Re: RF question

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

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
Ft Collins, CO


 > Original poster: "chris swinson" <exxos-at-cps-games.co.uk>
 >
 > Hi Terry, Matt D,
 >
 > I did try a meter of antenna once, though didn't seem to make much
 > difference TBH, unless it has to be a fair bit longer like 3 miles :)  I'm
 > using a SSTC now so CW is a lot more stable for such things. I'm not
 > intending to broadcast with it, I found it "interesting" that it can
charge
 > up anything metal withing a meter of the secondary, including the metal
 > on/off mains switch and the frequency control knob where you can only turn
 > the thing off by the expense of burning flesh :))
 > anyways, I could do with a nice vacation expenses paid by the FCC ;-)
 >
 > cheers,
 > Chris.