The TKM 170B Nav/Com is a slide in replacement for the King 170 and 175 legacy nav com avionics.  These units provide \"flip-flop\" capability allowing decreased workload on the pilot.  The slide in replacement means low cost upgrade for your legacy nav/com.  This unit was recently checked and cleaned at Bevan-Rabell 9/2016 and was working when removed from my sundowner for upgrade to garmin waas unit.  Brand new buttons on the face are clean.  The digital display dims automatically.  This will make a handsome addition to your panel without thousands in install costs.  No rack or connectors included.  Shipping price includes insurance.  Thanks for offerding.  No returns please.