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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
Saturday, 3 October 2020
D
denis campbell
sentiment_satisfiedBronze

4:20 PM

3rd October 2020.

Aerial: 8 el yagi in the roofspace, into a multiswitch feeding 6 apartments.
I am on the top floor about 15m asl

Divis at 34km los:
The 100kW muxes are showing signal "strength" of 10.
The 50kW muxes are showing 9.
Mux 36, listed as being 5kW is showing 5.
Mux 55, listed as being 12kW is showing 7.

Black Mountain at 33km los:
Mux 33, listed as 2kW is giving 7. It must be a lot more than 2kW.
This is a rebroadcast of four RTE channels, programmes ar often not available due to broadcasting rights.

The figures are from my Panasonic DVR, which shows signal strength of 0 to 10, an arbitary figure.
RTE from Claremont Carn at 55km gives a useable signal on Mux 42 and 45 using a 14 ele Log Periodic on my balcony. Saorview shows TV channel numbers in the 800 series on my Freeview tuner - to avoid confusion with the Freeview.

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denis campbell's 22 posts GB
C
Chris.SE
sentiment_satisfiedGold

10:03 PM

denis campbell:

Well what can I say, except to update you on some of the information that's not been updated on this site -
Divis, Local mux on C36, power was increased to 10kW when it moved from C30 on 4th Sept.2019.
Divis, COM7 on C55, power changed to 8.9kW when it moved from C51 on 4th March 2020.
Black Mountain, NIMM on C33, power increased to 3kW when it moved from C39 on 4th Sept.2019.
The reason that the NIMM on C33 gets to you with such a good signal is that it's modulation is the more resilient QPSK (which some say is the equivalent of 10x that using 64QAM) but doesn't have the bandwidth.

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Chris.SE's 1,762 posts GB
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