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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 25/09/2023 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, 250 BBC Red Button, plus 16 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, 109 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! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others

 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
 Smithsonian Channel, 11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 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! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 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.

Monday, 1 July 2019

9:15 PM

Ann Lloyd:

Do you have a wideband aerial? One is now needed to receive all the channels used by the Mendip Transmitter. If you do not have satellite or cable, then you may qualify for a free replacement aerial, contact Freeview Support via Important changes to Freeview TV signals | Freeview

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MikeP's 3,056 posts GB flag
Tuesday, 2 July 2019

12:12 AM

Ann Lloyd:

As MikeP says, you need a Wideband/Group T aerial to satisfactorily receive all channels from Mendip. The two muxes D3&4 (for ITV, 4, 5 etc) and BBC B HD are predicted to be received more poorly at your location than the other multiplexes so if your aerial isn't correct, you may just receive the other multiplexes OK but not those two, see your predicted reception at Coverage Checker - Detailed View scroll to the bottom for Mendip.

Also however, as you may see, at your location several transmitters are receivable and it's possible that you aren't tuned to all the correct UHF channels so you need to check that you are tuned to the following UHF channels for Mendip's multiplexes - 32, 34, 35, 48, 33, 36, 55, 56.
Now if you are tuned to the correct channels (check your tuning menu for manual tuning/signal test etc) then, depending on your aerial and it's position you MIGHT get reception from Stockland Hill UHF23 &29 for the two multiplexes in question, but they are West Country regional programmes, not West. HTH.

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Chris.SE's 3,686 posts GB flag
Friday, 5 July 2019
4:02 PM

Chris.SE: My aerial is on my chimney, there is only one and it works very well, some of the time. Today first the sound went off the HD channels, then when I returned, I lost all the channels. This website says there are no problems at Mendip, but unless somebody has put up a gigantic metal screen somewhere behind my house, there is no other explanation. I have no signals at all ow for several hours. ANy ideas?

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Carole's 6 posts GB flag
6:07 PM

Chris.SE: I have no channels at all. I was watching Yesterday a couple of days ago and it was fine. I could also get channel 4 hd +1 (109), which is from Mendip. Channels 7, 231 and 233 are fine. I have never seen any channels in the 800 range. After my last retune I found some in the 700s. I just bought a new tv last week, and it has been fine including this morning around 9 - 10 am. However, when I switched on to watch tennis around 3 pm, there was no sound on hd channels, then I tried to tune them better, which left me no channels at all. I have tried every type of tuning many times with no result. The aerial is still attached, the cables look fine. Either my aerial has just died, which is possible, or this is just another of the many problems I get with freeview transmission, which I find much more likely. If I am getting some kind of massive interference, how would I find out? Nothing works at all!

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Carole's 6 posts GB flag
6:20 PM

Chris.SE: The tv I just bought is a Toshiba 49V6863DB. Still no channels from 3.10 pm to now. BS10 6NS/224.

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Carole's 6 posts GB flag
Carole's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage

10:23 PM


Firstly, you should not have retuned - that has lost the channels for you. Secondly, despite having had good results until recently, your old aerial will now not be suitable for reception od Freeviw signals fro Mendip. You need to have it changed for a wideband, Group T type to receive all the transmitted channels.

You may qualify for a free replacement aerial as long as you do not have cable or satellite and contact the Freeview Support helpline.

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MikeP's 3,056 posts GB flag

10:54 PM


Leaving aside what MkeP says for a moment, you were receiving some channels previously. I do not believe that at your location (which I know) you will no longer be getting anything unless there is some fault or interference (or coincidence). Is your aerial pointing the correct way?

Doing a manual tune will be the best way of checking things out but AFTER you have unplugged your coax plugs and sockets, looked at & checked the connections and plugged them back in.

Having done the checks, leave the aerial unplugged and do an automatic tune, this will clear the set of any previously stored information which may/may not have been correct.
Look at your manual & your set's programme/tuning menus and find the Manual tuning option (I'll try and look at a manual myself after this post and post back anything useful). Now choose UHF Channel 48 which is the SDN multiplex which your existing aerial should get with no problem if there is no fault.
If that works OK then as you have a new set, also try UHF channels 55 & 56 which are the two HD muxes COMs 7&8.

If all that is working so far then it's worth having a go at the other channels.
The UHF channels are 32 (BBCA), 34 (D3&4), 35 (BBCB - HD), 33 (ARQA - COM5), 36 (ARQB - COM6).
If your aerial is not the correct type you may well have problems with some or all of those. The situation may be compound by the current weather high pressure conditions which can cause interference from other transmitters.
If all has gone well, then the local mux is on UHF 30, you could try that as well.

One final query, do you know roughly how old that aerial is supposed to be?

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Chris.SE's 3,686 posts GB flag

11:43 PM


OK your TV Installation Menu has a couple of things you need to look at.

First, if it has an Installation Settings (model dependant) then make sure that Standby Search and Dynamic Channel Update are both turned OFF. You can get too many transmitters and this is likely to cause confusion and possibly incorrect tuning.

2nd, The menu has Automatic Channel scan which, as already mentioned, you should do with the aerial unplugged to clear any previously stored tuning.

Then select Manual channel scan, and go through the UHF channels in the order I mentioned in the previous post. If you are successful with any of the first ones, ie. 48, 55 & 56, then goto the Signal Information menu and see what it tells you for firstly UHF channel 48, then 55 & 56.
If all is good so far then Manual tune UHF 32, and check the Signal Information for it (make a note of all these) so you can tell us. Carry on with the other UHF channels if everything is working OK.

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Chris.SE's 3,686 posts GB flag
Sunday, 7 July 2019
12:15 AM

The only way to air an opinion about possible 'security' concern on this site is to mention it here or on twitter publicly?

No means to private message or email anyone?

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Fade's 4 posts GB flag
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