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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Monday, 30 May 2011
K. Phillips: Channel 4 HD is not provided in Wales, you have S4C HD.
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Saturday, 18 June 2011
D
David Carton12:14 PM
Bristol
Hi for the last 3-4 weeks I've lost all my bbc radio stations on the freeview tv I have in my kitchen. The same happened temporarily on my main TV, and bedroom but a retune sorted that. I've retuned this unit numerous times, and each time it gets to channel 61 it shows them all being picked up, but when the retune finishes they are not there.
Any ideas it has worked fine up until now?
Dave
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David's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Monday, 20 June 2011
S
Sarah5:57 PM
For the past week the audio on freeview has dropped considerably, I am served by wenvoe and i am only 2 miles away from the mast... Is there a reason for this? I am using BT Vision, my tv is 6 months old and the aerial is 3 years old.
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Tuesday, 12 July 2011
P
Paul12:04 AM
Cardiff
hello, I am having problems receiving COM6 channels. I live in CF15 7PL, the channels did appear for a few days/week when the Wenvoe transmitter boosted it's power to 50kWatts for Com6, back in May I believe. But now the channels have dropped back out, any ideas.
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Paul's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
K
KMJ,Derby8:45 AM
Paul: The Digital UK postcode checker predicts (reasonably) good reception on all six muxes from Wenvoe at your location. Check that your cables and connectors are all in good order, also check for single frequency interference, that is if any VCR or Sky box has the RF modulator set around C49. It is possible that trees in leaf growing in the signal path are obstructing the signal at this time of the year. Using a good quality group B receiving aerial will give more gain than a similar size of wideband aerial on the Wenvoe frequencies.
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Wednesday, 13 July 2011
P
Paul9:03 AM
Cardiff
Thanks for the reply KMJ,Derby will look into it. Just strange that it worked for a week or so and then dropped out. I don't have a VCR close to my Philips Freeview box only a DVD player which I took out of the equation whilst trying to fix the fault.. and use a wideband aerial which we got when the transmitter switched over... could I be getting interference from the Taffs Well relay transmitter? But that doesn't transmit the COM6 range. Could well be that it's summer and the trees are playing a part...as we in a valley over a hill from Wenvoe.. will heck with some neighbours who are also trying to pick-up Wenvoe.
cheers
Paul
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Paul's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Sunday, 17 July 2011
David Carton: Please can you see the Single frequency interference | ukfree.tv - independent free digital TV advice page?
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Sarah: Please can you see the Freeview reception has changed? | ukfree.tv - independent free digital TV advice page?
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P
PaulS8:15 PM
Sarah: Just a thought. Do you use a SCART to connect to the TV? If so remove (both ends) and re-plug. If it's been knocked and is partially seated you can sometimes experience loss of sound or colours (depending upon which bit is making a poor connection). If you have an alternative SCART cable try that as well if simple reseating doesn't work.
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Thursday, 28 July 2011
J
julie12:17 PM
Hi my postcode is cf83, My closest mast is machen but been told it is not in reciept of all free view channels, so i have atempted to face another area possible pick up wenvoe.I have a number of channels from various multiplexs(no channels from c or d) my aerials are on the roof and are apparently good ones and freeview is built in to the tvs. one tv is straight to the aerial and two tvs are run off the other aerial using a booster box all tvs have same channels done all checks but still not recieving all channels,why is this?
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