[un/loquer] Spark-gap_transmitter

[kalashnikov]

http://en.wikipedia.org/wiki/Spark-gap_transmitter

https://www.youtube.com/watch?v=XDWkvx1DWHg

http://www.alexander.n.se/

http://www.bobsoldphones.net/Pages/Essays/Hughes/Hughes.htm

http://noisejunk.eu/index.php?page=instruments&instrument_id=27
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