Freeview Light on the Cwm Twrch (Powys, Wales) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 51.780,-3.799 or 51°46'49"N 3°47'56"W |  | SA9 2TU |
The symbol shows the location of the Cwm Twrch (Powys, Wales) transmitter which serves 2,100 homes. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.
Are there any planned engineering works or unexpected transmitter faults on the Cwm Twrch (Powys, Wales) mast?
Cwm Twrch transmitter - Cwm Twrch transmitter: Possible effect on TV reception week commencing 18/11/2024 Screen may go black on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
H/V: aerial position (horizontal or vertical)
The Cwm Twrch (Powys, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: U&Yesterday, 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, DMAX, E4 Extra, YAAAS!, Film4 +1, Food Network, FRANCE 24 (in English), GREAT! action, GREAT! christmas, GREAT! movies, GREAT! romance mix, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, That's 90s, That's TV 2, Together TV, TRUE CRIME, TRUE CRIME XTRA, U&Dave, U&Dave ja vu, U&Drama +1, U&W.
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.
Which Freeview channels does the Cwm Twrch transmitter broadcast?
If you have any kind of Freeview fault, follow this Freeview reset procedure first.Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
| Mux | H/V | Frequency | Height | Mode | Watts |
| PSB1 BBCA | V max | C24 (498.0MHz) | 159m | DTG- | 3W |
 1 BBC One (SD) Wales, 2 BBC Two Wales, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 14 others | |||||
| PSB2 D3+4 | V max | C21+ (474.2MHz) | 159m | DTG- | 3W |
 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Wales), 71 That’s 60s, | |||||
| PSB3 BBCB | V max | C27 (522.0MHz) | 159m | DTG- | 3W |
 46 5SELECT, 101 BBC One HD Wales, 102 BBC Two HD Wales, 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 110 Channel 4 HD (Wales), 204 CBBC HD, 205 CBeebies HD, plus 1 others | |||||
Are you trying to watch these 44 Freeview channels?
The Cwm Twrch (Powys, Wales) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: U&Yesterday, 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, DMAX, E4 Extra, YAAAS!, Film4 +1, Food Network, FRANCE 24 (in English), GREAT! action, GREAT! christmas, GREAT! movies, GREAT! romance mix, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, That's 90s, That's TV 2, Together TV, TRUE CRIME, TRUE CRIME XTRA, U&Dave, U&Dave ja vu, U&Drama +1, U&W.
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.
Which BBC and ITV regional news can I watch from the Cwm Twrch transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 50km southeast (129°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 51km southeast (135°)
to ITV Wales region - 206 masts.
How will the Cwm Twrch (Powys, Wales) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 31 Dec 2019- | |||||
| A K T | A K T | A K T | A K T | A K T | |||||
| C21 | BBC1waves | BBC1waves | BBC1waves | +D3+4 | D3+4 | ||||
| C24 | ITVwaves | ITVwaves | ITVwaves | BBCA | BBCA | ||||
| C27 | BBC2waves | BBC2waves | BBC2waves | BBCB | BBCB | ||||
| C31 | C4waves | C4waves | C4waves |
tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 26 Aug 09 and 23 Sep 09.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 16W | |
| BBCA, D3+4, BBCB | (-7dB) 3.2W |
Which companies have run the Channel 3 services in the Carmel transmitter area
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Sunday, 16 October 2011
I
Iona Price10:39 AM
I have no digital signal on any of my four freeview box tv's.
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K
KMJ,Derby1:52 PM
Iona Price: Dont worry, there is a fault causing loss of transmission from Cwm Twrch and Ystalyfera. The BBC are aware that service was lost at 00.56, but no time is shown for expected resumption of service.
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Monday, 16 April 2018
MikeP
12:35 PM
12:35 PM
Kerry Beck:
It is operated by Arqiva and is nothing to do with this independent website that offers reception advice.
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Thursday, 7 November 2024
Transmitter engineering
11:20 AM
11:20 AM
CWM TWRCH transmitter - Freeview: Off the air due to essential engineering from 7 Nov 11:00. . [BBC]
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Transmitter engineering
2:20 PM
2:20 PM
CWM TWRCH transmitter - Freeview: Off the air due to essential engineering from 7 Nov 11:00 until 7 Nov 11:03. . [BBC]
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Monday, 18 November 2024
Transmitter engineering
10:48 AM
10:48 AM
Cwm Twrch transmitter - Cwm Twrch transmitter: Possible effect on TV reception week commencing 18/11/2024 Screen may go black on some or all channels [DUK]
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