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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 06/12/2021 Screen may go black 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-3100,000W
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-3100,000W
Channel icons
3 ITV (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 ITV +1 (West),

PSB3
BBCB
 H max
C35 (586.0MHz)591mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 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
12 Quest, 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, 211 Ketchup TV, 212 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
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 91 Classic Hits, 235 Aljazeera English, plus 18 others

LBS
 H -10dB
C51 (714.0MHz)591mDTG-1210,000W
Channel icons
from 22nd September 2014: 7 Made in Bristol,

com7
 H -1.4dB
C55 (746.0MHz)591mDTG-672,400W
Channel icons


DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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?

1984-971997-981998-20102010-1327 Mar 132013-1727 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, 11 April 2012
B
Ben Ward
sentiment_satisfiedBronze

11:34 AM
Melksham

Dave, how I do I tell what transmitter a channel is tuned to? Is absence of info about this a limitation of different F.V. boxes?

My standard def. BBC1 (and its alright today) is indeed tuned to C61, but I'm not sure from which transmitter.

Thanks,
Ben

link to this comment
Ben Ward's 28 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

12:27 PM

Ben Ward: C61 is that used by Mendip for BBC standard definition, so it is tuned to Mendip.

link to this comment
Dave Lindsay's 5,724 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

4:50 PM

Ben Ward: The problem is that the relay transmitters retransmit the exact same datastream that they receive, it can't be subdivided. In fact to save costs, there are actually only 27 or so sets of Service Information, with even some main transmitters sharing the same information.

Therefore, a few years ago, the region descriptions changed from being the main transmitter in the Service Information region to being a rough geographical area. All of Mendip's relays, including the line-fed full Freeview transmitters at Bristol Ilchester Crescent and Bristol Kings Weston Hill, are simply described as 'West'. It was felt this was less confusing than signalling 'Mendip' when it might not be.

You can find the users of a specific channel by clicking the channel number in any post that mentions one, or in the list of pre/post-switchover channel numbers on a transmitter page - that gives you a map. It shows the pre-switchover state unless you clicked a channel in the 'After {switchover date} section. Or, you can go to Find a Freeview transmitter by frequency | ukfree.tv - independent free digital TV advice and click channel numbers to search.

link to this comment
Mike Dimmick's 2,486 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

4:56 PM

Mike Dimmick: Is there a list available of the region names you refer to that transmitters identify themselves as?

link to this comment
Dave Lindsay's 5,724 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

10:11 PM

Dave Lindsay: I became aware of the SIP Regions through the preparation of the 600 MHz band auction (that will not now go ahead), as one of the requirements for Single Frequency Network operation is that the transmitters sharing a frequency are part of the same SIP region. (SIP = Service Insertion Point.) The most recent planning document for that is at http://stakeholders.ofcom….pdf , and the SIP regions are listed in Appendix 5 (p50).

Since this was published, the BBC have decided to move Whitehawk Hill from the South to the South East region, and so it can no longer be a part of the Rowridge SIP region, but ITV have decided to keep it as Meridian South rather than move it to South East, so Whitehawk Hill (plus its relays) is now a region of its own.

I don't know of anywhere that lists the descriptions that are actually broadcast, though.

link to this comment
Mike Dimmick's 2,486 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

10:19 PM

Mike Dimmick: Is the "600MHz Band Auction" that you say won't go ahead the auction of channels 31 to 37?

And if so, what will it be used for?

link to this comment
Dave Lindsay's 5,724 posts GB
C
Chris.SE
sentiment_satisfiedSilver

10:53 PM

Yes, and if you look at the Transmission Frequencies towards the top of the transmitter pages you will see the channels allocated to additional commercial services COM7/8/9.

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

11:01 PM

Ed Stone:
Street is close to the Mendip transmitter. Can you see the transmitter from your location?
Your postcode, put into the box on the top RHS of the page will help people to give more specific advice.

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

11:05 PM

The Wakefield:
No, there are no known problems at the transmitter. As advised to Ed Stone, your postcode put in the box will enable more specific advice. Did you have any problems before this last change and power up?

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Chris.SE's 251 posts GB
Thursday, 12 April 2012
T
The Wakefield
7:19 AM
Berkeley

Hello there, Chris.SE! ^_^ I didn't bother with the Postcode Reception Predictor because until just after this Power Up we've had more than adequate reception here, and checking it now we're still very much in the predicted signal area. Even when 52 & 56 were on their older channel numbers at lower power we received them perfectly. Before the Power Up everything was perfect, on the day of the Power Up everything was perfect, it was just a couple of days after the Power Up where everything fell apart. I thought it might be an engineering issue because there was a Transmitter Engineering post on the 26th of March that didn't give any specific dates, and Gareth Smart said something on the 1st about there being weak signal until Friday the 6th. (I'd be interested to know if you've still got weak signal now, Gareth ^_^) If it's not an engineering issue then I just don't understand what's going on, or why it's only affecting channels 61 & 56 the way it is. Any ideas, Chris.SE? ^_^; Is there anyone I can complain to about this?

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The Wakefield's 6 posts GB
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