Cecil Moore wrote:

Jim Kelley wrote:
Maybe it's a half wavelength long? ;-)

For a real-world air-core coil to exhibit identical currents at the
input and output, it would have to be one wavelength long, lossless,
and non-radiating. That's a pretty tall order just to support an
old wives' tale. :-)

I happily stand corrected.

73 de jk