Rolf,
I am surprised that it is 0.5 X max circumference.
Is this for the entire length?
When the A class had tapered mast I thought they calculated the taper.
If not this would disadvantage the Stealths.

Is your F16 mast tapered?

Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!