Tom Donaly wrote:
It could be worse, John. He could claim that his loading coil replaces
a certain amount of period (time) in addition to length.

The percentage of a wavelength that the loading coil
electrically occupies is directly related to the delay
in time through the loading coil.

At 4 MHz, 36 degrees (0.1 WL) of loading coil equates
to 25 nS of delay through the loading coil.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com