Bendix/King
KMA28
Audio Amplifier/Intercom/Marker Beacon Receiver
Section I GENERAL INFORMATION
1.1INTRODUCTION
The KMA 28 represents the next step in cockpit audio control and intercommunications. Using proprietary IntelliVox® design, this unit eliminates the requirements for intercom squelch adjustments. The unit is designed for outstanding ergonomics and visually de- fined mode annunciation and selection.
Before installing and/or using this product, please read this manual completely. This will ensure that you will take full advantage of all the advanced features in the KMA 28.
1.2SCOPE
This manual provides detailed installation and operation instructions for the Honeywell, Inc. KMA 28 Audio Selector Panel/Intercom System
Model | Description | Part Number |
KMA 28 | Stereo Audio Panel with Marker |
1.3EQUIPMENT DESCRIPTION
The KMA 28 is a state of the art audio isolation amplifier and audio selector that contains an automatic voice activated (VOX) intercom system. It can switch up to three transceiv- ers (Com 1, Com 2 and Com 3) and six receivers (Nav 1, Nav 2, ADF, DME, MKR and AUX).
The TEL mode allows the KMA 28 to act as an audio interface between aircraft head- phone and microphones and specific aircraft approved (FAA/FCC) cellular telephone equipment.
Warning: Use of
There are two unswitched inputs, for autopilot disconnect, and/or radar altimeter warning. Push buttons select the receiver audio source provided to the headphones. A SPR button allows the user to listen to the receiver(s) selected on the cabin speaker. Except for the unswitched inputs, all speaker audio is muted during transmit.
A rotary switch selects one of the three communication transceivers for the pilot and co- pilot position, and allows radio transmission. In "Split Mode" the KMA 28 has the ability to allow the pilot and copilot to operate different transceivers independently. The TEL mode allows the pilot to use the cellular telephone interface. External switches permit telephone operation for the copilot and passengers.
An emergency mode connects the pilot headphone and microphone to COM 1 if power is removed for any reason, or if the power switch is placed in the Off (emergency ) position.
IntelliVox® is a trademark of PS Engineering, Incorporated, and used with their permission
Page | Rev. 0, Sept. 2000 |