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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 22/07/2024 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 U&Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 U&Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 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 U&Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 U&Drama +1, 65 That's TV 2, 70 Quest +1, 74 &UYesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
12 Quest, 25 U&W, 27 U&Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 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.

Wednesday, 10 March 2021

12:14 AM


As already mentioned there is Planned Engineering listed for Mendip at present. If your set auto-retuned when signal was interrupted (if it has that function turn it off, it's more trouble than it's worth) or you retuned, then as StevensOnln1 has already said it can clear the correct tuning!

At time of posting Mendip is transmitting at normal power, try a manual tune on UHF channel C32 (the BBCA/PSB1 multiplex) to see if it restores the channels. If you have an HD/T2 tuner and the HD channels are also missing, try a manual tune on UHF C35.

If you still have no luck, as already advised, check connections and check your aerial is intact and still pointing in the correct direction. If you need more help, please provide a full postcode so we can examine predicted reception at your locale.

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Chris.SE's 4,272 posts GB flag

12:25 AM


How old is your aerial?

The Sony Movies Classic channel is broadcast on the Local Multiplex which doesn't have the same coverage as the other main multiplexes carrying other main channels BUT it should still be receivable in most parts of Chipping Sodbury, see Channel listings for Industry Professionals | Freeview for which programme are carried on which multiplex.
As StevensOnln1 has already said we need a full postcode to look at predicted reception in your locale.
The Local multiplex is on UHF channel C30 from Mendip. You could try a manual tune as that may pickup the channel. Auto-tune sometimes misses weaker signals.

If your aerial is an old aerial group C/D then you may have occasional trouble with the main BBC SD channels (the BBCA/PSB1 multiplex is on UHF C32) and may not be able to get the Local multiplex on C30. These days you may need a Group T/Wideband aerial to get all the multiplexes satisfactorily (depending on location).
Do you have intermittent problems with other channels?

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Chris.SE's 4,272 posts GB flag
Wednesday, 7 April 2021
John Bell
2:46 PM

Loss of many channels, some HD and some non-HD since November 2020at BS30 6US.

Sometimes some work after retune but only for a few days. Loft aerial checked for direction and fitted with 18dB amplifier then fed to 4 output splitter.

Lounge: LG HD tv, Youview + HD box for Prime via wi-fi.
Bedroom: Sony tv, Youview HD box not wi-fi.
Kitchen: Samsung HD tv.

link to this comment
John Bell's 1 post GB flag
John's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage

7:14 PM

John Bell:

According to the Freeview checker you should be getting virtually perfect reception from Mendip in your locale.
Is the loss of channels the same on each set? Some more detail might help, is it LCNs101-105, or 106/107 etc.?
Example channel LCNs may help to narrow down the issue.

How old is your aerial roughly? Likewise, how old is the amp (and splitter)?
Is the wiring to the amp & splitter plug-in connections? Check all your connections to make sure they're making a good connection.

If easily possible connect the aerial output direct to the feed for the Lounge TV and in the lounge, plug the aerial connection direct to the TV. then go into the TV Tuning section, look at Programmes and Settings, and then go to Signal strength. Post up the Signal and Quality figures for each multiplex.

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Chris.SE's 4,272 posts GB flag
Saturday, 12 June 2021
Paul hudson
2:47 PM

I need to buy a new aerial after my builder removed the old one during the removal of our chimney. I am not sure what external aerial I need to buy to replace it. I live on hill in Weston super mare with a clear line of site to the Hutton transmitter but I would like to connect to the Mendip transmitter?

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Paul hudson's 1 post GB flag

3:34 PM

Paul hudson:

If you mean Hill Rd. in WSM then you stand a chance BUT that's a guess on my part, we do need a full postcode to look at the predicted reception. If you look at the coverage map above with Pro-mode enabled and zoom in, you can see the general difficulties in the WSM area, but do not take the map as 100% accurate, these things aren't always the case (nor are predictors) but they give a general idea.

Which way are you neighbours aerials pointing? Are the rods (or squashed Xs) horizontal or vertical? If they are horizontal and pointing roughly ESE (although depending on location Hutton maybe roughly the same direction but vertical rods) then you may get Mendip, but a full postcode will give a far better idea.

If you want all multiplexes from Mendip, you'd need a Group T/Wideband aerial BUT if predicted reception (especially of COM7) isn't good, you might be better with a Group A and forget COM7 (but again you might get that off the back of the aerial from Wenvoe. Whatever, do not be tempted to buy one of these "baco-foil" aerials from certain DIY outlets, the first pigeon or two to land on it will bend things all over the place!
Once we know what the predicted reception might be and what your neighbours are getting, we should be able to give some sensible choices.

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Chris.SE's 4,272 posts GB flag
Sunday, 13 June 2021
bruce james tearle

5:16 PM


what channel in the new news program 236 being broadcast on?


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bruce james tearle's 56 posts GB flag

5:54 PM

bruce james tearle: GB News is broadcast on the COM6 multiplex, which is on UHF channel 36 from Mendip.

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StevensOnln1's 3,653 posts GB flag
Monday, 14 June 2021
bruce james tearle

12:10 PM

Thanks for info, will refresh my box.


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bruce james tearle's 56 posts GB flag
Wednesday, 16 June 2021
Kelvin Smith
1:02 PM

I live in Stonehouse No7 GL10 3QP and have a new roof top wide band aerial pointing at the Mendip transmitter but have bad signal quality on all the HD channels.
Using my TV signal information I get;
Ch Sig Quality BER
32 94% 100% 0
33 92% 76% 0
34 92% 50% 0
35* 92% 40% 1268
36 92% 48% 0
37 0% 0% 2,000
48 100% 100% 0
55 96% 0% 2,000

I get a slightly better HD pictures if I tune into Wales, but cannot move C5HD & C5HD to 104 & 105;
Ch Sig Quality BER
47 93% 70% 0

Should I change the aerial to Group B to try and get some more gain in signal strength? Other thoughts?

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Kelvin Smith's 5 posts GB flag
Kelvin's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
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