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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Monday, 4 July 2011
I
IAN LOGAN12:00 AM
Freeview reception in clevedon, Somerset.
in recent weeks picture on channels 10, 12, 14 has been at times unwatchable - picture breaking up. other channels are usually OK. have three aerials, one recently installed for digital changeover on roof, others in loft. same problems on all three aerials. some neighbours have similar problems.
are there issues with low power on mendip transmitter and some receivers ?
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Tuesday, 5 July 2011
Jim F/Briantist
I have at last solved the problems tuning my Panasonic HDD Recorder. After months of frustration i finally got around to retuning the HDD via the aerial feed in my bedroom, which runs off of a seperate aerial and lead. The HDD tuned in perfectly. I re-connected the HDD downstairs and again had very bad reception/loss of signal. It wasn't until i wiggled the aerial coax input that i found the picture got bad then better. To cut a long story short, i cut about a foot off of my lead, attached a new coax plug and hey presto all channels are now tuned and functioning correctly. Thanks for all your advice!
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Steve's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
Wednesday, 6 July 2011
B
Barry Saltiel6:55 PM
Bristol
I live in Portishead.My aerial is outside
am I in a poor reception area.
My post code is BS20 8HL
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Barry's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
Sunday, 17 July 2011
Barry Saltiel: You're in a really good reception are for both the Mendip and Wevnoe transmitters...
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Wednesday, 27 July 2011
J
John_Ha9:35 PM
The BBC multiplex (62) on Mendip has suddenly started breaking up for me, and judging by the variations in signal strength and signal qality mI am seeing, it is co-channel interference from a distant station.
Can anyone help by pointing me to a schedule which lists the dates of each of the changeovers and the channels on which the main transmitters transmit? I could then track down what might be the intefering station.
I could do it the long way (enterring postcodes appropriate to each main transmitter in the postcode checker) but I would have expected there was a listing somewhere.
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J
John_Ha9:42 PM
Sorry for the typo.
"The BBC multiplex (62) on Mendip" should of course be "The BBC multiplex (61) on Mendip"
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J
John-Ha10:04 PM
I have discovered your link Transmitters has Find Freeview by frequency, and when I enter 61, I get shown all the transmitters transmitting on 61, and their (planned? actual?) changeopver dates.
The Workington relay in Scotland started transmitting its BBC multiplex on C61 on 22 July 2011, so it could be a candidate for causing the inteference with my Mendip signal.
But it broadcasts on only 10Watts. Is it feasible that a 10W signal from Scotland could cause co-channel inteference with a 100kWatt signal from Mendip? I normally receive Mendip 61 at 60% strength and 100% quality but I am now seeing it drop to as low as 40% strength and 10% quality.
All other Mendip multiplexes are OK so it is unlikely it is my aerial etc.
There is no transmitter work reported on Mendip.
Any thoughts will be appreciated!
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John_Ha: There is a list of the switchover order on the UK Digital switchover simulation | ukfree.tv - independent free digital TV advice page.
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John-Ha: If you could provide a full postcode it would be possible to help you out with your reception issues. It is not very likely you would be able to receive a signal from Scotland, even during the Inversion conditions.
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Also Find a Freeview transmitter by frequency | ukfree.tv - independent free digital TV advice lists the frequencies in use at the moment.
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