Thumbs 1
Thumbs 1

Shadin 8800 Altitude Encoder

Add to Wishlist
Part# 11-12035
MFR Model# 8800T


Altitude encoders translate the altitude of the aircraft in 100-foot increments to a specific code that is transmitted by the transponder to the Air Traffic Controller, shown next to the aircraft symbol and transponder code. The Shadin Avionics Falcon Encoder provides automatic altitude data to GPS and Loran receivers, along with Mode C encoder and high resolution serializer functions in one compact unit. The Shadin Avionics encoder meets TSO requirements, helps the GPS to maintain accurate 3-D position calculation, and substitutes fourth satellite altitude reference. The Shadin Avionics encoder feeds gray code altitude information to the transponder. It simultaneously feeds RS-232 altitude data to the GPS and the Shadin Avionics Altitude Management System (AMS-2000) for Instantaneous Vertical Speed calculation, The AMS-2000 has an innovative fixed time-based (not fixed altitude) warning as the target altitude is approached. This means the alert is given earlier at higher rates of vertical speed for a smoother level off, allowing 20 seconds to level off, regardless of the rate of climb or descent. The addition of the Shadin Avionics Encoder enables an enhanced, high resolution 10 foot resolution to be displayed on your AMS-2000 Altitude.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


  • Size: 3.125"L x 3.0"W x 2.124"H
  • Weight: 0.8 lbs.
  • Input Power: 10 to 30 VDC
  • Operating Temperature: -20C to +55C
  • Altitude Range: -1000 to 35,000 feet
  • Input: Static Pressure
  • Outputs: SSR Automatic Pressure Altitude (gray)
  • Transmission Code / RS-232
  • TSO Category: C88a
  • Warranty: 12 Months



Please note, Pilotshop'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. Pilotshop 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.

Q: 11-12035 Encoder What model is this? 8800-M or the latest Shadin makes 8800-T?

The Shadin 8800 Altitude encoder (11-12035) is the latest version, model 8000-T.