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 29/05/2023 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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Saturday, 10 November 2012
C
Carl8:25 PM
Mem
DAB is and has been a disaster from the start as far as I'm aware it has been put on hold until the powers that be can work out what they will do with it.
I would stick to radio through tv at the moment.
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Sunday, 11 November 2012
M
MEM1:32 AM
Well I found out that Clermont Carn is broadcasting DAB at only 5kw. I believe the TV signal is broadcast at 160kw.
Don't think I would have any chance of getting a DAB signal at that level no matter what aerial I use.
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K
KMJ,Derby7:20 PM
MEM: Try entering 12C manually then move the radio around until a signal is showing then select store. You are not too far away from Clermont Carn, but it does depend on what hills are blocking the signal path. As you say, a more powerful transmitter would help too but DAB generally is somewhat underpowered if it is to match reception on FM. Are you able to receive the FM services from Clermont Carn OK?
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Monday, 12 November 2012
F
Felix valentine7:02 PM
Downpatrick
Hi can I receive rte with my aerial in the loft and pointing towards divis
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Felix valentine: Probably. You will need a Freeview HD reciever; RT/TG4 are in standard definition. They are broadcast from Black Mountain rather than Divis but it is only four degrees anti-clockwise from Divis, so, assuming no issues such as an obstruction, then the single aerial should be expected to work for both.
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Tuesday, 13 November 2012
W
William Hawe6:31 PM
Belfast
Since the most recent NI switchover I have been experiencing problems with the digital teletext service (picture is fine). All BBC channels have an intermittent text service, i.e. page returns to TV picture or 'Technical difficulties..' message displayed. The Channel 4 text service is not intermittent but the page content has not been updated since 27th October. My aerial is situated on an external wall & our local transmitter is Divis. Can anyone confirm that the digital teletext service is functioning correctly from the Divis transmitter, alternatively any assistance in resolving the matter would be much appreciated, thanks in advance.
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Wednesday, 14 November 2012
G
gerry flanagan8:23 PM
wats the best[ freeview ] transmitter to go for in virginia in cavan
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gerry flanagan: Any you can get!
Basically it will be down to Divis or Brougher Mountain. Both use only Group A channels. Brougher's COMs are on very low power and co-channel with Divis' PSBs, so they are not at all likely.
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G
gerry flanagan8:44 PM
hi my name is[ gerry flanagan ]from dublin iam A tv satellite rigger instaler one of them guys that used to pot up 100 feet mast tv aerials just to get bbc. i have job to du in hotel in virginia co cavan wat transmitter will i goe for [freeview]also just dun job on the north road the ward finglas nth co dublin app 7 miles from dublin city and got all freeview channels from divis groop A uased high gain triax wide band 32W MAST HEAD AMP .I WAS IN SHOCH NEVER TAUGHT FREEVIEW WOOD GET DOWN SO NEAR DYBLIN HAPPYDAYS
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gerry flanagan: Wideband aerials have less gain on Group A channels. See:
Rowridge Transmitter
For that reason, there is no such thing as a High Gain wideband aerial for the A group frequencies, of which Divis uses exclusively. For that reason, the better bet, where a high-gain aerial is required, is to use a Group A high-gain aerial.
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