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 22/04/2024 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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Monday, 4 December 2023
Transmitter engineering
5:11 AM
5:11 AM
Mendip transmitter - Mendip transmitter: Possible effect on TV reception week commencing 04/12/2023 Pixelation or flickering on some or all channels [DUK]
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Peter Salmon8:22 AM
Bath
Good morning,
My postcode is BA2 7ES and I've had a full blackout on both TV and Radio via Freeview for the last 24hrs (still no reception this morning).
Are there currently any engineering works or problems with the Mendip transmitter that might cause this?
I live in an apartment building with a shared antenna, amplifier and distribution system. Other occupants of the building are experiencing the same issue, therefore I initially want to rule out any issues with the Mendip transmitter.
Many thanks,
Pete
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Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
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StevensOnln110:45 AM
Peter Salmon: There's an engineering notice warning of work taking place at Mendip this week immediately above your post.
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Peter Salmon12:04 PM
StevensOnln1
Hi, yes I saw that message re the engineering work, but it states that work was starting today and that there would only be some pixelation or flickering, whereas I completely lost all channels yesterday (possibly before that as I only tried at around 0900 yesterday).
But I do agree that it's more than likely related to the engineering work, as it has been intermittent this morning, currently at 1201, I have no channels at all, but when I tried at 0900, all channels were back.
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Chris.SE2:18 PM
Peter Salmon:
Engineering work has been going on at Mendip off and on for a few weeks. It was also listed last week.
There have been some brief interruptions to some signals and currently some of the multiplexes seem to be on reduced power or the Reserve Antenna (lower down the mast).
However, you should not have had a "full blackout" for the last 24hours.
I hope you haven't made the mistake of retuning when you had no signal because this will most likely just clear your correct tuning, you cannot tune to signals that are not there, nor should you do so if they are badly pixellated.
If you aren't retuning, and the fact that others in your building are having the same issues, it rather sounds like the installation there is not upto scratch or has a fault, as the location should have no problems with reception and the current work wouldn't be leaving you all with no signal for extended periods.
I'd suggest you all get onto the building management to get the system checked out.
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Peter Salmon3:30 PM
Chris.SE
Thanks for the information......No, thankfully I haven't made the mistake of re-tuning.
I think our problem maybe related to the maintenance, as it has been intermittent (fully available at times) which suggests our reception/distribution system is functioning.
If the reserve antenna lower down the mast is being utilised for some channels, then I suspect my building aerial will will lose those channels as we will more than likely be obscured.
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Here in Trowbridge, suddenly got weak signal and breakup on the following COM4 SDN H max C48 (690.0MHz), can a engineer confirm please this may be the result of work on transmitter, channels effected below, thx
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, VisionTV, Racing TV, Arise News, Kiss Chat & Date, Proud Dating, ADULT Xpanded2, WION NEWS, 16 QVC, 22 TJC, 37 QVC2, 212 Pop Player, 237 TalkTV, 263 SonLife, 264 FailArmy, 265 On Demand 365, 266 Pet Collective, 268 AlJazeera Arabic, 270 Real Crime, 271 Channelbox, 272 Asharq News #2, 274 Asharq News, 275 Al Arabiya, 276 Shots!, 277 UK RADIO PORTAL, 278 Zee World, 279 Alaraby Network, 280 Rok, 281 Revelation TV, 282 God TV, 283 3ABN, 284 AmazingDiscoveries, 286 NHK WORLD, 287 Newsmax, 670 ADULT Section (start), 727 Absolute Radio,
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Bristol_Rich4:52 PM
I've hadno reception on anything other than BBC for all of last week again then mysteriously yesterday it's all come back online again...
Today the signal is very pixilated but just about' watchable.
It's starting to become quite frustrating....
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Chris.SE11:35 PM
Bristol_Rich:
A|t the time of posting this, my crude assessment is that PSBs 2 & 3 and ArqB are the only multiplexes not affected by reduced power or on the Reserve Antenna.
As you haven't given a postcode so that I can check predicted reception and the terrain to your locale, it could be that you are slightly too low down, especially using a loft aerial.
Undoubtedly the engineering will be having an effect, but another possibility worth mentioning, is the possibility of a new/upgraded phone msat now giving interference. If it's under test/not fully commissioned that might explain the problem being irregular. Have you had a postcard from Restore TV?
Put your postcode in here https://restoretv.uk/post…ure/ to check if you should have.
If it says Yes, then get in touch with them and request a free filter to see if that helps.
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Chris.SE11:43 PM
Christopher Sercombe:
Yes, I think you've listed all the TV channels on the SDN multiplex, I didn't check your list in detail.
You can find a list of all the TV Channels and which multiplex they are carried on at
Channel listings for Industry Professionals | Freeview
You can sort the listing in which ever manner you like by clicking on the top of the relevant column.
As mentioned above, the SDN multiplex currently appears to be on reduced power or on the Reserve Antenna. Again as you haven't given a full postcode, I can't check predicted reception or terrain in your locale and how it may affect your reception.
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