Garmin GTX33 Mode S Digital Transponder & GA 55 Antenna

a.     GTX 33 Mode S Digital Transponder – P/N: 011-00779-10, MOD LEVEL 2

[per the Manufacturer] A remote-mounted, Mode S digital transponder. Designed to save panel space, it operates silently behind the instrument panel and is controlled via your primary avionics. It delivers 250 watts of power and supports full IFR certification, traffic datalink capabilities, and ADS-B Out compliance.

Key Features & Capabilities

• Mode S & ATCRBS: Provides traditional ATC radar tracking and replies to Mode A, Mode C, and Mode S interrogations.
• ADS-B Compliance: Extended Squitter (ES) versions utilize precise WAAS GPS data to broadcast your aircraft’s position, velocity, and Flight ID to ground controllers with pinpoint accuracy.
• Traffic Information Services (TIS-A): Receives uplinked radar traffic from ground stations and alerts you to nearby aircraft via compatible displays.
• Remote Ident & Standby: Includes remote ident and auto-standby, eliminating the need to reach for a physical transponder knob.
• Antenna Diversity (GTX 33D models): Provides upper and lower antennas for improved air-to-air surveillance.
• Altitude Monitor: Features voice alerts to notify you if you deviate from your pre-selected altitude

b.     GA 55 XM Satellite Radio antenna (Used)