Bunaíodh RTÉ Raidió na Gaeltachta le seirbhís iomlán raidió a chur ar fáil do phobal na Gaeltachta agus do lucht labhartha na Gaeilge ar fud na tíre. Tháinig an stáisiún ar an aer don chéad uair ag 3 i.n., Domhnach Cásca, 2 Aibreán 1972.

Raidió na Gaeltachta began broadcasting from its main studio at Casla in Conamara on Easter Sunday, 2 April 1972.

The station studio building in Casla was blessed by Fr Padraig Ó Coincheannáin and the Reverend Canon Cosslett Ó Cuinn.  The Head of Raidió na Gaeltachta, Padraig Ó Raghallaigh, introduced a recorded message from President Eamon De Valera.  

Raidió na Gaeltachta's first outside broadcast was a Mass celebrated at St MacDara’s Church in An Cheathrú Rua.  Mass was celebrate by the Archbishop of Tuam, Doctor Joseph Cunnane, with music and singing by a choirs from Connemara, Cúl Aodh, and the Dominican Choir from Tallaght.

An RTÉ News report broadcast on 2 April 1972.  The reporter is Breandán Ó hEithir.