Full Freeview on the Mendip (Somerset, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 51.237,-2.626 or 51°14'12"N 2°37'33"W |  | BA5 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 18/11/2024 Pixelation or flickering on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
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 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.
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?
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?
| Cheddar | Transposer | 15 km E Weston-super-Mare | 1674 homes |
| Luccombe | Active deflector | 6 km w Minehead | 38 homes |
How will the Mendip (Somerset, England) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2010 | 2010-13 | 2013-18 | 2013-17 | 27 Feb 2018 | |||
| C/D E | E | E | C/D E | C/D E T | W T | W T | |||
| C30 | _local | ||||||||
| C32 | BBCA | ||||||||
| C33 | com7 | com7 | |||||||
| C34 | D3+4 | ||||||||
| C35 | com8 | com8 | |||||||
| C36 | ArqB | ||||||||
| C37 | C5waves | C5waves | |||||||
| C48 | SDN | SDN | SDN | SDN | |||||
| C49tv_off | BBCA | BBCA | |||||||
| C51tv_off | LBS | LBS | |||||||
| C52tv_off | ArqB | ArqB | ArqB | ||||||
| C54tv_off | C4waves | C4waves | C4waves | D3+4 | D3+4 | D3+4 | |||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | ArqA | ArqA | ArqA | COM8tv_off | |||||
| C58tv_off | BBC1waves | BBC1waves | BBC1waves | BBCB | BBCB | BBCB | |||
| C61 | ITVwaves | ITVwaves | ITVwaves | BBCA | |||||
| C64 | BBC2waves | BBC2waves | BBC2waves |
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
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Thursday, 17 June 2021
B
bruce james tearle12:44 PM
Hi
Yes, a definite typo!!
Thanks again for info. All seemed good this morning signal wise, just wish theBroadcaster could get their audio sorted!!
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Saturday, 26 June 2021
K
Kelvin Smith8:50 AM
Stonehouse
Chris.SE & StevensOnln1: Thanks for your comments regarding quality problems on HD channels on channel 35.
My current set-up is a new wide-band aerial fitted about 2 meters higher than my chimney. The cable goes to the attic where there is an Wolsey LTE WFAV425 powered slitter feeding 3 TV's. It has a variable gain pot and I have tried different settings without any improvement. So did the guy who installed the aerial. At the time channel 35 was so bad the TV's tuned themselves to Wales HD, which was fine (although sometimes had picture breakup), until I re-tuned to get GBNEWS and now they they have gone back to channel 35.
I guess I could re-tune and pull the aerial connector out when it gets to channel 35 and put it back in at channel 36, but that's going to be a bit hit and miss...
All RG6 coax cables are new and of good quality as are the F-connectors.
If I connect my main TV directly to the aerial, I get the following results;
Ch Sig Qty BER
32 30 100 0
33 18 60 0
34 14 50 0
35 no signal
36 10 13 0
37 no signal
48 50 100 0
55 26 100 0
There are no HDMI cables connected on any of the TV's
To me the problem seems more related to weather conditions more than internal interference as sometimes everything works fine. I have turned of my broadband router that is also situated in the attic, just in case... along with everything else I can think of but no improvement...
Turning the aerial to Ridge Hill is an option, but the aerial guy said the signal wasn't any better in that direction. Unfortunately his signal box couldn't measure channel 35! Anyway I prefer HTV West news.
Any other thoughts of what I might try given this additional information??
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Kelvin's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
C
Chris.SE4:29 PM
Kelvin Smith:
Does your set not have a manual tuning option? If so you can pick the individual channels it tunes to, and I would leave out C37 (unless you are keen to get the Wenvoe local multiplex as you can't get the Local one from Mendip on C30).
Thanks for the figures for the aerial direct to the TV, quite interesting. Not surprisingly you are getting more signal for the higher frequencies as most aerials have more gain at the high end.
This time there's no signal on C35. Considering the figures when the amp/splitter is connected, and comparing it to the other adjacent channels, I say it was likely interference due to Tropospheric ducting.
My guess for the most likely bet is Huntshaw Cross in North Devon it uses C32, C34, & C35 for its COM muxes.
So you might from time to time see issues with PSBs 1 & 2. Don't forget that propagation in such conditions can be very frequency dependant so it won't necessarily affect them all.
Well done for checking possible interference from other sources such as your router.
As for tuning, if you can't manual tune, pulling out the aerial plug at the appropriate time is an option some have used, but as you say it can be hit and miss. Tropo predictions suggest there could be more about in the next few days (even the BBC have a current warning).
Ridge Hill does have a better prediction for you but you'd lose BBC Points West, you can get ITV West on C29 as it has that as well as Midlands on C25.
When conditions are more settled you can see which HD mux, Mendip (C35) or Wenvoe (C47) gives the more stable reception. I doubt there's much more you could do, especially if you can't move the channel LCNs to where you'd want!
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Sunday, 27 June 2021
Chris.SE: Thanks Chris for your help. I think I'll get the aerial moved to Ridge Hill moved to Ridge Hill and forgo HTV Wetry I'll and see how that works out. Bye bye HTV West...
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C
Chris.SE10:46 PM
Kelvin Smith:
Don't forget they're only predictions. Get your installer to check the actual received strengths with his meter - actually the same goes for Mendip, sometimes a skight tweak of the aerial can make a difference.
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Thursday, 15 July 2021
R
Roy Lewis9:09 PM
Mendip transmitter
The LBS station for 'Bristol TV' given above as C51 714MHz seems to be in error and out of date.
Currently available as multiplex C30 546MHz and tuning station 7. Agreed?
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R
Roy Lewis9:11 PM
Bristol
Mendip transmitter, received at BS48 2UF, aerial in loft.
The LBS station for 'Bristol TV' given above as C51 714MHz seems to be in error and out of date.
Currently available as multiplex C30 546MHz and tuning station 7. Agreed?
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Roy's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
C
Chris.SE10:38 PM
Roy Lewis:
Correct. As has been mentioned several times around this site and now several pages back for Mendip, the site owner has not had time to keep up with the many changes resulting from the 700MHz Clearance programme and this is one of the errors, although the Local mux was recently mentioned just a couple of pages back.
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