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Full Freeview on the Black Hill (North Lanarkshire, Scotland) transmitter

first published this on - UK Free TV
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The symbol shows the location of the Black Hill (North Lanarkshire, Scotland) transmitter which serves 940,000 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 Black Hill (North Lanarkshire, Scotland) transmitter.

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

Which Freeview channels does the Black 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.

 H max
C46 (674.0MHz)576mDTG-3100,000W
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

 H max
C43 (650.0MHz)576mDTG-3100,000W
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 ITV +1 (STV Edinburgh), 35 STV+1 (STV Edinburgh),

 H max
C40 (626.0MHz)576mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD Scotland, 102 BBC Two HD (England), 103 ITV 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

 H max
C41+ (634.2MHz)576mDTG-8100,000W
Channel icons
12 Quest, 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 MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

 H max
C44 (658.0MHz)576mDTG-8100,000W
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 8 others

 H max
C47 (682.0MHz)576mDTG-8100,000W
Channel icons
 FreeSports, 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 Aljazeera English, plus 19 others

 H -13dB
C30 (546.0MHz)576mDTG-125,000W
Channel icons
from 2nd June 2014: 8 STV Glasgow,

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 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 Black Hill transmitter?

regional news image
BBC Reporting Scotland 2.4m homes 9.2%
from Glasgow G51 1DA, 26km west (271°)
to BBC Scotland region - 230 masts.
regional news image
STV News 1.3m homes 4.8%
from Glasgow G51 1PQ, 26km west (271°)
to STV Central (Glasgow) region - 94 masts.

Are there any self-help relays?

Ardtornish ATransposer22 km NW Oban15 homes
BalquhidderTransposer12 km NW Callander42 homes
Benmore BActive deflector50 m WNW Glasgow7 homes
Blair DrummondTransposer5 homes caravan park
Blyth BridgeActive deflector30 km SW Edinburgh50 homes
GlendaruelActive deflector40 hotel40 homes hotel
Glendaruel BActive deflector12 homes (second level)

How will the Black Hill (North Lanarkshire, Scotland) transmission frequencies change over time?

1957-80s1984-971997-981998-20112011-133 Oct 2018

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 8 Jun 11 and 22 Jun 11.

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

Analogue 1-5 500kW
SDN, ARQA, ARQB, BBCA, D3+4, BBCB(-7dB) 100kW
com7(-10.7dB) 42.9kW
com8(-11.1dB) 39.2kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-14dB) 20kW
LG(-20dB) 5kW

Which companies have run the Channel 3 services in the Black Hill 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.

Sunday, 3 April 2011
8:18 PM

Thanks, Mike. I will wait and see after the switchover. Cheers, Angela

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Angela's 2 posts GB
Mike Dimmick

8:27 PM

Scott: if you get occasional breakup or loss of channels, 10 dB is a great improvement. If everything's solid now, you won't notice a thing. If you already have very high percentages, you could run into problems with too much signal.

The Humax HD boxes are supposed to be properly calibrated this time (the SD boxes aren't), so 95% is safe for now - but it indicates a pretty large signal. Adding 10dB is likely to be too much signal. If you get picture break-up or loss of channels after the switchover, remove any amplifiers or boosters, and if that doesn't fix it, try adding an attenuator.

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Mike Dimmick's 2,486 posts GB
Monday, 4 April 2011

6:18 PM

Mike: Thanks very much for your helpful comments.

I regret to say that I have misled everyone. Although I have a Humax HD box, the readings were taken from the TV (Sony Bravia). I have now checked via the Humax menu and the HD multiplex is showing as 61% with the SD BBC multiplex at 68%. I am new to all this so beg forgiveness.

The reception is rock solid. I must be about 30 miles from the transmitter. I assume I should not be worried about excess signal.

My real purpose in posting was to make the point that although others are having problems with HD it is fine for me, and I am not exactly in a charmed position! I wonder if there could be a directionality in the temporary service that sends a good signal due west but leaves people at other compass points with problems.

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Scott's 110 posts GB

9:40 PM

Correction: nearer to 20 miles from transmitter.

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Scott's 110 posts GB
Tuesday, 5 April 2011
4:46 PM


10kw = Xdb
20kw = 2Xdb
40kw = 4Xdb
80kw = 8Xdb
100kw = 10Xdb

i.e. Each time the signal strength is increase by 3db you double its strength! As ex aerial installer I would say that an increase of 10db is a considerable increase!

The actual signal received at your aerial is dependant on a considerable number of variations. Therefore it is almost impossible to predict an accurate signal strength received at any one particular situation, but an aerial should be always mounted outside clear of any immediate obstructions for best results.


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Maurice's 13 posts GB

6:19 PM

Hopefully we don't get problems with over powered signals :S Currently, most channels in my house are at 97/98% signal strength and quality (~ 2.5 - 3 miles from Blackhill)

I also have a relative <1.5 miles from the transmitter, who already suffers form overpowered signals on a few channel. Switch Over will probably make this worse!

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andrew1210's 26 posts GB
Thursday, 7 April 2011
10:54 AM

Thanks for the advice Scott. Turns out the problem looks like it is local interference / something else. The aerial is picking up all channels fine.

I've spent some time over the last few days checking the aerial and cabling. Both seem fine.

The signal strength / quality seems fine on all channels except 55, 59 and 65. On 55 and 65, the strength sits somewhere between 30 and 70 and is variable. On 59 (the HD channels) it is the worst and sits at 0.

When I pick the fly lead up and hold it higher than the rest of the cables behind the TV (like you would with headphones on a mobile phone radio when they're acting as an FM antenna), the quality on all these channels goes up to 100 and everything is fine.

I have fiddled with the back of the box to check for bad connections there. I have also rerouted the cable multiple times to avoid sitting near all other cables. It seems quite random.

I'm suspecting the Humax HD box may have a problem with it's aerial in (dodgy solder joint / something else). That would hold if it did it for all channels, but the rest are rock solid at 100 quality.

The other option is I fitted an HDMI switch box just before all this started. Before that I'd had zero problems for years on all these channels. I completely removed the HDMI switch and left the Humax plugged directly into the TV with no other devices, but the problems still remained.

So I've narrowed it down a bit - but am still confused. If it makes any difference, the aerial has (and has had for around 4 years) a masthead amplifier powered via the 5v on the Humax. That is working fine.

Has anyone got any ideas how to solve this? I'm getting a bit lost in it, but maybe I just can't see the wood for the trees - and I'm sure there are far more experienced people than me.

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steve's 3 posts US

1:03 PM

Steve: My Humax 9300T has an inbuilt Co-ax tester which alerts you if you have a short in the aerial circuit.I'm guessing that your newer model will also have this feature so perhaps you can eliminate this as contributing to the fault.Have you by any change workmen or gardeners using Two Stroke Power Tools nearby today? This can sometimes give intermittent interference. BIt of a long shot but I get that here sometimes.

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Iain's 25 posts GB
2:17 PM

Iain: Thanks for the suggestions. I will make sure about the short circuit, but I think it is fine. No power tools I'm afraid. This has been going on constantly for around a week :-(

I was thinking about shelling out for a fully screened fly lead in case the one I have is causing it, but I have tried with 3 different fly leads with the same result.

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steve's 3 posts US

2:58 PM

Steve: If you have reverted to your original set up configuration, including the original fly lead, prior to introducing the HDMI Switch/Box. Can you, whilst leaving the TV switched on; switch off the Humax using the rocker switch at the rear of the box; leave it for a couple of minutes and switch it on again. The Screen with show you the Humax fire up sequence and any coax short circuit before showing the last channel viewed.Failing that a complete factory reset might clear things but if you do this you will lose any listed recording schedules( NOT your recordings just the schedules). Of course you may have already done this.

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Iain's 25 posts GB
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