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Re: Topband: Ladder line + tuner

To: <topband@contesting.com>
Subject: Re: Topband: Ladder line + tuner
From: "Paul Christensen" <w9ac@arrl.net>
Date: Mon, 21 Nov 2016 06:58:19 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
> "I second TLDetails.  TLW, not so much."

TLW also contains a powerful tuner modeling tool, allowing for the quick
design of hi-pass-L, lo-pass-L, and T networks.  Once the complex line input
Z is calculated by TLW, the result can be input into the tuner model to
transform the complex Z into 50+j0.  

For T network designs, TLW can compute C-L-C values based on desired phase
shift through the network for use with phased antenna systems.  It's worked
so well that I can dial-in component values with a LCR analyzer, insert the
network into the transmission line and not require further adjustment.

Paul, W9AC  


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