Interesting.

The manual for my radio calls for pin 2 to be used for the mic ground. A
friend at the airport has a later version and his has pin 2 open. I may ask
him to loan me his radio (since it's not installed in his project yet) for
troubleshooting and I've asked Graham at Microair in Australia for guidance
on wiring.


wrote in message
...
Does anyone know the negative effects of connecting the mic ground to
power ground instead of pin 2 on this radio?

None: According to the M760 manual Rev-P that is how it's supposed to be
done. I recall hearing from the repair shop that either is okay and to use
what's easiest for your installation.