Knut Aufermann, author of the Radio Art feature in The Wire 320 has compiled, in his own words "a selection of radio streams to listen to whilst concentrating on other things, a kind of audible wallpaper that commercial radio aspires to, but much better."
• Live VLF Natural Radio
A collection of live streams of the VLF band. Beautiful sounds captured from the earth's natural radio signals: lightning strikes from near and far. The station in Todmorden, UK is my personal favourite.
• Ham Radio Live: FM
Repeater "Zugspitze" DB0ZU and "Bussen" DB0RZ
An amateur radio repeater station based on the highest mountain in Germany for trans-alpine communications. Mainly silent with the odd morse code interjection this stream randomly offers insight into the Bavarian psyche, when human voices break in as a reminder that you are legally eavesdropping.
• Knut Aufermann:
online sound installations
47 different loops from sound installations that were broadcast live on various radio stations, often for hours thoughout the night. The sound sources are always mix of electronic, electroacoustic and radio feedback, the latter one happens when a radio transmitter listens to its own output.