I'm trying out a Mizuho MX-7S QRP HT with PSK31, but I need a simple circuit to
key the PTT. This rig has a "Speaker" and "Mic" output, the sleeve of "MIC"
being PTT.
The schematic of the radio is here:
http://www.flickr.com/photos/jonathancharles/4076077872/
I would like to use my Jornada 720, but also have a laptot, a Lenovo Windows XP
machine with USB ports, but no RS-232 port.
For a beginner, I know how the audio components get to and from the rig, but
how do I key the transmitter?
Presumably I will use Pocketdigi or Digipan.
Thanks,
Jonathan KC7FYS
