Freeview: Divis (Northern Ireland) Full Freeview transmitter
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Full Freeview on the Divis (Northern Ireland) transmitter

Google StreetviewGoogle mapBing mapGoogle Earth54.607,-6.009 or 54°36'24"N 6°0'34"WBT17 0NG

4G at 800MHz (at800) Freeview reception issues

Tests now show that SOME households that use masthead amplifiers (and some communal aerial systems) AND are in poor signal areas AND that are very close to a 4G phone mast MAY have their Freeview service disturbed: C23: SDN, C21: D3+4
See Expecting 4G interference? Tests now show that you have a one in 300 chance.

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. Click to recheck

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The symbol shows the location of the Divis (Northern Ireland) transmitter which serves 440,000 homes.

Other maps:Divis DABDivis AM/FMDivis regionBBC Northern IrelandUTV

Is the transmitter output the same in all directions?

Radiation patterns withheld

What do the colours on the map mean?

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.


List by multiplex|List by channel number|List by channel name|See terrain plot

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.

MuxAerial positionFrequencyHeightModeWatts
PSB1
BBCA
 horizontal max
C27 (522.0MHz)551m64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2		100,000W
Channel icons
1 BBC One Northern Ireland, 2 BBC Two Northern Ireland, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 BBC Red Button 1, plus 14 others

PSB2
D3+4
 horizontal max
C21+ (474.2MHz)551m64QAM 8K 2/3
24.1Mb/s DVB-T MPEG2		100,000W
Channel icons
3 UTV (UTV), 4 Channel 4 NI ads, 5 Channel 5 NI ads, 6 ITV 2, 13 Channel 4+1 NI ads, 14 More 4, 28 E4, 33 UTV+1 (UTV), plus 1 others

PSB3
BBCB
 horizontal max
C24 (498.0MHz)551m256QAM 32KE 2/3
40.2Mb/s DVB-T2 MPEG4		100,000W
Channel icons
101 BBC One HD Northern Ireland, 102 BBC Two HD (England), 103 UTV HD (UTV), 104 Channel 4 HD NI ads, 303 BBC Red Button HD, plus 1 others

COM4
SDN
 horizontal -3dB
C23 (490.0MHz)551m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		50,000W
Channel icons
10 ITV 3, 20 G.O.L.D. (not free), 25 Dave ja vu, 26 Home (not free), 27 ITV 2 +1, 30 5*, 31 5USA, 34 ESPN UK (not free), 38 Quest, 39 The Zone, 44 Channel 5 +1, 72 CITV, plus 21 others

COM5
ArqA
 horizontal -3dB
C26 (514.0MHz)528m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		50,000W
Channel icons
11 PICK TV, 12 Dave, 17 Really, 29 E4+1, 32 Movie Mix, 46 Challenge, 48 Food Network, 82 Sky News, 87 Community Channel, 302 BBC Red Button 2, plus 9 others

COM6
ArqB
 horizontal -3dB
C29 (538.0MHz)528m64QAM 8K 3/4
27.1Mb/s DVB-T MPEG2		50,000W
Channel icons
15 Film 4, 18 4Music, 19 Yesterday, 21 VIVA, 24 ITV 4, 41 Sky Sports 1 (not free), 42 Sky Sports 2 (not free), 47 4seven, 83 Al Jazeera English, 85 RT English , plus 22 others



Which BBC and ITV regional news can I watch from the Divis transmitter?


BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast
to BBC Northern Ireland region - 46 masts.

UTV Live 0.6m homes 2.5%
from Belfast BT7 1EB, 1,044km northeast
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?

years1950s~851984-971997-981998-20122012-132013-182013-182019-
aerial groupVHFA KA KKA KA KA KA K
C1BBCtv
C21C4C4C4+D3+4+D3+4+D3+4BBCB
C22SDN
C23-ASDNSDNSDN
C24ITVITVITVBBCBBBCBBBCBD3+4
C25ArqA
C26-BArqAArqAArqA
C27BBC2BBC2BBC2BBCABBCABBCABBCA
C28ArqB
C291ArqBArqBArqB
C30local
600C31BBC1BBC1BBC1
C33-2com7
C34+Dcom8
C48C

orange background for multiplexes names moregreen background for transmission frequencieslilac background for power levels in watts800MHz band: 4G mobile to start in 2013700MHz band: possible 4G in 2019 more600MHz band: new or moved digital TV services more
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 10th October and 24th October 2012.

  • Ofcom have projected that a local television service for Belfast including Lisburn could use an Interleaved Frequency on the Divis transmitter using C30
  • COM7, COM8 projected for 2013-16.

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

Analogue 1-4 500kW
com7, com8, BBCA, D3+4, BBCB(-7dB) 100kW
SDN, ARQA, ARQB(-10dB) 50kW
Mux 1*, Mux 2*, Mux A*, Mux B*(-23.4dB) 2.3kW
Mux C*(-24dB) 2kW
Mux D*(-24.9dB) 1.6kW

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.


Your comments: most recent posts are at the bottom

firstFirst comments prevEarlier comments  ◊ 

Your comments are always welcome. Please use the form below to add your thoughts or questions to this page. We will get back to you as soon as we can.

D
Dave
Sunday 24 March 2013 12:09AM
None of the COM4 channels are working for me everything else is back to normal.
P
P. Kieran Ward
Sunday 24 March 2013 12:30AM Belfast
Hi all! Here is one way to get over 'No Signal' problems is the way my daughter used when Divis was off. We were watching Law and Order on Channel 5 and when Divis went down was to watch the remainder of the show via the internet. It looks like some of the muxs are still off air at 12.30am Sunday.
Transmitter engineering
Sunday 24 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 yesterday to 23:21 yesterday, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, HD Digital TV Off Air from 21:56 yest [BBC]
Transmitter engineering
Sunday 24 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 yesterday to 23:21 yesterday, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, HD Digital TV Off Air from 21:56 yest [BBC]
Transmitter engineering
Sunday 24 March 2013 4:31PM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 yesterday to 23:21 yesterday, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, HD Digital TV Off Air from 21:56 yest [BBC]
Transmitter engineering
Sunday 24 March 2013 4:31PM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 yesterday to 23:21 yesterday, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, HD Digital TV Off Air from 21:56 yest [BBC]
P
Peter Henderson
Sunday 24 March 2013 5:07PM
Another good reason to have Freesat as a back up, even if you have good terrestrial reception.

I well remember the major fault at Divis in the late 70's (or was it the early 80's ?) when we had no TV for almost a week. The transmitter was subsequently on low power4 for several months afterwards.

Satellite or cable didn't exist in those days, so it was all very frustrating!
Transmitter engineering
Monday 25 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, HD Digital TV Off Air from 21:56 on 2 [BBC]
Transmitter engineering
Monday 25 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, HD Digital TV Off Air from 21:56 on 2 [BBC]
Transmitter engineering
Monday 25 March 2013 7:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, HD Digital TV Off Air from 21:56 on 2 [BBC]
Transmitter engineering
Monday 25 March 2013 7:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, HD Digital TV Off Air from 21:56 on 2 [BBC]
Transmitter engineering
Tuesday 26 March 2013 10:32AM
DIVIS transmitter - Freeview: BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, HD Digital TV Reduced Quality from 02 [BBC]
Transmitter engineering
Tuesday 26 March 2013 10:32AM
DIVIS transmitter - Freeview: BBC Digital TV Reduced Quality from 02:30 on 22 Mar to 03:59 on 22 Mar, BBC Digital TV Reduced Quality from 00:51 on 22 Mar to 01:13 on 22 Mar, BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, HD Digital TV Reduced Quality from 02 [BBC]
Transmitter engineering
Wednesday 27 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, HD Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar. DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on [BBC]
Transmitter engineering
Wednesday 27 March 2013 4:32AM
DIVIS transmitter - Freeview: BBC Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar, HD Digital TV Off Air from 21:56 on 23 Mar to 23:21 on 23 Mar. DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on [BBC]
Transmitter engineering
Thursday 28 March 2013 10:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on 22 Mar to 12:00 on 25 Mar, Radio 1 FM Weak Signal from 19:59 yesterday to 22:07 yesterday, Radio 2 FM Weak Signal from 19:30 on 22 Mar to [BBC]
Transmitter engineering
Thursday 28 March 2013 10:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on 22 Mar to 12:00 on 25 Mar, Radio 1 FM Weak Signal from 19:59 yesterday to 22:07 yesterday, Radio 2 FM Weak Signal from 19:30 on 22 Mar to [BBC]
Transmitter engineering
Friday 29 March 2013 4:32AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on 22 Mar to 12:00 on 25 Mar, Radio 1 FM Weak Signal from 19:59 on 27 Mar to 22:07 on 27 Mar, Radio 2 FM Weak Signal from 19:30 on 22 Mar to [BBC]
Transmitter engineering
Friday 29 March 2013 4:32AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 19:30 on 22 Mar to 12:16 on 25 Mar. FM: Radio 1 FM Weak Signal from 19:30 on 22 Mar to 12:00 on 25 Mar, Radio 1 FM Weak Signal from 19:59 on 27 Mar to 22:07 on 27 Mar, Radio 2 FM Weak Signal from 19:30 on 22 Mar to [BBC]
P
P. Kieran Ward
Friday 29 March 2013 11:53PM
Has anyone heard what is causing the problem with the Divis Transmitter?
M
Michael
Saturday 30 March 2013 12:30AM
P. Kieran Ward: What problem?
P
P. Kieran Ward
Sunday 31 March 2013 12:32AM
Michael

If you read the previous posts re: Transmitter engineering on Divis. It would appear that it is now effecting radio transmissions while earlier it was some TV. I was just wondering if it was due to additional engineering for changes later this year - i.e. Northern Visions etc.

Regards

Kieran
P
Peter Henderson
Tuesday 2 April 2013 2:25AM
The DAB problem could be due to the fact that Digital One will be broadcasting from Divis in a few months time.

I think FM transmissions are still from the old mast.
G
Gary
Tuesday 30 April 2013 11:24PM Donaghadee
Whats happening, lost signal to film4, did a suggested re-tune, now instead of 144 channels i have only 66.
is there transmitter maintenance going on, this has been playing for the past week or so? has this something to do with 4G masts problem from 2013 - 2017, thats along time to have to put up with poor signals.
roof top vertical mast.
oh further a further re-tune have given me 103 channels, oh another re-tune has given me 144 channels again.
i thought the digital switchover was to sort out these old issues.
W
wayne cochrane
Thursday 2 May 2013 11:05AM
Donaghadee seems to be in a good reception area for the Divis main transmitter, but could be prone to interference from Caldbeck in NW England.

I don't think they've done any 800 MHz 4G tests in NI yet.

Might be no harm to get your aerial system checked out.
Transmitter engineering
Monday 20 May 2013 10:31AM
DIVIS transmitter - Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Monday 20 May 2013 10:31AM
DIVIS transmitter - Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Wednesday 29 May 2013 1:32PM
DIVIS transmitter - DAB: BBC National DAB Radio Weak Signal from 11:54 today. FM: Radio 1 FM Weak Signal from 11:54 today, Radio 2 FM Weak Signal from 11:54 today, Radio 3 FM Sound in Mono from 11:54 today, Radio 4 FM Weak Signal from 11:54 today, Radio Ulster FM Weak Signal [BBC] Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Wednesday 29 May 2013 4:31PM
DIVIS transmitter - DAB: BBC National DAB Radio Weak Signal from 11:54 today to 14:15 today. FM: Radio 1 FM Weak Signal from 11:54 today to 14:20 today, Radio 2 FM Weak Signal from 11:54 today to 14:20 today, Radio 3 FM Sound in Mono from 11:54 today to 14:20 today, Radio 4 [BBC] Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Thursday 30 May 2013 4:32AM
DIVIS transmitter - DAB: BBC National DAB Radio Weak Signal from 11:54 yesterday to 14:15 yesterday. FM: Radio 1 FM Weak Signal from 11:54 yesterday to 14:20 yesterday, Radio 2 FM Weak Signal from 11:54 yesterday to 14:20 yesterday, Radio 3 FM Sound in Mono from 11:54 yester [BBC] Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Friday 31 May 2013 4:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Weak Signal from 11:54 on 29 May to 14:15 on 29 May. FM: Radio 1 FM Weak Signal from 11:54 on 29 May to 14:20 on 29 May, Radio 2 FM Weak Signal from 11:54 on 29 May to 14:20 on 29 May, Radio 3 FM Sound in Mono from 11:54 on 29 [BBC] Over the next week Divis main transmitter: no analogue TV, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Wednesday 12 June 2013 10:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 10:02 today. FM: Radio 1 FM Weak Signal from 10:05 today, Radio 2 FM Weak Signal from 10:05 today, Radio 3 FM Weak Signal from 10:05 today, Radio 4 FM Weak Signal from 10:05 today. [BBC]
Transmitter engineering
Wednesday 12 June 2013 1:31PM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 12:17 today to 12:42 today. FM: Radio 1 FM Weak Signal from 10:05 today to 11:05 today, Radio 2 FM Weak Signal from 10:05 today to 11:05 today, Radio 3 FM Weak Signal from 10:05 today to 11:05 today, Radio 4 FM Wea [BBC]
Transmitter engineering
Thursday 13 June 2013 4:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 12:17 yesterday to 12:42 yesterday. FM: Radio 1 FM Weak Signal from 10:05 yesterday to 11:05 yesterday, Radio 2 FM Weak Signal from 10:05 yesterday to 11:05 yesterday, Radio 3 FM Weak Signal from 10:05 yesterday to [BBC]
Transmitter engineering
Friday 14 June 2013 4:31AM
DIVIS transmitter - DAB: BBC National DAB Radio Off Air from 12:17 on 12 Jun to 12:42 on 12 Jun. FM: Radio 1 FM Weak Signal from 10:05 on 12 Jun to 11:05 on 12 Jun, Radio 2 FM Weak Signal from 10:05 on 12 Jun to 11:05 on 12 Jun, Radio 3 FM Weak Signal from 10:05 on 12 Jun to [BBC]
Arun
Monday 17 June 2013 12:27PM Stoke-on-trent
Hi Brian,
I see that there has been some transmitter engineering on the Divis transmitter on the 12th of June.
Some of my equipment recorded a momentary loss of signal on one of the multiplexes (COM6), at approximately 11:00 AM on the 12th June.
Would it be possible that the transmission was interrupted due to the engineering works ?
Thanks,
Arun
Briantist
Monday 17 June 2013 1:14PM
Arun: It's possible. The BBC "R+T Investigation" system doesn't report the COM multiplexes, so you have to (as they told me) "infer" what is happening to them.

It looks like the event was a mains power failure, to which systems probably have a certain amount of backup.

So... basically "yes".
Arun
Monday 17 June 2013 1:38PM Stoke-on-trent
Thanks Brian, for the information.
Explains why it was just a momentary loss, and not a loss for an extended time or a low signal condition.
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