Garmin GTX 330 GTX 330D Diversity Mode S Transponder, Traffic Information Service, Audio Alerts

GTX 330 Mode S Transponder Features

GTX 330D Diversity Mode S Transponder

The GTX 330D Diversity Mode S Transponder incorporates antennas mounted on the top and bottom of the aircraft for dependable operation while maneuvering. Top and bottom antennas are less prone to antenna shadowing by the aircraft structure while turning. A top mounted antenna is in a better viewing position for interrogation and reply to overhead aircraft.

Traffic Information Service

The GTX 330 Mode S transponder provides a data link for Traffic Information Service (TIS). TIS is derived through a Mode S transponder data link and viewed on a multifunction display. ATC radar sends a traffic picture within a radius of 55 miles from select sites. The TIS protected area is a cylinder of 7-mile radius, extending 3500’ above and 3000’ below the aircraft. Refer to the AIM Chapter 1 for more details.

TIS provides a graphic display of traffic information in the cockpit for non-TCAS equipped aircraft. Transponder-equipped aircraft can be displayed within the coverage volume within range of your position on indicators such as a Garmin GNS 430 or GNS 530, GNS 480, and GMX 200. Aircraft without an operating transponder are invisible to TIS. Refer to 400/500 series, GNS 480, or GMX 200 pilot literature for details.

GTX 330 ES Options

Automatic Dependent Surveillance-Broadcast (ADS-B) technology improves situational awareness and flight safety. With ADS-B capabilities, position, velocity, and heading information are automatically transmitted to other aircraft and ground stations. The current air traffic control system depends on a transponder request for pertinent aircraft information and does not include 3D position. ADS-B provides automatic transmission of aircraft information without a request.

NOTE: The GTX 330 with software version 7.00 or later, has been shown to comply with TSO-C166b and AC 20-165 and is eligible for use as an ADS-B out Transmitter meeting the requirements of 14 CFR 91.225 and 91.227 when installed in accordance with Garmin’s installation instructions. Refer to the AFMS for more information on your installation and whether it is ADS-B version 2 compliant.

Audio Alerts

(Setting options; male/female voice or tone, and volume level.)

•“Leaving Altitude” - Altitude Monitor deviation is exceeded.

•“Traffic” - TIS traffic alert is received.

•“Traffic Not Available” - TIS service is not available or out of range.

•“Timer Expired” - Count down time has expired.