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Re: [TenTec] TT and the rest of us...

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] TT and the rest of us...
From: Steve Hunt <steve@karinya.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 21 May 2009 11:54:48 +0100
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Can I correct one common misunderstanding about low-pass L-network tuners.

The two network configurations (shunt C at the output, or shunt C at the 
input) do not correspond to Hi-Z and Lo-Z loads, despite the labelling 
you often see on the configuration switch. If you don't believe me take 
a look at a Smith Chart and see which areas need each configuration. As 
an example, a load of 2+j10 needs the shunt C across the load - that's 
the so-called "Hi-Z" configuration!

73,
Steve G3TXQ

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