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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
 BBC Three, 1 BBC One West, 2 BBC Two England, 9 BBC Four, 120 CBBC, 121 CBeebies, 130 BBC News, 131 BBC Parliament, 601 BBC Red Button 1, plus 13 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, 28 E4, 33 ITV +1 (West),

PSB3
BBCB
 H max
C58 (770.0MHz)591mDTG-6100,000W
Channel icons
 BBC Three HD, 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, 123 CBBC HD, 602 BBC Red Button 2, 603 BBC Red Button 3, plus 1 others

COM4
SDN
 H max
C48 (690.0MHz)591mDTG-8100,000W
Channel icons
10 ITV3, 20 Drama, 21 5USA, 26 ITV Be, 27 ITV 2 +1, 30 5STAR, 34 ITV3 +1, 37 Quest, 44 Channel 5 +1, 55 Channel 5 +24, 58 ITV Be +1, 61 True Entertainment, 62 ITV4 +1, 66 CBS Reality, 70 Horror Channel, 122 CITV, 242 Vintage TV, plus 23 others

COM5
ArqA
 H max
C56 (754.0MHz)591mDTG-8100,000W
Channel icons
11 pick, 12 Dave, 17 Really, 29 E4 +1, 32 Movie Mix, 41 Food Network, 46 Challenge, 48 Movies4Men, 68 truTV, 69 Tru TV +1, 72 YourTV, 126 Tiny Pop, 132 Sky News, plus 18 others

COM6
ArqB
 H max
C52 (722.0MHz)591mDTG-8100,000W
Channel icons
 Al Jazeera English,  BT Sport 1 (not free), 18 4Music, 19 Yesterday, 25 Home, 31 Spike, 38 Quest +1, 42 Travel Channel, 47 4seven, 59 BT Showcase (not free), 64 CBS Action, 73 YourTV +1, 84 Dave ja vu, plus 21 others

LBS
 H -10dB
C51 (714.0MHz)591mDTG-1210,000W
Channel icons
from 22nd September 2014: 7 Made in Bristol, plus 1 others

com7
 H -1.4dB
C33 (570.0MHz)591mDTG-672,400W
Channel icons
 Buz Muzik, 57 VIVA, 63 Community Channel, 67 CBS Reality +1, 71 CBS Drama, 81 Talking Pictures TV, 83 5USA +1, 106 BBC Four HD, 107 BBC News HD, 108 Al Jazeera Eng HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, 124 CBeebies HD, 134 Al Jazeera Arabic, plus 4 others

com8
 H -7.6dB
C35 (586.0MHz)591mDTG-617,500W
Channel icons
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
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?

years1984-971997-981998-20102010-1327/3/13-2013-182019-
aerial groupC/D EEEC/D EC/D EWK
C22SDN
C25ArqA
C28ArqB
600C33com7
C35com8
C37C5C5
C40BBCB
C43D3+4
C46BBCA
C48SDNSDNSDN
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: possible 4G in 2019 more
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(-14.6dB) 17.5kW
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
Wednesday, 30 March 2016
MikeP
8:05 AM

Steve Poile:

There is also the issue about terrain. Some of the hills around Wellington, Somerset may make reception from one or other of the main transmitters somewhat difficult. A Post Code will allow examination of the terrain and reception predictions for a particular area. These would show as the blue boxes below ypur submission, like those below this for my location.


link to this
MikeP's 835 posts Gold Gold GB
Monday, 11 April 2016
Tuesday, 19 April 2016
D
Dr J Harvey
12:39 PM

Hi, I live in the Chippenham area and we used to have good reception of all the multiplex channels including SDN & BBCA. Recently SDN has moved to C48 which is adjacent to the BBCA mux on C49 and we now have appalling/ unwatchable reception on all program channels on C48 & C49 as evidenced by signal measurements giving good signal strength but very poor and highly variable signal quality for BOTH C48 & C49 (other muxes still give good reception).
I understand that in RF planning one never collocates transmissions on adjacent frequency bands on a given transmitter as this reduces the usable range on these bands arising from increased cross interference.
I would prefer not to have to move to satellite reception or internet to receive Freeview programs.
Why has this been done and are there any plans to move either of these muxes to other frequency bands in the near future to avoid this problem ?

link to this
Dr J Harvey's 1 post GB
Friday, 22 April 2016
F
fade2gray
12:44 PM

Lost signal on com7 C33 (570.0MHz) in the BA1 6xx area of Bath.

I performed a reset (first-time-install) on the tv and all programmes in that block have now been removed from the EPG.

Any advice please?

link to this
fade2gray's 1 post GB
J
jb38
7:06 PM

fade2gray: Mendip is listed on this weeks engineering page with the status of "possible weak signal", the most likely reason for your problem.

If you had refrained from retuning your Freeview device the signal would have returned of its own accord, as the channel would still have been stored in the tuners memory system, retuning having deleted same, as things are, the only way of restoring it is by carrying out a "manual" tune on Mux C33 now and again in the hope that the signal level has risen high enough for the tuner to lock on to it.

By the way, the only reason a manual tune was suggested is to avoid upsetting the programmes already stored.


link to this
jb38's 6,965 posts Platinum Platinum GB
C
Charles Stuart
10:07 PM

@ Dr J Harvey, I would suggest checking that your aerial hasn't been moved out of alignment with the signal during stormy weather. Then check that the cable is OK. If both are fine, I would suggest that maybe you need a higher gain aerial or just possibly attenuation of the signal. The best thing to do is seek the services of an aerial installer. There is no reason why your system shouldn't work on channels 48 and 49. Unlike analogue, digital signals on adjacent channels do not interfere with each other.

link to this
Charles Stuart's 152 posts Silver Silver GB
Charles's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
Thursday, 28 April 2016
N
nicholas
9:28 PM

Hi,i would do a replacement of all the cable and the aerial if it old,try an indoor aerial and scan to see what
the local field strength is like.You could try inverting the aerial,inverted signal was a chronic vhf problem
in areas of swindon.Try aerial at ground level,local buildings can cause chronic moving fading problems
where the signal are bound around like a yo-yo

link to this
nicholas's 15 posts GB
N
nicholas
9:35 PM

JC: Hi,loss of signal can be due to inversion loss,in vhf days,swindon was badly affected due to the
signals being twisted by the terain,try inverting the aerial,try at ground level,but perhaps replace all
coax and plugs first.

link to this
nicholas's 15 posts GB
N
nicholas
9:43 PM

Hi,it seems lot of the problems here are caused by signal twisting,absolutely chronic in vhf days,try in all
cases,renew all coaxial cable and plugs,get indooor aerial and scan to see what the local field strength
is like,relocating the aerials,try ground level but also inverting the aerials,signal twisting may be yr problem,local high buildings can cancel one or more channels,the signals are bounced around like
a yo-yo.

link to this
nicholas's 15 posts GB
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