FIELD: radio engineering.
SUBSTANCE: invention may be used in broadband receiving units included into radio-monitoring hardware. Result is also achieved owing to using of signal frequency re-conversion in two-channel radio set by means of common heterodyne generated from heterodyne signals of radio channels 1 and 2 with frequency equal to heterodynes difference and divided by two. Besides, input signals are analysed at the second intermediate frequency by phase detector, which measures signal phase's difference, amplitude detectors and scheme AND, which determines signals availability in channels. Simultaneous presence of signals in both channels and zero phase difference is the indication of designed signal acquisition.
EFFECT: broadening of operating frequencies band in radio receiving equipment, possibility of simultaneous receipt of several signals, suppression of out of band channels and simplification of design.
2 cl, 3 dwg
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