Owen Duffy wrote:
Have it your way Cecil...

I hope you now see the advantage of being able to vary the
length of the ladder-line until a current maximum point is
located at the choke-balun. Knowing the impedance is purely
resistive and relatively low allows me to read it with my
MFJ-259B. That resistive point is on the ladder-line SWR circle
on the Smith Chart. An arc of the SWR circle is the known length
of the feedline which gives me the feedpoint impedance of the
antenna (and can be adjusted for losses).
--
73, Cecil http://www.qsl.net/w5dxp