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Full Freeview on the Mendip (Somerset, England) transmitter

first published this on - UK Free TV
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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 27/11/2023 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.

Thursday, 5 April 2012

10:23 PM

Malcolm Brooks:
As you live in a block of apartments, the distribution system will no doubt be channelised and a filter will need changing with the channel change, this is why you experienced things working correctly after a week last time - the length of time the Management took to get the aerial contractor in to change the filters. I'd be asking for a refund on some rental or maintenance fees!!

If you live in flats, you may have the same issue as Malcolm Brooks.
However, if you have an aerial amplifier, it is also possible you may have too much signal. If it's an internal one, try taking it out of circuit.

Whilst it's possible that Alison Armshaw may have too much signal it is also possible that her PSB1/2/3 muxes have tuned to the local Bath repeater as these are lower UHF channel numbers - she didn't specify which programmes she had problems with!

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Chris.SE's 251 posts GB flag

10:37 PM

Alison Armshaw:
If you are still having problems then do a full factory reset of your TV/box as described at the top of this page My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | - independent free digital TV advice
At step 6, I would then leave the aerial unplugged until the scan has got to about say 40% or above UHF channel 30 depending on your display. If that doesn't work, do the clear/reset again and the do a manual retune using UHF channels C61, C54, C48, C52, C56 and if you HD C58.

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Chris.SE's 251 posts GB flag

10:41 PM

Have you had any channel loss with any of the previous retunes that have eventually got resolved? If so, you may have a channelised system as I mentioned to Malcolm Brooks.
If not, try the reset I've just mentioned for Alison Armshaw.

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Chris.SE's 251 posts GB flag
Saturday, 7 April 2012
Ben Ward

11:42 AM

Dave Lindsay, you said "Check that the receivers are tuned to the channels used by Mendip and not Bath." How do I do this exactly, please?

Thank you,

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Ben Ward's 28 posts GB flag
Ben's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Ben Ward

11:56 AM

...and Mike Dimmick, is this a suitable attenuator do you reckon? Adjustable 0-20dB attenuator, coaxial connector version: Electronics

Ben (SN126BF)

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Ben Ward's 28 posts GB flag
Dave Lindsay

12:15 PM

Ben Ward: Hopefully the signal strength screen gives the UHF channel that the receiver is tuned to (most do, although some don't).

As services are transmitted in groups known as multiplexes or "muxes", you only need check one service from each mux.

Bath only transmits only Public Service channels (BBC, ITV1, C4, C5 etc) so if this is the problem then it will only affect them.

BBC One should be tuned to C61 for Mendip and not C25 for Bath. ITV1 should be tuned to C54 for Mendip and not C28 for Bath. If any of these receivers are HD, then BBC One Hd should be tuned to C58 and not C22.

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Dave Lindsay's 5,724 posts GB flag
Dave Lindsay

12:17 PM

Ben Ward: If this does turn out to be the case, run the automatic tuning scan with the aerial unplugged up to 50% and you'll miss out channels used by Bath and those immediately above it but be plugged in for Mendip.

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Dave Lindsay's 5,724 posts GB flag
Sunday, 8 April 2012

12:40 AM

Ben Ward:
The attenuator you have asked Mike about should be fine.

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Chris.SE's 251 posts GB flag
Tuesday, 10 April 2012
Ed Stone
6:38 PM

Im in street. Today we seem to be experiencing very bad break up on the bbc channels i recently rescanned them following the advice on here. Anyone got any ideas?

Ive tried doing a rescan on c61 for the bbc channels.



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Ed Stone's 1 post GB flag
The Wakefield
11:52 PM

Hello there, knowledgeable people! ^_^ I'm having a terrible problem with Freeview Reception and was wondering if anyone could confirm or deny that the Mendip Transmitter is having any engineering work done to it? After the slight channel change on the 28th of March when all the channels were set to full whack, we had perfect reception for a day or two (I forget how long exactly ^_^;) but after that day or two, like I said, our reception is terrible. Channels 54 & 48're not perfect but definitely the strongest, next is 52, and depending on the time of day 61 & 56 are unwatchable. I've noticed a few other people with similar problems so is it us, or is there something going in Mendip that we don't know about? Thanks for reading! ^_^

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The Wakefield's 6 posts GB flag
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