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Full Freeview on the Mendip (Somerset, England) transmitter

first published this on - UK Free TV
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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.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C32 (562.0MHz)591mDTG-100,000W
Channel icons
1 BBC One (SD) West, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 16 others

PSB2
D3+4
 H max
C34 (578.0MHz)591mDTG-100,000W
Channel icons
3 ITV 1 (SD) (West), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (West),

PSB3
BBCB
 H max
C35 (586.0MHz)591mDTG-100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H max
C48 (690.0MHz)591mDTG-8100,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Al Jazeera Eng, plus 19 others

LBS
 H -10dB
C30 (546.0MHz)591mDTG-1210,000W
Channel icons
from 22nd September 2014: 7 Made in Bristol,

DTG-8 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?

regional news image
BBC Points West 0.9m homes 3.4%
from Bristol BS8 2LR, 25km north (3°)
to BBC West region - 60 masts.
regional news image
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?

CheddarTransposer15 km E Weston-super-Mare1674 homes
LuccombeActive deflector6 km w Minehead38 homes

How will the Mendip (Somerset, England) transmission frequencies change over time?

1984-971997-981998-20102010-132013-182013-1727 Feb 2018
C/D EEEC/D EC/D E TW TW T
C30_local
C32BBCA
C33com7com7
C34D3+4
C35com8com8
C36ArqB
C37C5wavesC5waves
C48SDNSDNSDNSDN
C49tv_off BBCABBCA
C51tv_offLBSLBS
C52tv_offArqBArqBArqB
C54tv_offC4wavesC4wavesC4wavesD3+4D3+4D3+4
C55tv_offcom7tv_off
C56tv_offArqAArqAArqACOM8tv_off
C58tv_offBBC1wavesBBC1wavesBBC1wavesBBCBBBCBBBCB
C61ITVwavesITVwavesITVwavesBBCA
C64BBC2wavesBBC2wavesBBC2waves

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

Jan 1958-Jul 1968Television Wales and the West
Jul 1968-Feb 2004Harlech Television
Feb 2004-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Mendip was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Comments
Friday, 30 September 2011
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

3:13 PM

Rod Roberts: The overall signal levels have been increased this week as well as the changes to channels. I suppose it's possible that you could have too much signal, although I would have expected that to affect the more powerful multiplexes, not the weakest. See Freeview signals: too much of a good thing is bad for you | ukfree.tv - independent free digital TV advice

link to this comment
Mike Dimmick's 2,486 posts GB
C
Chris.SE
sentiment_satisfiedSilver

3:19 PM

Rod Robert:
As Mike has suggested, you might be getting too much signalnow that SDN's power has gone to 100Kw.
Try taking your booster out of circuit to see if that makes a difference.

link to this comment
Chris.SE's 251 posts GB
C
craig
3:20 PM

Hi

I live at BS15 and I cant get any of the channels in MUX48 at all. Ive retuned umpteen times manually and automatically. Ive rang the digital switchover people and have been told that i "should just keep trying as it make take 2 weeks before I can get them as work may still be on going" - is this correct?

link to this comment
craig's 3 posts EU
C
Chris.SE
sentiment_satisfiedSilver

4:12 PM

If Digital UK told you that, they are talking complete and utter rubbish. Thge changes went fine and are complete, everything is working.

Try a full factory reset of your equipment & new installation scan with the aerial unplugged and the plug the aerial in and do a new installation.
See the link for the Freeview reset procedurein the yellow box below for more detail.

link to this comment
Chris.SE's 251 posts GB
C
Chris.SE
sentiment_satisfiedSilver

4:17 PM

Craig: In addition to my suggestion above, the power has now increased on the SDN mux on C48. It is possible you are getting too much signal. If you are using a Booster/Amplifier try taking it out of circuit and try again.
See Freeview signals: too much of a good thing is bad for you | ukfree.tv - independent free digital TV advice for more detail.

link to this comment
Chris.SE's 251 posts GB
R
Rod Roberts
5:33 PM
Melksham

Rod Roberts

have managed to get skynews on 821 of channel list but cannot get picture.

link to this comment
Rod Roberts's 5 posts GB
C
craig
5:46 PM
Bristol

Chris E

Thanks for that - already tried the full reset/retune without the aerial plugged in. Guess will have to try getting a attenuator. I live in a block of flats with communal aerial so I dont know if there is a booster/amplifier fitted. When you go to MUX 48 the Signal shows as Nil and the Strength shows as Nil as well.

link to this comment
craig's 3 posts GB
B
Billy
sentiment_satisfiedBronze

6:02 PM

Surely I'm right when I say those transmitters, likely for interference with others are operating different signal powers have completely messed up, for those who live some distances away.
Guess depends on distance, but lets say few years back, Mr X and family have Aerial installer put in some X high gain aerial with masthead amplifier on.
Lets also say they live maybe 20 plus miles from transmitter, and lets say they got about, oh I don't know 80% signal Strength or more and 80% plus quality.

Now, Bang, switchover comes and power gets boosted, good for the fringe people like me, fringe cause of the dip and hill in way etc.

But Mr X is now told, online on some site like this, too much signal.
So he buys an attenuator.

Ar ha, here we have a problem.
Before switchover we have all Muxes on say 8,000 and now public ones are on say 50,000, like Waltham, but hang on, we have SDN and Aqiv on less than that, oops.
So by reducing, and getting back the BBC and ITV, he now starts to lose, or get break up sometimes on commercial ones.

I could be wrong, but that's my thinking.
This is why Sutton Coldfield, despite initial problems some seem to be having should work out better, as all are on and at 200,000 kws.

link to this comment
Billy's 50 posts GB
T
tom
6:30 PM

hmm, disappointed with the loss of dave / c67 /com5 arqa in the sn16 malmesbury area, but I do now have film 4! Would be tempted to get a bigger aerial, but this will probably cause more issues in march. Cant they send more channels out on the high power MUX?

link to this comment
tom's 3 posts GB
C
Chris.SE
sentiment_satisfiedSilver

6:44 PM

Craig:
Hmmm, flats. It is likely that there is a distribution amplifier, but also distribution may be channelised, ie. nothing set up for C48 or even filtered by band (C/D). Ch.48 is right on the bottom of C/D and any filtering could kill it.
Did you have any problems when Arq B moved upto C67 in January or problems at the main DSO events last year?
Are you getting Arq B OK now it's on C52?
What sort of signal strength are you getting on the other MUXes? - If they are all at the top of the scale attenuation may help - one trick you could try is pull the coax plug out of the back of the receiver and then hold it in position so that it's not fully home - the idea being the outer is connected but the inner isn't but it's that close you get some coupling with attenuation. If that works then an attenuator may do the trick.
Worth checking also with other people in the flats to see if they have similar or identical problems, because if none of what's been suggested works and others in your block have the same problem, you need to get onto the landlords for them to get it sorted.

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Chris.SE's 251 posts GB
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