Complex sentence: For many years it was the only Irish language broadcaster in the country; in recent years it has been joined by Telefís na Gaelige (TG4, a TV service) and the Dublin independent community radio station, Raidió na Life.
Split into simpler sentences: For many years it was however the only Irish language broadcaster in the country. Recently it has been joined by Telefis na Gaelige (TG4) and the Dublin independent local radio station, Raidió na Life.