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Full Freeview on the Mendip (Somerset, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.237,-2.626 or 51°14'12"N 2°37'33"Wsa_postcodeBA5 3LB


The symbol shows the location of the Mendip (Somerset, England) transmitter which serves 720,000 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 Mendip (Somerset, England) mast?

Mendip transmitter - Mendip transmitter: Possible effect on TV reception week commencing 02/10/2023 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 Mendip 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
C32 (562.0MHz)591mDTG-100,000W
Channel icons
1 BBC One (SD) West, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 17 others

 H max
C34 (578.0MHz)591mDTG-100,000W
Channel icons
3 ITV 1 (SD) (West), 4 Channel 4 (SD) South ads, 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 (West),

 H max
C35 (586.0MHz)591mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD West, 102 BBC Two HD England, 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H max
C48 (690.0MHz)591mDTG-8100,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 Great! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 68 RealityXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 35 others

 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
 Smithsonian Channel, 11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's 60s, 70 Quest +1, 74 Yesterday +1, 75 That's 80s, 233 Sky News, plus 11 others

 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 Great! Movies Christmas, 56 That's TV (UK), 61 GREAT! movies +1, 63 Great! Movies Christmas 1, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 235 Al Jazeera Eng, plus 20 others

 H -10dB
C30 (546.0MHz)591mDTG-1210,000W
Channel icons
from 22nd September 2014: 7 Made in Bristol,

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 Mendip transmitter?

regional news image
BBC Points West 0.9m homes 3.4%
from Bristol BS8 2LR, 25km north (3°)
to BBC West region - 60 masts.
regional news image
ITV West Country News (East) 0.9m homes 3.4%
from Bristol BS4 3HG, 23km north (11°)
to ITV West region - 61 masts.
All of lunch, weekend and 50% evening news is shared with West Country (West)

Are there any self-help relays?

CheddarTransposer15 km E Weston-super-Mare1674 homes
LuccombeActive deflector6 km w Minehead38 homes

How will the Mendip (Somerset, England) transmission frequencies change over time?

1984-971997-981998-20102010-132013-182013-1727 Feb 2018
C49tv_off BBCABBCA

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 24 Mar 10 and 7 Apr 10.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 500kW
Analogue 5(-6dB) 126kW
SDN, ARQA, ARQB, BBCA, D3+4, BBCB(-7dB) 100kW
com7(-8.4dB) 72.4kW
com8(-8.6dB) 69.1kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*, LBS(-17dB) 10kW

Which companies have run the Channel 3 services in the Mendip 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. Mendip 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, 17 May 2017
2:40 PM

BS374JW. Channels 25, 31, 47 ARQB are pixillating and freezing, have followed rest procedure made no difference. Until recently these channels were working fine. 6530 303a shows Bit level 264+, and signal strength of 9.

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Martin's 1 post GB flag
Sunday, 21 May 2017
4:55 PM

Williton area signal was great through the winter, last week it's been very poor. I realise we are on fringe of Mendips but any reason why signal has gone from excellent to awful in the last week, especially on 46 and similar Freeview channels?
Thanks kindly,

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Dave's 12 posts GB flag
david carter
6:29 PM

I lost HD channels a couple of weeks ago, and other channels suffer pixilation occasionally, when I rescan it doesn't even discover HD channels, I am in Bradford abbas just the other side of yeovil

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david carter's 2 posts GB flag

10:48 PM

david carter: Please provide a full postcode so we can see predicted reception for your exact location. Also, have you checked all the cables and connections behind the TV? A loose or damaged cable or connector often turns out to be the cause of problems such as this.

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StevensOnln1's 3,553 posts GB flag
Friday, 26 May 2017
Keith rodgerson
1:32 PM

david carter: I'm having the same issue. For the past few weeks my bbc1 2. ITV and channel 4 and 5 had signals through my YouView box have been pixelating. I rescanned and now they don't appear at all. Is the signal strength low? I'm high up in Clifton in bristol

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Keith rodgerson's 12 posts GB flag

2:18 PM

Keith rodgerson: There has been no recent engineering work affecting Freeview transmissions from Mendip. Signal strength is never reduced from any transmitter for any other reason and never constantly for several weeks. As per my reply to David Carter, check the cabling behind your TV for a loose or damaged cable or connection, then work your way back as far as you can safely access towards the aerial. If you provide a full postcode someone may be able to offer more specific advice.

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StevensOnln1's 3,553 posts GB flag
Saturday, 27 May 2017

10:25 AM

Keith Rodgerson:

I can confirm that Mendip does not have any current problems and has not had over the last several weeks. I use Mendip as my main Freeview source. StevensOnln1 is correct in that transmitter power is never educed for any significant length of and is only temporarily reduce if there is some major engineering work being carried out, it always returns to normal as soon as the work is completed.

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MikeP's 3,056 posts GB flag
Monday, 29 May 2017
7:40 PM

I posted about 10 days ago about recent poor reception on Freeview esp channels such as 46, 12, and others. Unwatchable and dire pixillation.
Possibly a combination of living on the fringe Mendips reception area and the very warm temperatures we have had, as I've done nothing to my TV at all, but today, Bank Holoday Monday (wet and not that warm) all the 'iffy' channels are back on fine, not breaking up at all.
Just thought anyone in TA24 area might be interested.

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Dave's 12 posts GB flag

10:27 PM

Dave: MikeP asked you to supply a full postcode and signal strength, but you havn't. Realistically, if your having the same problem again and again, there is a fundamental issue with your system, or you need to look at alternatives. But your system wont right itself - it will just recover a bit for a while.

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MikeB's 2,579 posts GB flag
Tuesday, 30 May 2017

8:17 AM

Dave: As you already know you are very definitely in a fringe area. If your normal reception during hot weather (eg. last year or any previous occasions this year) is ok, then something may have changed. This could be something in your aerial system/coax/connections as already mentioned/suggested by the two Mikes which has now made your reception marginal/weather dependant. It may also be something directly in the direction of the transmitter - eg. tree growth now at a height that is causing issues, but I think that less likely as you have reported good reception in the wet weather on Monday.
I suspect that it may be interference of some sort, possibly from another transmitter (that could even be a new/upgraded mobile phone mast) which may be weather dependant but possibly made worse if something in your installation has degraded - things can do so over time, it's no good saying nothing has changed, I've done nothing etc etc.
As already suggested, give your installation a thorough check-out first.

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Chris.SE's 3,727 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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