Will,
Note that the QCX+ rev 1 has the PTT signal on the TIP, and the others, including the QDX, have the PTT on the RING of the 3.5mm jack.? If you are using the same cable as a rev 1 QCX+, then it will not work.? Try a stereo extension cable.? That worked for me.
73
Evan
AC9TU
