Original post segment:
>Don, all you say is correct and good. BUT (seems there always is a but), as
a practical matter, the input R+j of an amplifier >varies with drive level
and usual test equipment will not provide useful data. If you drive it with
a transmitter there is no way >to extract R+j data at that power level.
Unless you are really rich and can afford an operating impedance bridge (AKA
"OIB") like AM broadcast stations use.
Clearly overkill for hams I would say.
Maybe MFJ will make one at the right price point. <gg>.
Chris, AB6QK
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