Freeview Light on the Carhampton (Somerset, England) transmitter
|Google map||Bing map||Google Earth||51.174,-3.409 or 51°10'27"N 3°24'32"W||TA24 6UZ|
The symbol shows the location of the Carhampton (Somerset, England) transmitter which serves 700 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 problemsThe BBC and Digital UK report there are no faults or engineering work on the Carhampton (Somerset, England) transmitter.
Which Freeview channels does the Carhampton 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 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
H/V: aerial position (horizontal or vertical)
Are you trying to watch these 60 Freeview channels?
The Carhampton (Somerset, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4Music, 4seven, 4seven HD, 5SELECT, 5Spike, 5STAR, 5STAR +1, 5USA, 5USA +1, AlJazeera English (SD), Aljazeera English HD, BBC Four HD, BBC News HD, Blaze, Blaze +1, CBeebies HD, CBS Drama, CBS Justice, CBS Reality, CBS Reality +1, Challenge, Channel 4+1 HD, Channel 5 +1, CITV, Dave, Dave ja vu, DMAX, Drama, E4 +1, Food Network, Forces TV, Freesports, Home, Horror Channel, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Together TV +1, Movies4Men, NOW 80s, Now 90s, Paramount Network, PBS America, pick, Pick +1, Quest +1, Quest Red, Quest Red +1, Really, RT HD, Sewing Quarter, Sky News, Smithsonian Channel HD, Sony Movie Channel, Talking Pictures TV, TCC, Together TV, Yesterday, YourTV.
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.
Which BBC and ITV regional news can I watch from the Carhampton transmitter?
BBC Points West 0.9m homes 3.4%
from Bristol BS8 2LR, 64km east-northeast (61°)
to BBC West region - 60 masts.
How will the Carhampton (Somerset, England) transmission frequencies change over time?
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tv_off Being removed from Freeview (for 5G use) by 30 June 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?
|BBCA, D3+4, BBCB||20W|
|Analogue 1-4||(-4dB) 8W|
Which companies have run the Channel 3 services in the Mendip transmitter area
We were reminded (by Michael) that reception of Carmel on the North Devon coast is significantly affected by the height of the tide in the Bristol channel. No doubt it will affect Kilvey Hill as well which, although low power, can easily be strong enough to cause interference problems.
Whether log periodic aerials pointing in a suitable direction might give the best chance of rejecting Kilvey Hill as they have no side lobes and better front to back ratio compared to a yagi.
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This is an intruiging problem. Carhamptons transmit antenna system is a simple cardioid colinear array (pics on mb21) so a fault with the transmit antenna, while likely to cause a pattern change, would result in a noticable change in signal strength but not quality. The only things that can cause a quality loss to this extent on all three muxes are local interference, adjacent channel interference (these days often 4G) or as Chris SE has discovered - a strong co-channel interference source. Looking at the postcodes and the bearings from them to the relay, and to Kilvey Hill, it does look like that is the case here!
It looks like a somewhat imperfect level of spectrum planning! Plus, remarkably bad luck in that all three channels are co-channel with Kilvey Hill!
I suspect, as mentioned, the way to alleviate this is with some clever use of receive antenna pattern, bearing, and use of available shielding (positioning on side walls etc to try and block Kilvey)
one thing to note though - Kilvey is only part way through the 700MHz clearance process, at some point in the future that process will be completed. Ive no idea whether that will be a further frequency change or not
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Norman D. Landing:
Based on the currently published information there are no further planned changes at Kilvey Hill or Carhampton come to that. And there doesn't seem to be any predicted reception changes either, which I wouldn't expect now that changes in the West, SouthWest & South Wales have been completed. It's only if there's a lift on might one expect additional reception issues. Thanks for reminding us about using available shielding from things like sidewalls, a trick I've employed, a while in the past.
Well I hope you enjoy your break. When you've had a go & hopefully solved some of your customer problems it's probably worth getting everyone you know that's had/having issues to complain to the Freeview Advice line making the specific point that things went awry when Kilvey made its final change on July 17th.
Based on passed experience, it needs multiple complaints for anything to get logged properly, one person complaining even on others behalf has zilch effect. Without multiple complaints Arquiva/OFCOM certainly won't be likely to consider any sensible resolution to the problem. (The easiest being change Carhamptons channels IMHO).
I wouldn't get them to complain before you've done all you can as it's possible The Freeview Advice line might arrange for one of their listed aerial installers to visit people and resolve any aerial issues. Other than that, one other possible solution, especially for those with TV set with a built in satellite tuner is to go for Freesat.
If people have an adequate Broadband connection another rather inelegant solution would be to stream the main channels.
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Chris.SE: Thanks, I will report back in September with any solutions. I had considered Freesat for my customers but that involves quite an outlay for most of them, as it is, I've left them on a very good Carmel signal until I can get back to them.
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