Full Freeview on the Mendip (Somerset, England) transmitter
 | 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.
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 05/06/2023 Pixelation or flickering on some or all channels 
_______
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
|
|
Sunday, 1 July 2012
B
Ben Ward10:15 PM
Melksham
Thank you jb38 - the situation is that the Humax antenna power selector is now set to OFF; it was indeed switched ON when I checked. It doesn't seem to have affected the situation with the Panasonic (or indeed a Sony VTX-D800U I am using) however, still non-existant.
Cheers
| link to this comment |
Monday, 2 July 2012
L
Lordgeous11:53 AM
Bath
OK Ben, its Wilts Ariels and his name's Kevin on 07817 212 508. (£45 call out charge). Good luck.
| link to this comment |
J
jb386:40 PM
Ben Ward: Thanks for that update, but before you call out anyone I would like if you could carry out another test or two based on you having previously mentioned that you were getting a 100% strength and quality indication on the Humax, the first being that I would like you to try the same test again now that you have turned off the Humax's aerial power supply facility, because if the signal indicated on the Humax is not now 100% nor anywhere near it, then that's liable to indicate that there is a powered booster in line.
Further advice dependant on the result.
| link to this comment |
B
Ben Ward10:00 PM
Melksham
Will do, jb38 my posting about the helpful service engineer was just in case I ended up in a deadend. Will respond to your new question tomorrow (I'm out right now)
| link to this comment |
Tuesday, 3 July 2012
B
Ben Ward8:59 PM
OK, I repeated the test I did before. Humax signal strength is about 75-80% and quality is 100%. Antenna power is off.
Transferring the aerial to the Panasonic and doing those tests again showed that strength varies from/flickers between 0-20% at best; quality varies from 85-100% which is pretty much what it was before when antenna power was on, on the Humax.
| link to this comment |
Wednesday, 4 July 2012
M
Mark Fletcher3:00 PM
Halifax
Colin.Can we assist you !
| link to this comment |
J
jb388:49 PM
Ben Ward: If the signal strength / quality on the Humax is indeed as you have reported then provided that you used exactly the same connections (jump lead from same socket) into the Panasonic then there is no reason whatsoever for it likewise not doing the same, that is unless the signal is slightly too strong or that the actual set has a problem, as although Humax tuners are undeniably excellent Panasonic types still has the edge on them for sensitivity.
Have you as yet tried resetting your Panasonic to its shipping condition? this then followed by an "Auto-set up" automatically starting after the set is switched on again. Another thing I would like you to try albeit that it might be a bit of a bother, is to leave the Humax on the same signal test screen that you had used for your report and then switch off the mains power supply to your 4 way splitter, this followed by a further check being made on the signal level that's indicated the Humax to see if it has changed any by doing this, which of course it should "if" the splitter is working OK, as this is the best way to verify for certain if a splitter or booster is working.
That said though, I noted in an earlier posting that you do refer to a second rooftop aerial, and if this is the case and your Humax / Panasonic is fed directly from this then there isn't any point in trying the power off check on the splitter, although you should still try the shipping condition test on the Panasonic.
NB: Regarding the Humax, although you haven't mentioned as such but its assumed that you did carry out a visual quality check the output from the Humax via a scart coupling into the Panasonic?
| link to this comment |
C
Charles Stuart10:57 PM
I recently moved from Kettering to Bristol. In Kettering my TV signal was strong enough to pass through a Freeview HD box, a Humax PVR, a Panasonic DVD recorder and still give a decent picture on the TV. In Bristol, the signal doesn't get past the Freeview HD box unless it's on, in which case I can also use the PVR. However, I cannot get Com 6/Arq B even on the HD box. The aerial is on the roof. But it gets complicated. There's a loft aerial feeding my bedroom TV and that receives all multiplexes. I can also receive all multiplexes on my Eye TV for Mac using an indoor aerial. The roof aerial is minute. The loft aerial is somewhat larger but not a high gain aerial. The house was built in the 1970s and the aerial socket in the living room looks like the original. How do I tell if the problem is the cable, the aerial or even that the aerial is in a null point?
My idea is to intercept the aerial cable in the loft and fit a new, higher gain aerial there. (The rooftop aerial is too high for me to get to it.) If the problem is the cable, will a high gain aerial have any chance of working? I'm looking for a solution that avoids having to call out an aerial installer as I have a low income and I do know how to fit an aerial and find the signal. (51.4634,-2.5264)
| link to this comment |
Thursday, 5 July 2012
J
jb387:20 AM
Charles Stuart: Unfortunately the signal levels expected at your new location cannot be assessed as the post code provided indicates a disallowed characters error.
However as far as the signal not passing through the box is concerned, make sure that the "power saving on standby" is NOT switched on (if a newer type box) as that will kill the signal.
| link to this comment |
C
Charles Stuart7:31 PM
@jb38 - Thanks. Changing the box setting from "passive" to "active" allows the signal through. I am about half way up Two Mile Hill Road on a side road about 200 yards from the junction. I am quite high up and when I entered my post code, the system suggested that I could receive good signals from Mendip (best), Bristol Kings Weston, Bristol Ilchester Crescent or Wenvoe.
Can anyone advise how to tell if the co-axial cable needs replacing? (51.4634,-2.5264)
| link to this comment |
Select more comments
Your comment please