Full Freeview on the Divis (Northern Ireland) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 54.607,-6.009 or 54°36'24"N 6°0'34"W |  | BT17 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 11/11/2024 Pixelation or flickering on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
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 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.
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?
BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast (51°)
to BBC Northern Ireland region - 46 masts.
Are there any self-help relays?
| Chapel Fields | Transposer | Central Belfast | 61 homes |
How will the Divis (Northern Ireland) transmission frequencies change over time?
| 1950s-80s | 1984-97 | 1997-98 | 1998-2012 | 2012-13 | 4 Mar 2020 | ||||
| VHF | A K T | A K T | A K T | K T | W T | ||||
| C1 | BBCtvwaves | ||||||||
| C21 | C4waves | C4waves | C4waves | +D3+4 | D3+4 | ||||
| C23 | SDN | SDN | |||||||
| C24 | ITVwaves | ITVwaves | ITVwaves | BBCB | BBCB | ||||
| C26 | ArqA | ArqA | |||||||
| C27 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
| C29 | ArqB | ||||||||
| C30 | LBT | ||||||||
| C31 | BBC1waves | BBC1waves | BBC1waves | ||||||
| C33 | com7 | ||||||||
| C34 | com8 | ||||||||
| C36 | _local | ||||||||
| C48 | NIMM | NIMM | |||||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | COM8tv_off |
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
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Wednesday, 30 May 2012
Mark: Please see Northern Ireland "mini multiplex" (NIMM) | ukfree.tv - independent free digital TV advice for the full details.
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Thursday, 31 May 2012
C
Carl11:24 AM
Belfast
Divis digital muxes all disappeared this morning. Tested with spectrum anayliser all gone for a period and have now returned on very low signal strength.
i take it there is a TX fault??
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Carl's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
B
Bernard Moffatt11:58 AM
Getting:
23 Level 57% Qualtity 90%
26 Level 56% Qualtity 92%
29 Level 58% Qualtity 93%
33 Level 62% Qualtity 90%
34 Level 44% Qualtity 39%
23 Level 46% Qualtity 61%
West coast Isle of Man 11:50am
Cheers
(SC2665083186)
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B
Bernard Moffatt11:59 AM
Sorry last channel reading is for Ch 48 of course! (SC2665083186)
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C
Carl4:57 PM
Belfast
Were they always that level with you Bernard? This happened at about 10:10 today
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Carl's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
B
Bernard Moffatt7:36 PM
Levels I listed for this morning are about as good as it gets here - prior to ASO -obviously I would expect a major lift then.
Only the mux on 34 can be problematic in some weather and when that is the case 23 also drops.
Ch. 26,29,33 and 48 are always fairly constant. As backup I get the HD mux from the local transmitter here (Beary - Ch 50)I do not have an aerial set to that its just strong enough to come in 'on the side' of my aerial system - my other aerial is set to C Carn to get the analogue signals from RTE etc - and pulls in a good signal although no digital as yet.
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P
Peter Henderson10:30 PM
I've noticed nothing happening at this location (Jordanstown) and all multiplexes are as normal.
Strangely, the strongest is 34 (Film 4, ITV 4 etc.) which is always end stopping. Weakest is 23 which is more prone to break up than the rest. 48 is also stronger than the BBC multiplexes and 33 (UTV etc.)
During the high power tests in Janury signals on all multiplexes were 100%, so 24th October should be worth waiting for.
It may well be that a lot of people who use relay transmitters could in fact get an adequate signal from Divis once the power increases.
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Tuesday, 5 June 2012
B
Brian10:56 PM
Bangor
Anyone else having problems with C34 ITV4 Film4 etc in the Bangor area, weak signal, seemed to start around 1st June 2012
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Brian's: mapB's Freeview map terrainB's terrain plot wavesB's frequency data B's Freeview Detailed Coverage
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