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Full Freeview on the Divis (Northern Ireland) transmitter

first published this on - UK Free TV
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The symbol shows the location of the Divis (Northern Ireland) transmitter which serves 440,000 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 Divis (Northern Ireland) mast?

Divis transmitter - Divis 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 Divis 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
C27 (522.0MHz)551mDTG-100,000W
Channel icons
1 BBC One (SD) Northern Ireland, 2 BBC Two Northern Ireland, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 14 others

 H max
C21+ (474.2MHz)551mDTG-100,000W
Channel icons
3 UTV (SD) (UTV), 4 Channel 4 (SD) NI ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 NI ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 UTV +1 (UTV),

 H max
C24 (498.0MHz)551mDTG-100,000W
Channel icons
46 5SELECT, 101 BBC One HD Northern Ireland, 102 BBC Two HD Northern Ireland, 103 UTV HD (UTV), 104 Channel 4 HD NI ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H -3dB
C23 (490.0MHz)551mDTG-850,000W
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 -3dB
C26 (514.0MHz)528mDTG-850,000W
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 -3dB
C30 (546.0MHz)528mDTG-850,000W
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
C36 (594.0MHz)528mDTG-125,000W
Channel icons
from 29th September 2014: 7 NvTv,

 H -40dB
C48 (690.0MHz)551mDTG-10W
Channel icons
from 4th September 2019: 53 TG4, 54 RTÉ One, 55 RTÉ Two,

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 Divis transmitter?

regional news image
BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast (51°)
to BBC Northern Ireland region - 46 masts.
regional news image
UTV Live 0.6m homes 2.5%
from Belfast BT7 1EB, 1,044km northeast (51°)
to UTV region - 46 masts.

Are there any self-help relays?

Chapel FieldsTransposerCentral Belfast61 homes

How will the Divis (Northern Ireland) transmission frequencies change over time?

1950s-80s1984-971997-981998-20122012-134 Mar 2020

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 10 Oct 12 and 24 Oct 12.

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

Analogue 1-4 500kW
BBCA, D3+4, BBCB(-7dB) 100kW
SDN, ARQA, ARQB(-10dB) 50kW
com8(-16dB) 12.7kW
com7(-16.1dB) 12.4kW
LBT(-20dB) 5kW
Mux 1*, Mux 2*, Mux A*, Mux B*(-23.4dB) 2.3kW
Mux C*(-24dB) 2kW
Mux D*(-24.9dB) 1.6kW
NIMM(-47dB) 10W

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

Oct 1959-May 2006Ulster Television
May 2006-Dec 2014UTV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Divis 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.

Saturday, 24 December 2011
Transmitter engineering

8:30 PM

DIVIS transmitter - Analogue Ceefax BBC1 Off Air from 17:00 today to 17:40 today Ceefax BBC2 Off Air from 17:00 today to 17:40 today [BBC]

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Transmitter engineering's 146,506 posts xx flag
Transmitter engineering

8:30 PM

DIVIS transmitter - Analogue Ceefax BBC1 Off Air from 17:00 today to 17:40 today Ceefax BBC2 Off Air from 17:00 today to 17:40 today [BBC]

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Transmitter engineering's 146,506 posts xx flag
Friday, 30 December 2011
10:26 AM

Hi have been having trouble with my freeview through my tv. past few days was able to retune and got bbc channels, but they were unwatchable, now when i do a scan no channels are being found and says to check antenna connection. Annalogue channels are working ok.Ballymena area, any ideas?

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Richard's 3 posts GB flag
Dave Lindsay

12:00 PM

Richard: In situations such as this, retuning is likely to cause more problems and doesn't solve anything. Unless it is known that the TV is tuned to the wrong frequency, then the tuning is OK.

I think that it's likely that the level of the signals to the TV have dropped, maybe due to atmospheric conditions (for example). Now you aren't going to know when they are back because your TV isn't tuned.

I suggest that you attempt to manually tune in any missing channels. Having got some tuned, then don't do another auto-tune scan because it will wipe them. Once you have some, you need to keep manually tuning to the channels (frequencies) of the missing ones.

For manual tuning, the channels used by Divis are:

Mux 1 - BBC One, BBC Two etc - Ch29
Mux 2 - UTV, C4 etc - Ch33
Mux A - ITV3, QVC etc - Ch23
Mux B - BBC Four, BBC Parliament etc - Ch26
Mux C - Pick TV, Dave etc - Ch48
Mux D - Yesterday, Film4 etc - Ch34

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Dave Lindsay's 5,724 posts GB flag
1:01 PM

Thanks Dave, My father was in an electrical store in town and was told thesignal from Divis had been reduced or something.

I guess when it increase's again and if i do an auto scan they will appear. In mean time i will try manual scan


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richard's 3 posts GB flag
1:04 PM

Manual scan not working either, is saying signal quality none and level flicks from bar being nothing to ust on.

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richard's 3 posts GB flag
Peter Henderson
8:25 PM

We may have to put up with this kind of thing until DSO Richard.

Roll on next October !

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Peter Henderson's 3 posts GB flag
Peter Henderson
8:26 PM

P.S. Might be a good idea to check all connections.

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Peter Henderson's 3 posts GB flag
Monday, 16 January 2012
M E Moore
7:18 PM

I've being trying to get an answer to this question from other places to no avail so I'm hoping someone can answer it here.

With London switching to digital in April 2012 and N Ireland not converting until October 2012, will N Ireland analogue viewers still be able to receive live broadcasts from London based TV studios and stadiums etc?

Presumably they will be transmitting fully digital signals so I'm wondering is there any implications regarding events like the Olympics etc.


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M E Moore's 12 posts GB flag
Dave Lindsay

7:30 PM

M E Moore: The transmitters serving the London area will be switched to digital in April. That has nothing to do with Northern Ireland, even when the programming comes from London.

You haven't stumbled on some big secret to stop those in Northern Ireland from watching the Olympics!

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Dave Lindsay's 5,724 posts GB flag
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