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Old November 20th 14, 08:54 PM posted to rec.radio.amateur.homebrew
[email protected] jimp@specsol.spam.sux.com is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 1,898
Default Transistor output stages?

gareth wrote:
One question; why the predominance of a multitude of bandpass
filters on the output of TXs? Why not a tuned circuit, along the
lines of valve PA stages, once the impedance level were to be raised?


A bandpass filter IS a tuned ciruit and there is usually more than
one since a single, effective filter that covers 160 to 10 meters
is very difficult, if not impossible, with LC circuits to achieve.



--
Jim Pennino