Re: Fw: 1/4 wavelength

In a message dated 1/7/99 3:19:20 AM Mountain Standard Time, tesla-at-pupman-dot-com

>  I have a question about secondary windings. According to a chart I found
>  from Chris Hill, a 4" diameter secondary has 774 
>  feet of wire to make the coil.  However the given resonant frequency is 540
>  khz.  According to a different web page I found, 
>  the length of wire in a secondary should equal the 1/4 wavelength, which
>  for 540 khz is 454 feet.  what gives? Am I missing 
>  something here?  any info much appreciated.  markjons-at-bright-dot-net
For the quarter wave freq., the 454 feet is correct.  To way too many digits,
the equation would be Q-wave freq = 245892.764/feet of wire.  Results in kHz.