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.
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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, 29 February 2012
John: For a fuller explanation, see here:
Will there ever be more services on the Freeview Light transmitters? | ukfree.tv - independent free digital TV advice
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Wednesday, 14 March 2012
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 today to 14:10 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 today to 14:10 today [BBC]
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DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 today to 14:10 today BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 today to 14:10 today [BBC]
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Thursday, 15 March 2012
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 yesterday to 14:10 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 yesterday to 14:10 yesterday [BBC]
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DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 yesterday to 14:10 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 yesterday to 14:10 yesterday [BBC]
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Friday, 16 March 2012
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 on 14 Mar to 14:10 on 14 Mar BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 on 14 Mar to 14:10 on 14 Mar [BBC]
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DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:06 on 14 Mar to 14:10 on 14 Mar BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 14:09 on 14 Mar to 14:10 on 14 Mar [BBC]
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Saturday, 24 March 2012
P
Peter Henderson1:48 PM
Newtownabbey
Well, I've lost both BBC multipexes along with everything on channel 23 this afternoon.
Obviously due to conditions since there's a bit of a lift on at the moment.
Roll on 24th October when this kind of thing will be a thing of the past. Can't come soon enough.
Pity they couldn't up the power a bit (10 kw would be nice) and add the HD channels between now and then. Still, I suuppose there are all sorts of technical parameters to adhere to.
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Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
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Peter Henderson3:05 PM
Newtownabbey
Notice Caldbeck is quite strong this afternoon so obviously that's the problem since it shares a number of frequencies with Divis.
Hopefully, this wont be a problem after DSO.
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Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
K
KMJ,Derby3:59 PM
Peter Henderson: Remember that after switchover the same frequencies continue to be shared with Caldbeck on the COM muxes,which increase power to 50kw on 24th October 2012 at both Caldbeck and Divis. Reception of the PSB muxes should be better though after changing to the frequencies used by the current analogue services.
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