Amazing.

I'm going to save this, in case it comes up at a party.

Thanks.

On Sun, 13 Jul 2003 19:58:11 +0400, "John Doty" wrote:

In article , "Dave"
wrote:

Is this Smith Chart stuff? (You must forgive me, I am a primitive.)

A Smith chart is a way of graphically relating impedances to reflection
coefficients. The code that made the plots on the web page did the same
sort of calculations numerically. The plots themselves are semilog
Cartesian coordinates, not Smith charts.


On Sun, 13 Jul 2003 12:21:23 +0400, "John Doty" wrote:

In article , "Dave"
wrote:

We are not concerned with the characteristic impedance of the wire
antenna. We are concerned with its RF impedance as an antenna, not a
piece of metal.

The characteristic impedance is where the center of the antenna's
impedance spiral is. That's a good choice for a matching impedance if
what you want is a broadband antenna.

See: http://www.anarc.org/naswa/badx/ante..._longwire.html