The “Cardboard” Variable Capacitor as built in this article will yield a cap in the range of about 300 pF Max. Increasing it to 7″ will get well up to 370 pF. It is build of readily available material found around the house (some at the hardware store).Link
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The “Cardboard” Variable Capacitor as built in this article will yield a cap in the range of about 300 pF Max. Increasing it to 7″ will get well up to 370 pF. It is build of readily available material found around the house (some at the hardware store).Link
