The site is the home of the first UHF transmitter in Ireland opened by RTÉ 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 of 800 kW. Initially just one channel (RTÉ) 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 has begun broadcasting so far. Ultra high frequency (UHF) designates a range (band) of electromagnetic waves whose frequency is between 300 MHz and 3. ... Radio TelefÃs Ãireann (RTÃ; Irish for Radio and Television of Ireland) is the national publicly-funded broadcaster of Ireland. ... 1978 (MCMLXXVIII) was a common year starting on Sunday. ... In radio telecommunications, effective radiated power or ERP is determined by subtracting system losses from system gains. ... The watt (symbol: W) is the SI derived unit of power, equal to one joule per second. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... RTÃ Radio 1 dates back to January 1st 1926, when the Dublin radio station 2RN began broadcasting on a regular basis. ...