Estimate antenna element lengths for 1/4, 1/2, and 5/8 wave antennas.
Approximate Element Length
6.38 inches
Full wavelength: 25.52 · 1/4 wave factor 0.25
Lengths are approximate and assume free-space. Real antennas are affected by element diameter, nearby objects, and ground plane. Use as a starting point and tune with an SWR meter.
These tools provide estimates and general information for educational and planning purposes. They do not replace FCC rules, official licensing information, equipment documentation, or professional engineering advice. Always operate within applicable laws and regulations.