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.
_______
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
|
|
Monday, 23 April 2012
P
Peter Henderson2:05 PM
Newtownabbey
On screen messages have now started appearing on BBC1 and BBC2 telling us DSO will happen in October.
Not long to go now.
link to this comment |
Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Wednesday, 25 April 2012
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 today to 14:13 today [BBC]
link to this comment |
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 today to 14:13 today [BBC]
link to this comment |
C
Carl11:01 PM
Caldbeck is not causing all Divis problems unless I and others I know are living in a constant weather lift!
Do everyone a favour and just turn off CH 23 Mux A until it works.
I can bet if there was a BBC licence paying channel on this Mux these problems would not exist!
Now becoming a bad joke!
link to this comment |
Thursday, 26 April 2012
P
Peter Henderson1:15 AM
Newtownabbey
Carl: If you wait for another 6 months I would imagine reception on channel 23 will be fine.
If you can't wait until then, I'd invest in Freesat. As far as I'm aware, all the channels that are on channel 23 are on Freesat i.e. ITV 3, 5USA, 5*, QVC etc.
link to this comment |
Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 yesterday to 14:13 yesterday [BBC]
link to this comment |
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 yesterday to 14:13 yesterday [BBC]
link to this comment |
Friday, 27 April 2012
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 on 25 Apr to 14:13 on 25 Apr [BBC]
link to this comment |
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 14:07 on 25 Apr to 14:13 on 25 Apr [BBC]
link to this comment |
C
Carl7:09 PM
Peter: I am an installer it is my customers I speak for when I have to explain why they are not getting channels. 23 and 33 are in my opinion a disgrace at the minute. The quality is poor on my insruments but the signal can be booming in so a 16db increase in October does not give me any confidence at all. I have freesat HD on my main room but it does not show the Quest channel etc.
The good news for Freesat users is that they are adding 24 HD live feeds for the Olympics!
Which you will not get off a transmitter that cant even cope with Freeview Mpeg2. Perhaps this is one for Ofcom?
link to this comment |
Select more comments
Your comment please