almostthere wrote:
Just got my ticket and I plan to purchase a handheld Nav-Comm for back-up
but it is said that they're useless at altitude without an external antenna
connection. What connector do I use (BNC?) and how do I go about doing this
on rented C172s? Any alternatives/suggestions? Thanks in advance.

My handheld has been used from 6 miles out with no external antenna and
worked just fine.