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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.

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 29/05/2023 Pixelation or flickering on some or all channels

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

Thursday, 10 July 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

4:32 AM

- : BBC National DAB Radio Weak from 13:04 to 16:04 yesterday. FM: Radio 1 FM Weak Signal from 12:12 yesterday to 16:01 yesterday, Radio 2 FM Weak Signal from 12:20 yesterday to 15:59 yesterday, Radio 3 FM Weak Signal from 12:20 yesterda [BBC]

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Transmitter engineering's 140,848 posts

Friday, 11 July 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

4:32 AM

- : BBC National DAB Radio Weak from 13:04 on 09 Jul to 16:04 on 09 Jul. FM: Radio 1 FM Weak Signal from 12:12 on 09 Jul to 16:01 on 09 Jul, Radio 2 FM Weak Signal from 12:20 on 09 Jul to 15:59 on 09 Jul, Radio 3 FM Weak Signal from 12:20 on 09 Ju [BBC]

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Transmitter engineering's 140,848 posts

Edward O'Neill
7:44 PM
Ballymena

Is off line at moment, being received. I live in . Any appreciated

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Edward O'Neill's 1 post

P. Kieran Ward

_{sentiment_satisfied}Bronze

10:36 PM

Hi Edward!

While I live in North Belfast and I get most of my from which I would say it is about 40+ miles from your location in a different direction, I haven't found any problem with strength or . It would appear that Arqiva are currently undertaking some work on the but this work appears to effect Radio only. The info provided by the BBC indicates that while there is still transmission of all radio channels - some are at a weaker strength than normal.

Regards

P. Kieran Ward

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P. Kieran Ward's 89 posts

Thursday, 24 July 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

4:32 PM

- : BBC National DAB Radio Very Weak from 10:28 today to 12:52 today. FM: Radio 1 FM Very Weak Signal from 10:27 today to 12:59 today, Radio 1 FM Weak Signal from 10:29 today, Radio 2 FM Very Weak Signal from 10:28 today to 12:52 today, Radio 2 FM [BBC]

link to this comment

Transmitter engineering's 140,848 posts

Transmitter engineering

_{sentiment_very_satisfied}Owner

7:31 PM

- : BBC National DAB Radio Weak from 10:28 today to 12:52 today. FM: Radio 1 FM Weak Signal from 10:29 today to 12:59 today, Radio 1 FM Weak Signal from 10:27 today to 12:59 today, Radio 2 FM Weak Signal from 10:29 today to 12:59 today, Radio 2 FM [BBC]

link to this comment

Transmitter engineering's 140,848 posts

Friday, 25 July 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

4:32 AM

- : BBC National DAB Radio Weak from 10:28 to 12:52 yesterday. FM: Radio 1 FM Weak Signal from 10:29 yesterday to 12:59 yesterday, Radio 1 FM Weak Signal from 10:27 yesterday to 12:59 yesterday, Radio 2 FM Weak Signal from 10:29 yesterda [BBC]

link to this comment

Transmitter engineering's 140,848 posts

Transmitter engineering

_{sentiment_very_satisfied}Owner

1:33 PM

- : BBC National DAB Radio Weak from 10:28 to 12:52 yesterday. FM: Radio 1 FM Weak Signal from 10:27 yesterday to 12:59 yesterday, Radio 2 FM Weak Signal from 10:28 yesterday to 12:52 yesterday, Radio 3 FM Weak Signal from 10:28 yesterda [BBC]

link to this comment

Transmitter engineering's 140,848 posts

Saturday, 26 July 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

4:32 AM

- : BBC National DAB Radio Weak from 10:28 on 24 Jul to 12:52 on 24 Jul. FM: Radio 1 FM Weak Signal from 10:27 on 24 Jul to 12:59 on 24 Jul, Radio 2 FM Weak Signal from 10:28 on 24 Jul to 12:52 on 24 Jul, Radio 3 FM Weak Signal from 10:28 on 24 Ju [BBC]

link to this comment

Transmitter engineering's 140,848 posts

Tuesday, 2 September 2014

Transmitter engineering

_{sentiment_very_satisfied}Owner

10:33 AM

- : BBC National DAB Radio Weak from 10:06 today. FM: Radio 1 FM Weak Signal from 10:06 today, Radio 2 FM Weak Signal from 10:06 today, Radio 3 FM Weak Signal from 10:06 today, Radio 4 FM Weak Signal from 10:06 today, Radio Ulster FM Weak Signal [BBC]

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Transmitter engineering's 140,848 posts

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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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