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Full Freeview on the Divis (Northern Ireland) transmitter

first published this on - UK Free TV
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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
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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
Sunday, 17 July 2011
Briantist
sentiment_very_satisfiedOwner

8:05 PM

Mark: NI was listed in the plan I was shown for "first quarter 2013", due to co-ordination issues with the ROI. As soon as official dates are announced I will change them, but as a general rule I have not had to move dates...

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Briantist's 38,844 posts GB
Monday, 18 July 2011
P
Peter Henderson
sentiment_satisfiedBronze

1:53 PM
Newtownabbey

Brian: I've been told unofficially it's now the end of Nov. 2012 for Divis, but don't take that as gospel

Digital UK did have a date of March 31 2013, if I remember correctly but this has been changed and simply states 2012.

Apparently a DSO manager for the province will be appointed in September to oversee the process so things may become clearer then.



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Peter Henderson's 25 posts GB
Briantist
sentiment_very_satisfiedOwner

4:54 PM

Peter Henderson: Perhaps they will actually decide at some point. I'm going to leave the date as it is until someone shows me something official.

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Briantist's 38,844 posts GB
Tuesday, 19 July 2011
M
Mark
2:58 AM
Ballymena

Thanks guys

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Mark's 13 posts GB
P
Peter Henderson
sentiment_satisfiedBronze

2:56 PM
Newtownabbey

No problem Mark.

The mini RTE mux is also a topic of confusion.

Initially, press reports stated it would be broadcast from Divis, Brougher, Black Mountain (presumably the low power relay for West Belfast) and Carnmoney Hill.

I have been told unoficially the service will be using the old mast which is to be retained for this and existing FM Radio.

However, the latest information on Digital UK's website omits Divis and only states that the mini RTE mux will be broadcast from Black Mountain, Brougher, and Carnmoney Hill.

So what do they mean by Black Mountain ? Is it the low power relay for west Belfast (5 watts post DSO) or will it be a higher power transmitter covering greater Belfast and the surrounding area ?

Confusion all round it would seem.

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Peter Henderson's 25 posts GB
Friday, 22 July 2011
P
Peter Henderson
sentiment_satisfiedBronze

1:55 PM
Newtownabbey

Experiencing problems with Divis today.Lots of break up etc.

Signal strength is much the same.

Not sure if any engineering work is taking place or not.

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Peter Henderson's 25 posts GB
Briantist
sentiment_very_satisfiedOwner

1:56 PM

Peter Henderson: There is no engineering work, see BBC - Reception problems .

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Briantist's 38,844 posts GB
Thursday, 4 August 2011
P
Peter Henderson
sentiment_satisfiedBronze

6:58 PM
Newtownabbey

Brian : A spokesperson for UTV (one of the directors) has just stated on UTV Live that DSO in the province will start in the middle of next year (June ?) and be completed by the end of 2012.

link to this comment
Peter Henderson's 25 posts GB
Briantist
sentiment_very_satisfiedOwner

8:57 PM

Peter Henderson: The DSO process (well, for the view) starts two weeks before it ends, so "the middle of the year" must be referring to preparatory work.

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Briantist's 38,844 posts GB
P
Peter Henderson
sentiment_satisfiedBronze

11:40 PM
Newtownabbey

There are three main transmitters in NI Brian so I assume he's probably referring to all of them over the period i.e. Brougher, Limivady, and Divis.

I take it they do all switch at different times ?

I think Limivady is due to go first.

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Peter Henderson's 25 posts GB
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