EMI spectral speculations was Re: Faraday Cage and 1/4 wavelength sized holes

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>


 >
 > >If you figure that the spark's duration is on the order of a few tens of
 > >nanoseconds, then the spectrum could easily extend up into the hundreds
of
 > >MHz range.
 >          I'd think the edges would excite random bits of wire
 >
 >          further up.

The edges aren't all that fast... limited by the inductance of the topload
and the spark itself (1 uH/meter, give or take)...