[Elecraft] balanced tuner

[bruce bennett]

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