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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 15/04/2024 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, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
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 TV 2, 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
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 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.

Saturday, 2 August 2014
Transmitter engineering

4:33 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 09:06 yesterday to 10:39 yesterday. [BBC]

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Transmitter engineering's 150,632 posts xx flag
Sunday, 3 August 2014
Transmitter engineering

4:32 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 09:06 on 01 Aug to 10:39 on 01 Aug. [BBC]

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Transmitter engineering's 150,632 posts xx flag
Tuesday, 5 August 2014
11:57 PM

Thanks for the replies jb38 and Charles. I have tried to tune ch 33 manually and there is no signal on my Humax HD PVR. The reason I say needing a wideband aerial is a pain is because it is on the end of a long pole on a very high chimney! I have reached it in the past, but I really don't fancy it now, and it isn't worth paying an aerial installer just to get BBC Four HD.

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Jon's 4 posts GB flag
Wednesday, 6 August 2014

7:31 AM

Jon: If you have carried out this test exactly as described, i.e: entering Ch33 but "not" followed by scanning it and no traces of a signal appeared on the strength / quality bars, then this does not look promising as far as the reception of this channel is concerned, because this type of test uses the tuner as a "poor man's" form of active signal meter free of threshold cut off levels, likewise will reveal signals down to a level well "under" that required to resolve a picture, and if any traces of a signal were evident then changing the aerial would have increased this level to one that would resolve a picture, although "maybe" with the aid of a booster.

As a matter of interest, what signal level readings do you get using the same type of test on C58?, the normal PSB3 HD service.

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jb38's 7,179 posts GB flag
Iain Davies

5:58 PM

What has happened to the signal level of local MUX on ch51? Until a week ago it was giving 90% signal strength and 90% signal quality, but now it's down to 50% signal strength and 30% signal quality.

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Iain Davies's 38 posts FR flag

9:02 PM

I get all my Freeview services from Mendip and they are all still at the same strength/quality as they were a month ago!
To help us to help you we really need a post code or that of a nearby shop so we can check both the transmission path and local terrain - which can affect your reception.

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MikeP's 3,056 posts GB flag
Thursday, 7 August 2014
Iain Davies

3:40 PM

MikeP. When the local tv MUX started from Mendip and CH33 for the extra HD channels, living in Weston I installed a high gain W/B aerial outside so I could get all channels from Mendip. Replacing the group C/D aerials we needed before. The new instillation gave full signal strength/ signal quality on all channels,and as I said very slightly lower strengths on channel 51 which I was not surprised about not being in the direct beam for the local MUX. The drop is so bad that two other tvs with ordinary W/B aerials gives no signal level at all.

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Iain Davies's 38 posts FR flag
Friday, 8 August 2014
paul edwards
6:34 PM

hi i live in Newport south wales i get my signal from Mendip at present there no signal from channel 33 hence have not got all HD channels is there reason ?

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paul edwards's 1 post GB flag
Dave Lindsay

8:01 PM

paul edwards: Maybe you have a Group C/D aerial which works best on the higher channels. Or do you have a second aerial on a Welsh transmitter? Aerials, TV Aerial and Digital Aerial

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Dave Lindsay's 5,724 posts GB flag
Saturday, 9 August 2014
3:46 PM

Hi jb38, yes, I did do the test correctly on ch33, and it showed nothing at all. I also tried ch58, and after manually selecting DVB-T2 it showed 54% strength and 100% quality. I rechecked ch33, made sure I had selected DVB-T2, and it definitely shows nothing. I think I need a wideband aerial.

Thanks, Jon

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Jon's 4 posts GB flag
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