Richard Harrison wrote:
100 turns of wire on a 2-inch form requires about 52 feet of wire.

52 feet of wire on 4 MHz is 0.21 WL. Dr. Corum says anything
over 0.17 WL requires the distributed network model.

The 3 nS delay measured by W8JI through that coil is simply
technically impossible except in his mind.
--
73, Cecil http://www.qsl.net/w5dxp