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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 MAX, 209 Ketchup TV, 210 Ketchup Too, 211 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 8 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, 88 Classic Hits, 235 Aljazeera English, plus 19 others

LBT
 H -13dB
C36 (594.0MHz)528mDTG-125,000W
Channel icons
from 29th September 2014: 7 NvTv,

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
Thursday, 31 May 2012
B
Bernard Moffatt
7:36 PM

Levels I listed for this morning are about as good as it gets here - prior to ASO -obviously I would expect a major lift then.

Only the mux on 34 can be problematic in some weather and when that is the case 23 also drops.

Ch. 26,29,33 and 48 are always fairly constant. As backup I get the HD mux from the local transmitter here (Beary - Ch 50)I do not have an aerial set to that its just strong enough to come in 'on the side' of my aerial system - my other aerial is set to C Carn to get the analogue signals from RTE etc - and pulls in a good signal although no digital as yet.

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Bernard Moffatt's 6 posts GB
P
Peter Henderson
sentiment_satisfiedSilver

10:30 PM

I've noticed nothing happening at this location (Jordanstown) and all multiplexes are as normal.

Strangely, the strongest is 34 (Film 4, ITV 4 etc.) which is always end stopping. Weakest is 23 which is more prone to break up than the rest. 48 is also stronger than the BBC multiplexes and 33 (UTV etc.)

During the high power tests in Janury signals on all multiplexes were 100%, so 24th October should be worth waiting for.

It may well be that a lot of people who use relay transmitters could in fact get an adequate signal from Divis once the power increases.


link to this comment
Peter Henderson's 240 posts GB
Friday, 1 June 2012
Transmitter engineering
sentiment_very_satisfiedOwner

5:28 PM

DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 10:07 yesterday to 10:15 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 10:07 yesterday to 10:15 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

5:28 PM

DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 10:07 yesterday to 10:15 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 10:07 yesterday to 10:15 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Saturday, 2 June 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:30 AM

DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 10:07 on 31 May to 10:15 on 31 May BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 10:07 on 31 May to 10:15 on 31 May [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

4:30 AM

DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air from 10:07 on 31 May to 10:15 on 31 May BBC Digital TV (One, Two, Three, CBBC, News) Off Air from 10:07 on 31 May to 10:15 on 31 May [BBC]

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Transmitter engineering's 138,029 posts xx
Tuesday, 5 June 2012
C
Chris
8:06 PM

When can I get RTE channels in BT20 area please?

link to this comment
Chris's 1 post GB
B
Brian
10:56 PM
Bangor

Anyone else having problems with C34 ITV4 Film4 etc in the Bangor area, weak signal, seemed to start around 1st June 2012

link to this comment
Brian's 1 post GB
Wednesday, 6 June 2012
Dave Lindsay
sentiment_very_satisfiedPlatinum

10:59 AM

Chris: The Northern Ireland Mini-Multiplex that will carry RT will come on air at the completion of switchover on 24th October.

link to this comment
Dave Lindsay's 5,724 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

11:02 AM

Brian: There has been engineering works in preparation for switchover.

Don't retune if you have difficulties as these won't be caused or resolved by retuning and you may end up loosing affected channels from your receiver altogether.

link to this comment
Dave Lindsay's 5,724 posts GB
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