Think of the antenna and everything connected to the ground terminal of
the KAT100 -- including the counterpoise -- as an off-center fed antenna.
When you removed the counterpoise, you moved the feedpoint. This changed
the impedance seen by the KAT100 ... 73, Vic, K2VCO
Thanks Vic, I get it now: the method that I am using is valid only when the
antenna is 1/4 wl or less. Since my EFW is 86 feet, it would only
be useful trying this comparison on topband where a 1/4 wl is roughly 125
ft. It was suggested off list that my best bet overall is to employ the
use of a field strength meter. Perhaps it is time to invest in one!
73,
Mychael
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