shiny.ice Posted June 19 Report Share Posted June 19 I have two fins on the belly, one long antenna on the roof, and one fin on the roof. What are each of them? My guess is the long is com, the rest are ADSB/transponder. Quote Link to comment Share on other sites More sharing options...
Ulmo133 Posted June 20 Report Share Posted June 20 Hello, Transpondeur antenna is generally very short with a ball at the end or looking like a shark fin : https://www.aircraftspruce.com/categories/avionics_instruments/av/menus/av/antenna_transponder.html Radio antenna is much longer with an angle or not : https://www.aircraftspruce.com/categories/avionics_instruments/av/menus/av/antenna_com.html Good day. Quote Link to comment Share on other sites More sharing options...
Anticept Posted June 21 Report Share Posted June 21 Comm antennas can come in many styles, but are usually whip type but sometimes are long shark fin type. Short shark fins are typically transponders and ADS-B. Semi-round button looking things are usually GPS. ELTs are usually whip, or stick and ball type. If it's a 406 ELT it will be on top, the old 121.5s are on the belly, usually. Quote Link to comment Share on other sites More sharing options...
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