What is VHF antenna in aircraft?
The VHF antenna P/N 2448-88-00 is an airborne communication antenna capable of transmitting and receiving signals in the VHF band from 118 to 156 MHz (extended) including VDL mode 2. Designed for high-performance and wide-body aircraft, the VHF antenna has a compact design for reduced drag.
Which type of antenna is used in aircraft?
UHF antennas are commonly used for transponders and distance measuring equipment (DME), and they are always found on the bottom of the aircraft. They are about four inches long, and the same antenna can be used for both systems because the transponder frequency is in the middle of the DME frequency band.
What are different types of antennas used at VHF?
VHF Arrays. When you have a basic dipole antenna and add a reflector and director element to it, you have created an array antenna.
How does an aircraft antenna work?
How does an antenna work? The antenna at the transmitter generates the radio wave. The voltage across the antenna elements and the current through them create the electric and magnetic waves, respectively. At the receiver, the electromagnetic wave passing over the antenna induces a small voltage.
What does a VHF antenna do?
The main purpose of a VHF antenna is to provide a radiator for the power that the transmitter in the radio produces and to radiate this energy in the correct direction.
Where is VHF antenna located?
For example, AMEC states in its CAMINO-108 manual, “… the VHF antenna should be placed as high as possible and at least 5 meters away from any constructions made of conductive materials.” Vesper recommends, “Mount the antenna as high as possible (at least 2-3 meters (6-10 ft) above the water surface) and as far as …
What is aircraft antenna made of?
Either the ground plane or the dipole antenna elements can be made from any conductor, usually a metal. The best metals (in order) are silver, copper, gold, aluminum, zinc, nickel, brass, and bronze.
What is an omnidirectional antenna pattern?
In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.
What does VHF stand for in antenna?
VHF stands for very high frequency. It is the first band with wavelengths that are small enough to be compatible with short, efficient transmitting antennas. Due to the compact size, this antenna is mountable on vehicles and handheld radios. A whip VHF antenna usually has a length from at least 10 inches to 8 feet.
How to improve VHF antenna reception?
Antennas. No matter how good the radio,without an antenna,it won’t hear very much.
How to install a VHF marine antenna?
Installing an Air Wave Marine VHF antenna is easy thanks to our ProConnect system. Our factory installed FME connector is just slightly larger than the cable…
Can You coil a VHF antenna?
One coil placed in the center or at the base of a single-band vertical antenna is sufficient, but a single-band dipole will require two coils – one in each element of the dipole. For multiband HF antennas, different loading coils (or adjustable coils) are needed for coverage of each band.