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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.

Tuesday, 8 October 2013
8:04 PM

I spoke too soon - signal all gone again!
Let's hope that the new aerial being fitted tomorrow will rectify our issues.

I wonder about all the mobile transmitters around our house (some quite close) and whether they are interfering with the digital signal?

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HoodedOracle's 8 posts GB flag

8:17 PM

HoodedOracle: Blaming 3/4G is a bit of a favourite, although almost certain unfairly.

It sounds like you've got old coax which sometimes works, and sometimes doesn't. Let us know if things improve.

BTW - I just noticed on one of your previous posts that 'Though my neighbours are also having signal issues - but it is likely because they are using boosters - they have taken the boosters out and seem to have better signal now? '. Yep! Your 25km from the transmitter, which is fairly close when you consider how power levels have gone up.

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MikeB's 2,579 posts GB flag
Wednesday, 16 October 2013
9:01 PM

Hello, We seem to have lost loads of tv channels, including Dave, Dave +1 and E4+1. It says when scanning for channels there is only 60 available, but ive also noticed that we have lost the ability to pick up the correct areas news program. we now get spotlight wheras it should be points west
is there any advice??
We live in BS232NG area if this helps

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Andrew's 4 posts GB flag
Sunday, 27 October 2013
Gareth Rhys
2:10 PM

FreeView Signal worse since Apr retune. Also had Freesat for main TV (dual tuner).
We have a frequently poor signal on BBCA mux ch49 since it moved freq., but also on all the channels above 700Mhz (Ch52, Ch54, Ch56). Location Stroud top of hills GL6 8.
We have a Labgear 16.5dB high-gain wideband (future proof for Mendip change) aerial installed, and then dual screened satellite quality cable /F-Connectors to internal distribution amp, feeding dual screened cable to multiple televisions 3xPanasonic / 1xSony all seeing the same quality level issue (drops and then rises again) and breakup. The signal strength is middle and drops occasionally, with a concurrent drop in quality. It is poorer still with windy/wet weather. Have considered buying a 4G 800Mhz filter, but no 4G here yet (only in Bristol?).

Got better before analogy switch off when I removed the masthead booster from circuit.
Have tried full reset/retune of TV's.
Have tried replacing dist amp with simple splitter
What next ??

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Gareth Rhys's 1 post GB flag
Monday, 28 October 2013

6:19 AM

Gareth: have you tried connecting the aerial lead directly to one of the tv's (with an f to f coupler) and seeing what the strength and quality are like then? i'm not a fan of any labgear product really but have you ruled out the aerial?

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Andrew's 57 posts GB flag
Andrew's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
7:57 AM

Andrew: my TV reception has failed and went down last night, 27th. Oct. I view through a Humax Video Recorder. On selecting a given station, the TV Screen brings up detail of the programme I should be watching but then details "No or bad signal". Any ideas on what has gone wrong?

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K.M.Riley's 1 post GB flag

1:03 PM

K.M.Riley: You havn't included a postcode, but I'd guess that if you have a roof top aerial, then last nights storm might well have loosened or broken the cable from the aerial. Try following the connection back from the Humax through to the aerial. If its on the roof, you might well need a professional, who might be pretty busy for the next week!

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MikeB's 2,579 posts GB flag

1:23 PM

Gareth Rhys: Your postcode is a bit difficult to pin down for a terrain plot, but a generic one does bring up a decent signal on the tradeview (even though Mendip is 64km away), which is supported by the fact that your on a hill, and that your signal was improved by the removal of your booster.

4G is unlikely, since you have no booster (ok - the aerial does boost, but still...), and you seem to get a pretty good signal. Personally, I suspect that most '4G' problems are actually something else anyway.

You've good good cabling, good connectors, etc, and Panasonic/Sony have good sensitive tuners. Its true that three TV's might lead to a drop in signal strength to each one, but I suspect the problem is more than that.

However, there is one thing that immediately stands out - ' The signal strength is middle and drops occasionally, with a concurrent drop in quality. It is poorer still with windy/wet weather.'

'Poorer still with windy/wet weather' - it sounds like you have a problem with the connection between the aerial and the tv, and its very possible that its the result of a loose connection, corroded or waterlogged coax, etc.Since its all three TV's, its above the splitter.

You might need a pro to examine the parts on the roof, but at least study the cabling you can see.

Let us know what happens, and if you can put you full postcode on any future comment, we can see the exact terrain plot.

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MikeB's 2,579 posts GB flag
Thursday, 31 October 2013

10:25 PM

Re Gareth, you sound from the postcode like you're round the corner from my parents, who have generally had better Freeview reception from Mendip than I do here in Bristol, so for Mike B I'd tend to trust the generic signal forecast. Unfortunately my phone's just gone down, so I can't ask them if they've had Freeview issues recently. I note that they didn't seem to have much storm impact this week, but all the rain could have got into cabling.

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EL's 23 posts GB flag
Saturday, 2 November 2013
Andrew Brown

12:34 AM

KM Riley do you have a booster of any kind in your system?

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Andrew Brown's 57 posts GB flag
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