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...

H-Quad Loop (10-80m) will tune and work for 10/15/20/40/80 meters.!!! This ant. is ONLY for standard Ham Bands, NO Warc Bands and 11 meter Band.!!!! These Omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usuall...