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[AMPS] Power out indicator

To: <amps@contesting.com>
Subject: [AMPS] Power out indicator
From: W8JI@contesting.com (Tom Rauch)
Date: Mon, 18 Feb 2002 21:27:05 -0500
> The tuner for the British Army D11/D13 tx's could certainly do it. 
> 
> I've seen it in a Z match, too. Not often - depends on the load. I
> don't like the Z match anyway.

With a reasonable load connected? No way!

Perhaps you are confusing an unwanted self-resonance in a roller 
with the tuner "loading into itself".
 
> >What does happen is there is a smooth and gradual reduction in 
> >efficiency as the Q is made higher,
> 
> Especially in a Z match - which is why I don't like it.

The reduction in efficiency is so gradual and slight no one would 
ever notice. Long before the power drops substantially, a 
component will fail. Unless you are running less than a few hundred 
watts into a tuner capable of a few kilowatts when properly tuned. 

People just need to learn to use the maximum possible 
capacitance that allows a match in a T network. That really is 
pretty simple.
73, Tom W8JI
W8JI@contesting.com 

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