Roy,

No I have not decoupled the feed from the antenna. I will try that tonight. I
have wound a 2:1 balun for testing. (anticipating at least a 25 ohm input
impedance)

I have measured the antenna with two different instruments. One is an Autek
analyzer at the antenna, the second is with an 8405a at the end of 100+ feed of
cable. They both show the same results.

Thanks - Dan

Roy Lewallen wrote:
dansawyeror wrote:

. . .
The question is: What is the basis of the difference between predicted
and measured values?


1. Have you decoupled your feedline? If you're not using a feedline,
have you decoupled your measurement device?

2. Have you substituted a lumped impedance of about 16 + j133 ohms for
the antenna and observed what your measurement equipment indicates?

Roy Lewallen, W7EL