The KMA-24 is a standard King audio panel and a popular item. This TSO'd unit includes a marker beacon receiver, marker beacon lights, and full audio switching. The audio switching features separate "alternate-action" pushbuttons and isolation amplifiers for both headphones and the cabin speaker.. With the KMA 24, the next position of the rotary switch may be either "TEL" (radiotelephone) or "HF" (high frequency transceiver.) The former is more likely to be found in aircraft used mostly for domestic operations, the latter for international operations. The COMM 1 and 2 positions (COMM 1-4 or 1-5 for KMA 24H) are for transmitting.
Page 1 KMA 24 and KMA 24H Bendix/King Audio Control Systems.; Page 2 KMA 24 models, or of HF on other models In hot mike operation all intercom microphones mike and headphones directly to COMM 1 of the KMA 24.; Page 3 KMA 24 Audio Control System Marker Beacon Lamp Test Button Marker Beacon AUTO Select Speaker Audio Select Buttons Lights Buttons Photocell For Automatic Marker Lamp Dimming.. The Bendix King KMA-24 audio panel can be wired to work in an airplane audio system. It drives microphones and headsets for communication within the plane and for communication through the radio system. The wiring of the aircraft can be adapted to the KMA-24 through the use of Molex terminal pins crimped on to the ends of the wires and inserted.