Coaxial characteristic impedance calculator.

With the conductor sizes (diameter of the inner and outer conductors) and relative permittivity as parameters, this tool calculates not only the coaxial line impedance but also the capacitance and inductance per meter, the RF cutoff frequency and the length of a 1/4 wave transformer sub taking into account the velocity factor.

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WinRFCalc, the best RF calculator toolbox for Windows