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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 18/09/2023 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, 250 BBC Red Button, plus 16 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, 109 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, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 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, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 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! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 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.

Thursday, 29 December 2011

9:37 PM

DENNIS MARRABLE: Just to add, if the analogue channel is changed then obviously each TV on the system will require re-tuning to pick the new channel up, this obviously done whilst the TV's involved are set on "analogue".

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jb38's 7,179 posts GB flag
Friday, 30 December 2011

12:34 PM

jb38 Humax box is pvr9300t, can confirm all freeview channels are good at the moment. Not sure about the excuse being offered by Humax for the problems I'm having, thay's why I asked for feedback!

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bruce's 51 posts GB flag
bruce's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Monday, 2 January 2012
mike smith
5:19 PM

i live in gloucester and tuned into mendip transmiter good signal ridge hill is my local transmiter but its bbc midlands any way i have a amp on my aerial 4 mendip can i now take it off as the signal is stronger after switchover last april

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mike smith's 1 post GB flag
Monday, 9 January 2012
Mrs P.Baigent
9:47 AM

On 3rd January the picture on Channel 11 started to break up,by the 5th all I was getting was no signal.I retuned and lost at least 10 channels on my main set.On two other almost new sets I can only get channels 1-5, all the others are no signal.I had no problems since the diital switchover and a new aerial 6 years ago.Advice please.My next door neighbour has the same problem.

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Mrs P.Baigent's 1 post GB flag
Mrs's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Dave Lindsay

1:41 PM

Mrs P.Baigent: The likely answer (particularly as your neighbour is experiencing the same thing) is that the signal level at your location has dropped a bit, and that the level of the signal going into your TV is now just below that needed for the picture to show.

Retuning may only exacerbate the problem if the TV has the correct frequencies for the transmitter in question. It won't fix the problem (unless, perhaps, it is tuned to the wrong transmitter). You should refrain from retuning in such circumstances.

You need to retune on 28th March due to a change in frequency of some of the services. There is also a similar retune event coming up some time next year.

The commercial channels, including Pick TV are currently on low power from Mendip and will be so until 28th March.

To get the missing channels back, I suggest that you manually tune. Having got them back on your TV, do not retune, even if it starts to break-up or give "no signal". At such times, you might go to the signal strength screen and see that there is a weak signal there, but not enough to produce a picture.

Similarly, if you manually tune you might find that the signal is there but too weak to produce a picture. You will have to try again at a different time.

For a full list of Freeview channels, see here:

DTG :: DTT Services by Multiplex

This list shows which services are carried on which multiplexes. A multiplex is a group or basket of programme channels that are broadcast as one signal on a single frequency. For example, Pick TV and Dave are on the same multiplex (COM5: ArqA). If you haven't got Pick TV, then the same will be so of Dave (and other channels in that multiplex). Conversely, if you have one, you should have them all (in the same multiplex).

What you need to do is identify the multiplexes that you are missing and attempt to manually tune to them to add the missing channels. The three low power multiplexes that you might be missing are:

COM3: SDN (ITV3 etc) manually tune to Ch48
COM4: ArqA (Pick TV etc) manually tune to Ch67 (to change to Ch56 on 28th March)
COM5: ArqB (Yesterday etc) manually tune to Ch52

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Dave Lindsay's 5,724 posts GB flag
Wednesday, 11 January 2012
9:07 PM

I have a recent roof mounted aerial pointed at mendip by the installer and have been receiving a good reception of all channels for several years. In the last few weeks the reception has switched to the local Frome town Repeater with the result I now have less channels. The Panasonic Viera TV and DVD Recorder/Player/DAB tuner do not have a manual retune option, auto retune only which just gives me the Repeater, can you advise how I can tune into Mendip again?
thank you

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

10:59 PM

David: The designers of these things need locking in a room with a 1,000 of them and told to tune them using real-world signals such as is presented at your location!

Fortunately, Frome uses low channel numbers and Mendip high ones and this means that a workaround is to start the automatic tuning scan with the aerial unplugged and then plug it in at 50%.

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Dave Lindsay's 5,724 posts GB flag
Thursday, 12 January 2012
andrew nash
9:00 AM

My post code is GL17 0NP, I recieve all channels but BBC is very unstable. I know that I am at the edge of the reception area but central doesn't give the appropriate news coverage. Is the BBC signal strength less than other channels?

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andrew nash's 1 post GB flag
andrew's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Dave Lindsay

10:45 AM

andrew nash: The BBC Reception website says that there are no problems with Mendip (its BBC services at least that is).

BBC (Ch61), ITV1, C4 etc (Ch54) HD services (CH58), SDN: ITV3 etc (Ch48) are all at their final full power of 100kW.

Arq A: Pick TV etc (Ch67) is at 26kW until 28th March when it will move to Ch56 on its final power of 100kW.

Arq B: Yesterday etc (Ch52) is at 25.7kW until 28th March when it will go up to its final full power of 100kW.

Digital UK says that there is no work scheduled at Mendip. (Ch48 ar) 

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Dave Lindsay's 5,724 posts GB flag
Friday, 13 January 2012
Onur Gorduk
11:41 AM


When did you updated the channels? Are these information up to date?

thanks in advance.

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Onur Gorduk's 1 post TR flag
Onur's: mapO's Freeview map terrainO's terrain plot wavesO's frequency data O's Freeview Detailed Coverage
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