Richard Harrison wrote:
The wavelength of a line is the distance a wave must travel for one
complete cycle (360-degrees). If you want the phase shift for a line,
take the length of line required for one degree of phase retardation and
multiply it by the length of line you have.

If you want to know the velocity factor of a piece of
transmission line, the easiest thing to do is find
its first self-resonant frequency. A little math
will yield the VF which allows prediction of the
phase shift through any reasonable length of
tranmission line.

If you want to know the velocity factor of a coil,
the easiest thing to do is find its first self-
resonant frequency. A little math will yield the
VF of the coil which allows prediction of the
phase shift through any reasonable length of coil.

Not disagreeing - just expanding.
--
73, Cecil http://www.qsl.net/w5dxp