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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 04/12/2023 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.

Wednesday, 10 October 2012
1:02 AM

MEM: They gave BBC2 analogue a lovely send-off here in NI. Later with Jools suddenly stopped and it switched to a still caption about the DSO. Then it cut to a clip of the old 80's stripy BBC2 logo which unrolled as the announcer explained that analogue BBC2 was coming to an end after 48 and a half years then BANG out it went!

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Mark's 13 posts GB flag
Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Thursday, 11 October 2012
10:32 AM

when can i receive the rte channels on freesat and freeview i live in bt72bt

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mckeownsean's 1 post GB flag
Dave Lindsay

10:55 AM

mckeownsean: RT channels will not be available via Freesat.

The transmitter that is used in your area would appear to be Divis. It won't broadcast RT but instead it will be broadcast from the adjacent Black Mountain transmitter. There will be many places where a single aerial will be able to receive from both where they are roughly in line.

From your location Divis is at 288 degrees and Black Mountain is at 265 degrees.

In order to receive RT/TG4 channels from Black Mountain you will need a Freeview HD receiver. The broadcasts will be in standard definition but they use DVB-T2 transmission mode which is that used for Freeview HD services, whereas standard definition ones use DVB-T.

The main thing I can see, and it will depend on your exact location, is that the white building to the left of the Radisson could perhaps be in the way for Black Mountain, but as I say, this depends on whereabouts you live and whether it is in that direction.

Try it and see on 24th, if you have a HD receiver.

If it turns out that you can't get RT from Black Mountain using your existing aerial, then it may be possible to replace the aerial (to get reception from Black Mountain and Divis), or failing that, Carnmoney Hill is also broadcasting RT and Digital UK suggests that you might be able to receive that.

As ever, take what the predictor says with a pinch of salt. Local obstructions are not taken into account.

Reception of RT from Carnmoney Hill (if possible) would require a separate aerial and this (along with the Divis one) could be combined into one feed. Again, you will need a Freeview HD receiver to watch it.

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Dave Lindsay's 5,724 posts GB flag
Dave Lindsay

11:10 AM

mckeownsean: Or it "may" be possible to receive from Clermont Carn in Co. Louth. I have spotted an aerial which appears to be pointing at it near to you on 36 Upper Stanfield Street, so this may add weight to that as a possibility.

That said, it is important to emphasise that local buildings could scupper your chances and therefore what can and cannot be received from varies from property to property.

The only warning to give is that reception of Saorview signals from Clermont Carn will probably require a Freeview HD receiver. This is because of the different digital systems used in the UK and in the Republic of Ireland.

If you go down the route of receiving from Clermont Carn, then these questions might be of help:

Advice for people who receive UK overspill signal | SAORVIEW

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Dave Lindsay's 5,724 posts GB flag
Dave Lindsay

11:17 AM

mckeownsean: And finally, Clermont Carn will not go onto full transmission power until 24th, so don't do anything before then.

The NI Mux from Black Mountain and Carnmoney Hill will carry RT One, RT Two and TG4 only. See:

What is Saorview? | SAORVIEW

Clermont Carn will carry more channels:

What is Saorview? | SAORVIEW

As I say, your possibilities depend on what can be received at your location.

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Dave Lindsay's 5,724 posts GB flag
Dave Lindsay

11:18 AM

mckeownsean: Sorry, the first link about the NI Mux should be:


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Dave Lindsay's 5,724 posts GB flag
dermot walsh
9:25 PM

wat equement do i need to receive r t e i have a digital tv with free view channelswill i get it by retuening my free view box or do i need a free view soarview box or a cam and reader

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dermot walsh's 1 post GB flag
Dave Lindsay

9:35 PM

dermot walsh : You will need a Freeview HD receiver to pick up RT/TG4 as they broadcast using the DVB-T2 format even though they will be standard definition pictures.

See this leaflet:


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Dave Lindsay's 5,724 posts GB flag
10:31 PM

I'm happy to say that I'm receiving all the BBC digital channels as well as radio channels with a good strong signal in the Newry BT35 area. I have to say in comparison to the analogue picture the digital picture is a lot better and more vibrant.

Before I buy a HD set top box for RTE is there any way I can find out if I can receive a decent enough signal to my home?

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M E M's 12 posts GB flag
Dave Lindsay

10:53 PM

M E M: Put your post code in the Digital UK checker and tick the "Detailed view" box:

Digital UK - Postcode checker

This should be used as a guide. Local obstructions won't be taken into account.


Digital UK - Postcode checker

You may be able to receive Saorview from Clermont Carn for which you will probably need a Freeview HD receiver also.

Clermont Carn will give you Saorview channels:

What is Saorview? | SAORVIEW

Reception of the Freeview NI Mux from Black Mountain will give you RT One, RT Two and TG4 only.

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Dave Lindsay's 5,724 posts GB flag
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