The GTX-327 is Garmin’s best Mode C Transponder. It lacks the GTX-330’s TIS traffic features, or the ADS-B capability of newer Transponders. The GTX-327 features: Large, easy-to-read digital display.

The panel-mounted GTX 327 is a TSO-certified Mode C digital transponder. Its innovative features, proven performance and reliability bring a whole new level of transponder utility to your aircraft.

Optionally available with available ES, or Extended Squitter, technology the GTX 330 takes the lead in providing an affordable pathway to ADS-B compliance for the Next Generation airspace system.

ADS-B Out. ADS-B Out works by broadcasting information about an aircraft’s GPS location, altitude, ground speed and other data to ground stations and other aircraft, once per second. Air traffic controllers and aircraft equipped with ADS-B In can immediately receive this information.

GDL 90 combines GPS satellite navigation with datalink communications to deliver interactive traffic and hazard surveillance.

Altitude encoders translate the altitude of the aircraft in 100-foot increments to a specific code that is transmitted by the transponder to the Air Traffic Controller, shown next to the aircraft symbol and transponder code. The Shadin Avionics encoder feeds gray code altitude information to the transponder.

Both the GNS 430W/530W and GTN series have the WAAS/SBAS GPS technology capable of meeting the requirements of an ADS-B “Out” position source.

ADS-B is required in Class A, B and C airspace within U.S. domestic airspace and all land mass regions of the U.S. as defined in 14 CFR 1.1 and it includes the states (contiguous and non-contiguous), U.S. possessions, or territories.

ADS-B Out works by broadcasting information about an aircraft’s GPS location, altitude, ground speed and other data to ground stations and other aircraft, once per second. Air traffic controllers and aircraft equipped with ADS-B In can immediately receive this information.

ADS-B extends the message elements of Mode S, adding information about the aircraft and its position. UAT provides free services, such as graphical weather and traffic information for ADS-B In-equipped aircraft. It does not replace the requirement for transponders.

ALT: altitude, sets Mode 3 and Mode C. TST: test, confirms operation of the transponder.

Garmin does not recommend the use of the Narco and King adapters with the GTX-327. This Transponder should be considered a new installation when upgrading from the AT-50/AT-50A/AT-150 and KT-78A/KT-76A. The GTX-327 is Garmin’s best Mode C Transponder.

Bezel Height 1.65 inches (42 mm) Bezel Width 6.25 inches (159 mm) Rack Height (Dimple to Dimple) 1.68 inches (43 mm) Rack Width 6.30 inches (160 mm) Depth Behind Panel with Connectors (measured from face of aircraft panel to rear of connector backshells) 8.77 inches (223 mm) GTX 327 Unit Weight 2.4 lbs.

GTX 335 is an ADS-B “Out” only solution, while GTX 345 adds ADS-B “In” capability as well — so you can access uplinked weather and traffic on compatible avionics displays as well as select portables and mobile devices via built-in wireless connectivity.