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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
Tuesday, 13 August 2013
L
Lionel Lewis
7:16 PM
Cardiff

WE have two roof aerials, one pointed towards Wenvoe, Cardiff (reception strength 10)the other to The Mendips (reception strength 8). Until about a week ago we have been able to view Freeview programmes from either transmitter but cannot now view, for example, BBC 1 West on Mendips (ITV 1 West is ok). If I have read the earlier advice on this site correctly BBC1 West is transmitted on BBCA Channel 49. I have reset/set up all channels two or three times on both my TV and Humax PVR and noticed that while tuning is in progress Channel 45 is followed by C54 (ie no channel 49). I apologise in advance if I have overlooked anything obvious in the guidance/instructions above but would appreciate any advice about what to do next. Many thanks

link to this comment
Lionel Lewis's 4 posts GB
Wednesday, 14 August 2013
Dave Lindsay
sentiment_very_satisfiedPlatinum

12:43 PM

Lionel Lewis: If the feeds for these aerials combine using a diplexer then maybe it is that which means that your Wenvoe aerial is being used to pick up C49 from Mendip.

On 27th March Mendip's PSB1 (BBC One etc) multiplex moved to C49. Whilst COM4 (ITV3 etc) is now on C48 (it moved at the same time) you should be able to receive this from Wenvoe.

A diplexer "splits" at one particular channel. For Mendip and Wenvoe a split at C51 would have allowed all channels to be view - up until 27th March. This was because all of Wenvoe's channels were below C51 (and still are) and all of Mendip's were above C51.

Online TV Splitters, Amps & Diplexers sales

link to this comment
Dave Lindsay's 5,724 posts GB
L
Lionel Lewis
3:58 PM

Hi Dave.
Many thanks for the quick reply and detailed advice. Since the problem only surfaced about a week ago (according to my wife) but I can't be sure does this contradict your reference to the changes that occurred on 27 March this year?
Thanks again
Lionel

link to this comment
Lionel Lewis's 4 posts GB
Thursday, 15 August 2013
L
Lionel lewis
1:51 PM

Further to my last post yesterday I have now done a manual search on Channel 49 on my Humax PVR9300T and have succeeded in locating the 'missing' Mendip channels. However, my six-year old Panasonic TX-26LMD70A has been unable to find a signal on channel 49.
I am not too concerned about this as we can use the PVR. I should have delved more thoroughly before asking for advice on this forum. I am grateful to Dave Lindsay whose advice helped to put me on the right track.

link to this comment
Lionel lewis's 4 posts GB
M
Michael
sentiment_satisfiedGold

1:55 PM

Lionel lewis: Where does your aerial go into first - the box or the TV? If the box, then try connecting it to the TV instead and then manual tuning 49, to see if that makes any difference.

link to this comment
Michael's 358 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

2:27 PM

Lionel lewis: It is unfortunate that setups such as yours are falling fowl to the clearance of C61 to C68 for 4G services.

"If" Mendip's PSB1 (BBC One etc) had moved to a channel greater than 51 but one of the others which is available from Wenvoe was displaced to C49 then you would still be able to view BBC One West.

link to this comment
Dave Lindsay's 5,724 posts GB
L
Lionel Lewis
7:05 PM

Thank you Michael and Dave Lindsay for your comments and advice. Regards, Lionel Lewis

link to this comment
Lionel Lewis's 4 posts GB
Saturday, 17 August 2013
D
david
sentiment_satisfiedBronze

3:14 PM

is it possible to get french digital tv on the south coast or are channels blocked by uk channels

link to this comment
david's 66 posts GB
MikeP
sentiment_very_satisfiedPlatinum

6:04 PM

David:
It may be possible along the south and east Kent coast and just possibly along the East Sussex coast but it is unlikely to be receivable further west due to distance from the transmitters near the north coast of France.
I have no details of the locations nor transmission channels of their transmitters nor of the encoding or modulation methods used though they are likely to be similar to those used in the UK and I have to assume that they use same format standards as we do now. They used to use 819 line 50 field transmissions for many services in addition to 625 line 50 field, but that was all analogue and not digital.
How about doing a search for information on the internet and letting us all know?

link to this comment
MikeP's 3,056 posts GB
B
Bizman
7:30 PM

@David, there is a discussion at French Freeview here in Kent.. - Freeview - Digital Spy Forums that may interest you.

link to this comment
Bizman's 20 posts GB
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