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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 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, 1 June 2017
Jane crabb
9:54 PM

StevensOnln1: hi thank you for your reply....i changed the rf output to C38 which is a lot better im getting a picture with sound but it keeps jumping around and i have flashes off green...ive tryed fine tune no luck..any other ideas?

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Jane crabb's 5 posts GB flag
Jane's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Tuesday, 6 June 2017

5:23 AM

Jane crabb: Just to be clear, are you really trying to pick up signals from the Mendip Transmitter? - according to your postcode it's the furthest transmitter from you! and you addressed your previous post to Charles Stuart and I don't see a recent post from him on this board.
But in any event, any box that has an RF output (in your case a Sky box) can produce interfering signals at various channels above the one to which it is set, so I would not use C38 as some multiplexes you want to receive are above it. I would go for C62 and above as they are no longer used by Freeview. The only potential issue I see with that is if you have a 4G phone that uses the same band of frequencies it might affect your phone signal.

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Chris.SE's 3,915 posts GB flag
Tuesday, 13 June 2017
Transmitter engineering

8:32 PM

MENDIP transmitter - DAB: BBC National DAB Radio Reduced Quality from 11:59 today. [BBC]

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Transmitter engineering's 146,542 posts xx flag
Wednesday, 12 July 2017
Bill McDonald

9:52 AM

Hi, Have just moved to a new house, BA22 8TX, and I am picking up everything from Mendip except com7 and com 8 channels, is it the old problem of needing two aerials to make everything work or is this just a bad reception area? I have a wideband aerial on the roof and have tried re-tuning to no available, any ideas?

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Bill McDonald's 40 posts GB flag
Bill's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage

10:39 AM

Bill McDonald:

Is your aerial a wideband type? Mendip transmits HD on channels 33 and 35, which is outside of the range covered by a typical Group C/D aerial commonly used for the other services. You say you have a wideband aerial, but is it realy a true 'wide band' type? If not, that may affect the signal strength for HD at your TV set so that they are too weak. Check the strengths shown on each multiplex by your TV, the manual will tell you how.

The best solution is not an amplifier nor a second aerial but replacing the current one with a good log-perodic aerial that covers all the current and foreseeable future channels. You should aim for a signal strength of between 60% and 85% for HD services and no more than 85% for SD channels. At just 38km from Mendip you should be getting good signals, but the other alternative sources are much further away and don't give local service for the Yeovil area.

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MikeP's 3,056 posts GB flag

10:24 PM

Bill McDonald: Your 33km from Mendip, which carries both muxes, so you should be totally fine, so I'd check if you are actually tuned to Mendip at all.

BTW - why would you need two aerials?

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MikeB's 2,579 posts GB flag
MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Tuesday, 18 July 2017
Bill McDonald

1:58 PM

Hi MikeB,
I have no problem with all the other stations on my equipment, it just seems that the area I am in seems to be a bit of a dead spot for Com7 and Com8, and yes I am tuned to Mendip.


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Bill McDonald's 40 posts GB flag
Wednesday, 19 July 2017

1:51 PM

Bill McDonald: Why dont you ask your neighbours? If they can get those muxes and you cant, then that points to your equipment.

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MikeB's 2,579 posts GB flag
MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Wednesday, 9 August 2017
4:50 PM

If I read it correctly, am I right in concluding that post the 2019 change over, Mendip looses muxes Comm 7 and Comm 8. If so , does that mean that I loose BBC4 HD? Thank you.

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Tom's 2 posts GB flag
Thursday, 10 August 2017

5:31 PM


COM7 and COM8 have always been a temporary solution to a lack of spectrum, so when the channels and multiplexes are reorganised they will no longer be needed as the channels they currently carry are intended to be moved to other multiplexes. That means you do not lose any services unless the broadcaster decides to cease transmission.

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MikeP's 3,056 posts GB flag
MikeP's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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