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.
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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Tuesday, 25 January 2011
S
sbmarlborough3:31 PM
Marlborough
Hi Tim
Same here and I have lost those on C67 too, they have changed the modulation which appears to manifest itself as a poorer signal on some equipment.
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sbmarlborough's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
G
Gareth3:53 PM
Update from Chippenham.
The current situation is: I have all Channel67 progs on 1 V Box, 1 Set top box, and 1 iDTV, but not on another iDTV. I have replaced a splitter and about 15 metres of coax cable. However, on all devices there re Channel 56 progs with sound but no vision. Everything was hunky dory prior to the January 11th retune debacle just to get ITV1+1 from Wales.
Has anybody noticed that there are 3 channels ITV Preview 1 which broadcasts (ITV Nightscreen) for 2 hours per day, Home broadcasting for 1 hour per day and Big Deal for 1 hour per day. Talk about wasting resources. Whose idea was it to have Mendip transmitter 'liable to disruption' less than 7 days after the post retune problems started?
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Alex
3:58 PM
Broadway
3:58 PM
Broadway
Higher modulation = greater compression... higher liklihood of drop-out, interference, etc. Get Freesat instead, it's just easier.
Freeview used to be all 64QAM, which was why it was rubbish under ITV Digital... all the BBC bits are 16QAM now, which is why they're better.
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Alex's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
M
Miss Moppet7:56 PM
Anyone needing answers try the Arquiva Mendip Transmitter man, Bruce Randall, on 01962 822582. Friendly helpful chap. He claims that 99% of problems are caused by not having a roof aerial, but like the rest of you I've had a perfectly good signal from a loft aerial, till recently.
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Wednesday, 26 January 2011
M
michael9:45 AM
Bruce is right. Exceptions "prove the rule" - such as when all muxes radiate final full power. Unless close to and within view of the mast, a good quality roof aerial, sat-quality cable and good connections are advisable.
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T
Tonyn6:17 PM
Chippenham
Something very strange : I have a Panasonic digital TV downstairs and an old Philips digibox upstairs both fed from the same roof aerial. Following the Mendip changes I have rescanned both and also done the whole clear-down procedure you suggest. No matter what I do the "Blue" service stays on LCN 190 on the Panasonic TV, but correctly moves to LCN 98 on the Philips box. Everything else is OK. Any ideas ?
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Tonyn's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
P
peter9:13 PM
Blakeney
Following the recent Mendip changes I re-scanned. I can no longer get Sky News. Additionally the signal on many Non BBC channels is variable, ranging from pixel freeze to unwatchable
My daughters got TVs for their bedrooms at xmas. Splitting the cable may have caused some of my problems, but I could definitely got Sky news on the main TV after the aerial was split. On one of my daughters TVs Sky news is still available. My gut feeling is that my problems are partly due to splitting the aerial.
Anybody got any ideas?
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peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Thursday, 27 January 2011
peter: I would try this My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | ukfree.tv - independent free digital TV advice - the multiplex with Sky News on it was not changed.
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D
distressed7:12 AM
I have no channels at all this a.m.? Was fine until around midnight last night when I went to bed! It's asking me to check that the aerial is properly connected. It is. I have rescanned, turned off and on, etc, and still nothing? Is there a problem?
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