Hello Hans and Hari
When you insert a 3.5mm plug into the PTT terminal, pin2 and pin4 of X201 will be disconnected. And the tip of the plug only contacts pin2.
Pin2 is not connected anywhere on the PCB.
The PTT control is connected to pin4.
I connected pin2 and pin4 with a jumper wire and confirmed that the PTT control works properly.
?
I think the circuit and pattern will need to be modified in the next PCB revision.
?
(I'm using Google Translate, so I'm sorry if the translation is weird)
?
73
yuji JJ1GPM
