Will,?
I am sorry to hear that PA is dead.?
The PA bias is needed to be adjusted as per assembly manual, so just a bit back from the finals to conduct.? To be class C amplifier.? No matter what the RF drive is QCX or QDX.? However the input power to this PA is different for different modes.?
But the puzzle is how the PA was working good with the QCX, where the maximum output current of a 74ACT00 in PTT line is 75mA.
73 Bojan S53DZ
