This report describes the radar performance monitor designed for use with Radar Set AN/FPS-8. The monitor was developed by the Sperry Gyroscope Company under a Rome Air Development Center contract.nThe monitor provides a continuous check on AN/FPS-8 transmitter power, receiver sensitivity (noise figure), and relative tuning. A simple and convenient switching arrangement permits the antenna voltage standing wave ratio to be readily checked.nThe monitor possesses other outstanding features:Application to many other ground radar sets, miniaturization, fail safe operation, and operation without interference with radar set operation. New and improved design techniques, in the form of a peak r-f power meter, a noise injection and noise measuring circuit, and microwave components were utilized. The use of printed-board plug-in circuits with miniaturized components helped in reducing the over-all size.
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