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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 02/10/2023 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! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 68 RealityXtra, 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 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, 65 That's 60s, 70 Quest +1, 74 Yesterday +1, 75 That's 80s, 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! Movies Christmas, 56 That's TV (UK), 61 GREAT! movies +1, 63 Great! Movies Christmas 1, 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.

Friday, 16 December 2011
Rod Roberts
5:40 PM

Postcode SN126JE

Its not only freeview i have it can be any channel i get interference sometimes i lose the channel and the no signal sign comes up,i have retuned my tv and Humax box i do not have Sky,would this help if i had Sky installed.

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Rod Roberts's 5 posts GB flag
Monday, 19 December 2011

7:53 PM

Rod Roberts: Your postcode should get a good signal from Mendip, but you're very nearly in line with the Westwood relay transmitter (Bradford on Avon).
Have you tried a manual tune for the Mendip channels rather than an autotune (which might pick up Westwood)?

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JimF's 141 posts GB flag
Dave Lindsay

8:05 PM

Rod Roberts: Ditto JimF's comments. I would manually tune in your case.

Alternatively, run the scan with the aerial unplugged and plug it in when it gets to 61%.

If, once you've done this, ITV3 is missing, then manually tune to Ch48 and this will add it and associated channels.

If Yesterday is missing, tune to Ch52. If ITV1 is missing, tune to Ch54.

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Dave Lindsay's 5,724 posts GB flag
Thursday, 22 December 2011

1:11 PM

My Humax freeview box failed to function again, causing my wife considerable stress which inn turn gave me gbh of the ear. Problem has been solved by a software upgrade issued by Humax. The reason for the problem [according to Humax] is 'There was a change in the broadcast signals that we werent aware of which has now been rectified by this update.' My question is who is responsible for the changes and why are they occuring. This is the 2nd time I have had this problem in recent weeks

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bruce's 51 posts GB flag
bruce's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Tuesday, 27 December 2011
4:30 PM

I'm just back from Somerset where the BBC channels on C61 were very unreliable, stuttering and sometimes cutting out altogether. The other channels on C54 and C48 were mostly fine. The signal strength was a constant 70% or more on all but Quality fluctuated wildly on C61, often falling from 100% to 40% and sometimes lower while staying constant on the other channels.

Why would different channels, apparently with the same power rating behave so differently? Is there anything to be done without replacing the aerial. Maybe a signal booster?

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Pogle's 3 posts GB flag
Wednesday, 28 December 2011

1:19 PM

The Humax box has stopped working yet again. If this is for the same reason as given before [see my entry for 22nd December], just what is happening to digital transmissions?

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bruce's 51 posts GB flag
bruce's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Thursday, 29 December 2011

6:15 PM

My Humax box is once again working as expected following the s/w upgrade. The reason for the need to upgrade is:-

'We believe that this problem is being caused the broadcasters changing the way that they send out the signals. The unit should now work fine.'

How much more disruption can we expect before digital switch-over is complete?

Are any other freeview boxes experiencing similar issues; feedback would be appreciated!!

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bruce's 51 posts GB flag
bruce's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
7:41 PM

loft aerial fitted serving 46 apartments through an channel reception problems for two years until now.cannot recieve itv3,itv4,chan.5.on freq54.have retuned.the apartments have a door camera system fitted which uses an analogue signal which is signal connected to the input side of the digital amplifier serving all the t.v sets in the apartments.could this be the problem.please help if you can

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DENNIS MARRABLE's 1 post GB flag
DENNIS's: ...

8:34 PM

bruce: Just purely out of interest, what model of Humax box are you referring to? as these are amongst the best boxes around in the technical sense and so I am rather intrigued as regards to the model that is seemingly causing you so much problems.

I also noted that you predicted as having excellent reception from Mendip on the main PSB muxes, and although the predictor indicates the same on all six muxes I feel that ArqA and ArqB (Ch67 & 52 respectively) could be a bit glitchy side as they are on much lower power until the end of next March.

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jb38's 7,179 posts GB flag

9:34 PM

DENNIS MARRABLE: It could well be! if the analogue signal used by the door camera system is going through the same distribution amplifier used to feed the TV's "if" its tuned to either the same, or very near to Ch54 from Mendip.

The only positive way of verifying (or not) if this is the problem being to temporarily pull its connection to the amplifier out, "not" switching the amp off or the TV's will obviously be affected.

If this proves to be the problem then the cameras analogue signal will require to be tuned elsewhere, the difficulty being that you have to watch you don't clash with one of the other five multiplex channels used by Mendip.

If the cameras modulator has a channel indicator set it to anything under Ch45.

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jb38's 7,179 posts GB flag
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