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

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps55.861,-3.874 or 55°51'40"N 3°52'27"Wsa_postcodeML7 4NZ


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.

Are there any planned engineering works or unexpected transmitter faults on the Black Hill (North Lanarkshire, Scotland) mast?

Black Hill transmitter - Black Hill transmitter: Possible effect on TV reception week commencing 27/11/2023 Pixelation or flickering on some or all channels Digital tick

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-100,000W
Channel icons
1 BBC One (SD) Scotland, 2 BBC Two Scotland, 7 BBC Alba HD, 23 BBC Three, 24 BBC Four (Scotland SD), 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 13 others

 H max
C43 (650.0MHz)576mDTG-100,000W
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, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (STV Edinburgh), 35 STV+1 (STV Edinburgh),

 H max
C40 (626.0MHz)576mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD Scotland, 102 BBC Two HD Scotland, 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

 H max
C41+ (634.2MHz)576mDTG-8100,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 35 others

 H max
C44 (658.0MHz)576mDTG-8100,000W
Channel icons
 Smithsonian Channel, 11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's Christmas, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

 H max
C47 (682.0MHz)576mDTG-8100,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! christmas mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 235 Al Jazeera Eng, plus 20 others

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

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.

Thursday, 8 November 2018
5:39 PM

MikeP, thanks for your replies and for clearing up my misconception about interference when adjacent transmitters use the same frequencies. I had thought this was causing poor signal quality on COM7 and COM8 after the recent retunes.

A Freeview engineer said signal quality was fine but fitted a filter in the aerial lead to remove interference from 4g mobile transmitters. Seems fine now.

I'm still puzzled as to how moving COM7 and COM8 INTO the 700 MHz band is supposed to contribute to 700 Mhz CLEARANCE. Seems counterintuitive!

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Rupert's 3 posts US flag
Friday, 9 November 2018

11:38 AM


After 2022, or thereabouts, they will not exist at all so will not be in the 700MHz band. 5G is not expected to be generally available until at least 2022 so those multiplexes will not cause any problems as they will be removed in time for the 5G service.

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MikeP's 3,056 posts GB flag
8:50 PM

Thanks again, MikeP, but I still don't see how moving COM7 and COM8 from the 500 MHz band into the 700 MHz band is a good idea, even if they will cease to exist in four years time. Why move them at all? What was wrong with leaving them well alone? Still, I suppose it provides employment security for Freeview's engineers!

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Rupert's 3 posts US flag
Saturday, 10 November 2018

12:19 PM


The clearance of the 700 MHz band requires a large number of changes to the transmission scheme so that all the required transmissions could be fitted into the frequency spectrum remaining after the move out of the 700 MHz band. That all takes time so Arqiva started several months ago moving some channels to accommodate the reduction in spectrum available after 5G starts. To do that it was necessary to separate out some services into what are called Single Frequency Networks and that is why almost all of the COM7 and COM8 services are on channels 55 and 56 for now. Only 30 of the main transmitters carry those signals.

When it is deemed that most viewers have equipment that is capable of receiving and displaying the DVB-T2 transmission needed for HD services then there will be further work by Arqiva to bring the programme services that are currently on COM7 and COM8 onto the multiplexes that are below 700 MHz. That cannot be done as yet because too many viewers are unable to receive and display HD programmes due to limitations of their equipment (it is necessary to use equipment that is defined as Freeview HD and not 'HD ready' as that only means the screen can show HD but there is no HD decoder built in!). The DVB-T2 encoding is capable of carrying more data, so can be used to broadcast more channels within a multiplex than is possible with the current DVB-T encoding used for the SD multiplexes at present. That will mean fewer multiplexes will be needed and hence COM7 and COM8 will become redundant, so can be switched off to free up the 700 MHz band. So people can expect more changes over the coming three years or so and that's why most are recommending viewers use a wideband aerial that will be able to receive all the current and future transmissions. That aerial could be a conventional type based on the Yagi design of a log-periodic type, both types cover the whole of the allocated UHF frequency spectrum. That means there will not be any need to change the aerial in future.

Hope that clarifies a rather complex subject?

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MikeP's 3,056 posts GB flag
Monday, 12 November 2018

9:11 PM

Why is a wideband aerial recommended? If the top part of the band is to be used for 5G would you not then be left with an aerial that is designed to pick up unwanted signals? I would have thought an aerial optimised for the lower channels would be better (provided 55 and 56 are still tolerable).

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Scott's 110 posts GB flag
Tuesday, 13 November 2018

9:48 AM


The usage of channels 55 and 56 is purely temporary on 30 of the main transmitters until sometime in 2022, when the programmes using the COM7 and COM8 multiplexes will be moved to other locations. 5G will not gain access to the 700 MHz+ band until it has been cleared of all TV broadcasts in 2022. Until then many viewers need a wideband aerial to get those two multiplexes as most non-wideband aerials designed for Group A or Group B are very poor at receiving 'out of band' signals at higher frequencies. If you never want to watch any of the programmes broadcast on COM7 or COM8 then you probably don't need a wideband aerial.

After the changes expected in 2022 the requiremnet will change so you will need an aerial that covers the frequencies between 470 MHz and 695 MHz (channels 21 to 49). The current design of wideband aerials will work perfectly adequately over that range but newer designs may appear will a lower top end cutoff frequency - but they are not suitable for use with the current channel allocation scheme.

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MikeP's 3,056 posts GB flag
Monday, 10 December 2018
steven harper
3:36 PM

ariel on roof .. can you keep me with transmitter updates please

link to this comment
steven harper's 2 posts GB flag
steven's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage

4:07 PM

steven harper: The only changes to have taken place at Black Hill are that COM7 & COM8 have moved to UHF channels 55 & 56 and the local mux has moved to UHF channel 30. There are no further changes planned according to Digital UK.

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StevensOnln1's 3,566 posts GB flag
Saturday, 22 December 2018
Gary Gemmell
1:03 PM

Lost all channels on COM8
Forces tv will be sadly missed no Starsky and Hutch what am i going to do lol

link to this comment
Gary Gemmell's 2 posts GB flag
Gary's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Gary Gemmell
1:07 PM

Newton Mearns - Blackhill transmitter

All channels on COM8 gone since October
Also strangely at the same tme both my LG tv's show no aerial icon on the main menu
Presumably these tv's drop the icon when the power is not enough
Funny though when the aerial is plugged into the youview dn370 and 372t the signal strength on ch4 is 100% and quality around 82%
LG TV Issue perhaps?
Seen a lot of people mention it in the forums suspecting a damaged I/O board but it isnt its a single issue - happened around same time as i lost COM8.

Switching to my motorised satellite dish for freesat now - freeview is just too unreliable now!

link to this comment
Gary Gemmell's 2 posts GB flag
Gary's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
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