In radio engineering, an antenna is an interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver. In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplified. Antennas are essential components of all radio equipment.

An antenna is an array of conductors (elements), electrically connected to the receiver or transmitter. Antennas can be designed to transmit and receive radio waves in all horizontal directions equally (omnidirectional antennas), or preferentially in a particular direction (directional, or high-gain, or “beam” antennas). An antenna may include components not connected to the transmitter, parabolic reflectors, horns, or parasitic elements, which serve to direct the radio waves into a beam or other desired radiation pattern.


Kit, GRA 55, Rack, Connector Kit, Antennas

This comprehensive radar altimeter solution expands upon Garmin's high-performance, all digital GRA 5500 radar altimeter to include the GRA 55, a best-in-class and cost-effective radar altimeter designed specifically for helicopters and general aviat..

Optional Antenna Kit (GTX 320/320A/327/330)


Radar Altimeter Antenna, S67-2002

Flush-mounted radio altimeter antenna designed to provide improved performance and reduced size and weigh.  Small size provides ease of mounting.  Ideal for general aviation application...

Sub-Assy,Bluetooth Antenna Kit


Two-Way Splitter (500 ohm, BNC)


UAT Blade Antenna, passive, TNC


Antenna Doubler, ARINC 743 Style, GA 36/37


GA 58 TNC, Unit Only


Antenna Extension Cable


Handheld/portable Antenna


TN72 install kit

Trig TN72 TABS GPS installation kit only (replacement TN72 unit sold separately). The TN72 GPS works in combination with a Trig transponder, providing real-time airspace reporting and surveillance. Automatic Dependent Surveillance-Broadcast (ADS-B) t..


Mounting Tray for the TRIG TT21, includes Mounting Tray only.‏..

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