How to measure whip antenna?
The length of the antenna should be measured from the point where it leaves close proximity to the ground, or from the input/output. If a whip is mounted on a box, and connected with simple wire, then that wire becomes part of the antenna.
What is the gain of a whip antenna?
Datasheets of whip antennas usually state 0-2dBi gain but these values are usually measured with the antenna mounted on a large perpendicular ground plane. The optimal ground plane size for whip antennas is half-wavelength or higher.
Can you bend a whip antenna?
Because the brushes must make contact with the vehicle surface, they can bend or completely break off whip antennas.
Can you use insulated wire for an antenna?
The short answer to the question as to whether or not you can use insulated wire for an antenna is “Yes you can”. Insulated wire will make your antenna appear physically shorter at the resonant point, but the difference is slight (estimated to be about 2%).
What kind of antenna is a whip antenna?
This Whip Antenna calculator calculates various parameters of whip antenna or monopole antenna. This calculator on the whip antenna mentions formula or equations used for calculations. One might have seen long straight rod on the car, it is known as whip antenna. It consists of flexible wire.
How big is an artificial ground plane antenna?
Ground plane antenna. With stationary whips mounted on structures, an artificial “ground plane” consisting of three or four rods a quarter-wavelength long extending horizontally from the base of the whip is often used.
Can a car wash brush damage a whip antenna?
Whip antennas on vehicles can be damaged by automatic car wash equipment, especially those that use spinning brushes to abrasively rub dirt off the exterior of the vehicle body. Because the brushes must make contact with the vehicle surface, they can bend or completely break off whip antennas.
How big is a 2 meter radio antenna?
Given 2 dipole antennas, resonant at the 2-meter band (146 MHz) exactly, differing in their construction: Uncoated copper tubing with an outer diameter of 19.05 mm (0.75 inches), something like a 3/8 copper tube. Uninsulated copper wire with an outer diameter of 2.053 mm (0.0808 inches), something like 12 AWG copper wire.