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Re: [TenTec] T-New Work settings

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] T-New Work settings
From: Ken Brown <ken.d.brown@hawaiiantel.net>
Reply-to: ken.d.brown@hawaiiantel.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 28 Dec 2009 18:50:28 -1000
List-post: <mailto:tentec@contesting.com>

That's all very nice, BUT -- the Ten Tec 229 and 238 tuners are L-
Network tuners, NOT T-Network tuners. Rather different animals, and the L is a generally better behaved one.
If that was exactly true, there would be only one setting that would work. The 238 is not exactly an L network. It is actually a T network with two inductors and one capacitor. One of the inductors is very small, and in most cases is so insignificant that you can consider the 238 to be just an L network. In situations where the match is already very close on the lower bands, or on the higher bands, either case using very little C, you can find a match with either the big inductor at the input or at the output. This would be Low Z position 1 or High Z position 1.

If this were not the case, Jim's earlier post regarding trying both possible settings would be incorrect. Only one setting could ever work.

DE N6KB

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