Dear Joe,
This is just a guess based on how the Johnson KW matchbox is designed (which
doesn't even cover 160), but I think it is safe to say that many link
coupled designs use a tap on the link coil for changing the coupling rather
than using a capacitor.
73 de W9DMK - Bob Lay, Dahlgren, VA
http://zaffora.f2o.org/W9DMK/W9dmk.html
w9dmk@crosslink.net
----- Original Message -----
From: "Joe Giacobello" <k2xx@swva.net>
To: "towertalk reflector" <towertalk@contesting.com>;
<antennas@mailman.qth.net>
Sent: Saturday, March 18, 2006 12:32 PM
Subject: [Antennas] Link Coupled Tuner Question
>I am considering building a link coupled tuner for 160M. I am checking out
>components by crudely "bread boarding" with clip leads on the bench using
>fixed resistors for loads. Although I am able to get to a 1:1 SWR, I am
>observing that the series link capacitor seems to have very little effect
>on the SWR. I am using a 500 pF variable paralleled with about 2000 pF of
>fixed capacitance for the series capacitor. Is this relative insensitivity
>for the series link typical?
>
> 73, Joe
> K2XX
>
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