Transmission Arts: Artists & Airwaves brings together a genealogy of 150 artists and artworks, and more than 250 images, from 1921 to the present that encompasses performance, video, radio theatre, sound art, media installation, networked art, and acoustic ecology. Here is a fascinating account of the ingenuity and creativity of artists who have made new discoveries in broadcast, public works, performance composition, sound, and text, stretching the boundaries of both transmitter and receiver. At a time when public access struggles with corporate control of the airwaves, artists have combined activism and communications technologies to represent alternative worlds on the electromagnetic spectrum.