Clermont Carn, variously spelt as "Clermont Cairn", "Clairmont Carn/Cairn" or other variations is a 510m high peak in the Cooley Mountains

Cooley Mountains

The Cooley Mountains are located on the Cooley Peninsula in northeast County Louth in Ireland. They consist of two ridges oriented northwest to southeast, separated by the valley of Glenmore with the Big River running through it....

 in County Louth

County Louth

County Louth is a county of Ireland. It is part of the Border Region and is also located in the province of Leinster. It is named after the town of Louth. Louth County Council is the local authority for the county...

 which is also home to a main RTÉ Network Limited

RTÉ Network Limited

RTÉ Transmission Network Limited is a wholly owned subsidiary of Raidió Teilifís Éireann which runs Ireland's principal terrestrial television and radio broadcast signal transmission networks. They operate 10 main sites, and over 100 smaller relays and transposers, which carry either television,...

 transmission site.

Transmitter

Along with the transmitter on Three Rock Mountain

Three Rock Mountain

Three Rock Mountain is a mountain in Dun Laoghaire-Rathdown County in Ireland. It is high and forms part of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock, Kilmashogue and Tibradden Mountains. The mountain takes its name from the three groups of granite rocks at...

, Clermont is one of two sites used by RTÉast Networks for technological trials. The two sites have previously carried the test RTÉ DAB Multiplex

RTÉ DAB Multiplex

Digital Audio Broadcasting in Ireland is the only current form of digital radio transmission in the state. It was launched to the public on 30 November 2006, with trials taking place in 1998, 2001 and 2006...

 and are currently carrying the tests for Digital terrestrial television in Ireland. The transmitter covers most of the north-east of Ireland, with usable quality FM signals reaching Dublin and much of Northern Ireland.

Due to the site's proximity to Northern Ireland, neither of the 5 national ROI

Republic of Ireland

Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

 radio stations were able to receive frequencies in their allocated band ranges, meaning all 5 stations are significantly out-of-band.

Analogue television

Frequency	UHF	kW	Service
719.25 MHz	52	N/A	RTÉ One RTÉ One RTÉ One is the flagship television channel of Raidió Teilifís Éireann , and it is the most popular and most watched television channel in Ireland. It was launched as Telefís Éireann on 31 December 1961, it was renamed RTÉ Television in 1966, and it was renamed as RTÉ One upon the launch of RTÉ...
751.25 MHz	56	N/A	RTÉ Two RTÉ Two RTÉ Two is a free-to-air general entertainment channel operated by Irish state broadcaster Raidió Teilifís Éireann. RTÉ Two is available throughout the island of Ireland through digital terrestrial service Saorview, VHF and UHF bands, and is also available via satellite to Irish subscribers of...
831.25 MHz	66	N/A	TV3 TV3 Ireland TV3 is a free-to-air commercial television network in the Republic of Ireland. Launched on 20 September 1998 it was Ireland's first commercial broadcaster. The channel is owned by TV3 Group a subsidiary of Doughty Hanson & Co.-The TV3 Group:...
847.25 MHz	68	N/A	TG4 TG4 TG4 is a public service broadcaster for Irish language speakers. The channel has been on-air since 31 October 1996 in the Republic of Ireland and since April 2005 in Northern Ireland....

Digital Television

Frequency	UHF	kW	Operator
727.25 MHz	53	N/A	Saorview Saorview Saorview is the national free-to-air digital terrestrial television service in Republic of Ireland.The service began operation on 29 October 2010 on a trial basis with full launch on 26 May 2011. By legislation it was required to be available to approximately 90% of the population by end of...  (Mux 1)

Digital Radio

Frequency	Block	kW	Operator
227.360 MHz	12C	N/A	DAB Ireland Mux 1

Analogue Radio

Frequency	kW	Service
87.8 MHz	N/A	RTÉ Radio 1 RTÉ Radio 1 RTÉ Radio 1 is the principal radio channel of Irish public-service broadcaster Raidió Teilifís Éireann and is the direct descendant of Dublin radio station 2RN, which began broadcasting on a regular basis on 1 January 1926...
95.2 MHz	N/A	RTÉ lyric fm RTÉ lyric fm RTÉ lyric fm is an Irish classical music radio station, owned by the public-service broadcaster Raidió Teilifís Éireann. The station, which is based in Limerick, was launched in 1999 and is available on FM in Ireland, on satellite, on Sky Digital in Ireland and United Kingdom and via the...
97.0 MHz	N/A	RTÉ 2fm RTÉ 2fm RTÉ 2fm, or 2FM as it is more commonly referred to, is Raidió Teilifís Éireann's second national radio station. It broadcasts popular music programming aimed at a young Irish audience.- History :...
102.7 MHz	N/A	RTÉ Raidió na Gaeltachta RTÉ Raidió na Gaeltachta RTÉ Raidió na Gaeltachta , abbreviated RnaG, is the Irish-language radio service of the public-service broadcaster Raidió Teilifís Éireann. The station is available on FM in Ireland and via satellite and on the Internet.- History :...
105.5 MHz	N/A	Today FM Today FM Radio Ireland Ltd, trading as 100-102 Today FM is an Irish commercial FM radio station which is available nationally. The station, which commenced broadcasting on Saint Patrick's Day in 1997, can be received nationally and carries a mix of music and talk...

Other Information

• UHF Aerial Group C/D (Green) - Channels 48-68 / Frequency 686-854 MHz
• Polarisation: Vertical
• Nominal Max ERP Vision: 300 kW
• Site Height: 1674 ft A.S.L.
• Mast Height: 300 ft