4G clearance retunes |publisher=a516digital |access-date=2013-05-28}}</ref> This was to allow channel 49 to be taken over at a future date by the [[Mendip transmitting station|Mendip]] transmitter.

{| class="wikitable sortable"
|-
!{{no2}}Frequency
!{{no2}}UHF
!{{no2}}kW
!{{no2}}Operator
|-
|{{UK DVB-T|ch=39}}
|39
|50
|Arqiva B
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100
|BBC A
|-
|{{UK DVB-T|ch=42|off=pos}}
|42+
|50
|SDN
|-
|{{UK DVB-T|ch=44}}
|44
|100
|Digital 3&4
|-
|{{UK DVB-T|ch=45}}
|45
|50
|Arqiva A
|-
|{{UK DVB-T|ch=47}}
|47
|100
|BBC B
|}

====10 December 2013 - 24 June 2020====
Following changes in the 700&nbsp;MHz Band on 15 May and 6 June 2019, the Arqiva COM7 multiplex is transmitted on UHF Channel 55 and the COM8 multiplex is on UHF Channel 56. These multiplexes carry additional HD services. The Local TV Multiplex is on UHF Channel 37 and commenced antenna tests around 1 December 2013.

{| class="wikitable sortable"
|-
!Frequency
!UHF
!kW  
!Operator
!System
|-
|{{UK DVB-T|ch=37}}
|37
|10
|Local TV
|[[DVB-T]]
|-
|{{UK DVB-T|ch=39}}
|39
|50
|[[Arqiva]] B
|DVB-T
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100
|[[BBC]] A
|DVB-T
|-
|{{UK DVB-T|ch=42|off=pos}}
|42+
|50
|[[S4C Digital Networks|SDN]]
|DVB-T
|-
|{{UK DVB-T|ch=44}}
|44
|100
|[[Digital 3&4]]
|DVB-T
|-
|{{UK DVB-T|ch=45}}
|45
|50
|Arqiva A
|DVB-T
|-
|{{UK DVB-T|ch=47}}
|47
|100
|BBC B
|[[DVB-T2]]
|-
|{{UK DVB-T|ch=55}}
|55
|40.7
|COM7
|DVB-T2
|-
|{{UK DVB-T|ch=56}}
|56
|40.7
|COM8
|DVB-T2
|}

====25 June 2020 - present====
Following changes in the 700&nbsp;MHz Band, on 22 June 2020, the Arqiva COM8 multiplex was switched off permanently on UHF Channel 56.<ref>{{cite web |title=Freeview multiplex turned off |url=https://rxtvinfo.com/2020/freeview-multiplex-turned-off |access-date=8 July 2020}}</ref>

{| class="wikitable sortable"
|-
!Frequency
!UHF
!kW  
!Operator
!System
|-
|{{UK DVB-T|ch=37}}
|37
|10
|Local TV
|[[DVB-T]]
|-
|{{UK DVB-T|ch=39}}
|39
|50
|[[Arqiva]] B
|DVB-T
|-
|{{UK DVB-T|ch=41|off=pos}}
|41+
|100
|[[BBC]] A
|DVB-T
|-
|{{UK DVB-T|ch=42|off=pos}}
|42+
|50
|[[S4C Digital Networks|SDN]]
|DVB-T
|-
|{{UK DVB-T|ch=44}}
|44
|100
|[[Digital 3&4]]
|DVB-T
|-
|{{UK DVB-T|ch=45}}
|45
|50
|Arqiva A
|DVB-T
|-
|{{UK DVB-T|ch=47}}
|47
|100
|BBC B
|[[DVB-T2]]
|-
|{{UK DVB-T|ch=55}}
|55
|40.7
|COM7
|DVB-T2
|}

===Analogue radio (VHF FM)===

====1956 - Winter 1981<ref>{{Cite web |url=http://www.bbceng.info/Eng_Inf/EngInf_7.pdf |title=Archived copy |access-date=2012-04-02 |archive-date=2009-01-06 |archive-url=https://web.archive.org/web/20090106072335/http://www.bbceng.info/Eng_Inf/EngInf_7.pdf |url-status=dead }}</ref>====
Wenvoe used a rather erratic set of frequencies at the start, bandplan changes agreed in 1978 were brought into play in 1981.

{| class="wikitable sortable"
!{{No2}}Frequency
!{{No2}}kW
!{{No2}}Service
|-
|89.95&nbsp;MHz
|113
|[[BBC Radio 2|BBC Light Programme]]
|-
|92.125&nbsp;MHz
|113
|[[BBC Radio 4|BBC Home Service (West)]]
|-
|94.3&nbsp;MHz
|113
|[[BBC Radio 4|BBC Welsh Home Service]]
|-
|96.8&nbsp;MHz
|113
|[[BBC Radio 3|BBC Third Programme]]
|}

====Present====
BBC Radio 1, BBC Radio 2, BBC Radio 3, BBC Radio 4 and Classic FM broadcasts from Wenvoe are intended to be for South Wales and the West Country, though the signal reaches much further due to the high ERP and use of omni-directional antenna systems.

Radio Cymru and Radio Wales have the same radiation pattern but different effective radiated powers. Radio Wales has a lower ERP to prevent it interfering with [[Radio Cornwall|BBC Radio Cornwall]] on the same frequency. There is overspill allowing stereo listening for R. Wales & R. Cymru in the West Country.

Nation Radio is broadcast at low power to ensure sufficient penetration of Cardiff, Newport and Bridgend. There is some overspill into Bristol and the West Country, though service quickly drops off after Bristol.
{| class="wikitable sortable"
|-
!Frequency
!ERP (kW)
!Service
!Radiation Pattern
!Coverage
|-
|89.9&nbsp;MHz
|250.00
|[[BBC Radio 2]]
|N/A
|[http://a-bc.co.uk/MCA/BBC000002-ST11067415.html MCA Map]
|-
|92.1&nbsp;MHz
|250.00
|[[BBC Radio 3]]
|N/A
|[http://a-bc.co.uk/MCA/BBC000003-ST11067415.html MCA Map]
|-
|94.3&nbsp;MHz
|250.00
|[[BBC Radio 4]]
|N/A
|[http://a-bc.co.uk/MCA/BBC000004-ST11067415.html MCA Map]
|-
|96.8&nbsp;MHz
|250.00
|[[BBC Radio Cymru]]
|[https://fmscan.org/power.png.php?i=2800849 Data]
|[http://a-bc.co.uk/MCA/BBC000009-ST11067415.html MCA Map]
|-
|99.5&nbsp;MHz
|250.00
|[[BBC Radio 1]]
|[https://fmscan.org/power.png.php?i=2801107 Data]
|[http://a-bc.co.uk/MCA/BBC000001-ST11067415.html MCA Map]
|-
|101.7&nbsp;MHz
|250.00
|[[Classic FM (UK)|Classic FM]]
|N/A
|[http://a-bc.co.uk/MCA/AN000001-ST11067415.html MCA Map]
|-
|103.9&nbsp;MHz
|40.00
|[[BBC Radio Wales]]
|[https://fmscan.org/power.png.php?i=2801346 Data]
|[http://a-bc.co.uk/MCA/BBC000008-ST11067415.html MCA Map]
|-
|106.8&nbsp;MHz
|4.54
|[[Nation Radio Wales]]
|[https://fmscan.org/power.png.php?i=2801825 Data]
|[http://a-bc.co.uk/MCA/AL000327-ST11067415.html MCA Map]
|}

===Digital Radio (DAB)===
Digital Radio is transmitted from Wenvoe at high power and is designed to cover South Wales and the West Country.
{| class="wikitable sortable"
|-
!Frequency<ref>{{cite web | url = https://www.ofcom.org.uk/__data/assets/file/0018/91305/TxParamsDAB.csv | title = TxParams DAB data | date = 2020-04-03 | website = [[Ofcom]] | access-date = 2020-04-10}}</ref>
!Block
!kW
!Operator
|-
|216.920&nbsp;MHz
|11A
|8.795
|[[Sound Digital]]
|-
|222.064&nbsp;MHz
|11D
|9.000
|[[Digital One]]
|-
|225.648&nbsp;MHz
|12B
|8.000
|[[BBC National DAB]]
|-
|227.360&nbsp;MHz
|12C
|3.820
|[[South East Wales]]
|}

==See also==
*[[Radio masts and towers]]
*[[List of masts]]
*[[List of tallest buildings and structures in Great Britain]]

==References==
{{Reflist}}

==External links==
*[http://tx.mb21.co.uk/info/405/bbc/#bbc_wales MB21's page on BBC 405 TV to Wales and the West]
*[http://www.bvws.org.uk/405alive/info/tx_list.html 405 Alive's list of transmitters"]
*[https://web.archive.org/web/20120308050124/http://www.pembers.freeserve.co.uk/405-Lines/tx-list.html#BBC More details on 405-line BBC transmitters]
*[http://downloads.bbc.co.uk/rd/pubs/archive/pdffiles/engineering/bbc_engineering_99.pdf "Wenvoe - the BBC's Largest Television Station" by A.E Gallon, pp4-9. (A history of Wenvoe up to 1970)]
*[http://tx.mb21.co.uk/gallery/wenvoe/index.php The Transmission Gallery: Photographs and Information] {{Webarchive|url=https://web.archive.org/web/20071113073610/http://tx.mb21.co.uk/gallery/wenvoe/index.php |date=2007-11-13 }}
*[http://tx.mb21.co.uk/gallery/wenvoe/maps.php The Transmission Gallery: Television Coverage Map]
*[http://downloads.bbc.co.uk/rd/pubs/reports/1964-43.pdf BBC Report 1964-43: Coverage of the Band I and Band II services]
*[http://tx.mb21.co.uk/mapsys/fm/wenvoe.php The Transmission Gallery: FM Coverage Map]

{{Television in Wales}}
{{Transmitter sites in Wales}}
{{FM radio transmitter sites in Wales}}
{{Television transmitters in the UK}}
{{Wenvoe VHF 405-line Transmitter Group}}
{{Wenvoe UHF 625-line Transmitter Group}}
{{Wenvoe UHF DVB Transmitter Group}}
{{Vale of Glamorgan}}

[[Category:Transmitter sites in Wales]]
[[Category:Wenvoe VHF 405-line Transmitter Group]]
[[Category:Wenvoe UHF 625-line Transmitter Group]]
[[Category:Buildings and structures in the Vale of Glamorgan]]