Cecil Moore wrote:
John Popelish wrote:
We are not talking about L, C, R, or any other inherent property
changing with frequency.

The velocity factor of the coil is based on those quantities
and can be calculated.

I am not familiar with the velocity factor of coils.

The velocity factor of a transmission line is based on those
quantities and can be calculated.

Not quite. The velocity factor in transmission lines is based on
ratios:
capacitance per length, and inductance per length.

Where do you get the equivalent length numbers when dealing with semi
lumped inductors?

Freq 1 2 4 8 16 MHz
Delay ___ ___ 3 ___ 16 nS

That looks non-linear to me. How about you?

Definitely nonlinear, just like impedance is very nonlinear as the
frequency passes through any resonance.

Care to fill in the blanks above?
(snip)

My guesses at those numbers without a well tested method are as useful
as yours.