Re: Difference between 1/2 wave and 1/4 wave resonance ? ? ?

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

Original poster: Jim Lux <jimlux-at-earthlink-dot-net> 

At 05:52 PM 1/12/2004 -0700, you wrote:
>Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
>
>Does anyone have how to calculate from an RLC circuit, both the 1/2 wave
>and 1/4 wave resonant frequency?
>
>A simple parallel resonant circuit Fres = 1/SQRT (L*C).  Now is this
>technically a 1/2 wave resonant frequency of
>this parallel resonant circuit?
>
>Any help appreciated in this confusing matter.

You might want to look for and download the XLZIZL spreadsheet.. it does 
transmission lines and lumped elements, up to 5 in a row, and is quite 
nifty to fool with. You can give a list of frequencies and load R and X, 
and it calculates the R and X at the other end (as well as a host of other 
things, like plotting smith charts, etc.)

It's from Dan Maguire at http://www.qsl-dot-net/ac6la/xlzizl.html

Very, very cool, and free to boot. (and, all the source code is visible, so 
you can cut/paste/hack to your heart's content)