On Sat, 3 Sep 2005 09:27:52 -0500, "hasan schiers"
wrote:

Question: Where was I taking my measurements.

I started out at the actual feedpoint...then put in about 55' of LMR-400,
and started a new set of measurements in the shack. Here is the latest data:

Radials 2:1 Fo 2:1 BW Z VSWR @ Fo
0 3340 3522 3920 580 36,0 1.3

Ok, you have figured out the coax transforms the impedance. If indeed
the Z at the generator end of the coax was 36+j0 (ie it was resonant
at that point), then I make the load Z ~ 62-j5.

This will confuse your efforts to infer an effective ground system
impedance, and losses.

Another point to consider, instruments like you are using (in my
experience) are more accurate near to 50+j0, and you may get better
results by bulking up the feedpoint Z with a known fixed resistor to
exploit the better measurement accuracy around 50+j0.

Owen
--