[NLRS] Duct thickness @ 10 GHz

[Jon Platt]

OK, question #2.  Assuming a refraction index that produces ducting, how
thick does the duct need to be to propagate a 10 GHz signal ?   Yes, much
thinner than 2m.

My guess, and its just that, a pure guess, is that if you need a duct
thickness of about 400m or so at 144 MHz, then a duct may only need to be
about 10 to 20m in thickness to propagate a 10 GHz signal.   Maybe a little
thinner.  Anyone else have a better number ?

73, Jon
W0ZQ