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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 20/03/2023 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, 30 E4 +1, 35 ITV1 +1 (West),

 H max
C35 (586.0MHz)591mDTG-100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 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, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
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, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 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, 29 June 2020
12:06 PM

Chris.SE: Hi, the aerial is a short flat 8 bar (aluminium?). This connected to a signal booster gives decent reception in good weather but started to break a up in the rain and wind over the weekend. However the old longer 16 bar aerial on a pole in the loft was even worse.

Do I need to update the aerial to something like a 26/48 element that states its designed for freeview and HD? It would need to be loft mounted and without power.

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Neil's 6 posts GB

1:46 PM

Mary Ward:

The signal doesn't come from ourselves, but that aside Seagry Court is a relay transmitter in north Swindon. Is it all channels that you are losing signal or just some, if so which ones? Clearly there's some issue if you keep losing signal, I don't know how much of your system in the flats was checked out, but to look at predicted reception for your location we need the full postcode.

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Chris.SE's 3,337 posts GB

1:52 PM

Mary Ward:

Sorry, I missed it before I posted, I also meant to ask how long has this been happening? And, the Seagry Court transmitter is currently listed for Planned Engineering with "Possible service interruptions".

link to this comment
Chris.SE's 3,337 posts GB

2:23 PM


All UHF TV aerials are "designed" for Freeview and HD. It doesn't matter if it's analogue or digital, the signals are all Radio Frequency (RF). Those sort of terms "designed for Freeview and HD" etc are nothing more than advertising gimmicks usually used by people that don't properly understand what they are selling and want your to buy a particular aerial.
We need to discover what is going on before you rush off to spend money as it doesn't sound right that this "16 bar" is giving a worse signal unless it's a different type of aerial, so stick with it a bit. It could be faulty for some reason.

Does this bigger aerial look identical to the smaller one just longer? Do either of them have a "reflector" on the back - a larger metal plate/grid?
Your description of the smaller aerial makes it sound like a log periodic.
Do the aerials look something like these -
Log Periodic Tv Aerial for sale | eBay

That's not a hint or suggestion to buy any of them!

link to this comment
Chris.SE's 3,337 posts GB
Sunday, 5 July 2020
Transmitter engineering

4:33 AM

MENDIP transmitter - DAB: Slightly reduced power due to a fault from 5 Jul 02:51. . FM: Off the air due to a fault from 30 Jun 04:04 until 30 Jun 04:14. . [BBC]

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Transmitter engineering's 139,672 posts xx
Transmitter engineering

7:28 AM

MENDIP transmitter - DAB: Slightly reduced power due to a fault from 5 Jul 02:51 until 5 Jul 05:11. . FM: Off the air due to a fault from 30 Jun 04:04 until 30 Jun 04:14. . [BBC]

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Transmitter engineering's 139,672 posts xx
Tuesday, 7 July 2020
Transmitter engineering

7:28 AM

MENDIP transmitter - DAB: Slightly reduced power due to a fault from 5 Jul 02:51 until 5 Jul 05:11. . [BBC]

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Transmitter engineering's 139,672 posts xx
Thursday, 23 July 2020
bruce tearle

5:46 AM

Have lost channels 1 [BBC1] this morning. First channel I can receive is channel 11 [pick]. I have tried the reset instructions and a different aerial input to my system - NOTHING.

Receiving normally from Medip Transmitter, my post code is BA21 4nw

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bruce tearle's 50 posts GB

7:01 AM

bruce tearle:

Your predicted reception is excellent. Are your signals back?
It seems to be up and running with pretty much normal signal levels on all multiplexes. I can't find any fault reports listed at present.

link to this comment
Chris.SE's 3,337 posts GB
bruce tearle

11:32 AM

Hi Chris

Thanks for response.

The channels I have are:- 7 44. There may be more above 44 but have not gone there.

Thanks again.


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bruce tearle's 50 posts GB
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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