Noise Problem. Both Comms Breaking Squelch

Lancair IV-P Flyer wrote:
On Apr 2, 9:26 am, MikeMl wrote:
....
Mike, given this information, what do you suggest I do next to try and
isolate the cause?

Do the static test on the LR3C using the lab power supply I outlined in
the earlier post. You can do it with the LR3C either in or out of the
aircraft! If doing it on the bench, use a 28V 1A lamp as a substitute
for the alternator field.