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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

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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

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
C49 (698.0MHz)591mDTG-3100,000W
Channel icons
1 BBC One West, 2 BBC Two England, 9 BBC Four, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 601 BBC RB 1, plus 17 others

PSB2
D3+4
 H max
C54 (738.0MHz)591mDTG-3100,000W
Channel icons
3 ITV (West), 4 Channel 4 South ads, 5 Channel 5, 6 ITV 2, 13 Channel 4 +1 South ads, 14 More4, 15 Film4, 24 ITV4, 24 ITV4 +1, 28 E4, 33 ITV +1 (West),

PSB3
BBCB
 H max
C58 (770.0MHz)591mDTG-6100,000W
Channel icons
45 Film4 +1, 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, 204 CBBC HD,

COM4
SDN
 H max
C48 (690.0MHz)591mDTG-8100,000W
Channel icons
10 ITV3, 20 Drama, 21 5 USA, 26 ITV Be, 27 ITV 2 +1, 30 5STAR, 34 ITV3 +1, 37 Quest, 44 Channel 5 +1, 54 My5, 58 ITV Be +1, 59 ITV4 +1, 61 True Entertainment, 63 Blaze, 66 CBS Reality, 70 Horror Channel, 80 Blaze +1, 83 Quest +1, 203 CITV, 211 Ketchup TV, plus 17 others

COM5
ArqA
 H max
C56 (754.0MHz)591mDTG-8100,000W
Channel icons
11 pick, 12 Dave, 17 Really, 29 E4 +1, 32 Sony Movie Ch, 38 Quest Red, 41 Food Network, 46 Challenge, 48 Movies4Men, 68 truTV, 69 Tru TV +1, 72 YourTV, 233 Sky News, plus 9 others

COM6
ArqB
 H max
C52 (722.0MHz)591mDTG-8100,000W
Channel icons
18 4Music, 19 Yesterday, 25 Home, 31 Spike, 39 CBS Action, 42 Travel Channel, 47 4seven, 71 CBS Drama, 73 YourTV +1, 79 Dave ja vu, 84 Quest Red +1, plus 21 others

LBS
 H -10dB
C51 (714.0MHz)591mDTG-1210,000W
Channel icons
from 22nd September 2014: 7 Made in Bristol,

com7
 H -1.4dB
C33 (570.0MHz)591mDTG-672,400W
Channel icons
56 5USA +1, 57 VIVA, 64 CBS Action +1, 67 CBS Reality +1, 81 Talking Pictures TV, 82 Vintage TV, 87 Keep It Country, 106 BBC Four HD, 107 BBC News HD, 108 Al Jazeera Eng HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, 205 CBeebies HD,

com8
 H -1.6dB
C35 (586.0MHz)591mDTG-669,100W
Channel icons
55 5STAR+1, 86 More4 1, 95 Freesports, 96 Forces TV, 115 BT Showcase HD (not free), plus 3 others



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
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
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?

years1984-971997-981998-20102010-1327/3/13-2013-1731st Mar 2018-
aerial groupC/D EEEC/D EC/D EWK
600C32BBCA
C33com7D3+4
C34BBCB
C35com8SDN
C36ArqA
C37C5C5
C48SDNSDNSDNArqB
700C49 BBCABBCA
C51LBS
C52ArqBArqBArqB
C54C4C4C4D3+4D3+4D3+4
C55+2
C56+CArqAArqAArqA
C58BBC1BBC1BBC1BBCBBBCBBBCB
C59+1
800C61ITVITVITVBBCA
C62+A
C64BBC2BBC2BBC2
C65+B
C67D

orange background for multiplexes names more
green background for transmission frequencies
lilac background for power levels in watts
800MHz band: 4G mobile started in 2013
700MHz band: 4G from 30 June 2020more
600MHz band: new or moved digital TV services more
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 24th March and 7th April 2010.

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, 12 September 2017
S
StevensOnln1
10:22 AM

Iain Davies: I doubt the local mux has been moved to the main aerial as it would cause massive interference with the Cardiff local mux which is also broadcast on C51 from Wenvoe, which has large areas of overlap with the main muxes from Mendip.

link to this
StevensOnln1's 908 posts Gold Gold GB
MikeP
10:24 AM

Ian Davis:

There has not been any engineering work reported at Mendip so there has been no known change to the aerial usage.

100% signal strength is too much. What is it like on the other multiplexes? You ideally need between 60% and 85% for good reliable reception, any more and there is a high risk of break-up and the strength should be reduced by using an attenuator or turning down the gain of any amplifier fitted in the aerial cable.



link to this
MikeP's 1,608 posts Gold Gold GB
I
Iain Davies
8:06 PM

Something has happened, as from zero % age to 100%. This shows on the signal meters on my Panasonic blu-ray recorder and Humax HD hard drive box. I used to live to the north of Mendip but now living south as I said until last Friday the signal was nil!

link to this
Iain Davies's 6 posts GB
Wednesday, 20 September 2017
I
Iain Davies
1:23 PM

Strange one here, signal dropped a lot only get CH 51 on outdoor Mendip aerial now. Was able until the other day get it via the back of a Stockland Hill aerial, now no signal!!!

link to this
Iain Davies's 6 posts GB
Thursday, 21 September 2017
MikeP
4:14 PM

Ian Davies:

From what you report it very much sounds as if you have problems with your aerial or the cables connecting it to the TV set. Please carefully check all the connections and ensure thatbthere is no visible damage to the cables. then unplug all aerial onnections and plug them back in (that is to ensure there is no oxidation of the contacts, which often causes the problems you report. Then check the signal strengths of all the multiplexes broadcast from Mendip, they should be no less that 50% for the SD services and no less than 60% for the HD services. None of them should be more that 85%, if they are then that will also cause the problems you report.

Finally, please enter you full post code so thet we contributors can check what the signal transmission and reception conditions are at your exact location.




link to this
MikeP's 1,608 posts Gold Gold GB
Friday, 22 September 2017
I
Iain Davies
5:58 AM

MikeP nope nothing wrong with my aerial system, brand new just installed by me. I have installed 1000s of aerial systems with no problems, from the North of Scotland where there was hardley any signal to places you could get perfect reception on a two inch nail!

link to this
Iain Davies's 6 posts GB
MikeP
5:11 PM

Ian Davies:

We still need your full post code. Without it there is no way we can help. Are you sure that your aerial system is correctly installed and aimed? What are the signal strengths of all the multiplexes being broadcast from Mendip?



link to this
MikeP's 1,608 posts Gold Gold GB
Monday, 25 September 2017
I
Iain Davies
4:18 AM

MikeP, I don't need any help I just want to know why the local Bristol tv mux has changed!

link to this
Iain Davies's 6 posts GB
Tuesday, 26 September 2017
MikeP
5:07 PM

Ian Davies:

You asked for help. We can only offer advice if we know where you are in relation to the transmitter.



link to this
MikeP's 1,608 posts Gold Gold GB
Wednesday, 27 September 2017
C
Chris.SE
3:27 AM Badminton

Ian Davies: Perhaps if you were clearer you might get more constructive comment. On which aerial did you notice this "change" in signal? You've just mentioned an outdoor Mendip aerial the implication of which is you have an indoor one as well, and there's also this Stockland Hill aerial. Are all the aerials "grouped" or are they wideband? Are the aerials coupled at any point before being fed to the TV(s)?
In any event, there has been no change to the local Bristol Mux. I'm 40 miles N of Mendip and getting it on 74% signal 100% quality as I usually do.
I do get occasional variations in strength when propagation changes. I suggest that it was such an event that was enabling you to get the mux of the back of your Stockland Hill aerial, recent weather pattern changes would usually cause some change in propagation.

link to this
Chris.SE's 29 posts Bronze Bronze GB
Chris.SE's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
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