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Dual Com intercom for ultralights and light plane operation.

The Comtronics DUAL-COM intercom is the only intercom made exclusively for ultralight and light- plane operation that will selectively receive and transmit on two transceivers without modifications.  

In addition to the same circuit as that used in our popular ultralight intercom. we have added a very efficient switching circuit that makes the unit even more versatile. It provides a pilot the option to transmit from either of two separate transceivers while monitoring both simultaneously.  

For instance, the pilot may wish to contact his ground crew via one transceiver and also notify a nearby airport of his location and intentions on another. All of this can be accomplished by using the simple switching circuit provided.  

The entire circuit has been placed within a metal enclosure of overlapping construction to effectively shield out RF and EMI interference. The selection process is controlled by one toggle switch located on the front surface of the box. Radio actuation is controlled by a single push-to-talk switch which may be mounted on the aircraft in a convenient location; for instance, on the pilot's control stick.  

In addition to the dual transceiver interface, the intercom includes a 9-volt battery for back-up and a 12- volt power jack with a voltage regulator built in. On the back side, there is a music input port that may be used for an FM radio or tape player.

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