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Full Freeview on the Divis (Northern Ireland) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps54.607,-6.009 or 54°36'24"N 6°0'34"Wsa_postcodeBT17 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.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
_______

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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C27 (522.0MHz)551mDTG-3100,000W
Channel icons
1 BBC One (SD) Northern Ireland, 2 BBC Two Northern Ireland, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 13 others

PSB2
D3+4
 H max
C21+ (474.2MHz)551mDTG-3100,000W
Channel icons
3 UTV (SD) (UTV), 4 Channel 4 (SD) NI ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 NI ads, 18 More4, 26 ITV4, 30 E4 +1, 35 UTV +1 (UTV),

PSB3
BBCB
 H max
C24 (498.0MHz)551mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD Northern Ireland, 102 BBC Two HD (England), 103 UTV HD (UTV), 104 Channel 4 HD NI ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -3dB
C23 (490.0MHz)551mDTG-850,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 Pop Player, 211 Ketchup TV, 212 YAAAS!, plus 15 others

COM5
ArqA
 H -3dB
C26 (514.0MHz)528mDTG-850,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H -3dB
C30 (546.0MHz)528mDTG-850,000W
Channel icons
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 91 Classic Hits, 235 Aljazeera English, plus 18 others

LBT
 H -13dB
C30 (546.0MHz)528mDTG-125,000W
Channel icons
from 29th September 2014: 7 NvTv,

com7
 H -9.1dB
C55 (746.0MHz)551mDTG-612,400W
Channel icons


NIMM
 H -40dB
C48 (690.0MHz)551mDTG-10W
Channel icons
from 4th September 2019: 53 TG4, 54 RTÉ One, 55 RTÉ Two,

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 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?

regional news image
BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast (51°)
to BBC Northern Ireland region - 46 masts.
regional news image
UTV Live 0.6m homes 2.5%
from Belfast BT7 1EB, 1,044km northeast (51°)
to UTV region - 46 masts.

Are there any self-help relays?

Chapel FieldsTransposerCentral Belfast61 homes

How will the Divis (Northern Ireland) transmission frequencies change over time?

1950s-80s1984-971997-981998-20122012-134 Mar 2020
VHFA K TA K TA K TK TW T
C1BBCtvwaves
C21C4wavesC4wavesC4waves+D3+4D3+4
C23SDNSDN
C24ITVwavesITVwavesITVwavesBBCBBBCB
C26ArqAArqA
C27BBC2wavesBBC2wavesBBC2wavesBBCABBCA
C29ArqB
C30LBT
C31BBC1wavesBBC1wavesBBC1waves
C33com7
C34com8
C36_local
C48NIMMNIMM
C55tv_offcom7tv_off
C56tv_offCOM8tv_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

Oct 1959-May 2006Ulster Television
May 2006-Dec 2014UTV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Divis was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Comments
Friday, 26 October 2012
C
Carl
sentiment_satisfiedBronze

5:14 PM
Belfast

Sinead

Another thought occurred if the aerial has been up for quite a while it may be an older Group A type for Divis which cuts off at channel 37.

As channel 39 falls into the Group K band which covers channels 21 - 48.



link to this comment
Carl's 51 posts GB
P
Peter
5:20 PM

Carl

Thank you for your reaction.
Yes, signal bar is 95-100% and quality 100%. (54.6054,-5.9849) 

link to this comment
Peter's 7 posts GB
C
Carl
sentiment_satisfiedBronze

7:49 PM

Peter
Sounds like your signal is too good/strong sounds like you need to attenuate the signal in other words turn it down.
A 20db attenuator will probably solve your issue.

In cases were your close to the transmitter the TV tuner can get overloaded.

Hope this helps.

link to this comment
Carl's 51 posts GB
C
Carl
sentiment_satisfiedBronze

8:01 PM

Peter
If you have any internal booster in the Tv menu ensure it is off. Make and model of your setup may help and was it fine before DSO? If so then I would say its overload.

link to this comment
Carl's 51 posts GB
P
Peter
9:01 PM

Carl
Maybe it will sound strange, but before DSO here was impossible to receive any freeview channels. I tested on two different freeview boxes. Now I have TV with built-in freeview. (Digihome LED22913FHDDVD). So, you think a attenuator will solve it? (54.6054,-5.9849) 

link to this comment
Peter's 7 posts GB
C
Carl
sentiment_satisfiedBronze

10:18 PM

Peter
In that case first thing to do is speak to a neighbour or two and see if they are having issues as you should have been getting it before DSO. Find that out first as my previous post is probably irrelevent . The more info you can give the better chance of resolving it.

If your neighbours are getting it then its a fault with your setup.

Regards Carl

link to this comment
Carl's 51 posts GB
P
Peter
11:04 PM

Carl

I see. I will ask therefore.
Thank you very much. I appreciate your help.

Best Regards Peter (54.6054,-5.9849) 

link to this comment
Peter's 7 posts GB
Saturday, 27 October 2012
M
M Collins
2:16 PM

I have a free view box BT179LE
I receive bbc hd and channel 4 hd
but cannot get rte
I have an external aerial and previously had a clear rte analogue signal
I assume my box is hd if I recieve bbc hd
any ideas?
mmcd

link to this comment
M Collins's 1 post GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

2:30 PM

M Collins: What aerials have you got pointing where?

Are these (if you have more than one) connected together so as to allow you to view channels from each on the same TV?

At your location the following may be possibilities:

- Divis (Freeview): aerial horizontal @ 352 degrees
- Black Mountain (Freeview): aerial vertical @ 339degrees
- Clermont Carn (Saorview): aerial vertical @ 201degrees

link to this comment
Dave Lindsay's 5,724 posts GB
M
m collins
7:34 PM

Dave
thanks
I have an rte aerial as well as one for bbc. (plus unused sky dish)
I am not sure of the where they are pointing. (probably black mountain)
Previously I had rte and the other channels on the same tv

Last night on a regular tuner (on a dvd recorder) i was able to receive audio for rte but no picture. I assumed this was because the tuner was not hd.
I also have a free view box which receives bbc hd it will not pick up rte
I wonder should I search on a different frequency.


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m collins's 2 posts GB
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