[GreenKeys] Eric Volpe demodulator board

Ken LoCasale wa4mnt at gmail.com
Tue Jan 14 15:54:54 EST 2025


Gang,

With the great internet rtty feeds that are becoming available, re-newed 
interest in mechanical printers, and Eric Volpe's permission, I have 
made his RTTY PLL Demodulator pcb available again. I retained his 
component designations and board size so his original documentation can 
be used. I added a couple of features that do not degrade from his 
original design and reflect the common components I was able to find 
easily. Hopefully this will result in the dusting off the old Model 15 
in your garage. The cost of the board is free, and the new layout can be 
found on the qrpbuilder.com site at:


https://qrpbuilder.com/volpe-rtty-demodulator-revisited


73, Ken - wa4mnt
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