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Full Freeview on the Wenvoe (Cardiff, Wales) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.460,-3.282 or 51°27'35"N 3°16'57"Wsa_postcodeCF5 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 27/05/2024 Pixelation or flickering on some or all channels Digital tick

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

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.

 H max
C41+ (634.2MHz)384mDTG-100,000W
Channel icons
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

 H max
C44 (658.0MHz)384mDTG-100,000W
Channel icons
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),

 H max
C47 (682.0MHz)384mDTG-100,000W
Channel icons
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

 H -3dB
C42+ (642.2MHz)384mDTG-850,000W
Channel icons
 E4 (Wales), 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 H -3dB
C45+ (666.2MHz)384mDTG-850,000W
Channel icons
11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H -3dB
C39+ (618.2MHz)384mDTG-850,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

 H -10dB
C37 (602.0MHz)384mDTG-1210,000W
Channel icons
from 22nd September 2014: 8 Made in Cardiff,

DTG-8 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?

regional news image
BBC Wales Today 1.2m homes 4.7%
from Cardiff CF5 2YQ, 6km northeast (42°)
to BBC Wales region - 206 masts.
regional news image
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?

AbergwesynActive deflector7 km N Llanwrtyd Wells20 homes
BarryTransposer10 km SW city centre300 homes
Celtic ManorTransposer5 km E Newport80 homes
PentrebachTransposer3 km S Merthyr Tydfil100 homes
YstradfellteActive deflector30 km NE Port Talbot20 homes

How will the Wenvoe (Cardiff, Wales) transmission frequencies change over time?

1950s-80s1984-971997-981998-20102010-132013-182013-1715 May 2019
C39 +ArqB+ArqBArqB

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

Jan 1958-Jul 1968Television Wales and the West
Jul 1968-Feb 2004Harlech Television
Feb 2004-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Wenvoe was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Wednesday, 22 March 2017
8:57 PM

Living in Llantwit Fardre. Got home around 7pm to find intermittent signal. Freeview TV in bedroom down, as is main TV in living room which takes Talk Talk TV. Don't know where my aerial is and don't know whether neighbourd have similar issue. Cheers.

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Mark's 1 post GB flag
Thursday, 23 March 2017
Transmitter engineering

4:33 AM

WENVOE transmitter - Freeview: HD Digital TV Off Air from 19:59 on 21 Mar to 20:03 on 21 Mar. [BBC]

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Transmitter engineering's 151,731 posts xx flag
Sunday, 7 May 2017
Guy Richards
10:07 PM

Sunday 7 May, signal from Wenvoe has fallen to barely 50 per cent. I'm in nort Cardiff, anyone else with the same issue?

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Guy Richards's 1 post GB flag
Thursday, 15 June 2017
3:06 PM

I am using an old "One for All" indoor aerial with a Toshiba Digital TV in our Summer House in the back garden.
We are in Rhiwbina, problems in the house with TV reception from the normal aerial..
Is there. a Problem for reception here for indoor aerials...???.....the only way I can get any channels is to hang the the aerial out through the is fine then.
Any advice...???.....maybe invest in a modern indoor aerial..???

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Phil's 1 post GB flag

3:45 PM

Phil: Indoor aerials only work well in places that have a strong signal to begin with. Using one at ground floor level will never produce the same results as a roof (or loft) mounted aerial as there will be less signal due to obstructions such as the surrounding buildings and trees etc (and signals reflecting off the same cancelling out the wanted signals) which are less of a problem at roof height. Also, a lot of indoor aerials are poorly designed and are little more than a piece of wire sticking out of an amplifier. The best type to try are ones that look like a smaller version of a rooftop aerial, or even consider mounting a small rooftop aerial on your summer house.

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StevensOnln1's 3,639 posts GB flag

6:37 PM


Further to that said by StevensOnln1, I concur that 'indoor' aerials are not at all effective unless you are very close to a powerful transmitter. Years of TV field servicing experience suggests they are never a good solution.

One alternative is to have an active splitter added into your existing aerial signal feed and an additional coaxial cable run from that to your Summer House, bearing in mind that aerial cables are not designed to be suspended or buried. So if it crosses 'open space' you will need either supporting wires to 'hang' it from or sealed circular trunking below ground for it to fed through. Or else have a new aerial fitted where it can receive a good and stable signal.

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MikeP's 3,056 posts GB flag
Wednesday, 26 July 2017
4:33 PM

Np12 1dh

When will Blackwood area be able to watch all the freeview channels instead of the handful currently available to us. It seems so unfair that we pay the same license fee but have only a fraction of channels available. I understood that when digital had been rolled out to the whole country, the signals would be boosted to give the wider choice to everyone but this hasn't materialised.

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Pam's 1 post GB flag
Pam's: ...
Thursday, 27 July 2017

10:30 AM


Cwmfelinfach is a Freeview Lite transmitter and, as with all such, there is no plan for any further channels to be made available. This is an entirely commercial descision by the non-PSB broadcasters. They have to cover their costs, of transmitting programmes, from the advertising revenue they try to attract. If the audience is too small to interest the advertisers, as with most/all Freeview Lite transmitters, then there is no attraction to pay to provide those extra channels.

It has nothing to do with paying for a TV Licence as that is required to receive any available channels being broadcast or via the BBC iPlayer.

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MikeP's 3,056 posts GB flag
Tuesday, 31 October 2017
Rita Lee
8:44 PM

31. 10 .2017....... most of the day we have had very little t.v reception, this evening ...NO t.v at all , have done all the required checks only to get service not available come up, will this be an on-going thing ?

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Rita Lee's 1 post GB flag

9:24 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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MikeB's 2,579 posts GB flag
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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