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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Thursday, 24 September 2020
J
john cunningham3:52 AM
Will camlough mountain transmitter ever broadcast bbc4 in HD as I am unable to pick it up from divis
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C
Chris.SE4:10 AM
john cunningham:
The short answer is no. Until such time as the current SD multiplexes are converted to T2 (HD) transmission - not likely in the foreseeable future due to the economic climate - then there is no space available. On 25 main UK transmitters it is currently broadcast on COM7 which is a temporary multiplex which is due to close by June 2022 at the latest. We live in hopes (some say cloud cuckoo land) that Arqiva might start by converting one of it's other COM multiplexes to T2, but this would no doubt take place progressively on the 80+ main transmitters that currently broadcast COM multiplexes. Freeview Light transmitters which only broadcast the 3 PSB multiplexes are likely to be last to be done and would probably require some government funding.
To put the whole thing into context for you, there are over 1100 TV transmitters in the UK!
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Saturday, 10 October 2020
O
OWEN MC3:14 AM
Why is Divis not transmitting channel 50? It's listed on some sites as available but it is clearly not.
Is there any way of accessing this channel from another transmitter?
I live in the North Armagh area.
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S
StevensOnln111:26 AM
OWEN MC: Sony Movies Classic is on the Local TV multiplex, which is broadcast from both Divis (at low power) and the nearby Black Mountain transmitter, however the signal is targeted at Belfast and you are likely too far away to receive it. I don't believe there are any other transmitters carrying a Local TV multiplex in Northern Ireland.
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Monday, 26 October 2020
J
Jonny12:53 AM
I am in Lisburn but am unable to receive channel 50 which is now the Sony Christmas channel. Is there any way to get this channel?
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S
StevensOnln110:40 AM
Jonny: Sony Christmas Channel is carried on the local TV multiplex, which is only available in areas where there is a local TV station on Freeview channel 7 or 8. In Northern Ireland this is only available to viewers in the Belfast area who are able to receive either the Black Mountain or Divis transmitters.
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Thursday, 5 November 2020
I was receiving com 7 in Mallusk from Divis but today none of the com 7 channels are working?
Is the transmitter using lower power?
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C
Chris.SE3:11 PM
ROBERT MCDONNELLL:
I can't find any reports of Transmitter issues, and it's not currently listed for Planned Engineering.
It depends where you are, a full postcode would be needed to look at the predicted reception. Not all your area is well covered due to the terrain. If your COM7 signal is marginal then reception at present is not going to be helped by some predicted "Tropospheric Ducting" around with the current high pressure which may result in interference from distant transmitters in Europe or the UK. This can affect some (not always all) of the multiplexes at varying times! (see Effect of tropospheric ducting on Freeview | RTIS for a simplistic explanation).
If your set does automatic retuning, it's possible that if it lost signal (eg.due to interference) and retuned when there was no decodable signal it may well have just cleared the correct tuning.
I always recommend turning off any automatic retuning to avoid such problems and only retuning when there's been a change to channels that require it (these days that should only happen if broadcasters alter their programme channels and services provided as 700MHz clearance has been completed).
Try a manual tune for COM7 C55. You might have to try several times if interference is still present.
Have a look in your TV tuning section for the Signal Strength and Quality. High signal and low quality are frequently a sign of interference.
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Thursday, 4 February 2021
J
JONNY MCCULLOUGH10:45 AM
Craigavon
Hi All,
Hoping someone can help. Has anything changed within the the last 2 - 3 weeks with Divis? I'm having problems with BBC SD channels pixlating and I've lost COM 7 for quite a while, tried a few re tunes/ resets. No changes with the aerial (roofspace). postcode BT667NR.
Thanks,
Jonny
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JONNY's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
C
Chris.SE4:28 PM
JONNY MCCULLOUGH:
Nothing listed that I can find, no Planned Engineering or Live issues according to Freeview and no faults reported by the BBC recently.
See the post before yours for some general advice, not that there's been any "tropo" very recently.
I don't suppose you've got inadvertently tuned to Brougher Mountain instead of Divis for the BBCA/PSB1 (SD) multiplex? Brougher Mountain is on UHF channel C29 whereas Divis is on C27.
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