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 29/05/2023 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, 2 February 2017
Col: Look at the links your postcode has brought up - there is an obstruction about a km from you, but other than that, your 35km with a clear signal path, and Digital UK reckons you should be fine.
You havn't said what the signal STRENGTH is - very high or very low? If it was always low because of the obstruction, then a booster isn't going to help that much - personlly, I'd just go Freesat. But if your signal is actually fine, then the booster might be causing more problems than its solving. If your all using boosters, and your all having the same problem, then it might the fact that your all using boosters that IS the problem. And if the booster etc isn't working properly, then that would kill your signal.
Yes, your neighbours are having problems, but are they the same problems? If they are, then could it be a high pressure system? But that would lead to a lot of people losing signal. The transmitter seems fine, so its not that. You might have a problem with your system, but it might be a different problem from the others.
Check your signal strength, and the same goes for the others. If its very high, try taking the booster out of the circuit - and then see what strength/quality is like. In the meantime, search for 'too much of a good thing' on this site.
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MikeP
6:21 PM
6:21 PM
Col:
As I use Mendip as my primary source I know there are no transmitter problems that would cause the symptoms you state. Follow the advice given by MikeB.
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Thursday, 9 February 2017
C
Chris.SE7:23 AM
Col: & others
I also use Mendip as my primary signal source and can also confirm that there are no transmitter problems - which in any event would be reported here if there had been any.
As has been said many times in the past, weather patterns can have significant effects on signal propagation, and that is not just whether it's raining or there is a high pressure system (although the latter frequently can have an effect) it is far more complicated than that. So if you have a "marginal" signal - which can be either because the signal is weak OR too strong, then changes in propagation can result in changes in signal strength and/or changes in co-channel interference which can result in intermittent loss of the wanted signal. It's also possible for mobile phone signals to cause problems especially if aerial amplifiers are in use.
The result of this with digital signals can be pixelation, intermittent sound and/or (intermittent) complete loss of signal.
Col: As you say "yet again", follow MikeB & MikeP's advice - there is no point in me repeating it.
You mention you all have to use boosters otherwise you don't receive anything BUT was that based on a need prior to full digital switchover in April 2010?
Where is the "amplifier" located? is it at the aerial or indoors somewhere?
Look at the Tuning section of your TV's programming and look at the strength and/or quality of the various signals with and without the amplifier. You mention dropping to 1 or 2 but don't say what it "normally" is, or what the scale on your particular TV is, the maximum may be 5 or 9 or 10 etc.
Also check that your are in fact correctly tuned to the Mendip UHF Channel Muxes (and not any of the Wenvoe ones).
Lastly, there is a Mobile Phone mast located quite close to you just off the line-of-sight, so when you have checked all the previous suggestions have a visit to at800 | 4G & Freeview | 4G interference | 4G Filters | 800 MHz , you might (note I said might) need a filter.
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Sunday, 19 February 2017
Transmitter engineering
4:32 AM
4:32 AM
MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 02:38 today to 02:46 today. [BBC]
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Monday, 20 February 2017
Transmitter engineering
4:31 AM
4:31 AM
MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 02:38 yesterday to 02:46 yesterday. [BBC]
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J
James Edmund7:53 PM
Hi there,
I've lost all the HD channels since Sunday about 5pm
I am in Corsham in Wiltshire so expect the mendit transmission tower to be relevant.
Please let me know if there is anything causing this.
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Tuesday, 21 February 2017
Transmitter engineering
4:31 AM
4:31 AM
MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 02:38 on 19 Feb to 02:46 on 19 Feb. [BBC]
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MikeP
8:28 PM
8:28 PM
James Edmund:
The onl;y work listed for Mendip is related to the DAB services only. So you may have a poor connection in the cables between the aerial and your equipment.
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Friday, 24 March 2017
I
Iain Davies7:22 AM
I take it that after the big channel change in 2019 that all the tx channels will be HD to carry all the programmes we have now on the 9 tx channels we have.
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Transmitter engineering
1:33 PM
1:33 PM
MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 11:07 today to 11:25 today. [BBC]
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