have a couple of questions. First, are any blocking caps or otherNo
or can I just wire straight to the mic connector?Yes
Secondly, would it be a useful thing to wire out the discriminatorIf you look at a mDin6 connector pin out and the ALSA controls you will
see you can control selection of discriminator (9600 baud) or audio
(1200 baud) out. You do NOT need an SPDT switch.
mDin 6 pin 4 is discriminator out
mDin6 pin 5 is audio out (premphasis/demphasis)
Note: some radios will tie these pins together.
IN1 selects discriminator routing
IN2 selects audio ((premphasis/demphasis) routing