Key Specifications & Features:

• Solid-state Mode S digital transponder providing ~250 watts nominal transmitter power output. 

• Supports Mode A (4096 codes), Mode C (altitude reporting) and Mode S All-Call and directed interrogations. 

• Input voltage: 11-33 V DC (14/28 V aircraft systems) and maximum power input about 27 W. 

• Operating up to 55,000 ft altitude, panel-mount size approx. 6.25″W × 1.65″H × 11.25″D (behind panel) and about 4.2 lbs installed. 

• Front panel features include easy-read DSTN LCD, timer/clock functions, VFR quick-squawk button, altitude monitor alert, TIS traffic input (in compatible installations). 

Condition & Documentation:
Unit has been bench-tested: verified proper operations, response to test set interrogations, power consumption within specification.   Guaranteed to function on arrival;  Guarantee for 30 days.

Application / Compatibility:
Ideal for general aviation aircraft seeking a Mode S transponder retrofit or replacement. Compatible with many Garmin-centric avionics stacks, but buyer must verify wiring, encoder/altitude input, antenna and certification/airworthiness requirements.
Includes:

• Garmin GTX 330 unit (P/N 011-00455-00)

• Test-tag / guarantee documentation

• Buyer Notes:

• Verify the aircraft’s power bus (14V vs 28V), correct installation kit or tray, antenna system and altitude encoder compatibility.

• Installation and certification (FAA/EASA) are buyer’s responsibility.

Keyword List (for SEO/Indexing)

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