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 04/12/2023 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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Sunday, 3 December 2023
C
Chris.SE8:32 PM
Gemma:
Hi Gemma. It could be the Planned Engineering especially if ArqA is on reduced power or the Reserve Antenna, BUT, you mention the last few weeks when the transmitter wasn't listed in the middle 2 weeks of November. However that doesn't necessarily mean that work wasn't going on, we know the lists can sometimes be inaccurate. Unfortunately Arqiva never specify how long the work will take or what it entails!
You mention that the channels are ok on the TV in the next room, which suggests the signal may be a bit marginal and maybe it's a longer cable run for the affected TV?
Does the splitter you use to feed the two TVs have an amp, or is it just passive?
I'd check that your aerial is still pointing OK, it should be compass bearing 263 degrees, that's 6 degrees S of due W, with its rods (or squashed Xs) horizontal. Check the downlead isn't flapping in the wind. How old is the installation?
Check all your accessible coax connections for corrosion or water.
You should have had a postcode from RestoreTV about possible interference from mobile signals.
Put your postcard in here https://restoretv.uk/post…ure/ to check.
if you haven't got a free Filter, contact them to get one. It should be fiited before the amp/splitter.
If you happen to have a masthead amp tell RestoreTV as they'd need to send an engineer (free) to intall an external filter & possibly change the aerial.
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C
Chris.SE8:36 PM
Gemma:
Typo, I meant -
Put your postcode in here https://restoretv.uk/post…ure/ to check.
Not postcard in there :D
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Monday, 4 December 2023
Transmitter engineering
5:11 AM
5:11 AM
Divis transmitter - Divis transmitter: Possible effect on TV reception week commencing 04/12/2023 Pixelation or flickering on some or all channels [DUK]
| link to this comment |
Transmitter engineering
5:11 AM
5:11 AM
Divis transmitter - Divis transmitter: Possible effect on TV reception week commencing 04/12/2023 Pixelation or flickering on some or all channels [DUK]
| link to this comment |
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