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An instrument which measures the level of continuous noise present in amplifier and/or receiver circuits with reference to a fixed level of signal generated by a separate noise source. It is designed to measure noise levels over a wide band of frequencies including radio and video frequencies, and is normally calibrated in decibels relative to a specified r.M.S. Voltage summation across a specified impedance, or in decibels relative to a specified noise power level. if only audio frequency range, see meter, audio level.
Classification: Instruments and apparatus without a recording device specially designed for telecommunications, nesoi
NSN 4140-01-412-9420
NSN 2925-01-168-6253
NSN 5975-00-946-7940
NSN 5905-00-605-7805
NSN 6110-00-305-2838
NSN 5910-01-440-9558
NSN 5930-01-200-3357
NSN 6685-01-100-8061
NSN 6145-01-311-6386
NSN 6110-01-309-3502
NSN 5985-00-156-9287
NSN 4140-01-497-5107