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Old June 5th 08, 06:11 PM posted to rec.radio.amateur.antenna
Michael Coslo Michael Coslo is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 828
Default What effect does a tuner have at the antenna?

Antonio Vernucci wrote:
"Cecil Moore" ha scritto nel messaggio
...
A popular myth is developing that the tuner has no effect
at the antenna feedpoint and the only goal is to make the
transmitter "happy". My question is: if we monitored
only the forward current or forward power at the antenna
feedpoint, could we still adjust the tuner? If the answer
is "yes", the myth is false.
--
73, Cecil http://www.w5dxp.com


If somebody really wrote that "the tuner has no effect at the antenna
feedpoint", there are two cases:

1) either he meant to correctly say that, adjusting the tuner, the
impedance seen at the antenna terminations - or any other antenna
property - does not change (independently of whether the tuner is placed
at the transmitter end or at the antenna end). If so, it is just a
matter of bad wording, and I would be tempted to say that his english is
even worse than my non-mother tongue one

2) or he has a poor understanding of transmission lines and antenna theory


Yeah. This is probably the first time some random poster over at QRZ or
Eham has been wrong! 8^)

- 73 de Mike N3LI -