A couple of years ago I experimented with adding a real-time FFT 
waterfall display to my home brew data logging and display program.  I 
got the waterfall working just fine but there is something wrong with 
the FFT calculation that I never got around to debugging.  The current 
discussion may motivate me to take another look at it.  If I manage to 
get something working, it wouldn't be much additional effort to adapt 
the code into an independent program that would take PSN files as a data 
source.

Larry Conklin
Liverpool, NY
lconklin@............
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