DEVICE FOR MEASURING INPUT SIGNAL FREQUENCY OF PANORAMIC RADIO RECEIVER

摘要

FIELD: radiometry. SUBSTANCE: device has pickup antenna 1, input circuit 2, high-frequency amplifier 3, mixers 4,13, video amplifiers 7,27,30, intermediate-frequency amplifiers 5,15,16, amplitude detectors 6,26,29, oscillographic indicators 8,28,31, control unit 9, unit 10 for forming frequency sweep, first and second local oscillators 11 and 12, multipliers 14, 18, band-pass filters 17,19, phase inverter 20, adder 21, frequency detector 22, differentiating circuit 23, rectifier 24, switch 25. EFFECT: enhanced accuracy and reliability. 5 dwg