Various Types of Aircraft Antenna Components

Aircraft use a wide range of radio frequencies to navigate to their destinations and communicate with ATC and other aircraft. To do so successfully, onboard radio equipment use antennas of various types and sizes, each one designed for a specific frequency band.

Communication antennas connect to the radio transmitters onboard the aircraft, they are mounted on the top or bottom of the fuselage, but both places are vulnerable to shadowing from the aircraft’s body. Shadowing occurs when the aircraft’s structure blocks the transmitting path of the antenna, interfering with the signal. Some aircraft mount an antenna on both the top and bottom of the fuselage and use the top antenna to communicate while on the ground, and the bottom antenna to communicate while flying.

GPS antennas communicate with satellites overhead to help locate the aircraft. However, the GPS transmission is often very weak, so GPS antennas usually have built-in amplifiers to boost the signal. The GPS signal also travels line-of-sight, and is very vulnerable to airframe shadowing, making it essential that the GPS antenna be mounted at the very top of the fuselage. Comms antennas can also interfere with a GPS antenna’s signal, so it is necessary to mount the two as far away as possible.

The navigation (or simply nav) antenna is mounted on the vertical tail in almost all aircraft. Nav antenna come in three types: cat whisker, dual blade, and towel bar. A single nav antenna feeds both nav receivers; therefore, a failure in the nav antenna would cause both systems to fail.

The navigation (or simply nav) antenna is mounted on the vertical tail in almost all aircraft. Nav antennas come in three types: cat whisker, dual blade, and towel bar. A single nav antenna feeds both nav receivers; therefore, a failure in the nav antenna would cause both systems to fail. Like all parts of an aircraft, antennas require inspection and maintenance. If an antenna is cracked or its paint wears off, water can enter and cause delamination, where the composite layers of the antenna begin to separate. If this happens, the antenna can be rendered useless. Proper mounting is also important, both to ensure that the antenna does not get torn off during flight, and to ensure that it is electrically grounded to the aircraft.

At NSN Parts Now, owned and operated by ASAP Semiconductor, we sell antenna parts and systems from high-quality manufacturers like Comant, Rami, Harris (D&M/Edo), and AeroAntenna Technology.

Part No Manufacturer Description QTY RFQ
01740-00 trig avionics waas gps antenna Avl RFQ
071-00221-0010 bendix king antenna Avl RFQ
071-01620-0001 bendix king waas gps antenna Avl RFQ
104-12 ted monopole transponder/dme antenna Avl RFQ
110-320 acr electronics tri-band elt antenna Avl RFQ
110-337 acr electronics tri-band elt antenna Avl RFQ
110-338 acr electronics tri-band elt antenna Avl RFQ
110-340 acr electronics tri-band elt antenna Avl RFQ
24-37-01 comant 24-37-01 vor/gs blade set Avl RFQ
AT-1108-1 rami vhf/uhf airborne communications antenna Avl RFQ
AT-1108ARC rami vhf/uhf airborne communications antenna Avl RFQ
AT-256A/ARC rami military/commercial communications antenna Avl RFQ
AT130-6 aeroantenna technology dme/transponder antenna Avl RFQ
AT2300-326 aeroantenna technology gps/xm antenna Avl RFQ
AT4300-3 aeroantenna technology radar altimeter antenna Avl RFQ
AT741B/B rami navigation antenna Avl RFQ
AV-1 rami ground/air communications antenna Avl RFQ
AV-10 rami vhf communications antenna Avl RFQ
AV-100 rami elt antenna Avl RFQ
AV-12 rami navigation antenna Avl RFQ
AV-12L rami navigation antenna Avl RFQ
AV-14 rami vhf communications antenna Avl RFQ
AV-15 rami vhf communications antenna Avl RFQ
AV-17 rami vhf communications antenna Avl RFQ
AV-200(-B) rami airborne elt antenna Avl RFQ
AV-21 rami radio telephone antenna Avl RFQ
AV-22 rami navigation antenna Avl RFQ
AV-3 rami ground/air communications antenna Avl RFQ
AV-401 rami airborne elt antenna Avl RFQ
AV-402 rami airborne elt antenna Avl RFQ
AV-5 rami ground/air communications antenna Avl RFQ
AV-520 rami vor, loc & gs "v&qout; dipole antenna Avl RFQ
AV-525 rami av-525 vor/loc/gs v type antenna Avl RFQ
AV-529 rami vhf communications antenna Avl RFQ
AV-530 rami av-530 antenna communications 118-137 mhz Avl RFQ
AV-532 rami navigation antenna Avl RFQ
AV-532L rami navigation antenna Avl RFQ
AV-534 rami vhf communications antenna Avl RFQ
AV-534L rami vhf communications antenna Avl RFQ
AV-535 rami av-535 138-174 mhz communications antenna Avl RFQ
AV-569 rami navigation antenna Avl RFQ
AV-575 rami marker beacon antenna splitter Avl RFQ
AV-590 rami communications splitter, 2 com's/1 antenna Avl RFQ
AV-64 rami marker beacon antenna Avl RFQ
AV-74 rami navigation antenna Avl RFQ
AV-74-1 rami dme/transponder antenna Avl RFQ
AV-801 rami gps waas antenna Avl RFQ
AV-924 rami airborne communications antenna Avl RFQ
AV-925 rami av-925 communications/elt antenna Avl RFQ
AV-925-1 rami av-925-1 communications/elt antenna Avl RFQ
AV-GPS rami gps antenna Avl RFQ
AV10 ra miller vhf comm rod antenna Avl RFQ
AV17 ra miller vhf comm bent whip antenna Avl RFQ
AV22 ra miller transponder antenna Avl RFQ
AV569 ra miller boat type marker beacon Avl RFQ
AV570 ra miller diplexer 1vor ant to 1nav/1gs Avl RFQ
AV571 ra miller triplexer 1vor ant to 2nav/1gs Avl RFQ
AV74 ra miller dme/transponder blade antenna Avl RFQ
AVGPS ra miller gps antenna Avl RFQ
AVT-4 rami vhf communications antenna Avl RFQ
CI-105-16 comant dme/transponder antenna Avl RFQ
CI-420-10 comant xm weather antenna Avl RFQ
CI101 comant transponder stub antenna Avl RFQ
CI102 comant marker beacon Avl RFQ
CI105 comant dme/transponder antenna Avl RFQ
CI105-16 comant dme/transponder antenna Avl RFQ
CI105-17L comant ads-b antenna Avl RFQ
CI105-25 comant dme/transponder antenna Avl RFQ
CI105-3 comant dme/transponder antenna Avl RFQ
CI105-6 comant dme/transponder antenna Avl RFQ
CI105-7 comant dme/transponder antenna Avl RFQ
CI105-9 comant dme/transponder antenna Avl RFQ
CI106 comant uhf radiotelephone antenna Avl RFQ
CI108 comant com antenna Avl RFQ
CI108-1 comant vhf antenna Avl RFQ
CI109 comant com whip antenna Avl RFQ
CI110-40-30 comant dme/transponder antenna Avl RFQ
CI110-41-30 comant dme/transponder antenna Avl RFQ
CI110-60-30 comant dme/transponder antenna Avl RFQ
CI110-61-30 comant dme/transponder antenna Avl RFQ
CI1125 comant diplexer dual vor/dual gs Avl RFQ
CI118 comant marker beacon Avl RFQ
CI118-1 comant marker beacon antenna Avl RFQ
CI118-10 comant marker beacon antenna Avl RFQ
CI118-9 comant marker beacon antenna Avl RFQ
CI119 comant com blade antenna Avl RFQ
CI120-1 comant vor/loc/gs navigation antenna Avl RFQ
CI120-200G/S comant vor/loc/gs antenna Avl RFQ
CI120-3 comant power combiner vor/gs Avl RFQ
CI120-4 comant power combiner vor/gs Avl RFQ

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