In article ,
Commodore Joe Redcloud wrote:
Some navaids are lighted. The pattern of the light going on and off can help
identify which navaid you are looking at. There are three general "types" of
patterns. What are they, and include a description of each.

Are you talking about color, period, and phase or are you talking
about iso, group, and occulting?

There's also fixed and alternating color.

--
"j" ganz @@
www.sailnow.com