FIELD: radio engineering. SUBSTANCE: direction finder has aerials 1 and 2, receivers 3 and 4, mixers 5 and 6, search unit 8, local oscillators 8 and 9, intermediate frequency amplifiers 10-14, amplitude detectors 15-17, keys 18-20, multipliers 21-24, narrow-band filter 25-28, phase-meters 29-31. EFFECT: expanded range of frequency search of signals without expansion of range of frequency retuning of local oscillators. 3 dwg
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|---|---|---|---|
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|
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RU2007733C1 |
