What are vertical antennas?
The vertical is a popular antenna among hams who lack the space for a beam or long wire antennas. In an electrical sense, a vertical is a dipole with half of its length buried in the ground or “mirrored” in its counterpoise system.
Do vertical antennas need radials?
Installing a radial system is a must for any quarter-wave vertical antenna system. Without one, a vertical antenna is only half complete. The radials are the second half of the antenna, just like there are two elements to the common dipole.
What is the impedance of a vertical antenna?
Basic quarter wavelength vertical antenna Then at the base of the antenna at the feed point, the voltage is at a minimum and the current is at its maximum. This gives the antenna a low feed impedance. Typically this is around 20Ω. The ground is obviously an important part of the RF antenna.
What is the gain of a vertical antenna?
5λ/8 vertical antenna gain When used as a vertical radiator against a ground plane this translates to a length of 5/8 wavelength. It is found that a five eighths wavelength vertical antenna has a gain of close to 4 dBd, i.e. 4 dB gain over a dipole.
Does a vertical antenna have gain?
Vertical antennas include: Using this antenna, more power is radiated at a low angle of radiation, enabling gain to be obtained in the required plane.
What is this ZeroZero-five antennas?
Zero-Five Antennas is advertizing a “Groundplane 17 through 80 meter multiband vertical, (new for 2010), designed for hams that do not have room for ground radials.
Is zero-five 43’antenna any good?
I bought a 43′ Antenna from Zero-Five in 2010. It has worked great and if I could have only one antenna, this would be it. Recently I started having problems on 80m.
What is a 10-80 meter vertical antenna?
The 10-80 meter groundplane vertical antenna is a rugged multiband vertical antenna, That is 43 feet in height. This vertical antenna has no lossy traps or coils to burn out.Super wide bandwidth… The 10-80 meter groundplane vertical antenna is a rugged multiband vertical antenna, That is 43 feet in height.
What size antenna for a 40 meter vertical?
I give 43′ Verticals in general based on my findings; a solid 2 as a multi-band antenna and a 4 as a 40 meter antenna. I hope you find this useful.