I know this subject has been covered before but I'm reading a couple of
pieces of conflicting info on the web so I want to be clear so I don't
smoke anything on my rig. I have a homebrew 50 watt amplifier built
from a PCB/ parts kit. The amp appeared in QST several months back as
the winner of the 2nd Homebrew Challenge. It has a COR circuit which I
have been using successfully but I want to go to hard PTT control by the
rig. The amp keys by grounding the PTT. I have a switch wired in to
select between the COR circuit grounding the PTT or an external source
doing it via a 1/8 inch phone jack. I just need to wire pin 3 of the
Flexwire connector to the center of the phone jack, correct? Or do I
need to add another relay in the circuit? I also see mention of a diode,
where would this go, across the 1/8 inch phone jack?
Tnx and 73,
Michael, W4HIJ
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