Licensed radio broadcasting in Ireland is one element of the wider Media of Ireland, with 85% of the population listening to a licensed service on any given day.
A morse code transmission on 24 April 1916 from the General Post Office in Dublin by the rebels during the Easter Rising is considered the first broadcast in Ireland. Regular radio broadcasting in Ireland began with 2RN's test transmissions in 1925.2RN has since become RTÉ Radio 1, which celebrated 80 years of uninterrupted broadcasting in January 2006, making it amongst the oldest continuously operating (if not the actual oldest), continuously public service radio station in Europe. RTÉ Raidió na Gaeltachta joined in 1972, and RTÉ Radio 2, now 2FM, launched in 1979.
Commercial radio was outlawed in Ireland until 1989, leading to the development of Irish pirate radio. Upon legalisation, licences were advertised and awarded on a franchise system explained in the article for a national service and a network of regional services covering the country. These all took to the air during 1989 and 1990, and although the national service (Century) eventually failed, all the local services lasted until their licence was revoked, or still exist. Additional licences have been added on an erratic basis since the late 1990s.
An 'international' service, Atlantic 252, also operated on long wave between 1989 and 2002, although it was aimed solely at the United Kingdom and Ireland. It was never subject to the authority of the Broadcasting Commission of Ireland (BCI), and was operated under RTÉ's remit as a joint venture between RTÉ and CLT-UFA. After a short period as a sports station (TeamTalk), the frequencies reverted to sole RTÉ control and are now used as an additional frequency for RTÉ Radio 1.
In Ireland, Community Radio has been active since the late 1970s. However, it took until 1994 before the Independent Radio and Television Commission established an 18-month community radio pilot project to explore and evaluate the potential offered by community broadcasting in an Irish context. This project went operational in 1995, when licenses were issued to eleven community and community of interest groups across the country. 2004 saw the establishment of CRAOL the Community Radio Forum of Ireland.