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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
Saturday, 10 November 2012
C
Carl
sentiment_satisfiedBronze

8:25 PM

Mem

DAB is and has been a disaster from the start as far as I'm aware it has been put on hold until the powers that be can work out what they will do with it.

I would stick to radio through tv at the moment.


link to this comment
Carl's 51 posts GB
Sunday, 11 November 2012
M
MEM
1:32 AM

Well I found out that Clermont Carn is broadcasting DAB at only 5kw. I believe the TV signal is broadcast at 160kw.

Don't think I would have any chance of getting a DAB signal at that level no matter what aerial I use.

link to this comment
MEM's 12 posts GB
K
KMJ,Derby
sentiment_satisfiedGold

7:20 PM

MEM: Try entering 12C manually then move the radio around until a signal is showing then select store. You are not too far away from Clermont Carn, but it does depend on what hills are blocking the signal path. As you say, a more powerful transmitter would help too but DAB generally is somewhat underpowered if it is to match reception on FM. Are you able to receive the FM services from Clermont Carn OK?

link to this comment
KMJ,Derby's 1,811 posts GB
Monday, 12 November 2012
F
Felix valentine
7:02 PM
Downpatrick

Hi can I receive rte with my aerial in the loft and pointing towards divis

link to this comment
Felix valentine's 1 post GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

7:06 PM

Felix valentine: Probably. You will need a Freeview HD reciever; RT/TG4 are in standard definition. They are broadcast from Black Mountain rather than Divis but it is only four degrees anti-clockwise from Divis, so, assuming no issues such as an obstruction, then the single aerial should be expected to work for both.

link to this comment
Dave Lindsay's 5,724 posts GB
Tuesday, 13 November 2012
W
William Hawe
6:31 PM
Belfast

Since the most recent NI switchover I have been experiencing problems with the digital teletext service (picture is fine). All BBC channels have an intermittent text service, i.e. page returns to TV picture or 'Technical difficulties..' message displayed. The Channel 4 text service is not intermittent but the page content has not been updated since 27th October. My aerial is situated on an external wall & our local transmitter is Divis. Can anyone confirm that the digital teletext service is functioning correctly from the Divis transmitter, alternatively any assistance in resolving the matter would be much appreciated, thanks in advance.

link to this comment
William Hawe's 1 post FR
Wednesday, 14 November 2012
G
gerry flanagan
8:23 PM

wats the best[ freeview ] transmitter to go for in virginia in cavan

link to this comment
gerry flanagan's 4 posts IE
Dave Lindsay
sentiment_very_satisfiedPlatinum

8:32 PM

gerry flanagan: Any you can get!

Basically it will be down to Divis or Brougher Mountain. Both use only Group A channels. Brougher's COMs are on very low power and co-channel with Divis' PSBs, so they are not at all likely.

link to this comment
Dave Lindsay's 5,724 posts GB
G
gerry flanagan
8:44 PM

hi my name is[ gerry flanagan ]from dublin iam A tv satellite rigger instaler one of them guys that used to pot up 100 feet mast tv aerials just to get bbc. i have job to du in hotel in virginia co cavan wat transmitter will i goe for [freeview]also just dun job on the north road the ward finglas nth co dublin app 7 miles from dublin city and got all freeview channels from divis groop A uased high gain triax wide band 32W MAST HEAD AMP .I WAS IN SHOCH NEVER TAUGHT FREEVIEW WOOD GET DOWN SO NEAR DYBLIN HAPPYDAYS

link to this comment
gerry flanagan's 4 posts IE
Dave Lindsay
sentiment_very_satisfiedPlatinum

8:56 PM

gerry flanagan: Wideband aerials have less gain on Group A channels. See:

Rowridge Transmitter

For that reason, there is no such thing as a High Gain wideband aerial for the A group frequencies, of which Divis uses exclusively. For that reason, the better bet, where a high-gain aerial is required, is to use a Group A high-gain aerial.

link to this comment
Dave Lindsay's 5,724 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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If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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