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Full Freeview on the Divis (Northern Ireland) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps54.607,-6.009 or 54°36'24"N 6°0'34"Wsa_postcodeBT17 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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C27 (522.0MHz)551mDTG-3100,000W
Channel icons
1 BBC One (SD) Northern Ireland, 2 BBC Two Northern Ireland, 9 BBC Four, 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)551mDTG-3100,000W
Channel icons
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, 25 ITV4, 29 E4 +1, 34 UTV +1 (UTV),

PSB3
BBCB
 H max
C24 (498.0MHz)551mDTG-6100,000W
Channel icons
72 Shopping Quarter , 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, 204 CBBC HD, plus 1 others

COM4
SDN
 H -3dB
C23 (490.0MHz)551mDTG-850,000W
Channel icons
 CCXTV, 12 Quest, 20 Drama, 21 5USA, 28 ITV2 +1, 31 5STAR, 32 Paramount Network, 41 GREAT! movies action, 45 Channel 5 +1, 55 5SELECT, 57 ITVBe +1, 58 ITV3 +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 68 Horror Channel, 73 Drama +1, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, 212 YAAAS!, plus 15 others

COM5
ArqA
 H -3dB
C26 (514.0MHz)528mDTG-850,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 30 4Music, 35 pick, 39 Quest Red, 42 Food Network, 46 Film4 +1, 47 Challenge, 48 4seven, 56 Smithsonian Channel, 69 Quest +1, 74 Yesterday +1, 82 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H -3dB
C30 (546.0MHz)528mDTG-850,000W
Channel icons
23 Dave ja vu, 26 Yesterday, 33 GREAT! movies, 38 DMAX, 40 CBS Justice, 43 HGTV, 67 CBS Drama, 81 Talking Pictures TV, 84 PBS America, 234 RT, 235 Aljazeera English, plus 18 others

LBT
 H -13dB
C30 (546.0MHz)528mDTG-125,000W
Channel icons
from 29th September 2014: 7 NvTv,

com7
 H -9.1dB
C55 (746.0MHz)551mDTG-612,400W
Channel icons
 Together TV +1,  Merit, 64 FreeSports, 70 Quest Red +1, 76 Now 70s, 86 More4 +1, 87 PBS America +1, 89 Court TV, 96 Forces TV, 106 BBC Four HD, 107 BBC News HD, 113 RT HD, 114 Quest HD, 205 CBeebies HD, plus 2 others

NIMM
 H -40dB
C48 (690.0MHz)551mDTG-10W
Channel icons
from 4th September 2019: 52 TG4, 53 RTÉ One, 54 RTÉ Two,

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
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?

regional news image
BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast (51°)
to BBC Northern Ireland region - 46 masts.
regional news image
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 FieldsTransposerCentral Belfast61 homes

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

1950s-80s1984-971997-981998-20122012-134 Mar 2020
VHFA K TA K TA K TK TW T
C1BBCtvwaves
C21C4wavesC4wavesC4waves+D3+4D3+4
C23SDNSDN
C24ITVwavesITVwavesITVwavesBBCBBBCB
C26ArqAArqA
C27BBC2wavesBBC2wavesBBC2wavesBBCABBCA
C29ArqB
C30LBT
C31BBC1wavesBBC1wavesBBC1waves
C33com7
C34com8
C36_local
C48NIMMNIMM
C55tv_offcom7tv_off
C56tv_offCOM8tv_off

tv_off Being removed from Freeview (for 5G use) after November 2020 - 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

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

Oct 1959-May 2006Ulster Television
May 2006-Dec 2014UTV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV 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.

Comments
Tuesday, 24 December 2013
P
PJH
sentiment_satisfiedSilver

6:20 PM

Local TV mux much stronger today.

Still quite weak but no break up.

link to this comment
PJH's 240 posts GB
G
Gavin
6:27 PM

Still dropping out occasionally for me. Tried manually tuning a liitle high because I thought it might be interference from c29, but it didn't help :/

link to this comment
Gavin's 1 post GB
Wednesday, 25 December 2013
P
P. Kieran Ward
sentiment_satisfiedBronze

1:43 AM

Gavin!

COM 6 multiplex is on UHF Channel 29 from Divis 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 interference from COM 6 multiplex. The test signal with me in North Belfast on EPG 791 and 792 seem to be fine here.

P. Kieran Ward

link to this comment
P. Kieran Ward's 89 posts GB
P
PJH
sentiment_satisfiedSilver

12:22 PM

Yep, breaking up here today again.

It's the signal quality 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.

link to this comment
PJH's 240 posts GB
Monday, 30 December 2013
H
Hannah
1:40 PM

Bt34 4ue

I am receiving no signal to my freeview 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
P
P. Kieran Ward
sentiment_satisfiedBronze

11:35 PM

Hannah! Your location is Annalong from your postcode. I take it that you get your Freeview TV signal from the Kilkeel transmitter. 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 channels than Divis. 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 hope you get your problem sorted!

Regards

P. Kieran Ward (BT14 6NQ)

link to this comment
P. Kieran Ward's 89 posts GB
Tuesday, 31 December 2013
G
Gavin
5:03 PM

This is very wierd though. Last night C30 was sitting firmly on 50% strength & 90-100% quality with no picture 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.

link to this comment
Gavin's 8 posts GB
Wednesday, 1 January 2014
W
Wayne Cochrane
1:34 PM

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

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

link to this comment
Wayne Cochrane's 8 posts IE
J
James Vance
8:30 PM
Belfast

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

link to this comment
James Vance's 2 posts GB
P
P. Kieran Ward
sentiment_satisfiedBronze

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 Divis Digital Freeview transmitter but depending on the make and model of your set you may be able to also receive the 3 RTE/TG4 stations transmitted from Black Mountain (NI Mini Multiplex).

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)

link to this comment
P. Kieran Ward's 89 posts GB
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