Keeping it simple with the KT 76 transponder

If you've spent any time in the cockpit of a Cessna, Piper, or Beechcraft from the last forty years, you've almost certainly looked at a kt 76 transponder sitting in the radio stack. It's one of those ubiquitous pieces of hardware that has become a staple of general aviation, recognizable by its simple knobs and that distinctively utilitarian BendixKing faceplate. While the world of avionics is moving toward touchscreens and integrated glass cockpits, there is something remarkably resilient about this specific unit. ...

February 14, 2026 · 7 min · Sepulveda Gruffi