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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
Monday, 18 November 2013
P
Pauric
11:44 PM

Well Kieran Ward, after further manually rescanning Ch 23 and Ch26 it still could not recognised these channels, it looks as though it could be interference with other Tv or mobile masts. Could it be my amplifier is too high !. I probably will get a aerial person to look at it.

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Pauric's 4 posts IE
Thursday, 21 November 2013
P
PJH
sentiment_satisfiedSilver

12:02 AM

Samantha: Might be better to get someone out to have a look at your aerial set up just to make sure it isn't damaged.

At your location you should be receiving perfect reception from Divis, the NIMux at Black Mountain, and Saorview from Clermont Cairn.

I'd recommend Newtownabbey Aerials. Reasonably priced and he knows what he's doing.

You need a Freeview HD set top box or television in order to receive RTE or the NIMux from Black Mountain.

link to this comment
PJH's 240 posts GB
P
P. Kieran Ward
sentiment_satisfiedBronze

10:57 PM

Hi PJH!

Re: Samantha's problem - I would be very careful regarding recommending any specific business on this forum. While you were maybe happy with the service you may have received from the company, any outcome for someone else may not meet their expectations and might have an effect on the credibility of this site.

P. Kieran Ward

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P. Kieran Ward's 89 posts GB
P
P. Kieran Ward
sentiment_satisfiedBronze

11:10 PM

Michael,

You were thinking that Samantha's problems might be because of interference from the Saorview's Mt Leinster transmitter - www.ukfree.tv link icon C23 (490.0MHz). Do you realise that this transmitter is over 200miles away from Garrickfergus?

Regards

P. Kieran Ward

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P. Kieran Ward's 89 posts GB
P
P. Kieran Ward
sentiment_satisfiedBronze

11:12 PM

Hi Samantha!

Have you tried resetting your receiver to 'Factory Reset' and then rescanning all the local UHF channels?

Regards

P. Kieran Ward
























link to this comment
P. Kieran Ward's 89 posts GB
M
Michael
sentiment_satisfiedGold

11:19 PM

P. Kieran Ward: You realise that I put "Pauric: " at the start of my post? ;)

Just pointing out it could be that, as I don't know his exact location.

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Michael's 358 posts GB
Friday, 22 November 2013
P
PJH
sentiment_satisfiedSilver

7:19 PM

Kieran: I don't think any of that's the cause of Samantha's problems. We're simply beating around the bush here.

She should have perfect reception from Divis and the NI mux from Black Mountain, as well as Saorview from Clermont Cairn (try Digital UK's postcode checker if you don't believe me). Mt Leinster shouldn't even come onto the equation in Carrick.

and fine, if you don't want me to mention a specific installer that's no problem.

However, I'd have a look through Yellow Pages and get someone out (whoever she chooses). Looks like an aerial problem to me. Something like a loose connection or possibly water ingress.

You can spend a lot of time messing around with this type of thing and get nowhere. Better to get a professional to sort out the problem in my opinion.

For want of repeating myself, Divis should be absolutely no problem for someone living in Carrick.

link to this comment
PJH's 240 posts GB
Monday, 25 November 2013
S
Samantha
9:11 PM
Carrickfergus

Oh dear, I didn't realise anyone was commenting, sorry guys. Just for an update, it fixed itself the next day and has been perfect since, until last night when interference started on all channels included in Channel 21. It's mostly just that Channel so I think it might just be ongoing engineering. I was lucky enough to have sky before I moved house so honestly have no idea if this interference is normal, it certainly wasn't in Glengormley a few years ago. Well thanks for the suggestions everyone but I think i'll leave it as is. Sporadic and tempermental tv is better than no tv :)

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Samantha's 3 posts NO
Tuesday, 10 December 2013
P
PJH
sentiment_satisfiedSilver

1:42 AM

COM 7 from Divis is now on air.

10.5 kw rather than 5 kw.

link to this comment
PJH's 240 posts GB
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Your comment please
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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