Park Rapids Avionics Products
Garmin GTX 33ES Remote Mounted Mode S with Extended Squitter
The Garmin GTX 33ES Digital Transponder is an IFR-certified, remote-mounted surveillance module engineered for dual 14 and 28 VDC aircraft electrical systems. By removing physical controls from the front bezel, this unit mounts inside an electronics bay or behind the instrument panel to save valuable console real estate. It interfaces seamlessly with compatible glass cockpit displays to transmit highly reliable position, altitude, and tracking code parameters to air traffic control networks.
Description
This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 7/21/2026.
Key Technical Capabilities
- 1090 MHz Extended Squitter (ADS-B Out): Features built-in TSO-C166a certified ES broadcast logic. This architecture transmits highly accurate GPS-derived position, velocity, and tracking data to meet modern NextGen airspace mandates.
- Remote Display Control Integration: Designed without a manual user interface on the chassis. It relies exclusively on high-speed serial data connections to accept transponder codes and ident commands straight from primary GPS/Nav/Comm units.
- Solid-State Power Transmitter: Utilizes an efficient, solid-state internal transmitter design that delivers a continuous 250-watt nominal power output. This design reduces thermal emission signatures and lowers active power consumption on the aircraft electrical bus.
- Mode S Surveillance Layer: Engineered to fully satisfy European Level 2 surveillance regulations, providing robust traffic datalink features and localized Traffic Information Service (TIS-A) display capability.
- Automated Flight Operations: Incorporates internal sensor processing loops that handle automated altitude monitoring with integrated voice warnings, remote ident synchronization, and automatic airborne/standby mode switching.
Additional information
| Part Number | 011-00779-30 |
|---|---|
| Serial Number | 89129446 |
Only logged in customers who have purchased this product may leave a review.





Reviews
There are no reviews yet.