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 25/11/2024 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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Wednesday, 27 March 2013
Dave Lindsay - Many thanks for reply. Apologies - I've only just seen it. Yes, I think we do have a communal aerial. Have tried manual retunes on 2 of our 3 TVs, but got nowhere. Lost all BBC - as well as ITV3, 5*, 5USA which we lost some time ago - on all of them. Don't suppose you can suggest any solutions? Thanks...
Alison
PS BBC R4 FM reception virtually nil here too! Do listen on laptop, but would prefer via Freeview.
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Alison: If the issue is with the aerial system then it's probably out of your hands and should be reported to the party responsible.
I asked if it is a communal aerial system because they are sometimes filtered so as to only let through (from the aerial) the channels/frequencies that are used by the transmitter.
Refer above under the heading "How the transmission frequencies change over time". Down the left-hand side are channels numbers and left to right is time (years). C49, BBCA (BBC standard definition services) has never been used before. C48, which is SDN (ITV3, 5*, 5USA etc) had never been used prior to switchover. If you lost COM4/SDN at switchover (Spring 2010!) then that might be because it is being filtered out and the aerial system hasn't been adjusted accordingly.
For a full list of Freeview services by multiplex, see:
DTG :: DTT Services by Multiplex
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Thursday, 28 March 2013
B
Becky 8:43 AM
I retuned my tv last night which is plug into possible a comunnal ariel and have no C49 C48. However my second tv is corrently using a set top ariel didn't need a retune and has all channels
Have followed instructions on here and still can't find my BBC channels what will need to be to the communal ariel to sort this??
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T
Tony Ellis9:10 AM
@Dave Lindsay: thanks for your time. I think you're right, we were receiving the Mendip transmitter - certainly we had dozens of commercial channels. Will talk to our management company.
The retuning I mentioned: on Mar 15 I found we suddenly had interference on most channels. A retune fixed it. A few days later another was needed which I think is when we lost the COMs. I assumed it was all part of the ongoing reshuffle.
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J
Jonathan9:33 AM
Radstock
I retuned yesterday to C49, got all its channels at full strength and quality all day, even after switching off and on again... This morning (9.20am) they have all vanished - blank screens/"no signal" - though it still claims 10 for strength and quality on the tuner for C49. Other multiplexes okay. Has the maintenance work on PSB1 resumed?
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Jonathan's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Becky : You need to speak to whoever is responsible for the communal aerial system.
It may be fitted with filters that only allow through, from the aerial, the frequencies used by the transmitter. Now some new frequencies are being used any filtering is likely to need adjustment.
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Tony Ellis: Perhaps it was caused by some fault in the aerial system, or at least something outwith your control.
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J
Jonathan12:13 PM
I had to do a second (manual) retune to get C49/PSB1 back - but I've no idea why those stations (and no others) were lost overnight after they'd been accessed and stored yesterday.
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Jonathan: If it doesn't happen again, say no more about it.
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