Re: RF question

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
 >
 > Hi Chris,
 >
 > I think these are near field affects and field intensities drop off much
 > faster with distance than with far field affects.  The radiation efficiency
 > without an antenna at say 100KHz is pretty low.  1/4 wave length at 100KHz
 > would be about 750 meters.
 >
 > Gerry R

	The radiation efficiency without an antenna would be tiny.  The
secondary inductance is far, far too high to resonate with anything
approaching a quarter wave antenna.  The VHF radiation power from the
primary leads will be much greater.

Ed