Calculator - Vertical Antennas
Use At Your Own Risk
Maple Leaf Communications assumes no responsibility for material calculation errors or other deficiencies in the calculator offered here.
Installed antennas can be affected by buildings, trees, mast properties, other antennas, ground conditions, and more.
Dimensions reported by this calculator should be considered only approximations of the length(s) of material required.
When ordering materials and building your antenna, allow a little extra length and trim as necessary instead of building and installing the antenna before discovering that it is too short.
Ground-Mounted Verticals
Verticals are popular for the low take-off angle of their transmissions, which improves DX reach. They are often practical solutions for urban properties, especially for lower HF bands, but typically have higher noise levels than horizontally-polarized antennas.
Various antennas from a quarter-wave to a full-wave vertical can be calculated below. Remember that ground radials of at least 1/4-wavelength for the frequency of interest are required to get good performance.