On 12/13/2011 2:47 PM, Ian White GM3SEK wrote:
> The reduction in loss is almost entirely due to increase in the diameter
> of the center conductor (because that conductor has the largest current
> density and hence the highest skin effect losses). The foam dielectric
> is merely something that*has*  to be used to compensate for the thicker
> center conductor, in order to keep the same characteristic impedance.

Exactly!

Jim
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