[ARC5] North American O-47 at NASM still has her radios

[Mike Morrow]

> She has a BC-307A transmitter, BC-224 receiver and a BC-310 radio compass 

That's a combination of gear representing three of the biggest names
in aircraft radio in the 1930s:

BC-224-A  RCA
BC-307-A  GE
BC-310    Bendix

Mike / KK5F