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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 04/12/2023 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! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 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 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 Christmas, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 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! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 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.

Friday, 11 November 2011
9:44 PM

Hi Paul
Are you sure when you re tuned that you only tuned Mendip and not got another transmitter, worth checking again.
The reason why I say this is because the only few calls which I can count on one hand after the last change over was the norm ie: customer goes to autotune and picks up bathamton which is ch22 upwards and so forth.
The problem that causes is when in auto tune it will log the first bbc1 etc that it finds, and anyone on mendip gets the last look in so to speak ch48-67.
So worth double checking that one because the mendip transmitter at the moment is better than its ever been even far as signal strength and stability.

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Dave's 3 posts GB flag
11:33 PM


Yep the tv is definetly tuned to mendip, my tv can display the actual frequency (mhz) of the channel being viewed and they do match the frequencys for mendip.

Am able to recieve com 5 & 6 again tonight, seems at the moment that it's un-watchable during the day but ok at night!

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Paul's 7 posts GB flag
Monday, 14 November 2011
Stephen Saunders
4:51 AM

Paul, I don't know where you are, but when we lived in the Entry Hill area of Bath, we had similar issues with multiplexes dropping out. Our line of sight to Mendip was very borderline, and we found that our reception varied according to wind/rain, time of day, atmospheric pressure etc. Trees were certainly an issue, more so in summer and in wet weather than in winter.
I'm no expert, but at the very least I'd advise doing a full retune, making sure all your leads and connectors are top quality etc. To be honest, I'd get someone in to make sure your installation is OK, or just use your satellite option.

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Stephen Saunders's 3 posts GB flag
Stephen's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage

10:36 PM

Paul: If you had no problems with COM6 (Arq B) reception prior to the September changes, you shouldn't have a problem now, it just moved down channels from C67 to C52. COM5 (Arq A) however was previous transmitting in 2K mode and when it moved upto C67 it changed to 8K mode which has the effect of giving weaker reception in marginal conditions.
From what you've said, it does suggest a problem with your external aerial installation has developed.
How old is your external aerial and coax?
Is it securely mounted and could it have moved (angle wise) at all in the wind? Is the coax strapped to the pole and secured by clips etc for the drop?
If you give your postcode as well we might be able to a give some more informed comment.

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Chris.SE's 251 posts GB flag

10:43 PM

Mike: Can you please give your postcode. It sounds as though you may be receiving several transmitters. (PS. The Mendip power increase for Arq A & B is March next year & Arq A will move down from C67 to C56).

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Chris.SE's 251 posts GB flag
Friday, 18 November 2011
9:34 PM

Several of my friends and family have recently upgraded their aerials and in some cases replaced digi boxes or the TV itself due to some poor reception of some freeview channels. I have not followed that route but do have problems with certain channels on the Mendip transmitter channels which are on low power.
These channels show a service signal strength of about 40% but on a regular basis drop to 0% , I have investigated all the known problems for interference and can not find any common cause with my reception and my friends with similar service interruptions, the transmitter that always reports constant up time is some other broadcast causing interference on an intermittent but regular basis.
Mostly affects channels on 842000kHz

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Kevin's 1 post GB flag
Kevin's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
Friday, 25 November 2011
Jeff Glynn
10:07 AM

Anybody noticed the drop-off in signal quality
on COM6 (Channel 52) since last retune? I suppose that it will corrected when full power and final channel positions are available next year.

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Jeff Glynn's 4 posts GB flag
Jeff's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Saturday, 26 November 2011
Neville Mitchell
11:37 AM

Does anyone know why the ITV1 + 1 service from Mendip is Wales region not West?

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Neville Mitchell's 2 posts GB flag
Neville's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Neville Mitchell
12:15 PM

Dave, thank you for the quick reply

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Neville Mitchell's 2 posts GB flag
Neville's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
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