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Full Freeview on the Divis (Northern Ireland) transmitter

Brian Butterworth first published this on 1st May 2004 at 08:20 - UK Free TV

54.607,-6.009 or 54°36'24"N 6°0'34"W

BT17 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.

Mux	H/V	Frequency	Height	Mode	Watts
PSB1 BBCA	H max	C27 (522.0MHz)	551m	DTG-	100,000W
	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)	551m	DTG-	100,000W
	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)	551m	DTG-	100,000W
	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 66 TBN UK,
COM4 SDN	H -3dB	C23 (490.0MHz)	551m	DTG-8	50,000W
	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, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others
COM5 ArqA	H -3dB	C26 (514.0MHz)	528m	DTG-8	50,000W
	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)	528m	DTG-8	50,000W
	12 Quest, 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 Al Jazeera Eng, plus 19 others
LBT	H -13dB	C36 (594.0MHz)	528m	DTG-12	5,000W
	from 29th September 2014: 7 NvTv,
NIMM	H -40dB	C48 (690.0MHz)	551m	DTG-	10W
	from 4th September 2019: 53 TG4, 54 RTÉ One, 55 RTÉ Two,

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?

BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast (51°)
to BBC Northern Ireland region - 46 masts.

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 Fields

Transposer

Central Belfast

61 homes

How will the Divis (Northern Ireland) transmission frequencies change over time?

	1950s-80s	1984-97	1997-98	1998-2012	2012-13	4 Mar 2020
	VHF	A K T	A K T	A K T	K T	W T
C1	BBCtv_waves
C21		C4_waves	C4_waves	C4_waves	+D3+4	D3+4
C23					SDN	SDN
C24		ITV_waves	ITV_waves	ITV_waves	BBCB	BBCB
C26					ArqA	ArqA
C27		BBC2_waves	BBC2_waves	BBC2_waves	BBCA	BBCA
C29					ArqB
C30						LBT
C31		BBC1_waves	BBC1_waves	BBC1_waves
C33						com7
C34						com8
C36						_local
C48					NIMM	NIMM
C55_{tv_off}						com7_{tv_off}
C56_{tv_off}						COM8_{tv_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

Local transmitter maps

Divis Freeview Divis DAB Divis TV region BBC Northern Ireland UTV

Which companies have run the Channel 3 services in the Divis transmitter area

Oct 1959-May 2006	Ulster Television
May 2006-Dec 2014	UTV plc

Feb 1983-Dec 1992	TV-am•
Jan 1993-Sep 2010	GMTV•
Sep 2010-Dec 2014	ITV 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.

Is the transmitter output the same in all directions?

Comments

Monday, 18 November 2013

Pauric
11:44 PM

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

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Pauric's 4 posts

Michael

_{sentiment_satisfied}Gold

11:52 PM

Pauric: Could be from Mt Leinster - C23 (490.0MHz) after switchover | ukfree.tv - 11 years of independent, free digital TV advice

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Michael's 358 posts

Thursday, 21 November 2013

PJH

_{sentiment_satisfied}Silver

12:02 AM

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

At your location you should be receiving perfect from , the NIMux at , and from Clermont Cairn.

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

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

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PJH's 240 posts

P. Kieran Ward

_{sentiment_satisfied}Bronze

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

P. Kieran Ward

_{sentiment_satisfied}Bronze

11:10 PM

Michael,

You were thinking that Samantha's problems might be because of from the 's Mt Leinster - www.ukfree.tv link icon (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

P. Kieran Ward

_{sentiment_satisfied}Bronze

11:12 PM

Hi Samantha!

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

Regards

P. Kieran Ward

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P. Kieran Ward's 89 posts

Michael

_{sentiment_satisfied}Gold

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

Friday, 22 November 2013

PJH

_{sentiment_satisfied}Silver

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 from and the NI mux from , as well as 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 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.

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PJH's 240 posts

Monday, 25 November 2013

Samantha
9:11 PM
Carrickfergus

Oh dear, I didn't realise anyone was commenting, sorry guys. Just for , it fixed itself the next day and has been perfect since, until last night when started on all included in 21. It's mostly just that Channel so I think it might just be ongoing . I was lucky enough to have 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

Tuesday, 10 December 2013

PJH

_{sentiment_satisfied}Silver

1:42 AM

COM 7 from is now on air.

10.5 kw rather than 5 kw.

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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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