Jim Kelley wrote:
Given that the speed of light is roughly 3 x10^8 meters per second, and
it would ordinarily take less than a nanosecond to traverse the 10",
it's not *THAT* unbelievable.

It is unbelievable for a device with a VF of 0.04
Do you understand how to include VF in a calculation?

The delay would depend on the series
inductance and shunt capacitance of the coil. What are those numbers?

All of those factors are included in the calculator at:

http://hamwaves.com/antennas/inductance.html

Tom's coil is 100 turns, 50.8mm coil diameter, 254mm long,
wire diameter of 1.024mm, and frequency = 4 MHz.

With a wavelength of 75m, exactly how does one obtain a
3 nS delay when the propagation factor is 2.12 radians/meter?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com