FIELD: electric communications; amplitude-frequency response measurement for group and linear channels of cable transmission system, radio relay, and other communication links. SUBSTANCE: device has data recording and control unit 1, generator 2, decoupling resistors 3.1-3.4, amplifiers 4.1-4.4, communication channel 5 under measurement, detectors 6, subtraction unit 7, transmitter 8, and receiver 16. Device provides for single measurement of communication channel amplitude-frequency response at each frequency chosen for measurement. EFFECT: improved measurement speed. 3 cl, 5 dwg
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