You've come up with a damned good question there
Stallie. And, like everyone else so far, I just wish that I could come up with a damned good answer!
I have an idea that the light spacings in PNG are standardised on 60 metres, but I won't be able to check on that until next week.
Meantime, I'll keep watching this thread to see if anyone else can come up with a "damned good answer"!
