Full Freeview on the Mendip (Somerset, England) transmitter
Brian Butterworth first published this on - UK Free TV
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.
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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, 12 October 2011
M
mike4:07 PM
For a long time had problems with channel 67 reception on retune lost all 52 & 67 tried everything so replaced my stb with a Sony DT 500 tv recorder now receive all channels with such a high signal & quality levels have had to remove aerial amp I am in a poor signal area in Poole get good reception now from Mendip in all weathers consider extra expence well worth it.
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C
Chris.SE4:30 PM
Brian Hudson: When Arq A (COM5) moved to 67 on Sept.28th, the Mode changed to 8k (the same as Arq B was before the 28th). If you had reception problems with Arq B previously then you will continue to have problems with Arq A until the power increase next March.
I previously didn't have a problem and reception was OK immediately after the 28th. changeover, and strength seemed similar to before. Now however, the strength seems somewhat lower and I've noticed that they are supposedly transmitting with 3/4 FEC instead of 2/3 FEC as previously, according to Digital UK's Trade view page. This change will have the effect of reducing the noise margin by 1.5dB or so as far as I can see, which means if you have marginal reception you may lose it all together. However as some of the other information there in relation to the COM muxes is wrong, I cannot be certain and I'm investigating further, but it would explain the current poorer reception.
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C
Chris.SE4:44 PM
Brian Hudson: Apologies, I can't remember where the Arq A FEC info came from, I'm checking further.
Mr Mendip: If you lose programmes on Arq B, then you will have to retune UHF C52. I don't know for certain, but I suspect it may be box/set dependant.
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Thursday, 13 October 2011
J
jaime1:13 AM
Dursley
I currently can't receive c5 why would this be. Sky box doesn't say no signal or technical fault.
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jaime's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Wednesday, 19 October 2011
C
Ceejay7:39 AM
I live in Midsomer Norton and have lost all channels in the com 5 section. I have only 85 channels when I retune,, except once a few days ago, when I got 106 . These extra 21 have disappeared again this morning. Help, this is very frustrating.
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Thursday, 20 October 2011
K
KMJ,Derby5:47 PM
Ceejay: Check for single frequency interference on C67, such as an RF modulator of a VCR or Sky box set to C67/C68.Also check cables and connectors. You are predicted (using the postcode of the local primary school as a reference) to have good reception on all muxes from Mendip.
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Thursday, 27 October 2011
P
Paul1:30 PM
Since the last retune at the end of september I've had problems with com5 & com6, have had the rare day when the reception has been fine but 99% of the time all channels on those 2 have been unwatchable. Windy conditions certainly effect reception on com5 & 6 which wasn't the case prior to the last retune but today com5 & 6 are booming in, 100% on both signal & quality and no fluctuations either, doubt it will last long though!
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Sunday, 30 October 2011
P
paul12:45 AM
In my case it's not too strong a signal that's causing the reception problems with com 5 & 6, the good reception I had only lasted one day, it's unwatchable again now, I still have around 70% signal strength bit the quality is all but gone, it's hovering around 5-10%
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