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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 04/12/2023 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! 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, 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 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 Christmas, 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
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 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.

Wednesday, 28 September 2011
5:08 PM

Yes it is the transmitted descriptors.

COM5 must be very low power.
PSB3 T2 is still missing or gone low power.

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Mal's 6 posts GB flag
Mike Dimmick

5:12 PM

Alex B: Bit of disagreement on Mux A/SDN's current mode. DUK's installer newsletter says it should have changed to 8K mode, the postcode checker still shows it in 2K mode.

The installer newsletter shows FULL power - 100kW - for SDN, and Ofcom show no restriction after today.

Ofcom's licensing information shows ArqA at 26 kW and ArqB at 25.7 kW until 28 March 2012, which DUK's installer newsletter say is to avoid interfering with Salisbury.

(References to these documents are in my earlier post.).

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Mike Dimmick's 2,486 posts GB flag
5:41 PM

SDN is 8k mode

Just done a full spectrum scan still no COM5 or PSB3.

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Mal's 6 posts GB flag
Alex B
6:19 PM

Thanks, Mike Dimmick; now, if only the advisor I spoke to on the phone at DUK had access to the same DUK Installer Newsletter...

Looking forward to being done with these regular retunes...

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Alex B's 3 posts GB flag
Alex's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
7:18 PM

reset and returned and no channels on mux 48
disconnected aerial and turned off box
tried manual retrune and still noc hannels on the mux 48
help please!

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craig's 3 posts GB flag
James C
7:36 PM

I'm all present and correct here as follows
near Highbridge

CH48/690000 SDN
CH52/722000 ARQ-B
CH54/738000 D3+4
CH58/770000 PSB3
Ch61/794000 BBCB
CH67/842000 ARQ-A

A bit of a mission to get a couple of older boxes to scan up right - One needed the 'first birthday' and the other I scanned 'aerial out' and then manually put the muxes in - I eventually got everything with the right channel numbers! - I'm not very optimistic about there being an end in sight, there is the March 28th retune already scheduled and then the new frequencies. More of the same I fear!!!

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James C's 11 posts GB flag
James's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
7:56 PM

ditto dvb-t are all 8k mode

I have reception of both COM5 & PSB3 now.

COM5 along with the rest giving out 754Mhz.

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Mal's 6 posts GB flag
Thursday, 29 September 2011
Jack Sukerman
10:37 AM

Thanks Mike, I've tested with nothing else plugged in so I'm guessing if it is interference its outside the building. Strangely though all other multiplexes are clear as a bell. Could it be that my aerial is not wideband? or would I miss other stuff too if this was the case?



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Jack Sukerman's 3 posts GB flag
12:48 PM


I think that your problem is channel 67 itself. As a higher frequency it is not robust and, for example, does not tolerate coax cable runs as well as lower channel numbers without attenuation even when the transmitted strength is the same.I have exactly the same problem with no reception on two tvs of channel 67 when all other multiplexes are fine, even channel 52 which is transmitted at almost exactly the same power as 67 at 25.7Kw.

Things will not improve until 67 moves back to channel 56 in March. As far as I can see there are no adjacent transmitters on 67 so I don't know why they can't transmit channel 67 stronger than 26Kw from now until March when Salisbury frees channel56 for high power transmission from Mendip.

Good luck


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JimBilly's 6 posts GB flag
D Gadsden
3:33 PM

since yesterday 29th sept I have only been able to get the BBC channels.Trying any other and the screen is blank other than the words NO SIGNAL.Can tou tell me why please??

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D Gadsden's 2 posts GB flag
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