Full Freeview on the Mendip (Somerset, England) transmitter
Brian Butterworth first published this on - UK Free TV
Google Streetview | Google map | Bing map | Google Earth | 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.
_______
Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
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 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.
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?
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 | C5waves | C5waves | |||||||
C48 | SDN | SDN | SDN | SDN | |||||
C49tv_off | BBCA | BBCA | |||||||
C51tv_off | LBS | LBS | |||||||
C52tv_off | ArqB | ArqB | ArqB | ||||||
C54tv_off | C4waves | C4waves | C4waves | D3+4 | D3+4 | D3+4 | |||
C55tv_off | com7tv_off | ||||||||
C56tv_off | ArqA | ArqA | ArqA | COM8tv_off | |||||
C58tv_off | BBC1waves | BBC1waves | BBC1waves | BBCB | BBCB | BBCB | |||
C61 | ITVwaves | ITVwaves | ITVwaves | BBCA | |||||
C64 | BBC2waves | BBC2waves | BBC2waves |
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
|
|
Wednesday, 10 August 2011
Thursday, 11 August 2011
L
Lynne Smith7:39 PM
My problem is i'm picking up the local channels (West) on both my tv's upstairs,but i'm getting the Welsh ones downstairs!How is this possible? Thanks in advance
link to this comment |
Saturday, 13 August 2011
B
bruce8:09 PM
Bath repeater is transmitting a limited number of freeview, are there plans for the repeater to become fully functional or will user in this and similar areas always be the poor relations?
link to this comment |
Monday, 15 August 2011
bruce: No. In fact quite the opposite, the plans specifically disallow the possibility of the "full Freeview" service extending beyond the main 80 transmitters. If you want more channels, try Freesat - see Compare Freeview Light and Freesat TV | ukfree.tv - independent free digital TV advice .
link to this comment |
J
jason carter10:46 AM
Bath
hi, i have been having picture quality issues on various channels e.g film4,viva etc from Peasedown st.john postcode ba2 8aa. the mendip transmitter is at 237 degrees from centre of this postcode so popped up into loft to check out aerial allignment which was way off (about 200 degrees) so have realigned it. however the aerial itself looks ancient and very basic plus have 2 feeds coming off aerial with bare ends of coax cable attached to 2 screws on top of mast level with aerial "branches"! all looks very diy to me! also tried splitting signal in lounge to incorporate ps3 Playtv and signal even worse so have ordered plug in signal booster with necessary m/f bits-will this help please? finally tv in bedroom runs off other access point in lounge but is 6m cable length away so have to have 4m+2m coax joined-will 10m cable improve the signal strength in there too or is my issue in the loft? there are 2 huge trees outside too 10m and 30m respectively so hoping the 237 degree angle of aerial points between them (which i think it does on checking!) help as have just spent alot of money on new tv set up etc!
link to this comment |
jason's: ...
Tuesday, 16 August 2011
J
jason carter3:52 PM
can anyone tell me what would be the best type of loft aerial for peasedown st.john postcode ba2 8aa? the existing one is very basic with 2 coax cables attached to the screws where the top of the mast joins with the aerial ( i presume this is normal?) but the whole set up looks old and shabby. also can anyone recommend if i would need to install some type of booster/splitter either plug in or passive as the signal strength is below 75%. thanks in advance.
link to this comment |
M
Mike Dimmick5:09 PM
jason carter: I'd suggest using a Log40 - Online TV FM DAB Aerial sales . See Loft and indoor aerial installations for TV, FM and DAB for thoughts on fitting - also see http://wrightsaerials.tv/….pdf .
I would strongly recommend *not* using a booster. The signal strength meters on most boxes are completely useless, not being calibrated to anything sensible, and you could well have too *much* signal, not too little. If you're having problems, and you already have a booster, try removing it. If that doesn't help, try adding an attenuator.
link to this comment |
J
Jim F10:16 PM
jason carter: Two coax cables attached to one aerial is not normal or recommended (the mismatch will give significant signal loss).
Use one coax cable from the aerial to feed a passive two way (or however many ways you need) splitter. That will maintain the 75 ohm match and minimise your signal loss.
At around 16km from Mendip, you don't need a big aerial - though signal loss through roof tiles can vary substantially. Mendip is group C/D (and stays that way after the retune event on 28th September), so either a C/D aerial or a wideband should work fine.
Signal strength readings can be a combination of strength (power) and quality - its the quality that matters more than the power
link to this comment |
Tuesday, 23 August 2011
P
PETER9:48 PM
I have found that a logpereodic antena is the best solution in 90% of recption problems.Its not the amount of signal that is received but how clean the signal is in to the tv receiver. You can get a good picture on low signal as long as the signal is clean. Most rigers will do a good job.
link to this comment |
Select more comments
Your comment please