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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.

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 19/09/2022 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-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 MAX, 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 8 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, 88 Classic Hits, 235 Aljazeera English, plus 19 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?

1984-971997-981998-20102010-132013-182013-1727 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
Tuesday, 7 February 2012
F
F Canfield
8:43 PM

F Canfield: Hello tried the signal test. The signal strengh bar did show a faint glimmer (like 1%) of hope in one position but would still not give any reception. So more or less dead as previously explained. So tried tv upstairs with the old indoor aerial and what do you know The tv came to life. So proved my own theory something is blocking my previously good signal downstairs - if I only knew what is was!

link to this comment
F Canfield's 5 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

9:59 PM

F Canfield: I still cant help but feel that if you have verified that both these set top type aerials are working OK by having tried them on the upstairs TV, but both of them fail to give a picture when used on the set downstairs when located in approximately the same position as before when hitherto they did provide a workable signal, then there is likely to be some other factor involved which although maybe appearing as totally insignificant, isn't!

If the worst comes to the worst and you cant find a way around the problem, then should the breakfast bar be located on the rear of the house cant you install a aerial such as shown in the link? this mounted on a small wall bracket or even by using a gutter mount. (I refer to the DM18 as others are also shown)

By the way Mendip (@ 16mls / 128degrees) and Wenvoe ( @17mls / 291degrees) show exactly the same predictions as far as reception is concerned, that of being excellent, but not necessarily both being picked up at the same strength when using an indoor aerial, so you have to ensure that when you carry out an auto-tune your TV actually picks all the channels up from the same station.

Online TV FM DAB Aerial sales

This is the Mux channels used by both

Mendip: 61 - 54 - 58HD - 48 - 67 -52

Wenvoe: 41 - 44 - 47HD - 42 - 45 - 49



link to this comment
jb38's 7,179 posts GB
Thursday, 9 February 2012
F
F Canfield
9:15 PM

F Canfield: Sorry was not clear re upstairs test. The TV was the one from the kitchen. I took the kitchen tv and the old indoor aerial upstairs (I did not just try the indoor aerial in another set that was upstairs already) As you say looks like an external aerial is now the only option.
Thanks anyway. FC

link to this comment
F Canfield's 5 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

9:49 PM

F Canfield: Thanks for clarifying that point, and as regards to the aerial as you are obviously in quite a good spot for reception (excluding your kitchen!) then the aerial mounted in the loft should be perfectly OK, that is provided its not facing into a water tank or that you don't have any form of roof insulation installed containing any form of metallic element mixed with the fibres.

These are just the usual qualifications associated with loft aerials, and although the log aerial seen in the link I provided is an excellent aerial of the smaller variety, you have said in a much earlier posting that the TV worked OK on the one already in the loft so you only really require to run an extra cable from it, and its output preferably fed into a two way powered splitter to provide an aerial point in each room, as this would guarantee that both points get the same level of signal.

link to this comment
jb38's 7,179 posts GB
Wednesday, 15 February 2012
Transmitter engineering
sentiment_very_satisfiedOwner

7:36 PM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 today to 14:54 today HD Digital TV Weak Signal from 14:23 today to 14:37 today [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

7:36 PM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 today to 14:54 today HD Digital TV Weak Signal from 14:23 today to 14:37 today [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Thursday, 16 February 2012
Transmitter engineering
sentiment_very_satisfiedOwner

10:30 AM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 yesterday to 14:54 yesterday HD Digital TV Weak Signal from 14:23 yesterday to 14:37 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

10:30 AM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 yesterday to 14:54 yesterday HD Digital TV Weak Signal from 14:23 yesterday to 14:37 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Friday, 17 February 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:33 AM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 on 15 Feb to 14:54 on 15 Feb HD Digital TV Weak Signal from 14:23 on 15 Feb to 14:37 on 15 Feb [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

4:33 AM

MENDIP transmitter - Freeview BBC Digital TV Weak Signal from 14:41 on 15 Feb to 14:54 on 15 Feb HD Digital TV Weak Signal from 14:23 on 15 Feb to 14:37 on 15 Feb [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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