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Clermont Carn
Carnán Mhaighréid Nái
Clermont 2RN distant.jpg
Clermont Carn transmission site.
Highest point
Elevation 510 m (1,670 ft)
Prominence 312 m (1,024 ft)
Naming
Language of name Irish
Geography
Clermont Carn is located in island of Ireland
Clermont Carn
Clermont Carn
Location in island of Ireland
Location Louth, Ireland
Parent range Cooley Mountains
RTE Transmitter - Clermont Carn. - geograph.org.uk - 687612
2RN transmission site on Clermont Carn

Clermont Carn, variously spelt as "Clermont Cairn", "Clairmont Carn/Cairn" and Carnán Mhaighréid Náir in Irish is a 510m (1673') high peak in the Cooley Mountains in County Louth, Ireland, which is also home to a main 2RN transmission site.

Transmission site

This transmission site in County Louth, was opened in 1981 to provide UHF television coverage for the North East of the Republic of Ireland, counties Louth, Meath, and North county Dublin. However, with the site being less than 1 km (1000yds) from the border it was clear that this transmitter would be used to provide RTÉ services into Northern Ireland. Initially the two channels RTÉ One and RTÉ2 were carried on Ch52 and Ch56 with Virgin Media One (Ch66) and TG4 (Ch68) following later. In 1982, a 2M Amateur Radio Repeater was installed. FM radio transmission was also added providing coverage of the five national channels to a wide area.

In 2002 a new cable-stayed mast 120m (400') tall was erected, this greatly improved coverage into Northern Ireland. The existing self-supporting tower was truncated, and is now only used for microwave links and the Amateur Radio Repeater.

DAB, digital radio broadcasting from Clermont Carn began in 2006 and Digital terrestrial television (DTT) trials started in 2008.

In common with all 2RN transmitters in Ireland, analogue television transmissions from this site ended on 24 October 2012, but uniquely, Clermont Carn is the only main television transmitter in Ireland that is vertically polarised, and does not service any relay transmitters. Today the Irish digital television service Saorview is broadcast from here to a sizeable area including a large tract of Northern Ireland, with a good signal being received in Belfast and beyond. This overspill has been welcomed by the UK's Ofcom who have provided information for viewers in Northern Ireland about receiving TG4 and the RTÉ channels, both from within Northern Ireland on the UK's Freeview service, and via the Saorview overspill.

Current transmissions

Digital Television

Frequency UHF kW Multiplex Pol
642 MHz 42 160 Saorview 1 V
666 MHz 45 160 Saorview 2 V

Digital Radio

Frequency Block kW Multiplex
227.36 MHz 12C 5 DAB Ireland Mux 1

Analogue FM radio

Frequency kW Service
87.8 MHz 40 RTÉ Radio 1
95.2 MHz 40 RTÉ lyric fm
97.0 MHz 40 RTÉ 2fm
102.7 MHz 40 RTÉ Raidió na Gaeltachta
105.5 MHz 40 Today FM
107.9 MHz 0.3 Newstalk

Amateur Radio

Frequency W Service
145.675 MHz (Output) 145.075 MHz (Input) CTCSS 110.9 Hz 15 EI2CCR 2m 12.5 kHz Repeater (Dundalk Amateur Radio Society www.ei7dar.com)

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