Calculator for Medium Wave (MW) Radio Coil

This calculator will find the value of the medium wave (MW) radio coil required for building a ferrite rod antenna given the value of the variable capacitor. Since variable capacitors are expensive to buy, and coils are always something we can build easily, it makes sense to have a calculator that helps us determine what the value of the coil should be for any particular variable capacitor. In this calculator, you enter the maximum value of the variable capacitor in picofarads and it will calculate the inductance value of the required coil in Henry. Once you have this value, it is easy to build the coil and measure its value using an inductance meter.

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