John,
Have you read my post above?
I only use the standard RB antenna when I am using RB away from home. My normal antenna is the BS1100 external antenna originally used with my SBS-1. I'm sure that there are many other RB users with external antenna's.
Before I started using this antenna, my RB antenna was outside on the Velux window in all weathers! I don't know where you got the figure of 40 problems - AirNav quoted 10 in their earlier email.
I hope you get your RadarBox back soon, we miss your screenshots :-)
All the best
Allocator