In the 1990s, twenty minutes was all it took for local authorities in the Austrian city of Graz to detect and neutralise any illegal radio transmitter. Back then, Reni Hofmüller was part of a group of activists who took over the airwaves with pirate broadcasts every Sunday from the mountains surrounding the city. After short 18-minute sessions, the Radio Dauerwelle team would pack up its equipment and clear out, moments before the authorities arrived. In this podcast, Hofmüller shares her early commitment with radio, as well as her obsession with dismantling the invisible in order to understand and question it. A trip through time that takes us from the 1980s to the present, through her personal involvement in feminist discussions from the perspective of new media. Our conversation is riddled with references to her commitment to open source, to doing things together, to the uninhibited mixing of disciplines, and to her passion for the electromagnetic sphere and bicycles.