Hi Dan

I'm also interestd in this as we are installing a c80 at helm with
raystar and a Ray 435 at navstation. The 435 has its own passive
antenna for the rail

my thoughts were using the C80 as the primary with radar at helm and
the ray 435 as a stand alone backup at nav station. The 435 will also
provide NMEA out for my ICS navtex and Ray 54e vhf. This way the only
down sides I can see is having two antennas at the pushpit rail.

and I like the idea of backups in case of a problem on one system

Thanks

franky