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Full Freeview on the Mendip (Somerset, England) transmitter

Brian Butterworth first published this on 1st May 2004 at 08:20 - UK Free TV

51.237,-2.626 or 51°14'12"N 2°37'33"W

BA5 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 25/09/2023 Pixelation or flickering on some or all channels

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

_______

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.

Mux	H/V	Frequency	Height	Mode	Watts
PSB1 BBCA	H max	C32 (562.0MHz)	591m	DTG-	100,000W
	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)	591m	DTG-	100,000W
	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)	591m	DTG-	100,000W
	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, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others 66 TBN UK,
COM4 SDN	H max	C48 (690.0MHz)	591m	DTG-8	100,000W
	20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 Great! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others
COM5 ArqA	H max	C33 (570.0MHz)	591m	DTG-8	100,000W
	Smithsonian Channel, 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, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 others
COM6 ArqB	H max	C36 (594.0MHz)	591m	DTG-8	100,000W
	Quest Red +1, Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 others
LBS	H -10dB	C30 (546.0MHz)	591m	DTG-12	10,000W
	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?

BBC Points West 0.9m homes 3.4%
from Bristol BS8 2LR, 25km north (3°)
to BBC West region - 60 masts.

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?

Cheddar	Transposer	15 km E Weston-super-Mare	1674 homes
Luccombe	Active deflector	6 km w Minehead	38 homes

How will the Mendip (Somerset, England) transmission frequencies change over time?

	1984-97	1997-98	1998-2010	2010-13	2013-18	2013-17	27 Feb 2018
	C/D E	E	E	C/D E	C/D E T	W T	W T
C30							_local
C32							BBCA
C33						com7	com7
C34							D3+4
C35						com8	com8
C36							ArqB
C37		C5_waves	C5_waves
C48				SDN	SDN	SDN	SDN
C49_{tv_off}					BBCA	BBCA
C51_{tv_off}						LBS	LBS
C52_{tv_off}				ArqB	ArqB	ArqB
C54_{tv_off}	C4_waves	C4_waves	C4_waves	D3+4	D3+4	D3+4
C55_{tv_off}							com7_{tv_off}
C56_{tv_off}				ArqA	ArqA	ArqA	COM8_{tv_off}
C58_{tv_off}	BBC1_waves	BBC1_waves	BBC1_waves	BBCB	BBCB	BBCB
C61	ITV_waves	ITV_waves	ITV_waves	BBCA
C64	BBC2_waves	BBC2_waves	BBC2_waves

_{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

Local transmitter maps

Mendip Freeview Mendip DAB Mendip AM/FM Mendip TV region BBC West West

Which companies have run the Channel 3 services in the Mendip transmitter area

Jan 1958-Jul 1968	Television Wales and the West
Jul 1968-Feb 2004	Harlech Television
Feb 2004-Dec 2014	ITV plc

Feb 1983-Dec 1992	TV-am•
Jan 1993-Sep 2010	GMTV•
Sep 2010-Dec 2014	ITV 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.

Is the transmitter output the same in all directions?

Comments

Monday, 11 May 2015

Dave Lindsay

_{sentiment_very_satisfied}Platinum

7:50 PM

Ian Jones: If you think your difficulties and those of your neighbour could possibly be from 4G operating in the band then you need to contact at800. This is the organisation set-up by the mobile operators and tasked with alleviation of issues:

Contact us | Advice or general enquiries | at800

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Dave Lindsay's 5,724 posts GB flag

Dave Lindsay

_{sentiment_very_satisfied}Platinum

7:52 PM

Ian Jones: If at800 do send you a filter, because it is suspected that 4G could be the culprit, then it must be fitted before the . Thus, if your amplifier is on the then a filter will need to be fitted up there, but not the usual plug type they usually send. You will need to raise this issue with them should it apply.

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Dave Lindsay's 5,724 posts GB flag

Sunday, 17 May 2015

Adam Temperton
8:11 AM
Bristol

O2 | Service Status will tell you if o2 are working on masts in your area. and the coverage map here if you enable masts will also show issues O2 | O2 Network Coverage Checker Also input your postcode on this site and see what it says for 4g https://ukfree.tv/pred…tion

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Adam Temperton's 7 posts US flag

Adam's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

Sunday, 28 June 2015

AlanB
9:26 AM

Com7 seems to list channel 110 twice; +1 HD & 4seven HD.

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AlanB's 1 post GB flag

Saturday, 11 July 2015

Bizman
2:28 PM

Ch4 +1 HD should be LCN109 replacing the Community .

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Bizman's 1 post GB flag

Thursday, 23 July 2015

Anthony
8:29 PM
Weston-super-mare

BS22 8QF
on .

I seem to have a problem with Channel 33: All the HD break up and are unwatchable.

I don't know what to do first to work out what the problem is.

Anyone know of a aerial installer who knows what they are doing and won't rip you off?

Thanks

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Anthony's 8 posts GB flag

Anthony's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

Saturday, 25 July 2015

Anthony
1:34 PM
Weston-super-mare

It seems to be intermittent.

BBC News channel seems to break up quite often, but I recorded 'Film review' and it recorded without a single problem, but that was for only 15 minutes though?

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Anthony's 8 posts GB flag

Anthony's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

Dave Lindsay

_{sentiment_very_satisfied}Platinum

2:23 PM

Anthony: Should you have two aerials one on and one on and these combine into one downlead, then this may be the cause of your issue receiving PSB1 on , and indeed any below from Mendip.

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Dave Lindsay's 5,724 posts GB flag

Anthony
8:12 PM
Weston-super-mare

Dave Lindsay:

Thanks for the reply.
Can you recommend a professional installer in the Weston Super Mare area (I'm not sure if you are from the Weston super mare area?)?

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Anthony's 8 posts GB flag

Anthony's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

Dave Lindsay

_{sentiment_very_satisfied}Platinum

9:13 PM

Anthony: Unfortunately not. I'm not an installer myself and I'm a long way away in Yorkshire.

If you have two aerials, wired as described in my previous posting, then you will probably be able to turn the -facing aerial to , this obviously forfeiting of Wenvoe. The other alternative is to replace the Mendip aerial with a log periodic such as the Log 36 mentioned here (this, I believe, being a 36 element log made by Vision Products):

Mendip Transmitter

V10-36L 36 Element Stub Tuner Super Log Periodic Aerial ? Vision Products - Powerful Products. Easy Installation. Excellent Value

A terrain plot shows you would have a clear path were it not for high ground at about 3.5 to 4 miles out and 6 to 7.5 miles out:

Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location

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Dave Lindsay's 5,724 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.

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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