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Full Freeview on the Mendip (Somerset, England) transmitter

first published this on - UK Free TV
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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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Mendip (Somerset, England) transmitter.

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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 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

PSB2
D3+4
 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),

PSB3
BBCB
 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

COM4
SDN
 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 MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 14 others

COM5
ArqA
 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

COM6
ArqB
 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

LBS
 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
C/D EEEC/D EC/D E TW TW T
C30_local
C32BBCA
C33com7com7
C34D3+4
C35com8com8
C36ArqB
C37C5wavesC5waves
C48SDNSDNSDNSDN
C49tv_off BBCABBCA
C51tv_offLBSLBS
C52tv_offArqBArqBArqB
C54tv_offC4wavesC4wavesC4wavesD3+4D3+4D3+4
C55tv_offcom7tv_off
C56tv_offArqAArqAArqACOM8tv_off
C58tv_offBBC1wavesBBC1wavesBBC1wavesBBCBBBCBBBCB
C61ITVwavesITVwavesITVwavesBBCA
C64BBC2wavesBBC2wavesBBC2waves

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.

Comments
Monday, 18 May 2020
C
Chris.SE
sentiment_very_satisfiedPlatinum

12:20 PM
Chippenham

Richard:

Last year Sony moved a number of their channels to Local multiplexes. See Channel listings | Freeview
The Local (Bristol) multiplex is beamed NNE ish from Mendip - see the maroon polar diagram further up the page. This would suggest hat you are not likely to receive it because you are further to the E, however the Freeveiw/DUK Detailed Coverage Checker does say that you may receive it but the signal is likely to be "variable"!
The multiplex is on UHF channel 30. I'd suggest you try a manual retune on UHF C30 periodically and you might just get it, but it's not likely to be reliable all the time unless you've got a good Group T/Wideband aerial. If you've still got an old Group C/D aerial then you are lucky to be getting the PSB multiplexes!

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Chris.SE's 3,193 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

12:25 PM

Richard:

BTW I'm not in Chippenham :) That's appeared because I was doing a signal check on your area and forgot to remove it before posting!

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Chris.SE's 3,193 posts GB
Tuesday, 9 June 2020
Transmitter engineering
sentiment_very_satisfiedOwner

7:28 PM

MENDIP transmitter - DAB: Slightly reduced power due to a fault from 25 Aug 14:56 until 25 Aug 15:03. . [BBC]

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Transmitter engineering's 138,029 posts xx
Friday, 12 June 2020
A
Anthony
8:48 PM

Where can I find the frequencies for my transmitter so that I can do a manual retune? Thanks

link to this comment
Anthony's 8 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

11:44 PM

Anthony:

Mendip uses the following channels C32, C34, C35, C36, C48, C33, C36, C55, C56, C30
That's is the order PSBs1-3, COMs 4-8, Local mux. You may not receive the Local mux at your location.
Please note that at short notice COM8 is closing on June 22nd some channels are moving to COM7 and other multiplexes, some channels are closing.
See 22 Jun 2020 - Important channel broadcast changes | Freeview
For the channels on each mux see Channel listings | Freeview although there was some minor changes on 2nd June and the list hasn't been updated!
If you want the Frequency of each UHF channel, hover over each of the channel numbers above in this post.


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Chris.SE's 3,193 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

11:46 PM

Anthony:

Sorry Typo in the previous post, I've got C36 twice, the first in the wrong place, should be after C33.

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Chris.SE's 3,193 posts GB
Sunday, 21 June 2020
N
Neil
11:07 AM

I've just installed a new Sony Bravia tv and have intermittent HD channels on C35 and C48 groups, C35 was fine last night, weak this morning and now my TV has removed the channels again. Is this being affected by the work being done? This is my first Freeview HD television after replacing a 13 year old so frustrating it's not working as expected straight out of the box.

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Neil's 6 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

8:01 PM

Neil:

There's no reported transmitter issues or maintenance at present, but there has been some variable "Tropospheric Ducting"around recently and it's likely to be so over the next few days (see https://www.bbc.co.uk/rec…iew) which may have been the cause of the issues, it doesn't necessarily affect all frequencies the same at the same time.

You say "my TV has removed the channels again". Is this because it found no signal and automatically did a retune, or did you instigate a retune? If it was automatically, I suggest you turn off this functionality as you may find channels disappear unexpectedly if there is any signal issues.
Retuning when there is no/very weak signal will usually just clear the correct tuning, you then have to repeat retune when signals are normal.

C48 is the SDN multiplex which is SD, C35 is the BBCB HD mux the other two are COMs 7&8 C55&C56.
You can keep an eye on when a manual retune may be required from this page Service updates | Freeview
As it happens, there is a retune event tomorrow see 22 Jun 2020 - Important channel broadcast changes | Freeview programme channels are moving off COM8, HD ones that aren't closing to COM7 and some SD ones may go to COMs 5 and/or 6, no detail confirmed. Arqiva have made a commercial decision to close COM8 which will go off-air on the 30th June.

Have you previously had any signal problems with C48 SDN/COM4? It maybe that your "normal" reception may be variable. We'd need a full postcode to see what the Freeview Detailed Coverage Checker predicts for your location.

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Chris.SE's 3,193 posts GB
Monday, 22 June 2020
N
Neil
8:21 AM

Same issue again today. Strength and quality were 99&100 last night and watched HD channels 101 to 105. This morning no 101/2 and signal 75/50 although nothing here has changed/moved.

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Neil's 6 posts GB
N
Neil
8:30 AM
Trowbridge

Chris.SE: thanks, sorry didn't see your update before posting a further update this morning. I'll need to check to turn off the auto updates. The postcode is BA14 6QR. Thanks

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Neil's 6 posts GB
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