> At resonance, X is not necessarily zero in R +
> only at a minimum. From the MFJ manual (W8JI's words I
> "RESONANT FREQUENCY is where reactance is zero ohms, or in
> cases as close to zero ohms as the MFJ-259B indicates."
That wording is included for two reasons:
The analyzer is susceptible to external voltages. As little
as a few millivolts external voltage can make the analyzer
not read zero.
There also can be calibration problems. (For a period of
time every analyzer was actually calibrated incorrectly.)
Reactance should be zero at resonance but the meter might
not dip to zero fully.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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