Pirate radio stations are appearing on unlicenced DAB digital multiplexes in Dublin and Cork, and more are planned for other cities in Ireland.
Juice FM at CSN College of Further Education is joining the new local DAB multiplex.
Online station 8Radio is back for another series of broadcasts on FM across Ireland, along with its first addition to a DAB multiplex.
A new multiplex, éirdab, has started transmitting in Cork with two Christian radio stations already on board.
A new small-scale digital radio multiplex is set to launch in Cork this August for a trial period of 12 months.