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And that is only on the OUTSIDE surface of the shield.

 

As far as the diameter for winding coax, I figure 4" diameter (not radius) for RG58, 5" for RG8X, RG6, RG59, etc., and 8" for RG8, RG213 and LMR400.  Those are figured using 10 times the cable O.D. for radius, and then multiplying by 2.  I guess you could just use 20 times the O.D. :ohmy: .

 

That's the way we figured it in the Navy, only they use a factor of 13 rather than 10.