Full Freeview on the Caradon Hill (Cornwall, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 50.511,-4.437 or 50°30'38"N 4°26'14"W |  | PL14 5LT |
The symbol shows the location of the Caradon Hill (Cornwall, England) transmitter which serves 180,000 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 Caradon Hill (Cornwall, England) mast?
Caradon Hill transmitter - Caradon Hill transmitter: Possible effect on TV reception week commencing 11/11/2024 Pixelation or flickering on some or all channels 
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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
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Caradon Hill 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
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Caradon Hill transmitter?
BBC Spotlight 0.8m homes 2.9%
from Plymouth PL3 5BD, 26km east-southeast (123°)
to BBC South West region - 107 masts.
ITV West Country News (West) 0.8m homes 2.9%
from Plymouth PL7 5BQ, 32km east-southeast (116°)
to ITV West Country region - 107 masts.
All of lunch, weekend and 50% evening news is shared with West Country (East)
Are there any self-help relays?
| Barleycombe | Active deflector | 25 km E Plymouth | 3 homes |
| Parracombe | Transposer | 17 km NE Barnstaple | 80 homes |
How will the Caradon Hill (Cornwall, England) transmission frequencies change over time?
| 1961-80s | 1984-97 | 1997-98 | 1998-2009 | 2009-13 | 27 Mar 2019 | ||||
| VHF | A K T | A K T | A K T | A K T | A K T | ||||
| C12 | ITVwaves | ||||||||
| C21 | +SDN | SDN | |||||||
| C22 | BBC1waves | BBC1waves | BBC1waves | +BBCB | BBCB | ||||
| C24 | -ArqA | ArqA | |||||||
| C25 | ITVwaves | ITVwaves | ITVwaves | +D3+4 | D3+4 | ||||
| C27 | -ArqB | ArqB | |||||||
| C28 | BBC2waves | BBC2waves | BBC2waves | +BBCA | BBCA | ||||
| C30 | _local | _local | |||||||
| C31 | com7 | ||||||||
| C32 | C4waves | C4waves | C4waves | ||||||
| C37 | com8 |
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 12 Aug 09 and 9 Sep 09.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 500kW | |
| BBCA, D3+4, BBCB | (-7dB) 100kW | |
| SDN, ARQA, ARQB | (-10dB) 50kW | |
| com7 | (-16.3dB) 11.6kW | |
| Mux 1* | (-20dB) 5kW | |
| Mux 2*, Mux A*, Mux B*, Mux C*, Mux D* | (-21dB) 4kW | |
| com8 | (-24.2dB) 1.9kW |
Local transmitter maps
Caradon Hill Freeview Caradon Hill DAB Caradon Hill AM/FM Caradon Hill TV region BBC South West West CountryWhich companies have run the Channel 3 services in the Caradon Hill transmitter area
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Saturday, 7 May 2016
MikeP: please explain how I do feedback, sorry I am very new to this site.
Ch21 no signal
Ch24 good signal now, signal quality none
Ch27 strong signal, good quality.
Had new aerial, aerial booster and wiring less than 12 months ago.
Signal on com 5 always seems to drop when we get high pressure.
Thanks for all your help so far. As soon as I know how to leave feedback, I shall do so. And it will be good feedback.
Cheers
Chris
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MikeB3:11 PM
Christopher Wilton: You just provided feedback, by simply replying!
On Ch24 and 27, what do you mean by 'good signal? Do you have an actual number or percentage? 'Good' or 'strong' means different things to different people.
I think MikeP's idea of swapping out the aerial lead is a great one - very cheap, and easy to do, and may cure the problem. If nothing else, it ticks something off the list. Try it.
The booster sounds odd for a transmitter only 26km away with a clear signal path - are you perhaps getting too high a signal because of it. Can you switch it off?
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MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
MikeB: thanks for the reply.
The freeview manual tuning function has a bar for signal strength, which shows about 60-70%, but also has a signal quality which says none, poor, medium, good or very good.
Ch24 shows about 60-70% on the bar, but quality says none. It's hilly around here, so I am not totally sure we have direct line of sight.
Thank you for all the help.
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Sunday, 8 May 2016
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MikeB6:39 PM
Christopher Wilton: 60-70% should be fine, so thats odd. You can check the signal path yourself by putting in your postcode when you comment, and lots of links below your comment will appear, including terrain plot.
I think this is one for the signal gurus!
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Richard Dunn9:48 PM
Callington
No reception / signal at all tonight (Sunday 8th), none last night either - after patchy pixellation and short period of distorted image on BBC1 (which was the only one that actually tried to appear). All that I get is "Status" "No signal" or Status "no video or audio". I'm in a valley on the n side of Kit Hill. Relatively recent aerial adjustment by Aerial Masters showed good signal response and nothing has changed here since. Roof aerial, PL17 8HG. Freeview. Suggestions?
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
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jb3811:34 PM
Richard Dunn: Although nothing of a physical nature has changed at your end of the equation, the fact of your reception from the Caradon Hill transmitter being of a non line of sight nature, i.e: the Megalithia terrain indicator showing a sizeable obstruction to the signal path from the transmitter at approximately 1 mile prior to your location, making reception vulnerable to slight changes in atmospheric conditions, something which occurs most of the time with no effects whatsoever being noticed in most areas, the exception being where signals are only received via diffraction (signal bending) such as applicable to your particular location.
Needless to say, nothing can really be done to alleviate this type of problem.
PS: You can view the signal path problem referred to by opening the undermentioned link.
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
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Tuesday, 10 May 2016
Thanks for all the comments and help guys. Pick has now returned via a retune and ch24 is there but poor signal st
No changes to hardware, so I can only guess it's all atmospheric.
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Wednesday, 11 May 2016
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MikeB6:05 PM
Christopher Wilton: Why would that particular mux be hit, and why for so long? I suspect you might have a dodgy wire somewhere.
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Thursday, 16 June 2016
D
denyse shorrocks2:16 PM
my signal has been playing up for weeks now . ....it seems to coincide with the sky advert about changing to sky ..... ...... seeing as I pay a TV licence every year , ...it seems only fair that I should receive a service ! and , no , it is not my aerial at fault ......
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Richard Cooper3:18 PM
Norwich
denyse shorrocks: Hi Denyse. You are unlucky that there has been an announcement that viewers who use the Caradon Hill transmitter are likely to experience disruptions today. That's all it says. It would be better if 'they' gave a reason, such as "essential engineering works". it looks like this disruption comes less than a week after there really were engineering works! It does rather seem that our broadcast transmitter network is getting more like railways in terms of the frequency (excuse the pun) of engineering works! Unfortunately there is no replacement bus service apart from Freesat, and unless you can install it yourself, the installation cost, plus the cost of a TV or box that can decode satellite tv signals seems excessive when you've paid 145 pounds and 50 pence for a year's worth of tv already! Richard, Norwich.
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Richard's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
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