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Freeview Light on the Black Mountain (Northern Ireland) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps54.586,-6.024 or 54°35'10"N 6°1'28"Wsa_postcodeBT17 0LU

 

The symbol shows the location of the Black Mountain (Northern Ireland) transmitter which serves 6,600 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 Black Mountain (Northern Ireland) transmitter.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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Which Freeview channels does the Black Mountain 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
 V -26dB
C41 (634.0MHz)486mDTG-35W
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, 601 BBC Red Button, plus 13 others

PSB2
D3+4
 V -26dB
C44 (658.0MHz)486mDTG-35W
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, 24 ITV4, 33 UTV +1 (UTV),

PSB3
BBCB
 V -26dB
C47 (682.0MHz)486mDTG-65W
Channel icons
74 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

NIMM
 H max
C33+ (570.2MHz)486mDTG-112,000W
Channel icons
51 TG4, 52 RTÉ One, 53 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-11 QPSK 32KN 2/3 10.0Mb/s DVB-T2 MPEG4
H/V: aerial position (horizontal or vertical)

Are you trying to watch these 11 Freeview HD channels?

the effected channels

The Black Mountain (Northern Ireland) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: BBC Four HD, BBC News HD, CBeebies HD, Forces TV, FreeSports, Together TV +1, More4 +1, NOW 80s, PBS America +1, Quest Red +1, RT HD.

If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? page.

Which BBC and ITV regional news can I watch from the Black Mountain 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.

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

1959-80s1984-971997-981998-20122012-134 Sep 2019
VHFB E TB E TB E TB E TK T
C9ITVwaves
C33NIMM
C37C5wavesC5waves
C39BBC1wavesBBC1wavesBBC1waves+NIMM
C41C4wavesC4wavesC4wavesBBCA
C42D3+4
C44D3+4
C45BBC2wavesBBC2wavesBBC2wavesBBCA
C47BBCB
C49tv_offITVwavesITVwavesITVwavesBBCB

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 5 50kW
NIMM≡(-14dB) 2kW
Analogue 1-4(-33dB) 25W
BBCA, D3+4, BBCB(-40dB) 5W

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.

Is the transmitter output the same in all directions?

Radiation patterns withheld

Comments
Wednesday, 13 July 2011
S
Souriau
3:35 AM

What power output will this Black Mountain transmitter will have for the Digital RTE Mux

link to this comment
Souriau's 3 posts GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

5:22 PM

Souriau: We have absolutely no idea. Ofcom haven't published that information yet. The RTE multiplex is not yet licensed. The digital switchover plan does not show any frequencies allocated to this multiplex and that would be where we would expect to find the information.

It looks like it will be broadcast using DVB-T2 in 16QAM 1/2 mode, and therefore you will need a Freeview HD receiver, even if the stations transmit in SD to begin with. They will probably use MPEG-4 AVC/H.264 as that's what's used in the Republic.

The latest we have is at Digital Television - Technical guidance on the availability of TG4 in Northern Ireland after digital switchover .

link to this comment
Mike Dimmick's 2,486 posts GB
Sunday, 14 August 2011
P
Peter Henderson
sentiment_satisfiedBronze

12:14 AM
Newtownabbey

Yep that's what I was wondering Sauriau.

Originally this Mux was planed for Divis, Brougher, Black Mountain, and Carnmoney Hill.

However, there seems to be confusion all round now as this press release Mike has linked to above only mentions Brougher, Black Mountain, and Carnmoney Hill. Is this simply an error, or have they dropped plans for Divis ? I had assumed that Black Mountain was going to be this low powered relay that covers west Belfast.

However, if this transmitter is goung to cover all of greater Belfast, then it's going to have to be at a far greater ERP than 5 wattts.

link to this comment
Peter Henderson's 25 posts GB
Monday, 17 October 2011
Transmitter engineering
sentiment_very_satisfiedOwner

9:44 AM

BLACK MOUNTAIN transmitter - 17 and 18 October 2011: Engineering transmitter work will take place between 08:00hrs and 18:00hrs. TV services that will be disrupted: Analogue services - BBC1, BBC2, ITV and Channel 4 Digital services - Not Applicable [DUK]

link to this comment
Transmitter engineering's 133,937 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

10:41 AM

BLACK MOUNTAIN transmitter - 17 and 18 October 2011: Engineering transmitter work will take place between 08:00hrs and 18:00hrs. TV services that will be disrupted: Analogue services - BBC1, BBC2, ITV and Channel 4 Digital services - Not Applicable [DUK] Over the next week Black Mountain relay: TV (analogue) Service Shutdowns, no digital TV, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 133,937 posts xx
Tuesday, 18 October 2011
Transmitter engineering
sentiment_very_satisfiedOwner

9:54 PM

BLACK MOUNTAIN transmitter - Over the next week Black Mountain relay: TV (analogue) Service Shutdowns, no digital TV, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 133,937 posts xx
Tuesday, 8 November 2011
Transmitter engineering
sentiment_very_satisfiedOwner

10:29 AM

BLACK MOUNTAIN transmitter - 8 November 2011: Engineering transmitter work will take place between 08:00hrs and 18:00hrs. TV services that will be disrupted: Analogue services - BBC1, BBC2, ITV and Channel 4 Digital services - Not Applicable [DUK] Over the next week Black Mountain relay: TV (analogue) Service Shutdowns, no digital TV, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

link to this comment
Transmitter engineering's 133,937 posts xx
Wednesday, 1 February 2012
Saturday, 6 October 2012
M
mr v johnston
9:09 AM

Does the regional channels switch onto digital on the 10th oct as i cant recieve these channels yet,only with the new digital aerial i put up.i live at hannahstown on the black mountain ,or do i need a sateilite dish put up.

link to this comment
mr v johnston's 1 post GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

11:55 AM

mr v johnston: At the first stage of switchover (10th October), BBC standard definition channels go on full power from pre-switchover transmitters such as Divis and they become available from relays such as Black Mountain for the first time. On 24th October the other digital channels become available.

If your main aerial points to Black Mountain then you probably know that it does not broadcast Freeview now. It will also only carry Public Service Broadcaster (PSB) channels after switchover. These are BBC standard definition TV, BBC high definition TV, BBC radio, UTV, UTV+1, UTVHD, ITV2, Channel 4, Channel 4+1, Channel 4HD, E4, More4 and Channel 5. Existing aerials on Black Mountain are expected to work after switchover as all channels are in the current analogue group.

Those who cannot receive from a full-service transmitter (which amounts to about 8.5% of the population) and rely on a PSB-only relay will only have access to PSB channels.

You refer to a "digital aerial". You must be receiving from another transmitter, presumably Divis. This will carry the full complement of Freeview channels after switchover, so you may wish to retain it for this purpose.

Aerials aren't designed specifically to pick up analogue or digital signals. In some cases different aerials are required due to different channels being used or perhaps lower power (weaker) signals).


Reception of RT??/TG4: There is a potential added complication if you would like to receive RT?? and TG4, if you are in an area where they can be picked up. If you have another aerial pointing to a transmitter located in the Republic, then you should be OK with that.

However, these channels will also be broadcast from three Freeview transmitters in Northern Ireland, this being the "NI Mux".

The NI Mux will be broadcast on high power from Black Mountain rather than Divis. It will be horizontally polarised unlike the other Black Mountain channels which are vertically so. The reason for this is because it is principally intended to serve those who receive from Divis. With the two transmitters being close together, the angle between the two is slow small for those at a distance (e.g. for those in Belfast) that a single horizontally polarised aeial will work for both.

If you are in an area where Black Mountain isn't that far off the bearing for Divis, then the single aerial may work for both. If they are in different directions you may wish to try reception of the NI Mux using the horizontal Divis aerial (even though it faces another direction).

If a different aerial is required for Divis and for the NI Mux from Black Mountain, then your existing Black Mountain aerial should work if you change it to horizontal. You can combine the signals from two aerials using a diplexer (providing the channels used by each transmitter suit this setup):

Online TV Splitters, Amps & Diplexers sales

The NI Mux from Black Mountain will be on C39. Divis' channels will range 21 to 29. There is the potential (if the powers that be so decide) that in the future there will be a multiplex on C36 from Divis and two others in the range 31 to 37. For this reason a diplexer that "splits" at C36 would inhibit reception of that channel. The one that splits at C38 would allow it, but the neighbouring channels C37 and C39 will be attentuated. As the NI Mux from Black Mountain will be much higher power than the vertically polarised PSB channels, this may not be an issue.

link to this comment
Dave Lindsay's 5,724 posts GB
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