FIELD: radio engineering; data transmission systems using frequency- and phase-modulated signals. SUBSTANCE: device depends for its operation on linear-frequency modulation of signals; novelty is that band filter, second mixer, and linear-frequency modulated mixer are connected in addition on sending end as well as mixer, band filter, and linear-frequency modulated local oscillator, on receiving end. In addition provision is made for timing operation of linear-frequency modulated local oscillators. EFFECT: enhanced jamming immunity. 1 cl, 3 dwg
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