The Model 10S1G4A is a self-contained, broadband microwave amplifier designed for laborator}' applications where instantaneous bandwidth, high gain, and moderate power output are required. A GAIN control, which is conveniently located 011 the unit’s front panel, can be used to decrease the amplifier’s gain by 10 decibels (dB) or more. Solid state technology is used exclusively to offer significant advantages in reliability and cost. A Model 10S1G4A, used with a frequency-swept signal source, will provide 10 watts o f swept power output from 0.8^4-.2 gigahertz (GHz). Typical applications include antenna and component testing, wattmeter calibration, and electromagnetic interference (EMI) susceptibility testing, as well as usage as a driver for frequency multipliers and high-power amplifiers. The Model 10S1G4A can be operated locally by using the unit’s front panel controls, or remotely by using the unit’s IEEE-488 or RS-232 interface.