It Flames !
I saw a mention of flame rectification on the PIC list, looked on Youtube and sure enough, a flame TRF radio:
source: https://www.youtube.com/watch?v=jXRtLhuYcIo
But even neater, a video of a flame triode:
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source: https://www.youtube.com/watch?v=WNl0sFViaxs
The CPO at the end ( where he sends: V DE K7NS V V ) is both very cool and hot at the same time !
See more on K7NS's amazing site:
http://www.sparkbangbuzz.com/flame-amp/flameamp.htm
It boggles my mind that Lee DeForest never patented these ideas :)
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm