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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.

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, 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),

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 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

COM5
ArqA
 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 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, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 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
Monday, 20 November 2023
S
Sim B
8:14 PM

Looking for some advice - recently very high error rate on the D3+4 PSB2 and all channels now pixelated. PSB1 working totally fine on all channels. Signal strength on PSB1 and PSB 2 similar could this be local interference from something not there previously - in in GL19 4 so a reasonable distance away from Mendip

Any thoughts or advice gratefully received

link to this comment
Sim B's 1 post GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

10:10 PM

Sim B:

It could be anything to be quite frank. As mentioned in the previous post, and umpteen times around this site, reception predictors don't work on partial postcodes. GL19 4 is a very large area with extremely variable terrain. Reception may vary from zero to quite good despite the distance.
Also we can't check if you may be susceptible to interference from a new/upgraded phone mast using 700MHz (5G/4G+). It could be you should have had a postcard from RestoreTV but haven't (we've encountered a number of such cases).

Check you are correctly tuned to Mendip's UHF channels as listed in the section at the very top of this page.
Please give the signal strength and Error figures for each UHF multiplex as well as your full postcode.

Do check some obvious things such as is your aerial looking intact and still pointing as it was, is the coax secure and not flapping in the wind? Check all accessible coax connections and ensure there's no corrosion or water. Sometimes these sort of problems can affect one multiplex without an observable effect on the others.

Do you have any amp and/or splitter maybe to feed more than one set?

link to this comment
Chris.SE's 4,075 posts GB flag
Sunday, 26 November 2023
B
Bristol_Rich
9:31 AM

Grateful for some pointers...

I've a loft mounted aerial, tuned into Mendip - no historical issues.

Watching tv Friday night no problems, yet Saturday morning I can only receive BBC channels, all others are 100% strength 0% quality - Chanel idents and EPG available - broken sound no image.

Have checked aerial for damage and no obvious signs of damage, post code checker reports no problems.

Thoughts?

link to this comment
Bristol_Rich's 7 posts GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

3:22 PM

Bristol_Rich:

I wouldn't rely on the postcode checker for problems I'm afraid, it's not always accurate.
Without your full postcode to look at your predicted reception, it's not possible to give any specific suggestions.

You mention 100% signal strength, do you have an amp or amp/splitter. If so, and it has variable gain, turn it down a touch so that the strength drops to just below 100%. Too much signal can be as bad a s a very weak signal with similar results.

There was a little bit of Tropospheric Ducting around yesterday morning, but that should have cleared by now.

Have a read of my previous half dozen posts on the Mendip transmitter page, any of the main content of which could be applicable, but pay particular attention to NOT retuning when you have no signal/badly pixellated pictures/broken sound, if you were correctly tuned initially.
Also to the possibility of mobile mast interference.

link to this comment
Chris.SE's 4,075 posts GB flag
B
Bristol_Rich
5:01 PM

Chris.SE:

Hi Chris, thank you...Fortunately I had read one of your previous links about not retuning

link to this comment
Bristol_Rich's 7 posts GB flag
B
Bristol_Rich
5:02 PM

Hi Chris, thank you...Fortunately I had read one of your previous links about not retuning...

I've just ordered a variable attenuator to see if that helps dial the signal strength down a bit. However, after numerous hours of faffing, leaving it, a quick check about an hour ago reveals that all is back to normal - all channels have returned so assume a transmitter issue or consequence tropospheric ducting...

Either way, it's working - thanks for taking the time to reply.

link to this comment
Bristol_Rich's 7 posts GB flag
B
Bristol_Rich
5:03 PM

Hi Chris, thank you...Fortunately I had read one of your previous links about not retuning

link to this comment
Bristol_Rich's 7 posts GB flag
Monday, 27 November 2023
C
Chris.SE
sentiment_very_satisfiedPlatinum

12:04 AM

Bristol_Rich:

Glad it's returned to normal. Sensible idea getting a variable attenuator, you can then check/ensure you don't have any overload issues.

link to this comment
Chris.SE's 4,075 posts GB flag
Transmitter engineering
sentiment_very_satisfiedOwner

10:47 AM

Mendip transmitter - Mendip transmitter: Possible effect on TV reception week commencing 27/11/2023 Pixelation or flickering on some or all channels [DUK]

link to this comment
Transmitter engineering's 148,786 posts GB flag
Monday, 4 December 2023
Transmitter engineering
sentiment_very_satisfiedOwner

5:11 AM

Mendip transmitter - Mendip transmitter: Possible effect on TV reception week commencing 04/12/2023 Pixelation or flickering on some or all channels [DUK]

link to this comment
Transmitter engineering's 148,786 posts GB flag
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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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