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Sandia Stx 165 Panel Mount Transponder For Experimental Aircraft

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Overview

The STX 165 Sports a professional 1/2 3ATI Bezel that compliments any aircraft panel. Its bright OLED display is readable in virtually all lighting conditions and automatically dims for night time operations. Check out just a few of the STX 165 features.
  • Built-in Encoder
    Simplifies installations and lowers cost.
  • Three Timer Functions
    Elapsed Flight Time, Up Timer, Down Timer
  • Pressure Altitude Display
    See what altitude your transponder is reporting to Center
  • Optional OAT Probe Input
    Displays Outside Air Temp.,Density Altitude, Icing Alert
  • Small and Light Weight
    7.4" behind the panel depth, 1.3 lbs.

Specs

  • Electrical Input Voltage: 11-33 Vdc
  • Current Requirements: 500mA@28Vdc
  • Power Output: 200 Watts Nominal
  • Transmitter Freq: 1090 MHz
  • Receiver Freq: 1030 MHz
  • Receiver Sensitivity: -74dBm Nominal at 90% reply rate
  • Dimensions: 1.78"H x 3.5"W x 7.34"L
  • Weight: 1.30Lbs
  • Alt. Encoder: Built-in 35K' Encoder; External RS-232
  • OAT Probe: Sandia STP 78 (Optional)
  • Temperature: -20 degrees to +55 degrees C
  • Altitude: -1000 to 35,000 Ft.
  • Certification: DO160F; DO178B Level C; TSO C74d; TSO C88a

Harness

  • Part No. 11-11962 (SANDIA STX 165 PANEL MOUNT XPDR W/ HARNESS): Comes with 5 foot leads for power and ground. Also comes with SMA connector for antenna out of the STX 165.
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Reviews

I have now used the Sandia STX165 transponder in a couple of aircraft installations where space was a premium. The size and integrated altitude encoder simplify installation and reduce installation time and cost. The transponder can also output control, squawk, and baro altitude data to a UAT to produce a relatively inexpensive ADS-B out/in solution.

Lloyd A
December 30, 2020

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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