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Freeview Light on the Carhampton (Somerset, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.174,-3.409 or 51°10'27"N 3°24'32"Wsa_postcodeTA24 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 problems

The BBC and Digital UK report there are no faults or engineering work on the Carhampton (Somerset, England) transmitter.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 V max
C24 (498.0MHz)85mDTG-320W
Channel icons
1 BBC One (SD) West, 2 BBC Two England, 9 BBC Four, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 16 others

PSB2
D3+4
 V max
C27 (522.0MHz)85mDTG-320W
Channel icons
3 ITV (SD) (West), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 25 ITV4, 29 E4 +1, 34 ITV +1 (West),

PSB3
BBCB
 V max
C21+ (474.2MHz)85mDTG-620W
Channel icons
72 Shopping Quarter , 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, 105 Channel 5 HD, 204 CBBC HD, plus 1 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
H/V: aerial position (horizontal or vertical)

Are you trying to watch these 52 Freeview channels?

the effected channels
the effected channels
the effected channels
the effected channels

The Carhampton (Somerset, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4Music, 4seven, 5SELECT, 5STAR, 5USA, Aljazeera English, BBC Four HD, BBC News HD, Blaze, Blaze +1, CBeebies HD, CBS Drama, CBS Justice, CBS Reality, Challenge, Channel 5 +1, CITV, YAAAS!, Dave, Dave ja vu, DMAX, Drama +1, Film4 +1, Food Network, Forces TV, FreeSports, GB News, GREAT! movies, GREAT! movies action, HGTV, Horror Channel, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, More4 +1, Now 70s, Paramount Network, PBS America +1, pick, Quest +1, Quest Red, Quest Red +1, Really, RT HD, Sky Arts, Sky News, Smithsonian Channel, Talking Pictures TV, TCC, Together TV, Yesterday +1.

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?

regional news image
BBC Points West 0.9m homes 3.4%
from Bristol BS8 2LR, 64km east-northeast (61°)
to BBC West region - 60 masts.
regional news image
ITV West Country News (East) 0.9m homes 3.4%
from Bristol BS4 3HG, 66km east-northeast (64°)
to ITV West region - 61 masts.
All of lunch, weekend and 50% evening news is shared with West Country (West)

How will the Carhampton (Somerset, England) transmission frequencies change over time?

1984-971997-981998-20102010-135 Jun 2019
A K TA K TA K TA K TA K T
C21BBC1wavesBBC1wavesBBC1waves+BBCBBBCB
C24ITVwavesITVwavesITVwavesBBCABBCA
C27BBC2wavesBBC2wavesBBC2wavesD3+4D3+4
C31C4wavesC4wavesC4waves

tv_off Being removed from Freeview (for 5G use) after November 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

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. Carhampton 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
Saturday, 9 June 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:29 AM

CARHAMPTON transmitter - Freeview BBC Digital TV Off Air from 16:46 on 07 Jun to 18:16 on 07 Jun HD Digital TV Off Air from 16:46 on 07 Jun to 18:16 on 07 Jun [BBC]

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Transmitter engineering's 137,833 posts xx
Friday, 22 June 2012
Transmitter engineering
sentiment_very_satisfiedOwner

12:28 PM

CARHAMPTON transmitter - Freeview BBC Digital TV Off Air from 10:56 today to 11:12 today HD Digital TV Off Air from 10:56 today to 11:12 today [BBC]

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Transmitter engineering's 137,833 posts xx
Monday, 28 March 2016
Transmitter engineering
sentiment_very_satisfiedOwner

7:31 AM

CARHAMPTON transmitter - Possible service interruptions [DUK]

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Transmitter engineering's 137,833 posts xx
Tuesday, 5 April 2016
Transmitter engineering
sentiment_very_satisfiedOwner

12:09 AM

CARHAMPTON transmitter - Possible service interruptions [DUK]

link to this comment
Transmitter engineering's 137,833 posts xx
Friday, 26 July 2019
S
Steve Hill
11:58 AM

Transmitter engineering: For over a week now the relay at carhampton in somerset has been down. I'm a local tv engineer and have spent a lot of time retuning my customers to the welsh transmitters so they can at least watch something. Can you tell me what the problem is and when it might be fixed so I can pass this on to my customers?

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Steve Hill's 10 posts GB
N
Norman D Landing
12:45 PM

Steve Hill: which services are affected? The three multiplexes use three seperate transmitters, the only commonality is the transmission antenna and the electricity supply. So for all the services to be down would be a major fault, which im sure Arqiva's control room (manned 24/7 with remote monitoring of every transmitter in the country) would have noticed!

Are you sure there isnt something local causing interference, a new 4G mast or the like? Can you provide postcodes of some of the affected properties?

link to this comment
Norman D Landing's 1 post GB
S
Steve Hill
5:47 PM
Taunton

Norman D Landing: There are three of my customers in Old Cleeve, two at TA24 6HN and one at TA24 6HL, then there is one at West Quantoxhead TA4 4DH, pretty sure it's not local interference, Carmel is romping in at Old Cleeve, measuring the signal from Carhampton there I'm getting a reasonable strength but no signal quality at all.

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Steve Hill's 10 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

10:42 PM

Norman D Landing: Now there's a name that rolls of the tongue! Not Mellie's cousin? He was well clued up on Arqiva monitoring!

Steve Hill:

Well I'm glad I don't live at any of those postcodes, putting each into Digitaluk's coverage checker at Digital UK - Coverage checker shows that none get ideal reception from the local transmitters and Carhampton is only a "Light" transmitter, not predicted to be receivable at your 3rd postcode.

I'm wondering if the primary cause at this time is the current tropospheric propagation as you have signal but no quality. There's some not too distant Welsh repeaters using the same UHF channels as Carhampton IIRC without looking.

PS. btw any connection with UKCR?

link to this comment
Chris.SE's 2,572 posts GB
Saturday, 27 July 2019
S
Steve Hill
6:23 AM

Chris.SE: Yes I was surprised about the third postcode myself but it was a very strong signal when I installed the aerial a few years ago. Carhampton has also served the Old Cleeve postcodes very well for many years. I don't think any Welsh transmitter that could have any influence is using the same UHF channels, Carmel has a couple of adjacent channels but they shouldn't have any effect.

I have many customers in the area but only a handful have contacted me, the others may have retuned to Carmel or Wenvoe themselves, I don't know, but I have noticed that my affected customers are all to the east of the relay.

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Steve Hill's 10 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

5:39 PM

Steve Hill:

I only mentioned Welsh relays because of the direction aerials will tend to be pointing. They're all low power of course, but with tropospheric propagation, it's amazing where signals can come from, and of course there are several high power transmitters around the country & abroad using these channels. I haven't done any serious dxing in recent years, but many moons ago when we still had B/W 405 lines band 1, even using an indoor aerial I was getting eastern bloc signals (not stable enough for a good picture for more than a moment or two) but the interference remained for some time!

There's some other more local transmitters using some or all of the same channels, here's a few just for example -
Bath, Bristol Montpelier, Portbury, Hutton, Portishead, Porlock, Brushford .......
One of the slightly higher power Welsh ones is Aberdare.
Whilst they're low power, with the sort of conditions we've had lately, interference could be coming from anywhere! Apologies for probably telling granny how to suck eggs!

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Chris.SE's 2,572 posts GB
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