[Elecraft] RE: balanced tuner

[Ron D'Eau Claire]

Very nice, Steve! 

You can see my homebrew balanced tuner in the picture with my listing on
www.QRZ.com/ac7ac. 

The alligator clips attached to the wires above the coil are for the antenna
feeder connections. There are two alligator clips nearer the bottom that
short out turns as needed. The knob on the end operates a split stator
capacitor directly under the coil. The knob on the front operates the
variable in series with the link to control the coupling. That coil actually
plugs in. It works FB from 80 through 10. I have a larger coil for 160
meters. The coil form is a 2" acrylic tube with four 1/4" tubes glued to it
to space the turns away for easy tapping with the alligator clips. 

The "case" is 1/8" hardened masonite (a pressed wood product) with a 1/2"
wood base and uses aluminum angle for the corner fittings. The top is
acrylic sheet to handle whatever RF voltages might appear between the
fittings. The variable has 1/4" plate spacing for high voltages. It works
very well. 

A PDF file with close-up photos and more details is available at
www.cobi.biz/ac7ac.pdf

Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of list1
Sent: Saturday, August 16, 2008 3:43 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] RE: balanced tuner


Hi All,
Just finished mine.
Works Well so far.
I have some pictures here:
http://www.pituch.net/Steve%27s%20Page/Radio/Link%20Coupled%20Tuner/tuner1.h
tml
or just drill down from:
http://www.pituch.net/
No documentation yet......later.

Elecraft should make it a kit... hi  hi.

Steve, W2MY

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