One-time Oscillation of Airwaves: Tetsuo Kogawa's new radioart attempt
A kind of the backup. Sometimes my SoundCloud account was deleted presumably for the signals which might violate something."
Tetsuo Kogawa's old radioart works
Technological notes:
How to build a MF/MW transmitter used on April 30, 2019
Historical data:
The first International Radio Art Festival (1990, Dublin)
Toward a Definition of Radio Art (1998)   by Heidi Gruntmann and Robert Adrian
A Radioart Manifesto (2008)   by Tetsuo Kogawa