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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, 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)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, 30 E4 +1, 35 UTV +1 (UTV),

PSB3
BBCB
 H max
C24 (498.0MHz)551mDTG-6100,000W
Channel icons
73 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, 29 ITV2 +1, 32 5STAR, 33 5Action, 42 GREAT! movies action, 45 Channel 5 +1, 56 5SELECT, 58 ITVBe +1, 59 ITV3 +1, 60 ITV4 +1, 64 Blaze, 67 CBS Reality, 68 Horror Channel, 74 Drama +1, 78 TCC, 81 Blaze +1, 203 CITV, 211 Ketchup TV, 212 YAAAS!, plus 16 others

COM5
ArqA
 H -3dB
C26 (514.0MHz)528mDTG-850,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 4Music, 36 pick, 40 Quest Red, 43 Food Network, 46 Film4 +1, 47 Challenge, 48 4seven, 57 Smithsonian Channel, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 9 others

COM6
ArqB
 H -3dB
C30 (546.0MHz)528mDTG-850,000W
Channel icons
25 Dave ja vu, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 41 CBS Justice, 44 HGTV, 68 CBS Drama, 82 Talking Pictures TV, 84 PBS America, 234 RT, 235 Aljazeera English, plus 17 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,  Court TV, 65 FreeSports, 71 Quest Red +1, 76 Now 70s, 86 More4 +1, 87 PBS America +1, 91 That's 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: 53 TG4, 54 RTÉ One, 55 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
Monday, 17 September 2012
D
Deirdre
9:34 PM

BT7 3EE
I am new to digital tv and recently set up a box. I have a small indoor aerial. Reception is okay sometimes but other times, it freezes/looses signal/picture goes to small frozen squares. Also should I be able to get film4? Sometimes, I can improve reception by disconnecting from mains. Advice I've read mentions interference from other appliances/mobile phones but this is not relevant in my case. Any help/advice very much appreciated.

link to this comment
Deirdre's 2 posts GB
Tuesday, 18 September 2012
B
B Moffatt
9:46 AM
Belfast

Did a quick check on the Digital UK site with your post code and you should get Divis ok (it says 100%).

Go to dtg.org.uk

Type in your postcode (put a house name or number it makes it more accurate) and then in the page that opens click 'detailed view' (top right)you will get the transmitters muxes and their notional strengths.

I am in the Isle of Man west coast and we get it ok here (although you get some break-up (on some muxes incl Film 4) in unusual weather conditions.

I would not do any aerial work until after DSO (Oct 10th and 24th) because then the signal will be boosted dramatically.

If you still have probs after Oct 24th get the aerial man!

Cheers

link to this comment
B Moffatt's 6 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

4:50 PM

Deirdre: Although what B.Moffatt has said is perfectly correct regarding Oct 24th, however as far as your present reception is concerned the problems you are experiencing are not entirely unexpected when using an aerial of the type described even although you are indicated as being just slightly over 4 miles away from the station, as Film 4 is on the least powered transmitter of the group by only being on 1.6Kw whereas the other transmitters range from 2Kw / 2.3Kw.

By the way from October 24th the BBC / ITV / HD will be on 100Kw and with the three commercial channels being on 50Kw.

link to this comment
jb38's 7,179 posts GB
Wednesday, 19 September 2012
M
MEM
12:44 AM

I'm currently using an Aerial masthead amp to receive terrestrial broadcasts. I've heard that when the full digital signal is transmitted that these may actually have a negative impact on decent reception.

Can anyone confirm that and would I need to remove the amp. Thanks.

link to this comment
MEM's 12 posts GB
J
jb38
sentiment_very_satisfiedPlatinum

7:01 AM

MEM: Regarding the latter not necessarily so! although as you have not provided a post code or one from nearby (a shop etc) an assessment of the signal levels expected in your area cannot be made, but once switch over does takes place should they be found to be slightly too high, the symptoms of being exactly the same as the reverse situation when a signal being received is on the weak side, ie: various fashions of picture break etc, then you have the choice of either removing the amp or alternatively purchasing a simple attenuator costing about £4 or so which is placed in line with the TV or boxes aerial input socket, this in most cases completely curing the problem.

That said, when switch over takes place there are usually always a very small number of people whose signal is right over the top whereby its causing blocking in the TV or boxes tuner resulting in no picture being seen, the test of whether this is applying or not being to temporarily try a set top aerial, as if this works then the main aerials signal requires attenuating, but at this point in time I really wouldn't be too worried about this possible problem.



link to this comment
jb38's 7,179 posts GB
Friday, 21 September 2012
M
MEM
1:39 AM

I took the opportunity last night to do a digital scan whilst the engineering works were being carried out. Frustratingly whilst the scanner hovered over the channels for a good few seconds I failed to pick up a single channel. I don't know if this is anything to worry about or not. Can anyone enlighten me?

I live in the Newry BT35 postcode area.

link to this comment
MEM's 12 posts GB
Tuesday, 25 September 2012
P
Peter Henderson
sentiment_satisfiedSilver

9:47 PM

You'll definitely get Freeview Lite from at least one of the Newry relay stations after Ontober 24th MEM, and possibly the Camlough transmitter as well.

Try Digital UK's postcode checker just to see if there's any possibilty of picking up Divis.

Failing that, there's always Freesat as an option if you don't want to pay Sky.

link to this comment
Peter Henderson's 240 posts GB
Thursday, 27 September 2012
M
MEM
11:48 PM

Thanks Peter I did a detailed postcode check on digital UK and according to that I'll get great reception from the Newry relay.

However it only gave me a score of 67 and 59 respectively for Mux c and d from Divis. I have absolutely no idea what channels are broadcast on these Mux but would a booster give me a better chance of receiving them? Thanks.

link to this comment
MEM's 12 posts GB
Saturday, 29 September 2012
P
Peter Henderson
sentiment_satisfiedSilver

9:40 PM

Multiplex C are the Sky channels i.e. Sky News, Pick TV, etc. Mux D is ITV 4, Viva, Film 4 etc.

I'd treat those Digital UK postcode predictions with a pinch of salt though. For example, they claim I'm getting variable reception of Mux 1 (BBC 1, BBC 2 etc,) Mux A (ITV 3, Channel 5 +1, 5 USA etc.) and Mux B (News 24, BBC 4 etc.) yet in practice reception is generally fine (with a relatively modest widebant aerial) so you'll never really know until you try.

If Divis doesn't work then the local Freeview Lite combined with Freesat would be just as good as Divis. You're only really missing around 5 channels that aren't on the main Freeview transmitters, and your gaining a lot of others on Freesat that aren't even on Freeview.

Freesat could work out cheaper in the long run than a large aerial for Divis, which can be quite expensive these days.

Don't forget you can install and octo LNB on your dish and have as many as 8 Freesat receivers, 4 PVRs, or any combination in between.

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Peter Henderson's 240 posts GB
Wednesday, 10 October 2012
M
MEM
12:28 AM

Goodbye BBC2 analogue.

link to this comment
MEM's 12 posts GB
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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.

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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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