Special Features:

Operating temperature zero to 50 degrees c; humidity range 95 percent non-condensing; modem, communications set md-129 (v)2(c)(p) usc-42(v) ; single channel

Properties:

An item which modulates and demodulates one or more electrical signals. It connects data terminal equipment to a communication line or network such as telephone, radio or telegraph. It may include the multiplexing and demultiplexing circuits, circuit amplifiers and source(s) of carrier frequency. For items designed for light signals, see modem, fiber optic.