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Full Freeview on the Mendip (Somerset, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.237,-2.626 or 51°14'12"N 2°37'33"Wsa_postcodeBA5 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.

Are there any planned engineering works or unexpected transmitter faults on the Mendip (Somerset, England) mast?

Mendip transmitter - Mendip transmitter: Possible effect on TV reception week commencing 11/11/2024 Pixelation or flickering on some or all channels Digital tick


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, plus 17 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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (West), 71 That’s 60s,

PSB3
BBCB
 H max
C35 (586.0MHz)591mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD West, 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, 107 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 U&Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 U&Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 251 Al Jazeera English, 255 FRANCE 24 (in English), 265 Rok Sky +1, plus 29 others

COM5
ArqA
 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
11 Sky Mix, 17 Really, 19 U&Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 U&Drama +1, 65 That's TV 2, 70 Quest +1, 74 &UYesterday +1, 76 That's TV 2 MCR, 233 Sky News, plus 13 others

COM6
ArqB
 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
12 Quest, 25 U&W, 27 U&Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 63 GREAT! romance mix, 73 HobbyMaker, 75 That's 90s, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 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
Wednesday, 20 February 2019
MikeP
sentiment_very_satisfiedPlatinum

11:06 AM

Clevedon Resident etc:

There are no known faults at the Mendip transmitter. There are two possibilities. One is that there could be a poor connection in your aerial system, so please check all the cables and connection. Unplug all coaxial plugs/sockets and refit to clear any corrosion/oxidation on the contacts.
Another possibility is that you have too much signal;. Please check the signal strengths on all multiplexes (strength and not quality). It shoudl ideally be between 60% and 85%. If it is more then you have too much signal and it needs to be reduced. If it is less then you need a better aerial (preferrably a widband type or a log-periodic) to receive more signal.



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MikeP's 3,056 posts PT flag
MikeP
sentiment_very_satisfiedPlatinum

11:08 AM

B Daniels Mr:

Please don't publish other people's contact details on a public forum. It is highly dangerous and unwarranted. Especially if it is done without the express permission of the individual concerned.



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MikeP's 3,056 posts PT flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

4:09 PM

Clevedon Resident: & B Daniels Mr: & Lordgeous

There have been a few "bursts" of No Signal over some recent days. As Mendip is not reporting any faults and there is no Planned Engineering this week, I suspect it's the current weather conditions with the high pressure weather system. Patience will be what's required and don't go retuning as you may lose more and tune to incorrect signals or none at all.

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Chris.SE's 4,359 posts GB flag
Thursday, 21 February 2019
A
AntD
3:51 PM

I was having problems on the Mendip Transmitter with no start and finish signal when using a series link for Newsnight on BBC2 HD, which caused the end of the programme to be missed.
It is now working correctly.

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AntD's 4 posts US flag
Friday, 22 February 2019
G
Geoff
7:22 PM

Weak tv signal problems over the last weak. Tonight, Friday, lost all tv between 6.00 pm and 7 pm. My equipment is set to receive TV direct from the Mendip transmitter which has work trouble free for years. I live in Nailsworth Gloucestershire. I have checked all my equipment and feel fairly confident all is ok. When I check the signal through my Youview Box on BBC I find that quality ican be 100% but signal strength is now always low at best around 27%. I presume tonight strength has dropped well below 27%. No reports of any problems with the Mendip Transmitter so does anyone have any ideas what may be the cause of these recent signal problems.

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Geoff's 2 posts GB flag
Saturday, 23 February 2019
C
Chris.SE
sentiment_very_satisfiedPlatinum

12:08 AM

Geoff:

Some parts of Nailsworth could find reception difficult. Put your postcode details in Digital UK - Coverage checker to give predicted coverage for your location.
As I posted recently current high pressure weather has affected reception periodically.
The very large high pressure weather system is set to continue for a few more days yet and so may well cause reception difficulties at various times.

It would be advised to check all your coax connections (remove and re-insert the internal ones), if you've moved anything about in recent times, flyleads can sometimes become faulty. If your aerial installation is a few years old, water may have got into the aerial connector or the aerial may have moved a bit in the high winds in recent times or your downlead may have become damaged or degraded. Visual inspection is a good idea.

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Chris.SE's 4,359 posts GB flag
G
Geoff
4:11 PM

Thanks Chris

I have fiddled with all aerial connections as suggested and low and behold my signal strength for BBC and others had now upped to 56%. I can't believe it could have been simply a poor coax cable connection but it seems likely for since fiddling with the connections over one hour ago single strength has maintained. I think it was the connection to my Youview box that was causing the problem or there may be a problem inside all may be revealed if the problem returns.

Many thanks I will keep my fingers crossed all is now well.
Geoff

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Geoff's 2 posts GB flag
Sunday, 24 February 2019
MikeP
sentiment_very_satisfiedPlatinum

10:26 AM

Geoff:

It is well known that poor connections will affect the signals from the aerial to the TV set. Any poor connection will cause problems, which is why we contributors (who have seen it so many times) suggest checking aerial cables and connections. Coaxial plugs and sockects can get corrosion/oxidation on the contact surfaces and that causes signal [roblems as well - hence the suggestion toi unplug and refit hence removing that corrosion.



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MikeP's 3,056 posts PT flag
Friday, 8 March 2019
T
Terry Burton
9:38 AM
Frome

We have been experiencing loss of signal (sometimes for half an hour but more usually just a few seconds) for the past two weeks. We a complex of 30 properties served by two main aerial dishes. I have been advised that our equipment is okay. Wondered if you had any suggestions

Terry Burton (Scheme Manager)
Hanover Gardens
Frome
Somerset BA11 4HL

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Terry Burton's 1 post GB flag
Terry's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
MikeP
sentiment_very_satisfiedPlatinum

9:46 PM

Terry Burton:

There is no known problem with the transmitter so there has to be a connection problem at your location. Please note that Freeview dooes not use dishes but terrestrial aerials similar to those used for BBC2 since the sixties, though nowadays they need to be a wideband design.

I suggest that you carefully check all the aerial connections throughout the system and if there are any coaxial plugs.sockets then unplug and refit those. That also applies to any screw type 'F' connectors.



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MikeP's 3,056 posts GB flag
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