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.
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._______
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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Saturday, 3 December 2022
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Chris.SE1:14 AM
Worcester
Paul Jennings:
Hi, the reason is you are living in the wrong house, move next door to no:11, ah, but then BBCA and D3&4 could become less reliable,or down the road to no:1 where you might get good reception of all multiplexes from Malvern!!
OK, I jest somewhat, however predicted reception across your postcode is VERY variable. Being more serious , you are rather a long way from Mendip - 109km but nevertheless the Freeview & BBC predictors suggests good reception of a variety of multiplexes but which ones depends on where you are in the postcode and that even for your most likely transmitter Malvern (also the closest).
I started compiling this reply a while ago and got interrupted. I see StevensOnln1 has made some suggestions.
It's obvious you live in a very awkward spot. The question we don't know the answer two is are you using Mendip because you want the West Region, whereas Malvern is Central, but with hills and trees you might not get reliable reception. The reason it can be so variable is not just the very local obstructions and terrain, but the path to the transmitter of interest as well as paths to other transmitters that might give interfering signals.
A knowledgeable (must know your specific area!) local aerial installer should know what might be achieved, an aerial even in a different location on your house could give different reception! Using street=view, I see someone down the end of your road seems to be getting their signals from Waltham on a very tall mast!
Looking at the Freeview predictor, Malvern, Mendip and Waltham are the only potentially serious contenders for likely reliable reception.
I would not however use a wideband aerial. I would choose a high-gain Group K Log-periodic. There are now a few manufacturers doing Grouped Log-periodics. Group A and Group K are both available, but you need Group K (for whichever of those main transmitters is going to give you the best reception).
If you are finding things too variable, you might consider Freesat. A lot of modern TVs have a satellite tuner built-in so you'd only need a dish and LNB.
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Chris.SE's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
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StevensOnln111:11 AM
Chris.SE: Isn't a Group K log periodic the same as a wideband log periodic but with some of the elements removed?
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Chris.SE2:56 PM
StevensOnln1:
Not as I understand it from the performance curves and manufacturers statements that I've seen. Quite a few still have the same number of elements. There's a definite cut-off above C48 690MHz as the design has been "tuned". How exactly they do that I don't know as I'm no expert in aerial design but it's the claimed performance that's important.
As you know Log-periodics have the advantage of a flat (+/-) performance over the frequency range so will do a bit better at the lower frequencies is you have the gain. Whereas a traditional (yagi) wideband, & even grouped, see a fall-off in gain at the lower frequencies.
There's been a significant increase in Log-periods appearing in many places (and certainly round here) especially in the lead up to the COM7 closure and since. They also have the advantage of less side lobes.
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B
bruce tearle3:24 PM
Had set reorder for snooker on channel 12. got screen msg saying retune necessary, did this and found Quest was on 790. did a full return on recorder to get thing right only to find 790 gave a blank screen which 12 was showing r snooker.
What the heck is happening
regards Bruce
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S
StevensOnln15:45 PM
bruce tearle: Quest moved from COM4 to COM6 recently. The old version which was temporarily moved to 790 to give viewers time to retune now appears to have been removed.
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C
Chris.SE5:45 PM
bruce tearle:
There was a change with some "minor" channels on the 23rd November. What Freeview didn't mention was that Quest moved from SDN/COM4 to ArqB/COM6. Only those that did a full retune discovered that after finding nothing or a retune message at LCN12.
The 790 LCN is the old COM4 version which will disappear at a future date.
The lists on this site have yet to be updated by the site owner.
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Wednesday, 18 January 2023
A
alan paterson2:13 PM
last 48 hours lost all channels except channel 32, carried out all retune methods as usual, still only have channel 32 , transmitter is Mendips in somerset approx 40km away, have your mobile mast filter fitted, all equipment is in good order.
Any ideas ?
Thank you.
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C
Chris.SE3:06 PM
alan paterson:
As you haven't said where you are or given a full postcode we can't give any specific information other than there are no reported faults at Mendip. If you are to the north, signals are being received at normal levels. If you are to the south, current weather with any snow may be affecting your signal.
Check that your aerial looks intact and is still pointing in the correct direction and that the downlead is secure and not flapping in the wind. Check all your coax connections behind the TV etc.
Have you altered/changed anything about with your equipment recently? Do you have any distribution amp/splitter etc.?
You are never advised to retune when you have no signal or badly pixellated pictures as this usually just clears the correct tuning. Try a manula retune on Mendip's UHF channels.
Post back with a full postcode if you are still having problems.
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A
alan paterson4:34 PM
Chris.SE:
Sorry ,post code shown. Aerial new 2 years ago, tried new indoor amp to no avail when all this break up first started last year, not been stable since. All equipment is good, TV's are smart TV's less than 4 years old. At one point called in an engineer who checked out all cables /connectors and confirmed strong signal when working from roof top aerial. 70 down the shute. One on line help site sent a free mobile mast filter as they thought a new mast nearby might be causing interference, but not making any difference. Of the channels I should get-32,33,34,35,36, and 48, all I have today is 32 and 36.
Aware of all the retuning /resetting advice, makes no difference, very frustrating.
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Chris.SE8:36 PM
alan paterson:
Sorry, don't understand what you are saying about the postcode - can't see one. Looking at a previous post, if you are in Devizes, most parts should get a good signal from Mendip but without the postcode can't check if you are in a "not-spot" for some of the channels.
Look in your LG's TV Tuning section for Signal Strength and check and post back the figures for Signal Strength and Quality for each of the UHF channels from Mendip - 32, 33, 34, 35, 36 & 48.
You should have 100% Quality on each of those channels.
SOME locations may even get the Local multiplex on UHF C30.
You mention an indoor amp. What make and model is this?
Repeat the figures for each UHF channels with the amp disconnected and turned off, with the aerial plugged straight into the set, not via the amp. Too much signal can cause the symptoms you see especially if you are also getting signals from other transmitters (even when not tuned to them) which some locations in Devizes can get - eg. Wenvoe, Hannington, & Rowridge.
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