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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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Divis (Northern Ireland) transmitter.

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-3100,000W
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, 250 BBC Red Button, plus 13 others

 H max
C21+ (474.2MHz)551mDTG-3100,000W
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, 30 E4 +1, 35 UTV +1 (UTV),

 H max
C24 (498.0MHz)551mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD Northern Ireland, 102 BBC Two HD (England), 103 UTV HD (UTV), 104 Channel 4 HD NI ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 H -3dB
C23 (490.0MHz)551mDTG-850,000W
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 Player, 211 Ketchup TV, 212 YAAAS!, plus 15 others

 H -3dB
C26 (514.0MHz)528mDTG-850,000W
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

 H -3dB
C30 (546.0MHz)528mDTG-850,000W
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, 91 Classic Hits, 235 Aljazeera English, plus 18 others

 H -13dB
C30 (546.0MHz)528mDTG-125,000W
Channel icons
from 29th September 2014: 7 NvTv,

 H -9.1dB
C55 (746.0MHz)551mDTG-612,400W
Channel icons

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

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 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.

Thursday, 25 October 2012
Dave Lindsay

3:59 PM

john boyd: Some devices have an in-built "booster" and this should probably be set to off.

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Dave Lindsay's 5,724 posts GB
5:33 PM

I bought my Freeview HD box a number of months ago in anticipation that I would receieve RTE channels in Belfast - BT12 6EG, however I have been very disappointed as I am unable to receive any RTE channels. I have restored factory settings, reinstalled and updated channel lists on my i-Can Easy HD 2851T Freeview HD Set Top Box. I have also noticed that when I rescanned some channels appeared on the search list but did not appear on the TV menu. Any thoughts would be greatly appreciated.

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Sinead's 5 posts GB
Dave Lindsay

5:59 PM

Sinead: To tune in the RT/TG4 channels, go to the manual tuning function. If there is an option to select the mode, ensure that it is set to DVB-T2 rather than DVB-T. Then select UHF channel 39. Don't press the button to scan/add channels just yet; if it gives an indication as to strength/quality on that channel note what it is.

The signal that carries RT/TG4 is broadcast from Black Mountain whereas the other Freeview channels come from Divis. Because the two are close together, for many people this is OK because they are in roughly the same direction and hence one aerial will work for both.

Because you are so close the two transmitters are 41 degrees apart. This could perhaps pose an issue. If so, then maybe turning the aerial slightly anti-clockwise (towards Black Mountain) might help.

Failing that, you may be able to receive NI Mux with a second aerial on Black Mountain or Carnmoney Hill. Or, having looked at Streetview, some of your neighbours have aerials on Clermont Carn in the Republic. These will provide all Saorview channels which your Freeview HD box will work with:

What is Saorview? | SAORVIEW

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Dave Lindsay's 5,724 posts GB
Lorri Henry
6:55 PM

Thank you Dave

Tried that but it didn't pick up CH 39
Think it might be a similar situation to Sinead's

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Lorri Henry's 2 posts GB
Dave Lindsay

7:12 PM

Lorri Henry: They are almost inline from your location which wouldn't be expected to cause a problem.

The only observation I will make, and I'm not at all sure that this will act to your detriment, is that the Larne transmitter also uses C39, albeit that it is vertically polarised, whereas Divis/Black Mountain is horizontally so. You may be able to adjust or replace your aerial or you may be able to receive the NI Mux using a second aerial pointing to Carnmoney Hill which might be available at your location.

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Dave Lindsay's 5,724 posts GB
8:53 PM


Can somebody help? I cannot pick up all freeview channels. Channels SDN, ArqA, ArqB are missing. It looks that here is very high signal (BT13 3WG) and/or interference from wires of high voltage(?) which are only few meters from house. (54.6054,-5.9849) 

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Peter's 7 posts GB
Kevin Coyle
9:23 PM

I have a Freeview HD TV that has picked up all the RTE channels including RTE 2 HD on CH 52. Unfortunately the signal strength looks about 8% whereas the quality is about 85% or more. The picture breaks up a lot. Is there anything I can go to get strength up. I have a seperate RTE aerial from 15yrs ago installed on roof. I can see no way to het the NIMM transmissions. My postcode is BT8 8RU near Carryduff.


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Kevin Coyle's 2 posts GB

9:46 PM


I came across an I Can box whilst retuning on wedensday. I was asked to look at it as it did not pick up RTE.

I tried to tune it for the person who bought it but it would not even let me into the menu.

I think they may need a software update.

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Carl's 51 posts GB

10:03 PM

Kevin have you got a mast amplifier for the RTE aerial? General rule I have found if you were getting a good analogue signal from the South before DSO all should be ok if it was fuzzy then not so good.

Another route you could go would be saorsat which would mean a dish and freesat HD box this would get you all Irish channels apart from TV3.

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Carl's 51 posts GB
10:57 PM

Thanks Dave, I selected manual scan it only appears as RF channel 39 not UHF channel 39, no strength or quality appeared. The box is set to DVB-T2 mode. I will try and get the aerial adjusted and let you know how I get on.

Thanks Carl, I updated the software last night on the I Can box it is Version 020711. It is really annoying as I expected a rush for the boxes and thought I was well prepared buying in advance.

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Sinead's 5 posts GB
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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