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BendixKing Kt 74 ADS-B Mode S Transponder For Experimental Aircraft - WAAS GPS Nav Required

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If a new transponder is on your "to-get" list, you might want to choose one that's both relevant now and in the future. The KT 74 transponder from Bendix/King is the easiest upgrade for the popular KT 76A/C and KT 78A models, with a 'plug and go' capacity. And it's ADS-B compliant, therefore meeting all 2020 requirements. It is low-cost, easy to install and fits into your existing panel. Suiting your needs now and in the future.

  • Retrofit - 'plug and play' installation
  • Low-cost solution that will offset future costs
  • Low power consumption
  • ETSO and TSO approved Mode S
  • Accurate readings with updates every few seconds
  • More efficient routing and better situational awareness
  • Meets ADS-B 2020 requirements when paired with Garmin 430 / 530W or GTN 650 / 750.
  • ADS-B will result in better communication between pilots and air traffic controllers for more efficient routing and resource management
  • Anyone who flies a Mode C or Mode S transponder will need to be equipped with ADS-B "Out" by 2020
  • Radar controls can be 12 seconds out of date
  • ADS-B "Out" means you're broadcasting your position information to ground stations and other aircraft
For STC information submit request at time of order

Peregrine STC no longer required per latest software revision.


  • Type Class 1 Mode S Level 2 els
  • Certification TSO C112D, C166B and ETSO C112C, C166B
  • Compliance DO-160G, DO-181E, DO-260B Class B1S, DO-178B Level B, DO-254 Level C
  • Supply Voltage (DC) 11 - 33 V
  • Typical Current Consumption (at 14V) Idle: 0.22 A, Active: 0.45 A
  • Nominal Transmitter Power 240 W at connector
  • Operating Temperature -25 to +70
  • Cooling Requirement No fan required
  • Weight 1.35 kg
  • Dimensions H 43mm (1.7") x W 160mm (6.30") x L 272mm (10.7")

In The Box

  • KT 74
  • Rack
  • Connector Kit
  • Accessories
  • Frequently Purchased With
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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.

Q: Will KT74 comply with Diversity or Future Canadian or European Adsb out standard?

Yes it will, as long as the unit is receiving WAAS GPS signal from a compatible source.

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