The PMA7000 audio control panel features IntelliVox, a proprietary automatic VOX squelch control
PS Engineering, Inc. audio control panel features IntelliVox, a proprietary automatic VOX squelch control. Six-pole active filtering on individual microphone channels forms the center of the intercom system. The VOX squelch control constantly adjusts the squelch threshold on each microphone input, differentiating between cabin noise and human speech. Split mode communications capability allows crew members to use both radios independently.
The unit is designed to be a pin-compatible replacement for the PMA6000M-S, as well as the KMA-24. The positive-action buttons and legends are backlit for nighttime viewing. LED indicators provide annunciation of the selected modes. The receiver buttons also latch, for unambiguous mode identification even in bright sunlight. A fail-safe feature automatically connects the pilot to Com 1 if the unit or power fails. The audio selector panel also gives the pilot and passengers audio access to wireless telephone systems. Two individual high-fidelity stereo inputs allow entertainment flexibility for passengers and crew. Music source 1 is always provided to the pilots, music 2 is presented in the passenger area. A swap function allows pilots to use a yoke-mounted button to switch between Com 1 and Comm 2 without reaching for the panel.
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