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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 20/05/2024 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.

Sunday, 17 July 2011
8:15 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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PaulS's 9 posts GB flag
Thursday, 28 July 2011
12:17 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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julie's 1 post GB flag
Friday, 29 July 2011

8:08 AM

julie: Can you please provide a full (not partial) postcode.

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Briantist's 38,915 posts GB flag
Monday, 15 August 2011
georgina phillips
6:40 PM

My 81 year old mothers new digital tv was working fine after switch over in april but in the last 2 weeks she is experiencing major problems with digital signal on all BBC chanels. Have you done something to the signal strength as nothing has changed in her set up here. She has hearing aids so the sqweeks and tweets delivered by poor signal on all BBC chanels is quite irritating for her ears. She cannot afford SKY subscription and has not received any assistance with digital switchover. We purchased a new tv for her for christmas.

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georgina phillips's 1 post GB flag
georgina's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Tuesday, 16 August 2011

7:43 AM

georgina phillips: She should have been contacted automatically by the
The Switchover Help Scheme can help you make the switch to digital TV. | Switchover Help Scheme

I would have a look at Single frequency interference | - independent free digital TV advice .

You don't have to subscribe to watch via satellite, you can always use Freesat.

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Briantist's 38,915 posts GB flag
Thursday, 25 August 2011
David Corrick
9:50 PM

I Currently have a wide range aerial on the chimney stack of my Bungalow
Tuned to wenvoe I receive channels
c41 c42 c44 c45 c49 I cannot pick up C47
I am also picking up c54 from mendip transmitter. The quality of picture varies from day to day and during a day and I also get distorted sound some of the time.
bbc 1 and bbc 2 wales are the best channels but they sometimes break up. We Live in the country but the is a large tree 50 mtrs away from the aerial blocking the direct line of site of the transmitter.
DOI stick with freeview or change to freesat

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David Corrick's 4 posts GB flag
David's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Mike Dimmick

10:35 PM

David Corrick: Looking at your location I'd suspect too much signal rather than too little. If you have a booster or other amplifier, try turning it down or removing it. You might try adding an attenuator to reduce signal levels.

You won't get C47 unless your TV or box has the Freeview HD logo. This multiplex transmits with a newer standard, called DVB-T2, which gives much more capacity. If your TV is 'HD Ready', you can add a Freeview HD set-top box or PVR to decode the HD signals.

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Mike Dimmick's 2,486 posts GB flag
Tuesday, 20 September 2011
Harry Butler
4:51 PM

We've been coming to Cardiff Caravan Park ( CF11 9XR )in our motorhome for 3 years now and always regarded the Freeview reception as a 'benchmark' for Digital TV (Wenvoe TX). Back in 2010 we used to get about 136 channels on tuning our Freeview TV (22" Technika) - I note that now we only get 106 - why is that ??


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Harry Butler's 3 posts GB flag
Harry's: mapH's Freeview map terrainH's terrain plot wavesH's frequency data H's Freeview Detailed Coverage

5:18 PM

Harry Butler: Sounds like you used to see "duplicate" channels from other transmitters in your old total, and now you don't.

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Briantist's 38,915 posts GB flag
Harry Butler
7:35 PM

"Sounds like you used to see "duplicate" channels from other transmitters in your old total, and now you don't"

On reflection - I think you're right - my 22" Techika doesn't tune the 'duplicate' 'Wales' channels which probably accounts for the reduced number


Harry (51.4890,-3.1968) 

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Harry Butler's 3 posts GB flag
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