Slightly Modified version of a guest question sent in by Dhruva Batni.

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Now for the question
Any short wave radio enthusiast will eventually bump into stations which continuously transmit spooky stuff like this. What are these stations called?

Clip 1 [audio:http://www.boiledbeans.net/wp-content/uploads/2009/11/16f157ef3755d49e5ec747fb9554832f.mp3]

Clip 2 [audio:http://www.boiledbeans.net/wp-content/uploads/2009/11/0ac05ff3e5b5073a814cecf507e200da.mp3]

Clip 3[audio:http://www.boiledbeans.net/wp-content/uploads/2009/11/4a9189dd52a1818f2ee8de5c22821bfc.mp3]

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