I thought most coax was right around 30pF per foot,
regardless of size--the characteristic impedance is
sqrt(L/C), and inductance is a weak function of wire
diameter. So I don't think it'd matter what type of
dieletric, at least not too much.
Shawn KB1CKT
--- Stuart Rohre <rohre@arlut.utexas.edu> wrote:
>
> The capacitance of coax per foot is pretty high, due
> to the solid
> dielectric; it might be interesting to analyze the
> same run of coax, if it
> were made of air dielectric coax cable.
>
> Stuart
> K5KVH
>
Shawn Upton, KB1CKT
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