Radia is an international, informal network of radio stations who produce, share and broadcast radio art works. Since it's inception in 2005 it has promoted a weekly radio art program, each station taking tuns in asking an artist of it's choice to produce a radio art piece to be broadcast in all the network stations. Besides this ongoing effort, Radia stations also participate and produce radio art programs in the context of festivals and other contexts. More can be found about Radia in http://radia.fm and http://en.wikipedia.org/wiki/Radia.
In April 2017 there were 26 stations in the network, representing 17 different countries.