Antenna Calculator


  1. This calculator does NOT utilise Javascript to calculate the antenna lengths.
  2. This calculator provides the length in FREE SPACE. It does NOT take into account the variables in antenna design (e.g. height, diameter of wire, etc.) These usually REDUCE the length (by a factor of 0.96 to 0.98), so the following calculations should get you close enough to allow a final trim for best VSWR.