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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), 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
Thursday, 28 December 2023
C
Christopher Sercombe
12:20 PM

Neil

I have had pixilation also the last week or more, i am Trowbridge also, been having it for months now on and off, tried all suggestions, new aerial cable etc, strange as sometimes it works, but not worked properly for a week or so, 0 to 55 signal strength.

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Christopher Sercombe's 9 posts GB flag
C
Chris.SE
sentiment_very_satisfiedPlatinum

3:17 PM

Christopher Sercombe:

Are you sure it was a 700MHz filter that you had from Restore TV? Your postcode gave a Yes on the check and even if it's a 700MHz filter in the amp/splitter, if the mobile mast signal is strong enough it can still give a problem especially with a wideband aerial. If it was the 800MHZ LTE filter, you do need the 700MHZ one.

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Chris.SE
sentiment_very_satisfiedPlatinum

3:23 PM

Neil:

Did the "aerial man" have a spectrum analyser and check for interference?
Put your parents' postcode in here https://restoretv.uk/post…ure/
If it says yes, they need to get in touch with Restore TV for a Free Filter, call 0808-1313-800
IF they have a masthead amp outside on the pole, then tell Restore TV because they will need to send an engineer Free of Charge to fit a external Waterproof filter.
All filters need to be fitted before any amp.

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Christopher Sercombe
3:44 PM

Chris.SE

Thx for reply, think i am going to ring them tomorrow, and get a 700MHz filter sent to me, thx

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Chris.SE
sentiment_very_satisfiedPlatinum

4:19 PM

Christopher Sercombe:

Certainly worth trying. I supposedly had a postcard ages ago, but never had any issues, so I'm waiting to see what's going on at Mendip.

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Chris.SE's 4,391 posts GB flag
Tuesday, 9 January 2024
B
Bristol_Rich
9:15 AM

Hi All

By means of a recap - North East Bristol - I have a loft mounted aerial tuned to Mendip which has been received reception fine without any issues until Nov 23 when we sporadically started to loose various "non BBC" channels.

Periodically we would loose various channels throughout the Freeview range for anywhere between 12 and 24 hours for them to return. This has continued for a number of months only for just at the point of calling an aerial tech to come back and look only for the channels to return and work again.

Over xmas much like the previous posters, we lost a lot of the non BBC channels over the Xmas period often for days on end and this continued until the new year when all channels returned fine for about a week.

As of Sunday I now have ALL channels but absolutely nothing on PSB2 not so much as a signal just "Service Unavailable" (before there was a high power but low quality signal blocky image and sound).

I'm totally bemused by this as all the other channels operate as expected, and I'm also confused by the sporadic nature of the signal coming and going.

I have contacted Restore TV who have said that a phone mast was upgraded nearby six years ago but nothing else since...

Am I dealing with an interference issue or should I just rip out the aerial and downlinks and start again?! (not expecting anyone to know the answer but to share your thoughts!)




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Chris.SE
sentiment_very_satisfiedPlatinum

2:52 PM

Bristol_Rich:

Restore TV have given you a load of nonsense. There is NO WAY the mast (whichever one they were talking about) was upgraded for 700 MHZ mobile usage 6 years ago because the frequencies were still in use for TV and they hadn't been auctioned either.
As you haven't given a full postcode I can't check how many masts may be near you, it may not be the absolute nearest mast giving you a problem - IF you still have problems!

No, you shouldn't rip out the aerial etc and start again!!
Do you have an amp/splitter feeding more than one TV?

Try manually retuning PSB2 again UHF C34. Check in your LCN 800s to see if the TV channels got put up there for some reason.

Mendip has been on Planned Engineering on and off for many weeks and was still listed recently (I could have sworn it was on the list yesterday but isn't today!!). However, since before Christmas, it seems several multiplexes were not operating on either full power or were on the Reserve Antenna (PSB2 was not one of them). That all changed yesterday.

All the multiplexes appear to be back to normal.
If you are still having problems, check in your TV Tuning section for the Signal Strength % and Quality figures for each multiplex's UHF channel and post them, along with a full postcode (or put that in the Settings box - top RHS of the page).

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Chris.SE's 4,391 posts GB flag
S
Steve Donaldson
sentiment_satisfiedSilver

3:03 PM

Chris.SE: Bristol_Rich did not say that Restore TV told him something in the 700MHz range was added six years ago. Based on what he says, it sounds like Restore TV has access to records of changes made to masts, and that the last change at this one was six years ago, meaning that it hasn't been changed recently and can be ruled out as a potential cause.

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Chris.SE
sentiment_very_satisfiedPlatinum

3:10 PM

Steve Donaldson:

You have missed the point.

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Chris.SE
sentiment_very_satisfiedPlatinum

6:14 PM

Steve Donaldson:

I didn't have time earlier except to give that brief response.
Having some knowledge of the general area, I know there's several masts in the locale, and as I said in my response it may not be the nearest one giving any issues - should there still be any - we'll have to wait for a response from Bristol_Rich.
In addition, clearly contacting Restore TV is obviously related to problems with 700MHz interference and it doesn't sound from the response that they've considered anything other than the nearest mast!
So it could still be 700MHz interference should there still be a problem as the transmitter appears to be running normally.

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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.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

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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