This tool helps you calculate the optimal length for your dipole antenna based on your desired frequency.
How to Use the Dipole Antenna Calculator
This dipole antenna calculator helps you determine the optimal lengths of half-wave and quarter-wave dipole antennas based on the input frequency. Simply enter the frequency in MHz, velocity factor (optional), and initial gain (optional) to calculate.
Steps to Use:
- Enter the frequency in MHz in the designated field.
- Optionally, enter a velocity factor (default is 0.95).
- Optionally, enter the initial gain (default is 2.15 dB).
- Click the “Calculate” button.
- The calculated lengths for half-wave and quarter-wave dipole antennas will be displayed.
How it Calculates:
The calculator uses the speed of light (approximately 299,792,458 meters/second) and the entered frequency to calculate the wavelength. The velocity factor adjusts the wavelength to account for the medium’s properties. The resulting wavelength is then divided by 2 for the half-wave length and by 4 for the quarter-wave length.
Limitations:
- Input frequency must be a positive number.
- Velocity factor should be between 0 and 1.
- The calculation assumes a vacuum for the speed of light unless modified by the velocity factor.