HF/6M Antenna Tuner Preselector and Antenna Switcher
Antenna tuner HF
By Guy, de ON6MU
revision 4

RE-AT1HF6 Schematic fig1

Parts list


Revision 2 notes:

Revision 3 notes:

Revision 4 notes:


original prototype

revision 2

Inside HF/ 6-meter tuner matcher

All revisions

This is how Herman PA3EHZ made the tuner:

click images to enlarge
Thanks Herman for the pics!

If you elect to use an antenna tuner, it is extremely important that you understand exactly how to use tuners and what they can and cannot do. A few watts of RF can easily become lost in an incorrectly adjusted antenna matching device. I cannot overemphasize the priority of a clean, efficient connection of the amplifier output to a resonant antenna.

Here is another tuner based on this design, but smaller for portable useage:

Don't forget to check these out:
.ON6MU Homebrew projects
.Radioamateur related projects

.ON6MU Ham mods
.Modifications of transceivers