Aircraft Transponders for sale on eBay
  Item Description Price  
Sandia Aerospace Altitude Encoder SAE 5-35Sandia Aerospace Altitude Encoder SAE 5-35195.00 USD
TransponderTransponder100.00 USD
Alpha 745-419-25-001 XP-EDH4 TransponderAlpha 745-419-25-001 XP-EDH4 Transponder79.99 USD
PN: 3614009-4201 (ALT. TR-421B) - TRANSPONDERPN: 3614009-4201 (ALT. TR-421B) - TRANSPONDER400.00 USD
Stratus ESG Transponder by Appareo, refurbished, no tray / rackStratus ESG Transponder by Appareo, refurbished, no tray / rack2000.00 USD
Garmin GTX-327 Transponder PN 011-00490-00Garmin GTX-327 Transponder PN 011-00490-00639.00 USD
GARMIN GTX 335 ADS-B OUT MODE S TRANSPONDER WITH GPS P/N 011-03300-40GARMIN GTX 335 ADS-B OUT MODE S TRANSPONDER WITH GPS P/N 011-03300-401700.00 USD
GARMIN GTX 335 - 011-03300-00GARMIN GTX 335 - 011-03300-002400.00 USD
Stratus ESG Transponder by Appareo, no rackStratus ESG Transponder by Appareo, no rack1200.00 USD
4401-1-250 Becker Avionic ATC 4401 Transponder (Core)4401-1-250 Becker Avionic ATC 4401 Transponder (Core)308.00 USD
Bendix King KT 76A Transponder GoodBendix King KT 76A Transponder Good250.00 USD
Garmin GTX-327 Transponder PN 011-00490-00Garmin GTX-327 Transponder PN 011-00490-00749.00 USD
ARC RT359A Transponder, yellow taggedARC RT359A Transponder, yellow tagged865.00 USD
Overhauled Narco AT-150 TSO Transponder (14/28V) w/ Tray – FAA 8130-3 (4/2025)Overhauled Narco AT-150 TSO Transponder (14/28V) w/ Tray – FAA 8130-3 (4/2025)777.00 USD
Serviced Narco AT-50 TSO Transponder w/ Tray pre-wired – FAA 8130-3 (4/2025)Serviced Narco AT-50 TSO Transponder w/ Tray pre-wired – FAA 8130-3 (4/2025)777.00 USD
Teledyne Electronics TS-4077 / APM-424 (V) Transponder Test Set With Cables_Teledyne Electronics TS-4077 / APM-424 (V) Transponder Test Set With Cables_1500.00 USD
BENDIX KING KT 76C ATC TRANSPONDER P/N: 066-01156-0101 With trayBENDIX KING KT 76C ATC TRANSPONDER P/N: 066-01156-0101 With tray500.00 USD
Used R.A. Miller Industries Inc. (RAMI) Antenna Transponder p/n AV-22(23936)Used R.A. Miller Industries Inc. (RAMI) Antenna Transponder p/n AV-22(23936)27.00 USD
Becker transponder ATC 4401 - Mode A/C with ATC encoder & wiring harnessBecker transponder ATC 4401 - Mode A/C with ATC encoder & wiring harness1200.00 USD
GARMIN GTX 330 TRANSPONDER PN 011-00455-00 - Needs RepairGARMIN GTX 330 TRANSPONDER PN 011-00455-00 - Needs Repair695.00 USD
GARMIN GTX-330ES ADS-B COMPLIANT TRANSPONDER WITH TRAY, BACKPLATE AND CONNECTORGARMIN GTX-330ES ADS-B COMPLIANT TRANSPONDER WITH TRAY, BACKPLATE AND CONNECTOR1500.00 USD
Stratus ES Transponder P/N: 153510-00069Stratus ES Transponder P/N: 153510-000691425.00 USD
Garmin Transponder GTX320A with TrayGarmin Transponder GTX320A with Tray550.00 USD
Apollo SL 40 SL40 SL-40 Transponder GRAY Insert Lens Free USPS Priority GARMINApollo SL 40 SL40 SL-40 Transponder GRAY Insert Lens Free USPS Priority GARMIN58.00 USD
APPAREO STRATUS ES TRANSPONDER P/N 153510-000069 & STRATUS 3i REMOTE ADSB IN/OUTAPPAREO STRATUS ES TRANSPONDER P/N 153510-000069 & STRATUS 3i REMOTE ADSB IN/OUT1500.00 USD
011-00455-60 Garmin GTX-330ES ADS-b Transponder with Tray, Mods (Volts: 14-28)011-00455-60 Garmin GTX-330ES ADS-b Transponder with Tray, Mods (Volts: 14-28)1589.00 USD
US Gables G-1736 Transponder Control PANEL Boeing Ships FreeUS Gables G-1736 Transponder Control PANEL Boeing Ships Free299.95 USD
Bendix/King KT-76A ATC Transponder 13.75V PN 066-1062-00Bendix/King KT-76A ATC Transponder 13.75V PN 066-1062-00145.95 USD
Comant DME/Transponder antenna, new condition. CI 110-40-30Comant DME/Transponder antenna, new condition. CI 110-40-30400.00 USD
ELECTRIC DUAL TRANSPONDER ADAPTER / Model 1080 / 098051-0100ELECTRIC DUAL TRANSPONDER ADAPTER / Model 1080 / 098051-0100299.00 USD