Hi Chris - thanks for the reply and the schematic.
?However, I'm not understanding why, if I want to verify that QMX is actually grounding the tip of the plug when I transmit, can't I simply put my VOM across the two wires at the end of the cable plugged into the PTT jack of QMX? It should go from an open circuit to a closed circuit, yes? Is there something strange about that jack / connection that I can't see?
--
Jim / K7TXA
Eagle, ID
SKCC 10447T
BUG 301
