On Mon,7/4/2016 7:37 PM, Richard (Rick) Karlquist wrote:
Where people get into trouble is when they are
driving some wire antenna over many octaves of bandwidth
and the impedance is all over the place (not to mention the
antenna pattern).
YES! They look at the TX output, see 50 ohms, look at the Zo of the
line, see 450 ohms, and think those are the impedances they are
matching. Nope -- the Z on the secondary is the wildly variable
feedpoint Z of the antenna at the operating frequency, transformed by
the length of the line, which varies as a function of frequency.
73, Jim K9YC
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