News

Freeview

Freesat

Maps

Radio

Help!

Archive (2002-)

Click to see updates

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

Thursday, 7 February 2013

Wayne Cochran
10:57 AM
Armagh

You can't take it for granted that it's , as can prove better in some areas of Monaghan.

link to this comment

Wayne Cochran's 8 posts

Lynn Steenson
6:46 PM
Armagh

flipdee: yes all the sockets are working fine.

Wayne Cochran: Before the our was set up by an engineer to point at .
The checks I did initially showed we were getting from Divis. But on your suggestion I checked again and now on investigation I think we are getting as we are picking up PSB1 on UHF 28 and PSB2 on UHF 22. Could the recenet inclement weather be the reason for this?
Also we can up our Irish from Cairn Hill UHF 47 or UHF 52 with equal . Can get the Monaghan transmitter on UHF 55 but quality is poorer!

link to this comment

Lynn Steenson's 15 posts

Wayne Cochran
11:53 PM
Armagh

You've probably looked at this, but is the pointing northeast for ? Brougher would be northwest.

Pre-, Brougher used mostly the same frequencies as Divis, except for 1 mux. It's possible you could have aligned your aerial on either then & got all available , even with slight mutual .

What exactly is happening now will depend on where your aerial is actually pointed. I would think there'll be a relatively straightforward explanation.

link to this comment

Wayne Cochran's 8 posts

Friday, 8 February 2013

Lynn Steenson
12:20 AM
Armagh

Wayne Cochran: I have an engineer calling out, to hopefully sort it out. Once its sorted I'll post the findings here!
Thanks for your input :)

link to this comment

Lynn Steenson's 15 posts

Dave Lindsay

_{sentiment_very_satisfied}Platinum

12:22 AM

Lynn Steenson: If it is the case that your is directed to , then you will need to investigate the possibility of using instead.

Brougher's COMs are 2kW whereas its PSBs are 20kW. The reason being that its COMs are co- with Divis' PSBs and therefore it's done to protect against to Divis PSB viewers.

link to this comment

Dave Lindsay's 5,724 posts

Sunday, 17 February 2013

Dave Lindsay

_{sentiment_very_satisfied}Platinum

11:38 AM

Lynn Steenson: How did you get on?

link to this comment

Dave Lindsay's 5,724 posts

Tuesday, 19 February 2013

Lynn Steenson
2:00 PM

Lindsay: I got the azimuth for and moved the ourselves. We are now getting two of the coms - com 5 and 6, but cant get com4! The is not great on coms, it comes and goes! I'm still waiting on the engineer to come out and hopefully his professional equipment will find the optimal positioning!

link to this comment

Lynn Steenson's 15 posts

Dave Lindsay

_{sentiment_very_satisfied}Platinum

2:21 PM

Lynn Steenson: COM4 is on which is co- with , which is a powerful transmitter.

link to this comment

Dave Lindsay's 5,724 posts

Wednesday, 27 February 2013

P. Kieran Ward

_{sentiment_satisfied}Bronze

1:05 AM
Belfast

Hi all!

A change of topic!

I have noticed that the sound volume on BBC One NI (HD on BBCB)is much lower than BBC One NI (SD on BBCA). Is there a reason why this might be?

Regards

Kieran

link to this comment

P. Kieran Ward's 89 posts

Briantist

_{sentiment_very_satisfied}Owner

8:19 AM

P. Kieran Ward: On a properly implemented the levels should be the same. But many receivers do not follow the spec and the HD will be at least 7dB quieter.

link to this comment

Briantist's 38,844 posts

Select more comments

Page 58

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.

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.

UK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.
Your comments
Your name
Your email
Your site or @twitter
Email me updates
Save my details

Privacy policy: UK Free Privacy policy.