Full Freeview on the Wenvoe (Cardiff, Wales) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 51.460,-3.282 or 51°27'35"N 3°16'57"W |  | CF5 6SA |
The symbol shows the location of the Wenvoe (Cardiff, Wales) transmitter which serves 360,000 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 Wenvoe (Cardiff, Wales) mast?
Wenvoe transmitter - Wenvoe transmitter: Possible effect on TV reception week commencing 11/11/2024 Pixelation or flickering 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.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Wenvoe 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.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Wenvoe transmitter?
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 6km northeast (42°)
to BBC Wales region - 206 masts.
ITV Cymru Wales 1.2m homes 4.7%
from Cardiff CF5 6XJ, 1km east-northeast (74°)
to ITV Wales region - 206 masts.
Are there any self-help relays?
| Abergwesyn | Active deflector | 7 km N Llanwrtyd Wells | 20 homes |
| Barry | Transposer | 10 km SW city centre | 300 homes |
| Celtic Manor | Transposer | 5 km E Newport | 80 homes |
| Pentrebach | Transposer | 3 km S Merthyr Tydfil | 100 homes |
| Ystradfellte | Active deflector | 30 km NE Port Talbot | 20 homes |
How will the Wenvoe (Cardiff, Wales) transmission frequencies change over time?
| 1950s-80s | 1984-97 | 1997-98 | 1998-2010 | 2010-13 | 2013-18 | 2013-17 | 15 May 2019 | ||
| VHF | B E T | B E T | B E T | B E T | B E K T | W T | W T | ||
| C5 | BBCtvwaves | ||||||||
| C30 | LOCAL2 | ||||||||
| C31 | com7 | com7 | |||||||
| C37 | com8 | com8 | |||||||
| C39 | +ArqB | +ArqB | ArqB | ||||||
| C41 | ITVwaves | ITVwaves | ITVwaves | +BBCA | +BBCA | +BBCA | BBCA | ||
| C42 | +SDN | +SDN | +SDN | SDN | |||||
| C44 | BBC1waves | BBC1waves | BBC1waves | D3+4 | D3+4 | D3+4 | D3+4 | ||
| C45 | +ArqA | +ArqA | +ArqA | ArqA | |||||
| C47 | C4waves | C4waves | C4waves | BBCB | BBCB | BBCB | BBCB | ||
| C49tv_off | +ArqB | ||||||||
| C51tv_off | BBC2waves | BBC2waves | BBC2waves | LCF | LCF | ||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | COM8tv_off |
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 | 500kW | |
| BBCA, D3+4, BBCB | (-7dB) 100kW | |
| com8 | (-9.7dB) 53.2kW | |
| SDN, ARQA, ARQB | (-10dB) 50kW | |
| com7 | (-10.3dB) 47kW | |
| Mux 1*, LCF | (-17dB) 10kW | |
| Mux 2*, Mux A*, Mux B*, Mux C*, Mux D* | (-20dB) 5kW |
Which companies have run the Channel 3 services in the Wenvoe transmitter area
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Tuesday, 31 October 2017
M
MikeB9:24 PM
Rita Lee: look at the top of the page - the transmitter doesn't seem to have any problems.
So if you ask your neighbours, and they dont have a problem, then its you. Check your cables, and it still doesn't cure the problem, then you need to call a professional.
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Wednesday, 1 November 2017
MikeP
6:35 PM
6:35 PM
Rita Lee:
From The Wrekin pages today
"This is very likely caused by the high atmospheric pressure affecting various parts of the country, causing lift conditions which allow signals from distant transmitters which cannot normally be received to interfere with the signals from the transmitter you normally use. Do not attempt to retune as this will delete all of your channels which are already correctly tuned. As this is an entirely natural phenomenon, all you can do is wait for the atmospheric conditions to return to normal."
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Wednesday, 20 December 2017
I have got a website about the Wenvoe. It's on Welcome!
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TransmittersInUK's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
The Freeview channels get much further out than the map suggests. You can receive the Wenvoe's frequency's in St. Davids.
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TransmittersInUK's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
Saturday, 28 July 2018
P
Peter Gwenlan9:16 AM
Caerphilly
Seems to be a problem with the Wenvoe transmitter this morning (28th) on Multiplex COM7. All channels on this multiplex are missing. Other channels seem ok.
I'm in CF83 2JX
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Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
S
StevensOnln110:53 AM
Peter Gwenlan: I receive COM7 from Wenvoe and have just checked and it's coming in fine here (I'm much further away than you in an area where reception of Wenvoe is sometimes a bit marginal). Have you checked for any loose or damaged cables or connections behind your TV?
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P
Peter Gwenlan5:28 PM
Hi @StevensOnln1, yes I checked all that. As it happens, they all came back this afternoon. I did several retune's, and eventually they returned. Probably due to the unusual spell of wet weather!
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S
StevensOnln16:55 PM
Peter Gwenlan: Retuning is never recommended when channels are suddenly lost as they will just be deleted and searched for again, when they are already correctly tuned to begin with.
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Wednesday, 10 April 2019
S
Stephen Pemberton4:29 PM
I've been advised that Channels 37 and 31 will be moved to Channels 56 and 55. This is surprising given the intention to release high frequencies for 5G mobile. Can you confirm ?
Thanks
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S
StevensOnln16:28 PM
Stephen Pemberton: That is correct, the same change has already taken place at various other transmitters. COM7 & COM8 are moving to form single frequency networks (SFNs) on UHF channels 55 & 56 which form the centre gap of the new 700MHz mobile band which is due to be auctioned off next year to be used for 5G services by the mobile networks. Ofcom have announced that the centre gap will be used to provide additional downlink capacity but don't expect this to come into use straight away, therefore COM7 & COM8 will be allowed to remain on UHF 55 & 56 until whichever mobile networks buy the centre gap SDL spectrum in the auction are ready to bring it into use (at which point COM7 & COM8 will close). This allows COM7 & COM8 to keep broadcasting for longer, without taking up any frequency allocation in the remaining DTT spectrum. See the Ofcom link below for further details.
Maximising the benefits of 700MHz clearance - Ofcom
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