Carn Clonhugh is a hill just north of Longford Town

Longford

Longford is the county town of County Longford in Ireland. It has a population of 7,622 according to the 2006 census. Approximately one third of the county's population resides in the town. Longford town is also the biggest town in the county...

, Ireland

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,...

, approximately halfway between Drumlish

Drumlish

Drumlish is a village in County Longford, Ireland on the R198 regional road north of Longford Town.-See also:*List of towns and villages in Ireland-External links:*...

 and Ballinalee

Ballinalee

Ballinalee, formerly St Johnstown , is a village in north County Longford, Ireland. It is situated on the River Camlin, and falls within the parish of Clonbroney....

 in the parish of Killoe

Killoe

Killoe is a parish in County Longford, Ireland. It is located about ten kilometeres north of Longford Town and is bordered by the parishes of Drumlish, Ballinalee, Edgeworthstown, Longford and Newtownforbes...

. It is the highest point in County Longford

County Longford

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

. The hill is almost 300 metres above sea level, and has a transmitter situated on the top which rises 100 metres above the peak of the hill. The hill is also known as Cairn Hill, and this is where the name of the transmitter derives (Cairn Hill Transmitter). (The original Irish form of the name refers to the ancient territory of Clann Aodha (Clanhugh) corresponding to the north-western part of County Longford).

Transmitter

The site is the home of the first UHF

Ultra high frequency

Ultra-High Frequency designates the ITU Radio frequency range of electromagnetic waves between 300 MHz and 3 GHz , also known as the decimetre band or decimetre wave as the wavelengths range from one to ten decimetres...

 transmitter in Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 opened by RTÉ

RTE

RTÉ is the abbreviation for Raidió Teilifís Éireann, the public broadcasting service of the Republic of Ireland.RTE may also refer to:* Recep Tayyip Erdoğan, 25th Prime Minister of Turkey...

 in 1978; designed to fill an area of poor reception in the Irish midlands. The transmitter is the most powerful in Ireland, with an ERP

Effective radiated power

In radio telecommunications, effective radiated power or equivalent radiated power is a standardized theoretical measurement of radio frequency energy using the SI unit watts, and is determined by subtracting system losses and adding system gains...

 of 800 kW

Watt

The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

. Initially just one channel (RTÉ 1) was carried, but now the country's four networks are available in UHF from this site. The transmitter has recently (2005) started to carry radio stations; however only 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...

 has begun broadcasting so far. The transmitter begun DTT

Digital terrestrial television

Digital terrestrial television is the technological evolution of broadcast television and advance from analog television, which broadcasts land-based signals...

 transmissions in February 2009.

Analogue radio (FM

Frequency modulation

In telecommunications and signal processing, frequency modulation conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant...

 VHF)

Frequency	kW	Service
89.8 MHz	16	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...

Analogue television

Frequency	UHF	kW	Service
623.25 MHz	40	800	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...
647.25 MHz	43	800	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...
671.25 MHz	46	800	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:...
703.25 MHz	50	800	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
679.25 MHz	47	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)