Full Freeview on the Divis (Northern Ireland) transmitter

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

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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.

Are there any planned engineering works or unexpected transmitter faults on the Divis (Northern Ireland) mast?

Divis transmitter - Divis transmitter: Possible effect on TV reception week commencing 11/11/2024 Pixelation or flickering on some or all channels

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.

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, plus 14 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, 28 ITVBe, 30 E4 +1, 35 UTV +1 (UTV), 71 That’s 60s,
PSB3 BBCB	H max	C24 (498.0MHz)	551m	DTG-	100,000W
	46 5SELECT, 101 BBC One HD Northern Ireland, 102 BBC Two HD Northern Ireland, 103 UTV HD (UTV), 104 Channel 4 HD NI ads, 105 Channel 5 HD, 106 BBC Four HD, 107 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 U&Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 U&Dave ja vu, 58 ITV3 +1, 59 ITV4 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 81 Blaze +1, 83 Together TV, 91 WildEarth, 93 ITVBe +1, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 251 Al Jazeera English, 255 FRANCE 24 (in English), 265 Rok Sky +1, plus 29 others
COM5 ArqA	H -3dB	C26 (514.0MHz)	528m	DTG-8	50,000W
	11 Sky Mix, 17 Really, 19 U&Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 U&Drama +1, 65 That's TV 2, 70 Quest +1, 74 &UYesterday +1, 76 That's TV 2 MCR, 233 Sky News, plus 13 others
COM6 ArqB	H -3dB	C30 (546.0MHz)	528m	DTG-8	50,000W
	12 Quest, 25 U&W, 27 U&Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! christmas, 56 That's TV (UK), 63 GREAT! romance mix, 73 HobbyMaker, 75 That's 90s, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 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?

P

P. Kieran Ward

_{sentiment_satisfied}Bronze

1:43 AM

Gavin!

COM 6 is on UHF 29 from at 50,000 watts where as LBT multiplex is on UHF Channel 30 at 5,000 watts but I would be very surprised if it is from COM 6 multiplex. The with me in North Belfast on EPG 791 and 792 seem to be fine here.

P. Kieran Ward

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P. Kieran Ward's 89 posts GB flag

P

PJH

_{sentiment_satisfied}Silver

12:22 PM

Yep, breaking up here today again.

It's the that appears to be fluctuating widely rather than the strength so it may be part of the testing process.

I've also noticed some receivers are better at receiving it than others.

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PJH's 240 posts GB flag

H

Hannah
1:40 PM

Bt34 4ue

I am receiving to my TV. My neighbour is having the same problem, so is unlikely to be something to do with the aeriel. This has been ongoing since 06:30 this morning. BBC1cam snack. It only momentarily

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Hannah's 1 post GB flag

P

P. Kieran Ward

_{sentiment_satisfied}Bronze

11:35 PM

Hannah! Your location is Annalong from your postcode. I take it that you get your TV from the . If this is correct there doesn't appear to be any problems at this transmitter. The transmitter is a Freeview Light Transmitter which will only carry fewer than . If you know about UHF channels the Kilkeel Transmitter uses three UHF Channels to supply 40 stations on UHF channels: 39, 42 and 45. Have a look at the link: Kilkeel (Northern Ireland) Freeview Light transmitter | ukfree.tv - 11 years of independent, free digital TV advice

I you get your problem sorted!

Regards

P. Kieran Ward (BT14 6NQ)

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P. Kieran Ward's 89 posts GB flag

G

Gavin
5:03 PM

This is very wierd though. Last night was sitting firmly on 50% strength & 90-100% with no breakup. Then, without warning, it dropped to 0%/0% and disappeared for half a minute or so before returning at the previous levels. This happened a few times while I was monitoring it.

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Gavin's 8 posts GB flag

W

Wayne Cochrane
1:34 PM

Nothing weird: just that your is right on its decoding threshold & a small drop in is enough for it to lose signal lock.

Most receivers will go from 100 - 0% with very little provocation.

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Wayne Cochrane's 8 posts IE flag

J

James Vance
8:30 PM
Belfast

Hi bought a new tv with what type aeril would I need for bt155ag

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James Vance's 2 posts GB flag

James's: J's Freeview map J's terrain plot J's frequency data J's Freeview Detailed Coverage

P

P. Kieran Ward

_{sentiment_satisfied}Bronze

11:31 PM

Hi James Vance!

I live quite close-by your address and can I start by asking you for the make and model of the TV you bought. This will tell me what stations you will be able to receive.

It depends on the type of tuner in the set so that is why I ask the question. Your area is served by the but depending on the make and model of your set you may be able to also receive the 3 RTE/TG4 stations transmitted from (NI Mini ).

I used No: 27 in your street to get the information contained in this link: Coverage Checker - Detailed View

This is the Digital UK site's Post Code checker.

Have a look at this link and get back to me.

Regards

P. Kieran Ward (BT14 6NQ)

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P. Kieran Ward's 89 posts GB flag

D

Daniel Trimble
7:40 PM

Hi does anyone know of a company called NI based in Belfast. Can't find a website anymore and the phone's are not answered. Perhaps they no longer trade? They used maybe still do looked after our apartment block in Annadale Embankment. The letting company went bust and can't get a hold of anyone our flats have had since Tuesday night. Thanks

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Daniel Trimble's 1 post GB flag

J

James Vance
8:21 PM
Belfast

Hi Kieran the tv is a samsung ue28 f4000 tuner this helps to find what type of I would need

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James Vance's 2 posts GB flag

James's: J's Freeview map J's terrain plot J's frequency data J's Freeview Detailed Coverage

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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.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

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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