Écoute d'ondes radio militaire.
https://github.com/studiomrb/kilohertz-berlin
https://github.com/studiomrb/kilohertz-pikselnorway2016
http://martinreiche.com/project/kilohertz/
via https://media.ccc.de/v/33c3-7978-surveilling_the_surveillers
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