Ive owned my Flex 3000 since 2012.
Ive always used the gui to switch to transmit by clicking MOX.
recently acquired a footswitch but seem to have a problem
I connect the footswitch to the PTT in on the back panel of the Flex.
I depress the switch and all looks well, MOX illuminates on the GUI and I appear to get the typical TX display.
However there is no output when speaking into the microphone its almost as though the mic is muted. There is no RF output.
If I click MOX on the GUI with the mouse everything works as it should.