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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
Wednesday, 24 October 2012
P
PaulN
sentiment_satisfiedBronze

2:54 PM

Reporting MUCH improved signal quality from Divis in islandmagee area from early this morning. Avoidance of CH33 nicely prevents horrors of "lift effect" which previously caused severe interference from the Cumbria mast.

Also happy to report that my T2 equipped Panasonic is nicely picking up NIMM albeit with less quality reported by the UI but no visible defects noted yet.

link to this comment
PaulN's 39 posts GB
S
sweetymillar
2:57 PM

I can't get utv channels. The menu button does not bring up the right icons or instructions. I have a digital tv with built in freeview. Can anyone help

link to this comment
sweetymillar's 1 post GB
G
gerry
sentiment_satisfiedBronze

3:17 PM
Londonderry

sweetymillar: Cannot get UTV channels SD or HD from LIMavady also having problems not getting ITV2,ITV3 Getting ITV4 but not Sky News. Anyone can help?

link to this comment
gerry's 21 posts IE
R
Robin
6:39 PM

Significant increase in BT23 area for us on channels such as Dave, PickTV (all the weaker ones). We are positioned hight in behind a hill and have gone from 35 - 40% up to 81% signal strength. Hopefully that will be the end of breakup due to poor signal strength.

link to this comment
Robin's 2 posts GB
J
JK
7:16 PM
Craigavon

Sorry for cross posting, I made a few posts on the Clermont Carn page but its more relevant here;

In case this is helpful to someone else trying to get the NIMM. My earlier post details signal levels but 35% on C39 and 80% all others.

I use a variable signal booster to feed a loftbox and 4 other rooms. If I adjust the booster down to a point where signal level is 60% on main channels ( and all work well ), the RTE mux disappears.


link to this comment
JK's 7 posts GB
F
Frankie T
7:20 PM

Hi, I can get RTE ok so I assume this means my HD TV has a HD receiver but I cannot get any HD channels. I've tried the Freeview reset procedure but still can't get BBC HD. any thing else worth trying?

link to this comment
Frankie T's 4 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

7:35 PM

Frankie T: Unfortunately the 'HD TV' logo was defined by a Europe-wide body a few years before the UK regulator and broadcasters decided how we would transmit HD. The 'HD TV' logo only requires support for MPEG-4 AVC video transmitted in DVB-T multiplexes. The UK HD services use the newer DVB-T2 standard. It's quite likely that your TV doesn't support it. Look for the 'Freeview HD' logo or check for DVB-T2 support in the manual.

Transmissions in the Republic of Ireland use the MPEG-4 AVC standard in DVB-T multiplexes, so your TV can pick them up. RT transmitted from UK transmitters, the 'Northern Ireland Mini-Mux' or NIMM, uses DVB-T2.

link to this comment
Mike Dimmick's 2,486 posts GB
F
Frankie T
8:15 PM

Thanks Mike, At least now I know not to waste more time trying. Picked what looks like a great PVR on a popular shopping web site.

link to this comment
Frankie T's 4 posts GB
J
jerry
8:35 PM

hi I live in the dungannon area, I can pick up the RTE channels but am only getting sound but no picture through my freeview box. Any suggestions good folks?

link to this comment
jerry's 1 post GB
F
Fergus Maunsell
9:51 PM
Belfast

I live in South Belfast with aerial pointing to Divis and Black mountain.

I am still only receiving SD TV channels after a few re-tune toady. I was hoping to get RTE 1, 2 and TG4

I have a Samsung UE22D5003 22 Inch Full HD 1080p Edge-lit LED TV.

link to this comment
Fergus Maunsell's 6 posts GB
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Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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