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.
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.
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