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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
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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
Friday, 13 April 2012
Transmitter engineering
sentiment_very_satisfiedOwner

6:30 PM

DIVIS transmitter - Analogue BBC ONE Weak Signal from 14:45 today BBC TWO Weak Signal from 13:55 today to 14:10 today [BBC] Over the next week Divis main transmitter: TV (analogue) working normally, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 138,015 posts xx
P
Peter Henderson
sentiment_satisfiedSilver

7:25 PM

Leonerd Brett:

Digital UK's postcode checker indicates Divis reception in youir area should be fine, post DSO.

Be careful the gain of your aerial isn't too high as this will cause problems when Divis icreases power to 100/50 kw on the 24th October.

link to this comment
Peter Henderson's 240 posts GB
Monday, 16 April 2012
Transmitter engineering
sentiment_very_satisfiedOwner

10:31 AM

DIVIS transmitter - Analogue BBC ONE Weak Signal from 14:45 on 13 Apr to 15:45 on 13 Apr BBC TWO Weak Signal from 13:55 on 13 Apr to 14:10 on 13 Apr [BBC] Over the next week Divis main transmitter: TV (analogue) working normally, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 138,015 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

10:32 AM

DIVIS transmitter - Analogue BBC ONE Weak Signal from 14:45 on 13 Apr to 15:45 on 13 Apr BBC TWO Weak Signal from 13:55 on 13 Apr to 14:10 on 13 Apr [BBC] Over the next week Divis main transmitter: TV (analogue) working normally, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 138,015 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

3:32 PM

DIVIS transmitter - Analogue BBC ONE Weak Signal from 14:45 on 13 Apr to 15:45 on 13 Apr BBC TWO Weak Signal from 13:55 on 13 Apr to 14:10 on 13 Apr [BBC]

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Transmitter engineering's 138,015 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

3:32 PM

DIVIS transmitter - Analogue BBC ONE Weak Signal from 14:45 on 13 Apr to 15:45 on 13 Apr BBC TWO Weak Signal from 13:55 on 13 Apr to 14:10 on 13 Apr [BBC]

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Transmitter engineering's 138,015 posts xx
Friday, 20 April 2012
C
Carl
sentiment_satisfiedBronze

10:40 PM

Mux A channel 23 is up to its old tricks again! I have had numorous emails about this in the last 4 days. Is this going to be sorted once and for all? If the last place to go digital is not working now what hope is there for switchover?

I have read about Caldbeck and conditions reasons like this will not be acceptable to the public after October!

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Carl's 51 posts GB
Saturday, 21 April 2012
P
Peter Henderson
sentiment_satisfiedSilver

12:50 AM
Newtownabbey

Noticing some breakup on 23 here too Carl.

This channel has always ben weaker than the rest at this location, with 34 being the strongest by far (despite being only 1.6 kw).

I'm afraid there's really nothing we can do about the situation until after October 24th.

50kw will be a massive increase in power compared to the measly 2.3 kw that we have now.

To be honest, I can't see why Divis couldn't have something of a power increase (10 kw for example) and the HD channels added between now and then, given there are only four regions left to switch, but I suppose they have to follow protocol on these things.



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Peter Henderson's 240 posts GB
R
Robin
2:59 PM

I'm noticing breakup on channel 48 (carrying Sky News, Dave etc) on Divis over the last week or so. Signal strength and quality is varying wildly in BT23 area.

Hope this issue is sorted ASAP - can we advise Divis operators of our issue in any way?

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Robin's 2 posts GB
Monday, 23 April 2012
C
Carl
sentiment_satisfiedBronze

12:38 AM

So judging by no reply what so ever that there is a problem, yes there is a problem and we hope it can be sorted when the switchover happens?

The government has sold all the frequency Fact!

Made a fortune Fact!

Mobile phone companies buying from government Fact!

Are you going to have problems with your viewing after DSO yes Fact!

Please feel free to say different!

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Carl's 51 posts GB
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