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Garmin International, Inc., a unit of Garmin Ltd., has announced the GTX 335D and GTX 345D, two diversity transponders that provide optimal automatic dependent surveillance-broadcast (ADS-B) Out coverage and visibility while operating throughout the global airspace system. The GTX 335D offers ADS-B Out, while the GTX 345D provides ADS-B Out, as well as ADS-B In traffic and weather for display on compatible avionics and mobile devices. Remote-mount versions are also available. The GTX 335D/GTX 345D are intended for qualifying aircraft that may prefer or require a diversity solution, while also meeting or exceeding global ADS-B airspace requirements.
“The GTX 335D and GTX 345D are yet another example of our leadership position within the ADS-B market as we continue to provide global solutions for all segments of aviation,” said Carl Wolf, vice president of aviation sales and marketing. “With more ADS-B solutions fielded than anyone else, Garmin is committed to providing ADS-B upgrade options to aircraft owners around the globe that address their operational needs, and with the GTX 345D, giving them the option to receive ADS-B In benefits in the cockpit.”
The GTX 335D/GTX 345D utilize two antennas mounted on the top and bottom of the aircraft, providing superior operational coverage. As opposed to having a single antenna that is mounted on the bottom of the aircraft, diversity antennas help reduce antenna “shading” caused when the aircraft turns or maneuvers. Diversity antennas also improve line-of-sight visibility and allow the transponder to more robustly send and receive ADS-B transmissions from other participating aircraft, further improving visibility while operating throughout the global airspace system.
Select G1000, G1000 NXi and G3000-equipped aircraft have an elegant and simple path to incorporate a diversity transponder-based ADS-B solution using the GTX 335D/GTX 345D. A remote-mounted version of the GTX 335D or GTX 345D takes the place of the aircraft’s transponder and interfaces with the aircraft’s existing WAAS position source to meet ADS-B Out requirements. The GTX 345D is capable of displaying various ADS-B In benefits, including subscription free Flight Information Service-Broadcast (FIS-B) weather1 and ADS-B traffic on the primary flight display (PFD) and multi-function display (MFD).
In addition to integrated flight deck compatibility, the GTX 335D/GTX 345D interface with a variety of other Garmin avionics, flight displays and mobile devices. These include the GTN 650/750 and GNS 430W/530W navigators, the G500 TXi/G600 TXi/G700 TXi and G500/G600 flight displays, as well as the aera 796/795 and aera 660 portables. These transponders are also compatible with the Garmin Pilot, FltPlan Go and ForeFlight Mobile applications, as well as other third-party avionics. Display capabilities vary, visit the Garmin website for full compatibility details.
The GTX 335D and GTX 345D ADS-B transponders have received Technical Standard Order (TSO) authorization from the Federal Aviation Administration (FAA) and deliveries for select installations will begin next week. Garmin will have an updated Aircraft Model List (AML) Supplemental Type Certificate (STC) in late Q2 2019 comprising of hundreds of aircraft makes and models. The GTX 335D and GTX 345D are available for a list price of $6,495 and $7,995 respectively.