Cilfrew television relay station
Cilfrew television relay station is sited on a hill south of the village of Tonna, at least 2 km across the valley from Cilfrew in the Neath Valley. It was originally built in 1981[1] as a fill-in relay for UHF analogue colour television serving the villages of Cilfrew itself, Aberdulais and Tonna. It consists of a 30 m self-supporting lattice mast standing on land which is itself about 80 m above sea level. The transmissions are beamed to the north. The Cilfrew transmission station is owned and operated by Arqiva.
Cilfrew transmitter re-radiates the signal received off-air from Kilvey Hill about 12 km to the southwest. When it came, the digital switchover process for Cilfrew duplicated the timing at the parent station, with the first stage taking place on Wednesday 12 August 2009 and the second stage was completed on Wednesday 9 September 2009, with the Kilvey Hill transmitter-group becoming the first in Wales to complete digital switchover. After the switchover process, analogue channels had ceased broadcasting permanently and the Freeview digital TV services were radiated at an ERP of 3 W each.[2]
Channels listed by frequency
Analogue television
September 1981 - 1 November 1982
1 November 1981 - 12 August 2009
When Channel 4 launched in 1982, Cilfrew (being in Wales) transmitted the S4C variant.
Analogue and digital television
12 August 2009 - 9 September 2009
The UK's digital switchover commenced at Kilvey Hill (and therefore at Cilfrew and all its other relays) on 12 August 2009. Analogue BBC Two Wales on channel 45 was first to close, and ITV Wales was moved from channel 49 to channel 45 for its last month of service. Channel 49 was replaced by the new digital BBC A mux which started up in 64-QAM and at full power (i.e. 3 W).
Frequency |
UHF |
kW |
Service |
System |
615.25 MHz |
39 |
0.015 |
BBC One Wales |
PAL System I |
663.25 MHz |
45 |
0.015 |
ITV1 Wales |
PAL System I |
698.000 MHz |
49 |
0.003 |
BBC A |
DVB-T |
719.25 MHz |
52 |
0.015 |
S4C |
PAL System I |
Digital television
9 September 2009 - present
The remaining analogue TV services were closed down and the digital multiplexes took over on two of the original analogue channels' frequencies, BBC B being given the new allocation of channel 42.
Frequency |
UHF |
kW |
Operator |
642.000 MHz |
42 |
0.003 |
BBC B |
666.000 MHz |
45 |
0.003 |
Digital 3&4 |
698.000 MHz |
49 |
0.003 |
BBC A |
13 March 2013
As a side-effect of frequency-changes elsewhere in the region to do with clearance of the 800 MHz band for 4G mobile phone use,[3] Cilfrew's "BBC A" multiplex will have to be moved from channel 49 to channel 39.[4]
Frequency |
UHF |
kW |
Operator |
618.000 MHz |
39 |
0.003 |
BBC A |
642.000 MHz |
42 |
0.003 |
BBC B |
666.000 MHz |
45 |
0.003 |
Digital 3&4 |
References
External links
Transmitter sites in Wales |
---|
| Transmitter stations | |
---|
|
Wenvoe UHF 625-line Transmitter Group |
---|
| Transmitter stations |
- Aberbeeg
- Abercynon
- Aberdare
- Abergavenny
- Abertillery
- Abertridwr
- Alltwen
- Bargoed
- Bedlinog
- Blackmill
- Blaenau Gwent
- Blaenavon
- Blaenllechau
- Blaina
- Brecon
- Briton Ferry
- Burry Port
- Caerhendy
- Cilfrew
- Clydach
- Clyro
- Craig-Cefn-Parc
- Crickhowell
- Crucorney
- Crumlin
- Cwm Ffrwd-Oer
- Cwmafon
- Cwmaman
- Cwmfelinfach
- Deri
- Dowlais
- Ebbw Vale
- Ebbw Vale South
- Efail Fach
- Ferndale
- Fernhill
- Gelli-fendigaid
- Gilfach
- Kilvey Hill
- Llanfach
- Llanfoist
- Llangeinor
- Llanharan
- Llanhilleth
- Llyswen
- Machen Upper
- Machen Upper
- Maesteg
- Merthyr Tydfil
- Monmouth
- Mynydd Bach
- Mynydd Machen
- Nant-y-Moel
- Nantyglo
- Neath Abbey (H)
- Neath Abbey (V)
- Ogmore Vale
- Pennar
- Pennorth
- Penrhiwceiber
- Pontardawe
- Pontypool
- Pontypridd
- Porth
- Rhondda A
- Rhondda B
- Rhondda Fach
- Rhymney
- Risca
- Sennybridge
- South Maesteg
- South Tredegar
- Taffs Well
- Ton Pentre
- Tonypandy
- Tonyrefail
- Trebanog
- Trecastle
- Trefechan
- Treharris
- Tynewydd
- Upper Killay
- Usk
- Van Terrace
- Wattsville
- Ynys Owen
|
---|
|
Television transmitter and major relay sites in the United Kingdom |
---|
| England | East | |
---|
| East Midlands | |
---|
| Greater London | |
---|
| North East | |
---|
| North West | |
---|
| South East | |
---|
| South West | |
---|
| West Midlands | |
---|
| Yorkshire and the Humber | |
---|
|
---|
| Scotland | |
---|
| Wales | |
---|
| Northern Ireland | |
---|
| Italics denotes a transmitter no longer used for transmitting television signals. |
|