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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.

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, 250 BBC Red Button, plus 16 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, 30 E4 +1, 35 ITV1 +1 (West),

PSB3
BBCB
 H max
C35 (586.0MHz)591mDTG-100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 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, 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
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 14 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
12 Quest, 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 Al Jazeera Eng, plus 19 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
Friday, 10 October 2014
Transmitter engineering
sentiment_very_satisfiedOwner

4:31 AM

MENDIP transmitter - Freeview: HD Digital TV Off Air from 18:33 on 08 Oct to 18:33 on 08 Oct. [BBC]

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Transmitter engineering's 138,029 posts xx
Tuesday, 21 October 2014
J
Jeff
10:58 PM

Anyone know of any problems affecting COM7 (BBC4 HD, etc)? Over the past few days it's been very intermittent, sometimes with no signal at all (even through a booster). As it's now listed above at 72 400w (up from 10000) there should be no reception problems. No problems are reported at Mendip. Any information?

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Jeff's 4 posts GB
Wednesday, 22 October 2014
J
Jeff
10:22 AM

Update to above: booster only used to check reception: not normally used. All other MPXs OK., just channel 33.

link to this comment
Jeff's 4 posts GB
Wednesday, 12 November 2014
Transmitter engineering
sentiment_very_satisfiedOwner

4:31 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 22:12 yesterday to 02:38 today, BBC National DAB Radio Off Air from 22:12 yesterday to 01:19 today. [BBC]

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Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

10:31 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 01:19 today to 02:38 today, BBC National DAB Radio Off Air from 22:12 yesterday to 01:19 today. [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Thursday, 13 November 2014
Transmitter engineering
sentiment_very_satisfiedOwner

4:33 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 01:19 yesterday to 02:38 yesterday, BBC National DAB Radio Off Air from 22:12 on 11 Nov to 01:19 yesterday. [BBC]

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Transmitter engineering's 138,029 posts xx
Friday, 14 November 2014
Transmitter engineering
sentiment_very_satisfiedOwner

4:32 AM

MENDIP transmitter - DAB: BBC National DAB Radio Weak Signal from 01:19 on 12 Nov to 02:38 on 12 Nov, BBC National DAB Radio Off Air from 22:12 on 11 Nov to 01:19 on 12 Nov. [BBC]

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Transmitter engineering's 138,029 posts xx
Saturday, 15 November 2014
P
Paul
8:17 PM

Has anyone got any tips on what type of aerial would be best to use, am located in Worle, postcode bs226lj, and currently have issues with fluctuating signal quality on numerous channels, strength is stable and high, around 90-95 percent that's with using a booster which I don't think I should need one with an outdoor aerial but without the booster the fluctuating signal quality is even more of an issue so the fluctuating quality isn't directly related to using a booster. I do know about the pros and cons about using boosters so be need to really go into that, it's the types of aerial I'm interested in getting advice about.

We do have a main road outside the house, the fluctuating quality is a lot to do with traffic as the issue goes away late at night, early hours of the morning when there's obviously hardly any traffic going by. My location isn't on one of the high spots around Worle so the aerial doesn't have a direct line of sight but I don't think that's the issue with the quality fluctuating due to the situation improving late at night etc as the tall trees (not close by but are in line with the direction the aerial is pointing) are there all the time lol.

I'm sure I've seen an aerial advertised that is supposed to help with interference issues but can't recall if I'm correct on that one, the one we have on the roof now was installed a few years ago, the installer said it was good enough but it looks like the one of the old aerials that have been around 20 plus years, if you know what I mean.. The cable being used with the outdoor aerial is pf100.

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Paul's 7 posts GB
Sunday, 16 November 2014
J
jb38
sentiment_very_satisfiedPlatinum

12:12 PM

Paul: Locations where the quality of the signal received is being adversely affected by traffic passing along a nearby roadway, can in "some" cases be down to the aerial having moved slightly whilst it was being tightened up, insomuch is sitting a few degrees to the right or left of the exact direction that the signal is coming, this type of thing making it more sensitive to such as reflections from passing traffic etc, multi-element aerials of the high gain variety (should this apply) exacerbating the problem because of their narrower signal acceptance angle.

Therefore, as the aforementioned is only one possible reason for your problem, it would be rather prudent to make one or two local enquiries to ascertain if others are also suffering from similar problems with their reception, because if they are, then your aerial alignment is likely to be OK.

That said, you are indicated as being at 15 miles away from the Mendip transmitter @ 124 degrees, the line-of-sight problem you refer to seen on the terrain indicator as being at 7 miles prior to your location, a factor related to this being that reception of signals of a non-direct line nature is only possible through what's known as diffraction (signal bending) resulting in them being more vulnerable to anything that might interfere with them, e.g: such as vegetation in the form of trees etc on the land that is causing the LOS obstruction, this unfortunately being something that no one can do anything about.

By the way, on the subject of aerials, its quite unnecessary to use anything other than a Log periodic (Log 36) aerial for DTT reception, their only problem being one of image, insomuch that people incorrectly equate large pieces of metalwork on their roofs as in some way being superior to that of the much smaller Log types, the latter in many cases giving a superior level of glitch free reception by having a wider pick up angle plus a near to flat response across the channels.


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jb38's 7,179 posts GB
Tuesday, 18 November 2014
S
Steve
11:35 AM
Taunton

Hi All,
I cannot seem to find any mention of current Freeview interference on ITV and C4 variants for the Mendip transmission area. I live in the Taunton area and although we appear to be on the edge of the coverage area we normally have good reception. The picture/sound have been blocking for a couple of weeks now, making viewing and recording impossible. I don't think it is equipment because both the TV and digibox recorder have the same problem. Has anyone else had this problem and are there any solutions?
Thanks.

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Steve's 2 posts GB
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