Community radio is unique when compared to its commercial and public service counterparts in that, as a non-profit activity, it is owned, managed and controlled by local communities, In theory therefore, community radio offers the potential for more broad-based participation in deliberation and debate within the public sphere engaging multiple voices and perspectives and contributing towards progressive social change. Drawing on a study of four community radio stations in Ireland within a framework drawn from the evolving work of Habermas and associated deliberative, social and media theorists, in this article we examine the extent to which this is the case in practice. We find that democratic participation is still not optimised within the four stations studied. We argue that the reasons for this lie in four main areas: a somewhat limited policy framework; a focus within training programmes on technical competencies over content; the weakness of linkages between stations and their local community groups; and the failure of the latter to understand the unique remit of community radio. The article draws lessons of specific interest to researchers and activists in these domains, as well as offering a framework to those interested in examining community media’s contribution to the re-animation of the public sphere more broadly.