GP Monopole with 256 Radials HamSphere 4.0 series of Vertical Monopole antennas are essentially 1/4 wl vertical antennas with groundplane radials. This is a classic antenna very commonly used by ham radio operators all around the world. The Vertical Monopoles are omni-directional antennas and are best suited to produces fairly low angl...

GP Monopole with 256 Radials HamSphere 4.0 series of Vertical Monopole antennas are essentially 1/4 wl vertical antennas with groundplane radials. This is a classic antenna very commonly used by ham radio operators all around the world. The Vertical Monopoles are omni-directional antennas and are best suited to produces fairly low angl...

Half Square for 40m with 10ft base height, very good ground. A Simple 40-Meter Half Square Antenna.  Several hams  have used this simple antenna to increase their contacts on 40  meter.  The antenna provides some gain over a single vertical antenna and offers some signal rejection off the sides. The half square...

20m 1/4 wave vertical The 20m 1/4 wave vertical, when installed over a good ground structure, will outperform a 1 /2 wave dipole at 1/4 wave above ground for radiation angles less than 30 degrees. Even a shortened loaded vertical similarly installed, will still outperform 1/ 2 wave dipole at heights lower than 1/4 wave for radiation ...

4-square array monopoles for 80m, very good ground Four Vertical Arrays (The Four Square) Four vertical monopoles are arranged in a square and separated by a quarter wavelength. The antennas can be fed in a number of ways. Generally the front antenna is fed at 180 degrees in relation to the rear antenna, and the two side antennas ar...

4-square array monopoles for 40m, very good ground. Four Vertical Arrays (The Four Square) Four vertical monopoles are arranged in a square and separated by a quarter wavelength. The antennas can be fed in a number of ways. Generally the front antenna is fed at 180 degrees in relation to the rear antenna, and the two side antennas a...