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Freeview Light on the Londonderry (Northern Ireland) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps55.003,-7.370 or 55°0'11"N 7°22'11"Wsa_postcodeBT48 0JS


The symbol shows the location of the Londonderry (Northern Ireland) transmitter which serves 37,000 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 Londonderry (Northern Ireland) transmitter.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

Which Freeview channels does the Londonderry 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.

 V max
C29 (538.0MHz)286mDTG-2,000W
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, plus 14 others

 V max
C31 (554.0MHz)286mDTG-2,000W
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, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 UTV +1 (UTV),

 V max
C37 (602.0MHz)286mDTG-2,000W
Channel icons
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

H/V: aerial position (horizontal or vertical)

Are you trying to watch these 44 Freeview channels?

the effected channels
the effected channels
the effected channels
the effected channels

The Londonderry (Northern Ireland) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, Dave, Dave ja vu, DMAX, Drama +1, E4 Extra, YAAAS!, Film4 +1, Food Network, GREAT! action, GREAT! christmas, GREAT! movies extra, GREAT! movies, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, TCC, That's 90s, That's Christmas, Together TV, TRUE CRIME, TRUE CRIME XTRA, W, Yesterday +1.

If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.

Which BBC and ITV regional news can I watch from the Londonderry transmitter?

regional news image
BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,052km northeast (50°)
to BBC Northern Ireland region - 46 masts.
regional news image
UTV Live 0.6m homes 2.5%
from Belfast BT7 1EB, 1,052km northeast (50°)
to UTV region - 46 masts.

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

1950s-80s1984-971997-981998-20122012-134 Sep 2019

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 5 10kW
Analogue 1-4(-4.9dB) 3.2kW
BBCA, D3+4, BBCB(-7dB) 2kW

Which companies have run the Channel 3 services in the Limavady 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. Londonderry 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.

Thursday, 25 October 2012
6:01 PM

At the end of the day no mater what you say or what way you put , DERRY was short changed.

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pat's 9 posts GB flag
pat's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
seamus o'doherty
8:09 PM

Brougher Mountain is to serve a population of 80,000 yet Derry alone has more people than that residing there.
Something just doesn't add up here.

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seamus o'doherty's 6 posts GB flag
seamus's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage

8:53 PM

seamus o'doherty: The "Full Freeview" transmitters usually serve populations in the millions:

Crystal Palace serves about 10673000 people
Winter Hill serves about 6394000 people
Sutton Coldfield serves about 4445000 people
Emley Moor serves about 3684000 people
Black Hill serves about 2234000 people
Sandy Heath serves about 2187000 people
Waltham serves about 1830000 people
Mendip serves about 1711000 people
Belmont serves about 1688000 people
Pontop Pike serves about 1664000 people
Rowridge serves about 1474000 people
Bilsdale serves about 1355000 people
Hannington serves about 1117000 people
Divis serves about 1046000 people
Sudbury serves about 1046000 people
Craigkelly serves about 1022000 people

Then less than a million people...

Oxford serves about 975000 people
Wenvoe serves about 856000 people
Tacolneston serves about 784000 people
The Wrekin serves about 666000 people
Ridge Hill serves about 642000 people
Bluebell Hill serves about 475000 people
Dover serves about 452000 people
Caradon Hill serves about 428000 people
Durris serves about 428000 people
Heathfield serves about 404000 people
Darvel serves about 357000 people
Angus serves about 309000 people
Fenton serves about 309000 people
Stockland Hill serves about 285000 people
Caldbeck serves about 285000 people
Sheffield serves about 285000 people
Kilvey Hill serves about 285000 people
Redruth serves about 231000 people
Whitehawk Hill serves about 228000 people
Moel-Y-Parc serves about 226000 people
Midhurst serves about 223000 people
Beacon Hill serves about 200000 people
Brierley Hill serves about 197000 people
Hemel Hempstead serves about 176000 people
Nottingham serves about 176000 people
Carmel serves about 171000 people
Reigate serves about 166000 people
Rosemarkie serves about 150000 people
Malvern serves about 138000 people
Preseli serves about 135000 people
Tunbridge Wells serves about 126000 people
Lancaster serves about 124000 people
Guildford serves about 114000 people
Limavady serves about 107000 people
Pendle Forest serves about 107000 people
Storeton serves about 107000 people
Llanddona serves about 105000 people

And a very few serve less than 100,000 people...

Rosneath serves about 97000 people
Lark Stoke serves about 90000 people
Huntshaw Cross serves about 88000 people
Brougher Mountain serves about 86000 people
Plympton serves about 83000 people
Keighley serves about 81000 people
Fenham serves about 81000 people

--- 80,000 is here ---

Knockmore serves about 74000 people
Salisbury serves about 74000 people
Bromsgrove serves about 71000 people
Olivers Mount serves about 71000 people
Chatton serves about 69000 people
Chesterfield serves about 59000 people
Bristol Ilchester Crescent serves about 59000 people
Selkirk serves about 57000 people
Rumster Forest serves about 50000 people
Idle serves about 50000 people
Pontypool serves about 45000 people
Bristol Kings Weston serves about 43000 people
Hastings serves about 43000 people
Aberdare serves about 43000 people
BlaenPlwyf serves about 40000 people
Saddleworth serves about 26000 people
Eitshal serves about 24000 people
Keelylang Hill serves about 22000 people
Bressay serves about 13000 people
Torosay serves about 7000 people

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Briantist's 38,907 posts GB flag

9:01 PM

It's also worth noting that a commercial operator will also look at the potential revenue from advertising that can be made, which is not a function of the population, but the wealth of the people who will be watching the adverts:

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Briantist's 38,907 posts GB flag
Saturday, 27 October 2012
9:29 AM

With reference to the Derry / Londerry Transmitter which is now a Major issue in Derry
After your explaination on the matter i now understand the difference between PSB and Com. As we are only a relay transmitter, i have three questions to you
1) Would a main transmitter deliver all channels.
2) what would the rough cost be.
3) Is a cheaper option available for broadcasting all channels

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matt's 2 posts GB flag
Dave Lindsay

1:01 PM

matt: I don't think you've been pointed to this page which goes into it in more detail which you might be interested in:
Will there ever be more services on the Freeview Light transmitters? | - 10 years of independent, free digital TV advice
The COM licensees were required to broadcast from all main transmitters and the relays that carried low-power Freeview before switchover. They were invited to increase their coverage by transmitting from more sites and declined (follow link above for explanation).
I don't know what the cost might be, I'm not a professional. There would obviously be a ongoing maintenance and running costs too.
Also, there would need to be three broadcast channels made available that would not interfere with reception from other transmitters. Those used by each transmitter are planned so as not to have a detrimental effect on viewers of other transmitters, within each transmitter's intended service area.

Freesat is probably the best way to get extra channels in areas that are Freeview Lite. See here for a comparison:
Compare TV Freeview/Freesat | - 10 years of independent, free digital TV advice
ITV3 is on Freesat, contrary to its logo appearing alongside those that aren't.

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Dave Lindsay's 5,724 posts GB flag

1:13 PM

Briantist: Thanks for those numbers.

Since you have all of the data, any chance you could provide a list of the top 20 Freeview light transmitters by homes they provide TV to? :)

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Michael's 358 posts GB flag
8:30 PM

Hello,if i buy a HD TV,will i get all the Irish station as well as the UK one's..Will it be the the same with a HD freeview box or Hd recorder.Confused.

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Patrick's 7 posts IE flag
Dave Lindsay

9:26 PM

Patrick: It depends where you are as to whether you can receive them or not. You may need a second aerial.

A Freeview HD has all the requirements to receive RT whether this comes from a transmitter in the Republic or one of the Freeview transmitters that carry these services.

If you are in the Derry area then Holywell Hill is probably the most likely transmitter to use. This will require a separate aerial to that which points to Sheriff Mountain and carries UK Freeview channels. It will be possible to combine the two aerials into one cable/feed so that you can watch both without having to swap aerial leads or use a different box.

Look around to see what your neighbours have. Aerials pointing to Sheriff Mountain will be vertical (elements up/down) and aerials on Holywell Hill will be horizontal (elements flat).

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Dave Lindsay's 5,724 posts GB flag
Sunday, 28 October 2012

11:57 AM

Michael: Here you go. These are "homes" (rather than "population" as above):

Londonderry ... 37,000
Kidderminster ... 33,000
Mynydd Machen ... 31,000
Fremont Point ... 30,000
Wrexham Rhos ... 29,000
Luton ... 29,000
Tay Bridge ... 27,000
Poole ... 27,000
Perth ... 26,000
Bath ... 24,000
Hertford ... 23,000
Carnmoney Hill ... 21,000
Beecroft Hill ... 21,000
Whitehaven ... 20,000
Weymouth ... 20,000
Millburn Muir ... 20,000
Exeter St Thomas ... 19,000
Bristol Barton House ... 19,000
Thornhill ... 18,000
Seagry Court ... 18,000

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Briantist's 38,907 posts GB flag
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