Mininec Resonant Frequency

For my antenna modeling code pymininec (which is a Python re-implementation of the original Mininec Basic-code) I was researching why the resonant frequency computed by Mininec is always a little too high (so the real resonant frequency is slightly lower than simulated and to get the correct higher resonance frequency, wires need to be cut a little shorter than simulated by Mininec ). This means…