Michael, AA1TJ, has had more contacts with his voice-powered DSB rig. (Scroll down a bit for a look at the schematic and more comments on this amazing project.) Michael has posted two recordings of his signal (as received at distant stations). When I played these files, Ubuntu showed one of those semi-psychedelic groovy “visualizer” displays, complete with oscilloscope-like patterns; the signal looked FB Michael!
Have a listen: http://mjrainey.googlepages.com/elsilbo


Reading at the circuit diagram is bad for the head. I keep looking for the power connection… This is astounding. The only similar thing I’ve found over the years is a Japanese OM who did this – http://www.intio.or.jp/jf10zl/plam.htm – Similar, but not as elegant. Blessings, Pete G1INF http://g1inf.blogspot.com
The audio samples are eerie; remind me of those audiograms recorded back in the 1860s…you know, the woman singing the French folksong snippet…