What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

To calculate the approximate length of a half-wave dipole in feet, use the standard formula: 468 divided by the frequency in MHz. Plugging the given frequency into this equation gives 468 / 3.550 MHz, which equals approximately 131.83 feet. This rounds to 132 feet. The distractor 263 feet is what you would get if you accidentally calculated a full wavelength instead of a half-wavelength.