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, 15 February 2011
P
Paul9:11 AM
Pontyclun
Briantist.
Have done some checking around by me and it look's like for some reason my problem is that I'm not only missing Sky News but everything on MUX COM4 SDN. I just did a retune and it detected 8 carriers not 9 and the above is missing from me and others by me
cheers
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Paul's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Paul: You either receive a multiplex or not, you can't receive a bit of it, that is impossible.
Have you done this - My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | ukfree.tv - independent free digital TV advice ?
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P
Paul7:15 PM
Briantist: Sorry my bad I am not able to receive any of the channels from COM5 ArqA which is sky3, Dave, Dave ja vu, E4+1, price-drop tv, sky 3+1, sky news,
cheers
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Paul: It's back to Single frequency interference | ukfree.tv - independent free digital TV advice again. Did you do the above procedure?
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Thursday, 17 February 2011
P
Paul8:23 AM
Pontyclun
Briantist: Yes I did the above procedure but alas no joy.
Thank you very much for your help, I'm going to give it a miss for a while to see if it will sort it's self out on its own. But I will say this, Ive only had this problem since I was able to pick up Ch4 HD. lol
cheers
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Paul's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Wednesday, 2 March 2011
Hi Brian,
Yesterday I received notice from Digital UK that the frequency changes you mention above will happen on 27th April, Channels on 51 will move to 42 & channels on 30 will move to 45 bringing Wenvoe firmly into group B .
The event description is "COM mux power up & frequency change" but it neglects to mention what the erp will be for these mux's after this retune.
Mark Aberfan Aerials
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Mark Aberfan Aerials: I'll change the note. I presume they will go to 50kW.
Also, Ofcom have it listed as C42+ for COM4.
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Sunday, 20 March 2011
M
Marc Howells5:05 PM
Hengoed
I'm currently receiving my freeview signal from the mynydd bach transmitter. My post code is CF82 7DR. I've been experimenting with an aerial in the loft and tried to pick up wenvoe. I've successfully picked up channels 41, 44 and 49. The digital uk website suggested I wouldn't pick up 49 until next year so that was a surprise. If I change my aerial should I be able to pick up the other muxes? Thanks Marc.
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Marc's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
K
KMJ,Derby8:16 PM
Marc Howells: On 27th April 2011 Mux SDN changes frequency to C42+ and Mux ArqA to C45. The digital UK postcode checker shows you should have good reception of those two muxes from that date. As you say reception of C49 is expected to improve in 2012. A group B aerial will give the best pick up of the Wenvoe frequencies after 27th April.
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Sunday, 17 April 2011
Hi Brian, I believe your current Cxx listings for ARQA and SDN are based on the future plans which should come into play on the 27th April from what I can tell.
At the moment, ARQA is on C30 at 10kw and SDN is on C51 also at 10kw. Fingers crossed when they move to their bumped strengths, my little indoor powered aerial in CF10 will have a bit more luck with them. The joys of city centre living, 5 storeys up but no central aerials in the buildings!
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Jay's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
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