The whip antenna is a monopole antenna, and like a vertical dipole has an omnidirectional radiation pattern, radiating equal radio power in all azimuthal directions (perpendicular to the antenna’s axis), with the radiated power falling off with elevation angle to zero on the antenna’s axis.
What is the gain of a whip antenna?
These longer antennas have a gain of approximately 3 dBi. At UHF, a quarter-wave whip is approximately 15 cm (6 in) long. Since this length is physically small, some design considerations can be used to increase the gain.
What is a mobile whip antenna?
The APX52 is constructed for land mobile services in the HF band 1.6-30 MHz. It consists of four whip sections and a base assembly. The base assembly is equipped with heavy duty spring coil to absorb shocks and to allow for a semi permanent deflection of the antenna when the vehicle is mobile.
Is a dipole a good antenna?
Another advantage of dipole antennas is they are very efficient when used at their resonant frequency. … Height also matters—the higher the dipole, the better. Ideally, a dipole should be at a half wavelength above ground for best performance and making DX contacts. At 40 meters, that would be 33 feet.
Does a dipole antenna have to be straight?
Dipole antennas need not be installed in a horizontal straight line. They are generally tolerant of bending, sloping or drooping as required by the antenna site. Remember, however, that dipole antennas are RF conductors. … (So does the coax shield, unless it is routed at 90° from the antenna.)
What makes the whip antenna so popular?
The antenna is designed to be flexible so that it does not break easily, and the name is derived from the whip-like motion that it exhibits when disturbed. … Whips are the most common type of monopole antenna, and are used in the higher frequency HF, VHF and UHF radio bands.
Can you bend a whip antenna?
In the case of whip antennas like those usually used on radio receivers, these are monopole antennas tuned to the 2.4ghz band (at least, the FrSky ones are. Some radios transmit on other frequencies). By bending the antenna, you change it’s ability to radiate on the proper frequency.
What metal is best for antenna?
Copper is a best suited material for base antennas. The metal, while soft and malleable, is quite rigid. Stainless steel has a higher tensile strength, so thinner wire can be used.