I have a FT-2400 that I am trying to interface to a computer for an
echolink access. The manual says that Pin 3 on the Mike jack is PTT and
Pin 5 is ground. I constructed a transister switch to pull Pin 3 to
ground and go to transmit when DTR goes high It doesn't work, although
I can measure that with a DTR Voltage on the switch, it goes to ground.
As a test, I made a jack with Pin 3 looped to Pin 5. If I insert it in
the jack, the rig still stays in receive. What am I missing?
John / WA1JG
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