What is the approximate length of the driven element of a quad antenna designed for 14.3 MHz?

A quad antenna's driven element is a full-wavelength wire loop, typically arranged in a square. To find the total length of a full-wavelength wire loop in metres, you use the standard formula of 306 divided by the frequency in MHz. Using this formula for the given frequency: 306 / 14.3 MHz yields approximately 21.40 metres. This total length represents the perimeter of the loop. Remembering that quad and delta loops are full-wavelength antennas is crucial; applying a half-wavelength formula would give you an incorrect wire length that is exactly half of what is required to resonate properly.