About the Pilot intercom squelch level

   
         
   

Audio threshold level to unmute the pilot intercom

   
         
    Turning the large outer Pilot knob CW increases the sound level needed to open the intercom for the pilot    
   

 

   
    Turning the large outer Pilot knob fully CCW is the hot mic position for pilot intercom    
         
    This is an Intercom control only; radio receivers control Com squelch and volume