Here are some simple antenna calculators
Simple Dipole Calculator
A useful and fundamental measurement in radio antenna work is the "half wavelength". We must know how to calculate it. It gives the desired physical length of an antenna for any operating frequency.
Enter the Desired Centre Frequency in MHz
Total overall length of the
dipole will be
Each leg of the dipole will
The half-wave dipole is one of
the most important and commonly used antennas and is very simple to construct.
The length of a dipole is the main determining factor for the operating frequency.
Simple Vertical Calculator
3 element beam Calculator
Simple J Pole Calculator