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

9:15 PM
Belfast

Carl - No problems with being experienced in North Belfast this evening!

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P. Kieran Ward's 89 posts GB flag

P.'s: P's Freeview map P's terrain plot P's frequency data P's Freeview Detailed Coverage

P

PJH

_{sentiment_satisfied}Bronze

2:40 PM

Noticed something strange on my Sony PVR as well Carl. Signal strength 100% but message saying received. Only seemed to be affecting the Sony and all stations on channel 21. Other TV's/PVRs were fine.

A quick manual retune of 21 restored all .

Strange.

Absolutely no adverse affects due to the weather conditions, which definitely wouldn't have been the case last year.

definitely was a good job. Pity it took so long to come here but it was well worth waiting for.

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PJH's 75 posts GB flag

C

Carl

_{sentiment_satisfied}Bronze

7:47 PM

Hi, Got an answer apparently there was an being carried out between the 16th - 17th which caused , ITV etc to drop out. It effected certain boxes and TV brands. As you say PJH a retune sorted it.

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Carl's 51 posts GB flag

P

P. Kieran Ward

_{sentiment_satisfied}Bronze

10:36 PM

Hi all!

Does anyone have any update on when Northern Visions TV will be available on in the greater Belfast area?

Regards

P. Kieran Ward

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P. Kieran Ward's 89 posts GB flag

P

PJH

_{sentiment_satisfied}Bronze

12:27 AM

Sometime during the autumn, according to a516:

a516digital: Local TV

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PJH's 75 posts GB flag

P

P. Kieran Ward

_{sentiment_satisfied}Bronze

11:20 PM
Belfast

Hi PJH!

I was aware it is due to recommence broadcasting and the last date I saw for this recommencement was 9th September 2013. It was a case of the raising the capital (cash) to pay the broadcasting fees to Arqiva. I was just wondering if they (NVTV) have raised the funds necessary.

P. Kieran Ward

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P. Kieran Ward's 89 posts GB flag

P.'s: P's Freeview map P's terrain plot P's frequency data P's Freeview Detailed Coverage

P

PJH

_{sentiment_satisfied}Bronze

1:47 AM

Yep, seem to remember 9th September on the a516 website at one stage, so I wonder if the re launch has been put back ?

When I watched it over at my parents house in East Belfast it seemed like not a bad wee with some very interesting docus. and shows, though they seemed to go round in a loop.

I'm not sure if we'll receive it here on or not, though everything is great from at the moment thanks to the increase.

Even at pre levels it was mostly OK, so I would imagine NVTV should be fine. I'm not sure what their ERP will be on Freeview (4kw ?.

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PJH's 75 posts GB flag

Arun
10:22 AM
Stoke-on-trent

Hi Brian,
I'm on the Mux and I'm seeing some abnormal activity in the PAT table on RF 21 (PSB2 - mux). The PAT seems to be refreshing constantly even though there is no apparent change in the transmitted information. (& the version numbers seem to be toggling between 01 & 0F). Any idea why this is occurring ? Thanks.

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Arun's 7 posts GB flag

Arun's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

L

liam maginess
5:28 PM

I recently bought a box but it seems I need the right to receive the rte can u me?i live in co.down the retailer said its rte compatable

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liam maginess's 1 post GB flag

Dave Lindsay

_{sentiment_very_satisfied}Platinum

7:00 PM

liam maginess: It should be a box. The NI Mux is on UHF 39 from (adjacent to ).

If, when manual tuning, there is an option for - DVB-T or DVB-T2 - then the latter should be selected.

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Dave Lindsay's 5,724 posts GB flag

Page 46

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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