I heard some one say that a balanced tuner is very expensive to build. I used
some quarter inch copper tubing from the hardware store to build a four inch
coil. This is the tubing for a ice maker. I then built a four inch coil and
tapped it to a multi position switch from radio shack. I had a used large old
condenser and hooked the whole thing up in a L network design. I left the
ground connection floating on both input and output and connected it directly
to ladder line. A current balun was made out of 25 ft of coax and put at the
input of the tuner. Works great on my 330 ft loop. No second coil is necessary.
Everything is balanced and nothing heats up. Kind of ugly looking, but the
electrons don't seem to mind.
Bruce k2pdj
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