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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.

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 06/12/2021 Screen may go black on some or all channels Digital tick

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.

 H max
C32 (562.0MHz)591mDTG-3100,000W
Channel icons
1 BBC One (SD) West, 2 BBC Two England, 9 BBC Four, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 16 others

 H max
C34 (578.0MHz)591mDTG-3100,000W
Channel icons
3 ITV (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, 25 ITV4, 29 E4 +1, 34 ITV +1 (West),

 H max
C35 (586.0MHz)591mDTG-6100,000W
Channel icons
72 Shopping Quarter , 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, plus 1 others

 H max
C48 (690.0MHz)591mDTG-8100,000W
Channel icons
 CCXTV, 12 Quest, 20 Drama, 21 5USA, 28 ITV2 +1, 31 5STAR, 32 Paramount Network, 41 GREAT! movies action, 45 Channel 5 +1, 55 5SELECT, 57 ITVBe +1, 58 ITV3 +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 68 Horror Channel, 73 Drama +1, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, 212 YAAAS!, plus 15 others

 H max
C33 (570.0MHz)591mDTG-8100,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 30 4Music, 35 pick, 39 Quest Red, 42 Food Network, 46 Film4 +1, 47 Challenge, 48 4seven, 56 Smithsonian Channel, 69 Quest +1, 74 Yesterday +1, 82 Together TV, 233 Sky News, plus 9 others

 H max
C36 (594.0MHz)591mDTG-8100,000W
Channel icons
23 Dave ja vu, 26 Yesterday, 33 GREAT! movies, 38 DMAX, 40 CBS Justice, 43 HGTV, 67 CBS Drama, 81 Talking Pictures TV, 84 PBS America, 234 RT, 235 Aljazeera English, plus 18 others

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

 H -1.4dB
C55 (746.0MHz)591mDTG-672,400W
Channel icons
 Together TV +1,  Merit, 64 FreeSports, 70 Quest Red +1, 76 Now 70s, 86 More4 +1, 87 PBS America +1, 89 Court TV, 96 Forces TV, 106 BBC Four HD, 107 BBC News HD, 113 RT HD, 114 Quest HD, 205 CBeebies HD, plus 2 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 (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
C49tv_off BBCABBCA

tv_off Being removed from Freeview (for 5G use) after November 2020 - 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.

Tuesday, 13 September 2011

10:24 PM

Rune: From above:

Mendip SDN and Arqiva A will temporarily operate on channels 62+ and 56+ respectively (both at 10kW ERP) until September 2011. Final DSO channels will then be adopted, though ERP levels will remain limited until early 2012. Arqiva B will operate on channel 59+ (10kW ERP) until January 2011, when it will move to channel 67 at 26kW ERP until September 2011. Arqiva B's final DSO channel will then be adopted, though ERP will remain limited until early 2012.
ArqA increases from 10kW to 12.5kW on 28 September (changes to 64QAM mode and loses its current +167kHz offset.

link to this comment
Briantist's 38,844 posts GB

10:26 PM

From Switchover events September- December 2011 | - independent free digital TV advice - 28th September Mendip - MuxA on C62 becomes SDN on C48 (final due to Oxford end), Mux C on C56 becomes ArqA on C67 (moves again 28 Match 2012), ArqB moves from C67 to C52 (final due to Oxford end).

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Briantist's 38,844 posts GB
Wednesday, 14 September 2011

10:08 AM

Some Mendip data appears to be out-of-date and hence confusing. Could somebody double-check and tabulate what is definitely to happen 28 Sep and therafter, eg dates x-axis, muxes y-axis, channels in boxes. Many thanks!

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michael's 857 posts GB

2:33 PM

michael: I will look into it.

link to this comment
Briantist's 38,844 posts GB
Saturday, 17 September 2011
James C
5:10 PM

Thanks for all the info - I have some PC
cards to retune and it is so much quicker if you have the numbers and do it manually. This
is my take on how it's going to be.

CH48 =690000 ITV3, Five*,Five USA etc
CH52 =722000 Film4,Yesterday,ITV4 etc
CH54 =738000 ITV1,CH4,Five etc
CH58 =770000 BBC HD,BBC1 HD,ITV1 HD,CH4 HD
Ch61 =794000 BBC1-4, News 24 etc
CH67 =842000 Dave,Pick,Really etc


CH56 =754000 Gone for good
CH57= 762000 Gone for good
CH62 =802000 Gone for good

Local CH51 =714000 (Local, when and if)

Retune Again March 28th 2012, CHs stay the same, but modes are changing.

Have I got this right now?

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James C's 11 posts GB
Sunday, 18 September 2011
9:12 AM

67 changes back to 56 2012

link to this comment
Andy's 3 posts GB
James C
10:09 AM

thanks for checking Andy, and spotting my mistakes. This is the amended version.

CH48 =690000 ITV3, Five*,Five USA etc
CH52 =722000 Film4,Yesterday,ITV4 etc
CH54 =738000 ITV1,CH4,Five etc
CH58 =770000 BBC HD,BBC1 HD,ITV1 HD,CH4 HD
Ch61 =794000 BBC1-4, News 24 etc
CH67 =842000 Dave,Pick,Really etc


Local CH51 =714000 (Local, when and if)

Retune Again March 28th 2012, CH 67 moves to CH56 (754000)plus mode changes.

- I want to make sure this is exactly right so I can put numbers into an XML which scans my PC cards up in jiffy.

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James C's 11 posts GB

10:48 AM

Still not sure... Ofcom and DUK seem to have conflicting projections, maybe because not synchronising updates? Does 67 move to 52 or 56? Do Arqiva A and B swap? Where will 61 move to when 800MHz clearance proceeds? It was earlier suggested that general changes would be 62>50, 61>49, 50>40, 49>39. Outdated now? Viewers with manual retune or "intelligent" automatic retune will probably manage. I wonder if there will be an increase in postings on this page...

link to this comment
michael's 857 posts GB
Monday, 19 September 2011
Peter Dolman
4:43 PM

The forthcoming Mendip retune (28 Sept 2011) places one Mux on channel 48. In our location (North Wiltshire) it's quite common for customers to experience reception and tuning problems due to the arrival of unwanted signals from Wenvoe. I see there's a Wenvoe Mux on channel 49 - for us that's the first time an 'outside' channel has become interleaved with our Mendip ones. So in problem areas, manual tuning will be a must and rf filtering will not be of use to avoid unwanted problems when the customer retunes themselves. Have I got this right?

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Peter Dolman's 13 posts GB
Tuesday, 20 September 2011
Gareth Smart

8:53 PM

As of today, the 20th September has Challenge changed multiplex to replace pick tv+1? If it has at least I should be able to watch it break-up free!!!

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Gareth Smart's 43 posts GB
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