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Automatic antenna tuner using an Arduino

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Published on Oct 23, 2011

Ok, this is just a concept, I just wanted to show how the Arduino could be useful for radio amateurs. The SWR meter (in the back) is hooked up to the Arduino, also a servo is attached which drives a capacitor. This capacitor forms a simple L-tuner, together with an inductor which you can't see on this video. The Arduino does a full sweep on the capacitor while measuring the SWR. It stores the position with the lowest SWR and after the sweep it rotates the capacitor to that position. Mind the SWR meter (right needle) while the capacitor is rotating!

Details, pictures, schema and code: http://ernest.utreg.net/?page=arduino...

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