Just a heads-up to others... When my RAM3 mike had a
water intrusion problem, I contacted Standard Horizon support.
Service was great!
Did you know that there is a fuse in the
radio that can blow if the Ram3 mike is plugged in with the
radio on???? Since I upgraded to this radio last year, the routine was to fire up the nav
instruments and radio, turn on the
GPS, and
plug in the
remote mike. Apparently I was lucky not to blow the fuse...
THIS IS THE WORST PART... the fuse is internal and not a user replaceable part.

.
This info came from Juan in the S/H customer support center.