The DUAL-COM II Intercom is a portable two-place unit designed for two-place aircraft and developed for high noise environments.
This intercom has two separate volume controls which can be adjusted by either the pilot or passenger to meet individual hearing levels and integrates directly with all Comtronics headsets and helmets providing ar-to-air and air-to-ground communication.
It also has a toggle switch for Radio 1 and Radio 2. This switch allows pilots the option to transmit from either of two separate transceivers while monitoring both simultaneously. Since there are two isolated radio ports for use with two different hand-held radios, pilots can contact the ground crew on one transceiver while notifying a nearby airport on the other. All of this can be accomplished by using the switching circuitry provided.
Radio selection is controlled by one toggle switch located on front surface of box. Radio actuation is controlled by a single push-to-talk switch which may be mounted on the aircraft control stick.
(culled from presstelegraph.com)
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