Truskmore () is a mountain with a height of on the border of

County Sligo County Sligo ( , gle, Contae Shligigh) is a county in Ireland. It is located in the Border Region and is part of the province of Connacht. Sligo is the administrative capital and largest town in the county. Sligo County Council is the local ...

and County Leitrim in

Ireland Ireland ( ; ga, Éire ; Ulster-Scots: ) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the s ...

. It is the highest summit in the Dartry Mountains and the highest in Sligo. It is in the middle of a

plateau In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides ...

whose edges are marked by high

cliff In geography and geology, a cliff is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on co ...

s,Ordnance Survey Ireland - Online map viewer
/ref> including Benbulbin (526m), Benwiskin (514m), Slievemore (597m) and Kings Mountain (462m). The top of Truskmore lies in County Sligo, a short distance from the border with County Leitrim; however, the mountain itself is in both counties.

Transmission site

The Truskmore television transmitter opened on 1 February 1962, the second of the original five main Telefis Éireann transmitters to go on air after

Kippure Kippure () at , is the 56th-highest peak in Ireland on the Arderin scale, and the 72nd-highest peak on the Vandeleur-Lynam scale.Mountainviews, (September 2013), "A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins", Coll ...

(December 1961). It used as antenna carrier a 135 metre

tall mast. Initially its transmissions were only in 405-line television system, 405 lines on VHF channel 11, with 625-lines transmissions beginning in November 1963 on Channel I. The new

RTÉ Radio RTÉ Radio is a division of the Irish national broadcasting organisation Raidió Teilifís Éireann. RTÉ Radio broadcasts four analogue channels and five digital channels nationwide. Founded in January 1926 as 2RN, the first broadcaster in t ...

VHF FM radio service was added in 1966. The second television service came in 1978 on Channel G and

UHF Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (on ...

television transmission began in 1996 with the advent of

Teilifís na Gaeilge TG4 ( ga, TG Ceathair, ) is an Irish free-to-air public service television network. The channel launched on 31 October 1996 and is available online and through its on demand service TG4 Player in Ireland and beyond. TG4 was formerly known a ...

. In 2009 a new 175-m mast was erected in preparation for the changeover to digital television transmission and the original 1961 mast was removed. Since the national shutdown of the analog television networks on 24 October 2012, Truskmore now broadcasts the Irish DTT service Saorview and the national FM radio channels to the northwest of Ireland, including a large area of the west of

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label=Ulster Scots dialect, Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is #Descriptions, variously described as ...

. The site is owned and operated by 2RN, a subsidiary of the Irish public service broadcaster

RTÉ (RTÉ) (; Irish for "Radio & Television of Ireland") is the national broadcaster of Ireland headquartered in Dublin. It both produces and broadcasts programmes on television, radio and online. The radio service began on 1 January 1926, whil ...

Current transmissions

Digital television

Analog FM radio

DTT relay transmitters

Gallery

Image:Sligo. The End Of The Road, with Truskmore mast in the distance. - geograph.org.uk - 1038465.jpg, Truskmore (in the distance) from the south Image:Truskmore Summit.jpg, OSI Triangulation pillar marking the summit of Truskmore Image:Truskmore_tall.jpg, Transmission site on the summit

References

{{Mountains and hills of Connacht Hewitts of Ireland Marilyns of Ireland Mountains and hills of County Sligo Mountains and hills of County Leitrim Highest points of Irish counties Transmitter sites in Ireland Mountains under 1000 metres