"Cecil Moore" wrote in message
. com...
Reg Edwards wrote:
And the same applies to impedance Zo and attenuation.

How much could the Z0 vary for "50 ohm" coax?
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For coax, Zo = 60 * VF * Ln( D / d )

So Zo varies as VF varies.

You'll just have to measure VF or Zo.

Similar for attenuation.
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Reg.