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Full Freeview on the Darvel (East Ayrshire, Scotland) transmitter

first published this on - UK Free TV
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The symbol shows the location of the Darvel (East Ayrshire, Scotland) transmitter which serves 150,000 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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Darvel (East Ayrshire, Scotland) transmitter.

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

Which Freeview channels does the Darvel 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
 H max
C22- (481.8MHz)446mDTG-20,000W
Channel icons
1 BBC One (SD) Scotland, 2 BBC Two Scotland, 7 BBC Alba, 23 BBC Three, 24 BBC Four (Scotland SD), 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 12 others

PSB2
D3+4
 H max
C25 (506.0MHz)446mDTG-20,000W
Channel icons
3 STV (SD) (STV Central (Glasgow micro region)), 4 Channel 4 (SD) Scotland ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 Scotland ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (STV Edinburgh), 35 STV+1 (STV Edinburgh),

PSB3
BBCB
 H max
C28 (530.0MHz)446mDTG-20,000W
Channel icons
56 5SELECT, 101 BBC One HD Scotland, 102 BBC Two HD (England), 103 ITV 1 HD (STV West), 103 STV HD (STV West), 104 Channel 4 HD Scotland ads, 105 Channel 5 HD, 106 BBC Four HD, 108 BBC Scotland HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -3dB
C32 (562.0MHz)446mDTG-810,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H -3dB
C34 (578.0MHz)446mDTG-810,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H -3dB
C35 (586.0MHz)446mDTG-810,000W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Al Jazeera Eng, plus 19 others

DTG-8 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 Darvel transmitter?

regional news image
BBC Reporting Scotland 2.4m homes 9.2%
from Glasgow G51 1DA, 31km north (1°)
to BBC Scotland region - 230 masts.
regional news image
STV News 1.3m homes 4.8%
from Glasgow G51 1PQ, 31km north (2°)
to STV Central (Glasgow) region - 94 masts.

Are there any self-help relays?

Craigie GardensTransposer1 homes 90 caravans
InversnaidActive deflector35 km N Dumbarton8 homes Hotel caravan park

How will the Darvel (East Ayrshire, Scotland) transmission frequencies change over time?

1984-971997-981998-20112011-135 Sep 2018
A K TA K TA K TA K TW T
C22-BBCABBCA
C23ITVwavesITVwavesITVwavesSDN
C25D3+4D3+4
C26BBC2wavesBBC2wavesBBC2wavesArqA
C28BBCBBBCB
C29C4wavesC4wavesC4wavesArqB
C30_local
C31com7
C32SDN
C33BBC1wavesBBC1wavesBBC1waves
C34ArqA
C35C5wavesC5wavesArqB
C37com8
C55tv_offcom7tv_off
C56tv_offCOM8tv_off

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 11 May 11 and 25 May 11.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-5 100kW
BBCA, D3+4, BBCB(-7dB) 20kW
SDN, ARQA, ARQB(-10dB) 10kW
com8(-10.9dB) 8.19kW
com7(-11.2dB) 7.5kW
Mux 1*, Mux 2*, Mux A*, Mux B*(-14dB) 4kW
Mux C*, Mux D*(-17dB) 2kW

Which companies have run the Channel 3 services in the Darvel transmitter area

Aug 1957-Jun 1997Scottish Television
Jun 1997-Dec 2014STV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Darvel 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.

Is the transmitter output the same in all directions?

Radiation patterns withheld

Comments
Friday, 10 June 2011
R
Richard
3:20 PM
Erskine

Hello Mike,
Very interesting !! I'm not line of sight to Blackhill incidentally, well, I don't consider myself as line of sight as I cannot see the mast. I'm about 50 foot ASL here, there may be other obstacles in the path, I don't know for sure. Maybe need a path profile analysis to find out for sure !! I could try that on my GPS and see what it shows. Incidentally yes, Freeview channel 22 (Ideal World)was one of the channels that could be received on the Freeview TV perfectly 100%, but not on the Philips Freeview box until I retuned it to the second 'Central Scotland' option that was presented to me. The TV (when I retuned it) offered no such option - it just retuned with no prompts at all. I guess that is what the Philips Freeview box should have done too. Thanks again for your helpful comments.
Regards,
Richard

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Richard's 12 posts GB
Strathearn
3:32 PM

Richard: I haven't read all your recent postings, but are you aware that between you and Darvel there's Whiteless, the largest windfarm in Europe, and here in Clydebank [just across the river from Erskine and also - in theory - in the Darvel transmission area] it is the cause of regular receiving problems. So much so, that any complaints are passed on to Scottish Power who then will offer a free service to redirect your aerial to Blackhill.

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Strathearn's 13 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

4:52 PM

Richard: I was looking at Terrain - shows radio profile between two UK sites to optimise you DTT, Freeview, DAB or analogue TV reception . That site suggests using Multimap to find the National Grid Reference, but Microsoft have since closed it down after introducing their more recent Bing Maps service. Instead I use nearby.org.uk to get the postcodes for a co-ordinate.

It does indeed show that the path to Darvel relies on refraction over Queenseat Hill and the Whitelees wind farm.

link to this comment
Mike Dimmick's 2,486 posts GB
R
Richard
7:07 PM
Erskine

Hi Strathearn and Mike.
Thanks for the info. I didn't know about the Whitelees Wind Farm issue - but the Darvel signal here is not good - I tried moving the TV antenna around to face Darvel and retuned the TV. It didn't pick any usable signal up !! Which totally surprised me. So I opted for Blackhill and I think it will obviously be even better after 22nd June when the power is upped. But right now from Blackhill it is entirely OK.
Thanks again.
Regards,
Richard

link to this comment
Richard's 12 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

9:41 PM

Mike Dimmick: (2.35pm posting) Yes, and as Richard has since confirmed, you were obviously quite correct regarding the true meaning of Ch22, as all comments made by me were based on taking at face value Richards 9.24pm posting where "UHF"channel 22 was mentioned, that said though I do admit to having wondered how such a strong signal could be received at Erskine, especially considering its just over 20 miles or so away from Darvel with a PSB1 maximum ERP of only 20Kw, this compared to Blackhill's PSB1 on an ERP of 100Kw.

I had just put this doubt I had down to the possibility that Blackhills signal wasn't being received quite so good in the Erskine area, something that actually applies in many parts of Glasgow let alone to the West of it, and of course if that was the case then Darvel could appear as a better bet for reception, and indeed as is used by some friends of mine who reside in the South of the city, them magically managing to escape the effects of the ever present Whitelee's wind farm menace.

However, to finalise, as it transpired the Ch22 being referred to was Ideal Worlds EPG channel number and not the multiplex channel number, not exactly the best of examples to use for determining the cause of a possible problem.

link to this comment
jb38's 7,179 posts GB
R
Richard
10:40 PM
Erskine

Hi jb38,
I'm sorry if I confused anyone here - I was confused myself as to what was going on to be honest. I only used the Freeview channel 22 as an example because that was the one my wife said she could not watch after the new Philips box was tuned. Scientifically not the best one to pick I guess. She said she could watch it OK when she switched back to the Freeview TV. This is what prompted my initial query as to why this should be with both Freeview TV and Freeview external box on the same antenna (and as I thought, on the same UHF channel). However it seems to have been down to my misinterpretation of what was actually happening. When I subsequently forced the Philips Freeview box into a retune, I then saw the two 'Central Scotland' options and it was asking me to chose one or the other. The first time I had tuned the Philips box I did see this option but just thought nothing of it and chose the first one. This was not the same as the TV was tuned to. Hence the subsequent problems and queries from myself. However, I think I've now taken enough of your time up and will thank you for all the help and direction I have had. It can only therefore be that the Philps box is actually receiving the Darvel transmissions off the side of the antenna and reporting it as a option to the main Blackhill signal itself. I am still puzzled why the Phiilips box did this - and not the TV when it was retuned.
Thank you again.
Regards,
Richard

link to this comment
Richard's 12 posts GB
Saturday, 11 June 2011
J
jb38
sentiment_very_satisfiedPlatinum

11:09 AM

That's OK Richard, a fully understandable error! - Digital television has the unfortunate side effect that although it may well offer a far wider selection of programme choices etc its reception by any means other than satellite can introduce a whole range of difficulties for the average viewer, and who in most cases has hitherto enjoyed years of reasonably stable analogue reception, and I am quite sure that even when all the transmitters in the UK have been switched over to their final powers / frequencies that its almost inevitable that there will still be a constant flow of people with a range of queries over what ever existed with analogue transmissions, DTT just invites it!

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jb38's 7,179 posts GB
Tuesday, 14 June 2011
D
david c
11:00 AM

jb38: I live in the south of the Isle of Arran. I've been running 4TV's using indivial freeview boxes supplied by a good quality digital compatible arial with mast head booster and good qual 4 way signal booster. Up until 2 weeks ago I got very occasional problems with picture break up. Now as soon as it gets to dusk I begin to lose all BBC channels. They all free then break up. As soon as dusk has past the picture returns to normal? I wasn't aware of atmospherics effecting DVT? I know I'm right between 2 transmitters - Darvel & Ulster - any ideas?

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david c's 1 post GB
R
Richard
2:14 PM
Erskine

Hello David,
That's an interesting one. Temperature inversion sometimes causes strange signal paths especially across water. UTV on Black Mountain is SW of you and almost off the back of your antenna more or less if you are pointed at Darvel so shouldn't be giving you any problems. Dusk (when the sun dips below the horizon and the temperature drops) could be causing some momentary ducting with temperature inversion - but you would need the experts to respond to that one. I'm not so sure if that would be the cause to be honest. Especially as it only started two weeks ago. I'd be interested to see what Mike, Brian or jb38 have to say about that one.
Regards,
Richard

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Richard's 12 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

3:55 PM

david c / Richard: I think that my last comment to you is very much applying with david c's problem, insomuch that any RF signal no matter of what composition can get warped by reflections or obstructions, reflections being the most likely in david c's case, or to be more accurate the lack of! as I feel that they are in evidence when the reception is good.

Analogue TV signals can vary up and down quite a bit without much being noticed on the screen, the only clue being that the picture might turn a little grainy in the evenings or whatever, however in the case of digital as soon as the signal starts to go downward and be hovering anywhere near the cut off threshold, known as the digital cliff", then pixilation and other problems start to show up, after which any further drop in signal strength will cause it to fall under the receiving threshold of the equipment in use, this varying dependant on the sensitivity etc of the TV or PVR in use, Panasonic and Humax being particularly good in this respect.

To be honest about it nothing can really be done, but it would be interesting if you david c could take a note of the signal strength before then after the picture cuts out, as even although it may have cut out the signal strength / quality indications will still be shown in the appropriate section of the tuning menu.

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jb38's 7,179 posts GB
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