Freeview Light on the Treharris (Merthyr Tydfil, Wales) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 51.659,-3.298 or 51°39'33"N 3°17'53"W |  | CF46 5LJ |
The symbol shows the location of the Treharris (Merthyr Tydfil, Wales) transmitter which serves 4,700 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.
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Treharris (Merthyr Tydfil, Wales) transmitter._______
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 Treharris (Merthyr Tydfil, 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 Treharris 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 | C40 (626.0MHz) | 208m | DTG- | 10W |
 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 | C43 (650.0MHz) | 208m | DTG- | 10W |
 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 | C46 (674.0MHz) | 208m | DTG- | 10W |
 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 Treharris (Merthyr Tydfil, 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 Treharris transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 19km south-southeast (166°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 22km south (176°)
to ITV Wales region - 206 masts.
How will the Treharris (Merthyr Tydfil, Wales) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2010 | 2010-13 | 15 May 2019 | |||||
| C/D E | C/D E | C/D E | C/D E T | B E K T | |||||
| C40 | BBCA | ||||||||
| C43 | D3+4 | ||||||||
| C46 | BBCB | ||||||||
| C48 | BBC2waves | BBC2waves | BBC2waves | D3+4 | |||||
| C52tv_off | ITVwaves | ITVwaves | ITVwaves | BBCA | |||||
| C56tv_off | BBC1waves | BBC1waves | BBC1waves | BBCB | |||||
| C68 | 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 3 Mar 10 and 31 Mar 10.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 50W | |
| BBCA, D3+4, BBCB | (-7dB) 10W |
Which companies have run the Channel 3 services in the Wenvoe transmitter area
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Thursday, 26 April 2012
W
W L PENDER1:57 PM
Salisbury
A system retune has restored service to 'Film 4' and 'Yesterday' channels on one set, but with distorted and fragmented reception on another set (from a different aerial) within the same house. All other channels on this second set are working perfectly.
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W's: mapW's Freeview map terrainW's terrain plot wavesW's frequency data W's Freeview Detailed Coverage
W L PENDER: What transmitter are you using?
Digital UK suggests Salisbury may be the best. However, Rowridge is also good and only 30 degrees away from Salisbury at your location.
My guess is that the TV with issues is tuned to Rowridge instead of Salisbury.
Fortunately Rowridge uses low channels and Salisbury high ones, so (if you are on Salisbury) then run the automatic tuning scan with the aerial unplugged up to 50% in order to avoid Rowridge but get Salisbury.
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M
Mike Dimmick6:40 PM
Kevin: No transmitters are being taken down that have already switched over.
There are a few transmitters which have closed at switchover, but only if they were being replaced or the service they carried was removed. Three BBC One Wales/S4C transmitters in north-east Wales (Flint, Bagillt and Holywell were replaced by much better services from the Storeton transmitter (which is in England, on the Wirral peninsula). Three ITV1-only relays in north Hampshire were switched off completely as they were there to provide the Meridian Southampton service to viewers who would otherwise get best reception from Hannington, which used to provide the Meridian West, later ITV Thames Valley, service. That service closed and merged into Meridian Southampton in 2009.
There have also been a couple of closures in Dundee (Camperdown) and on the Wirral (Bidston), due to the buildings that the relays were erected on being demolished. In both cases, new relays (Dundee Menzieshill, Sunningdale) have been erected on nearby buildings.
I don't know whether the broadcasters will re-evaluate the coverage of all the relays at any point, and decide to shut some down. Treharris was predicted to cover 4,700 homes which couldn't get even one of the commercial multiplexes from Wenvoe or Pontypool; it also feeds the Abercynon transmitter which covers 2,300 households. The cut-off for erecting a relay used to be 500 households.
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Wednesday, 3 April 2019
How long will the Treharris transmitter be off today
while work is being carried out.
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S
StevensOnln112:54 PM
Avril Rickards: They never announce how long the work will take, but it will almost certainly be complete by the end of the day as engineers don't tend to like working up a mast in the dark. Do not attempt to retune.
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