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Full Freeview on the Divis (Northern Ireland) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps54.607,-6.009 or 54°36'24"N 6°0'34"Wsa_postcodeBT17 0NG


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 15/04/2024 Screen may go black 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, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

 H -3dB
C26 (514.0MHz)528mDTG-850,000W
Channel icons
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 TV 2, 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
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 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.

Wednesday, 24 October 2012

9:53 PM

jerry: You need a Freeview box that supports MPEG4 to receive a picture on RTE. Either a BT vision box or a Freeview HD box would be suitable, otherwise a use Saorview box.

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KMJ,Derby's 1,811 posts GB flag

10:19 PM

Fergus Maunsell: Your TV appears to be listed as "HD ready" which means that it is ready to display a HD picture when fed via the HDMI connection with a suitable HD source, such as a Freeview HD box, HD satellite box or blu-ray player. You need a Freeview HD box (or receiver with in-built tuner which supports DVB-T2) to receive both the Freeview HD channels from Divis and the NIMM from Black Mountain.

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KMJ,Derby's 1,811 posts GB flag
John Reilly
10:23 PM

Hi. I live in the Republic and can get most of the Freeview channels. When I re-tuned this afternoon I had ITV3 ITV2+1 5USA and some others. However around 5 P.M. this evening the channels on Multiplex COM4/SDN disappeared. Does anyone know why this might have happened?

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John Reilly's 1 post IE flag
10:54 PM

hello everyone i have been getting a message the video format is no supported when i try to watch rte 1 but in the morning at about 6:30 of the 24oct12 i had no problem with it i can hear the sound but can see anything does anyone have the same problem am in dunmurry
please help me dont know what to do

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lezzie's 1 post GB flag

11:23 PM

After a day of retuning quite a number of TVs I noticed the following on EPGs

TVs with Freeview HD put the NIMM RTE from black mountain at 51 52 and 53.

Those with aerials for Claremont Cairn RTE, they appear between 800 to 807.

The four Northern Hd channels appear high up the channel list as well so do check your full EPG or channel guide.

From checking the Claremont Cairn signal today a mast amp is still required at least in the Antrim area.

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Carl's 51 posts GB flag
Fergus Maunsell
11:44 PM

KMJ,Derby: Thanks for answering my query.

Now have to get a Freeview HD Box.

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Fergus Maunsell's 6 posts GB flag
Fergus's: mapF's Freeview map terrainF's terrain plot wavesF's frequency data F's Freeview Detailed Coverage
Thursday, 25 October 2012
Fergus Maunsell
12:11 AM

Mini FASHION TRUE HD Digital DVB-T Terrestrial Receiver H.264 MPEG4 TV BOX(Black,DG-OT3901)

Mini FASHION TRUE HD Digital DVB-T Terrestrial Receiver H.264 MPEG4 TV BOX(Black,DG-OT3901) -

Would this hd box for Belfast (BT96TZ)

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Fergus Maunsell's 6 posts GB flag

12:18 AM

Fergus Maunsell: Only if you are able to receive Saorview, as it will not pick up any of the Freeview HD (DVB-T2) channels.

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Michael's 358 posts GB flag
Lorri Henry
12:23 AM

I have retuned Samsung EH5000 Series 5 Full HD LED TV and can get all the NI HD channels but not the RTE ones . My postcode is bt39 9he
Any thoughts?

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Lorri Henry's 2 posts GB flag
Neil Robertson
9:28 AM

Dave Lindsay
Thanks for your comments..
I can receive the multiplexes from both local relays here in Largs without a problem so
the exercise (more of a technical bit of fun really) was to see if I could receive
more channels by receiving the multiplexes which are not on my local relays directly from a main transmitter site. However yesterday after switch-over the signal levels on the SDN, ARQA and ARQB multiplexes from Divis are much, much lower(as I had feared due to the lower transmitter power ) than the BBC and D3+4 multiplexes so it's not really practical unless I use a huge high-gain antenna.
I have Freesat as well so can get them that way.

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Neil Robertson's 1 post GB flag
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