Full Freeview on the Divis (Northern Ireland) transmitter
Brian Butterworth first published this on - UK Free TV
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.
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._______
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, 14 December 2011
M
Mike Dimmick4:19 PM
Peter Henderson: It's simply spam. Ignore it, or tell Briantist about it.
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Peter Henderson7:38 PM
Thought it might be Mike.
I see Brian's removed it already.
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Thursday, 15 December 2011
J
JackMcKnight11:34 AM
Peter Henderson. Thanks very much for taking the time and trouble to answer my questions on Freeview acquisition for my sister who lives on the Carnmoney Road Near to the library. I could only spot one Digital aerial locally and this appears to point at Divis/Cave Hill direction and is horizontally polarised.Currently my sister has an older aerial pointing to(I think-Carnmoney). Analogue reception on this aerial is very good, so maybe it'll be better to point a wideband one in this direction?? Would this be vertical or horizontal polarity please? Thanks again for all your help- I really appreciate it.P.S. I trust that Mike Dimmock's reference to "SPAM" is not directed at me.
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Peter Henderson2:54 PM
Was on the Antrim Road area of Glengormly about half an hour ago Jack and it looks like all the aerials are pointing towards Carnmoney Hill, even on the older houses, so it looks like Freesat if she doesn't want to pay for extra channels from Sky or Virgin etc.
After DSO Divis will only require a group A antenna, but I'd be inclined to run with Freesat and Carnmeny Hill (which will also carry 3, or maybe 4 RTE stations). Might be simpler in the long run.
With the addition of 5* and 5 USA, along with Channel 5+1, Freesat is virtually as good (if not better) than Freeview these days anyway. and a far better option than Feeeview Lite.
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Peter Henderson2:55 PM
P.S. Carnmoney Hill will require a group B bgoth pre and post DSO.
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Friday, 16 December 2011
J
JackMcKnight11:37 AM
Newtownabbey
Peter Henderson. Thanks so much for your help and advice on Freeview/Freesat. I really appreciate your taking the time and trouble. Kind Regards, Jack McKnight.
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JackMcKnight's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Friday, 30 December 2011
R
Richard10:26 AM
Hi have been having trouble with my freeview through my tv. past few days was able to retune and got bbc channels, but they were unwatchable, now when i do a scan no channels are being found and says to check antenna connection. Annalogue channels are working ok.Ballymena area, any ideas?
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Richard: In situations such as this, retuning is likely to cause more problems and doesn't solve anything. Unless it is known that the TV is tuned to the wrong frequency, then the tuning is OK.
I think that it's likely that the level of the signals to the TV have dropped, maybe due to atmospheric conditions (for example). Now you aren't going to know when they are back because your TV isn't tuned.
I suggest that you attempt to manually tune in any missing channels. Having got some tuned, then don't do another auto-tune scan because it will wipe them. Once you have some, you need to keep manually tuning to the channels (frequencies) of the missing ones.
For manual tuning, the channels used by Divis are:
Mux 1 - BBC One, BBC Two etc - Ch29
Mux 2 - UTV, C4 etc - Ch33
Mux A - ITV3, QVC etc - Ch23
Mux B - BBC Four, BBC Parliament etc - Ch26
Mux C - Pick TV, Dave etc - Ch48
Mux D - Yesterday, Film4 etc - Ch34
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richard1:01 PM
Thanks Dave, My father was in an electrical store in town and was told thesignal from Divis had been reduced or something.
I guess when it increase's again and if i do an auto scan they will appear. In mean time i will try manual scan
Thanks
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richard1:04 PM
Manual scan not working either, is saying signal quality none and level flicks from bar being nothing to ust on.
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