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Re: [TenTec] Johnson matchbox tuner,

To: tentec@contesting.com
Subject: Re: [TenTec] Johnson matchbox tuner,
From: w8au@sssnet.com
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 27 Mar 2006 17:48:15 -0500
List-post: <mailto:tentec@contesting.com>
At 01:33 PM 3/27/06, Lee A Crocker wrote:
If you take apart a match box you will see the link
coil is tapped in the middle and at the end.  The
middle tap goes to the coax connector to the rig.  The
end tap goes to the Recieve terminals through the
relay.  I put a switch so I could switch between the 2
taps, the middle and the end.
It extends the match in some circumstances.

The extra link winding for receiver was to match 300 ohms, which
a lot of receiver inputs were then.

This would allow some variation in Z transformation...maybe
match output Z's of a lower value.

w8au


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