Special Features:

High-speed, four channel hf data modem that transmits data over a standard 3khz single sideband at 9600 bps or a 6khz independent sideband at 19200 bps

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.