Four place portable intercom like new condition. This is a real plus for aircraft renters, CFIs or pilots who use more than one plane.
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It operates on a 9 volt DC battery. The "pilot isolation" switch allows pilot privacy from intercom activities.
The built-in "record" and "listen" features allow usage of an external digital recorder for recording clearances, ATIS, instructions or flight plan information. This same feature allows the playing of music during long flights. However, the music will automatically "mute" when either ATC or passengers talk.