CRT16 is a portable UHF full-duplex belt transceiver for reliable wireless intercom use. It covers the 400-550 MHz band with RX and TX channels closely spaced, enabling true full-duplex operation. The unit can operate standalone as a base or as part of a larger intercom system. It supports 16 RX and 16 TX switchable frequencies, uses a Fischer 5-pin mic/headphone connector, and provides an external volume control. Power comes from four AA cells (alkaline or NiMH); magnesium body variant is available.