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This is the antenna tuner RF schematic
This is the basic schematic of the tuner. I built
it series L and shunt C in order to get maximum harmonic reduction. The
upper relay switches the capacitor (s) between the radio and the
antenna to allow tuning of high or low impedance loads. The lower relay
switches in the larger capacitor when it is needed to match for low
frequency or a low impedance load. You can cover the entire 20 or 15
meter band with one setting of the controls.
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Comments? Email me - jim (at) jimdaldry.com