UDO NOLL is a media artist living and working in Berlin and Cologne and is the founder and developer of Radio Aporee, a platform for projects and practice in the areas of field recording / phonography, sound art and experimental radio. After numerous works in the field of net.art since the mid 90s, e.g. Øtherlands (Documenta X 1997), Parole (Venedig Biennale 2000) und H|u|m|b|o|t (ZKM 1999-2004), Noll increasingly engages with sound in his works, esp. field recordings, their sonic topographies and potential spatio-temporal configurations on both real environments and digital spaces. Within this context, he created the global sound cartography Radio Aporee ::: maps, as well as the miniatures for mobiles, a platform for location based sound art works in public space. The question of relevance and potential of these works and materials for an experimental radio is subject of recents projects.