Peter Dohm wrote:

Yeah, ya gotta have it span more'n 180° er ya couldn't tell which
direction the observed plane was a goin'..(when it's flyin 90° to your
line of sight)
OOP'S---Logic don work--the BOOK says Red & Green--from dead ahead to
110°toward the stern... White 140° total 70° each side of dead astern...

You KNOW which way it's goin, by the colour of the lite!!

Thanks for the update, I hadn't read it in a long time.

Peter



There's also a spec about the maximum amount of overlap that is allowed.
It's not much.