FIELD: multiple-channel communication systems which use point-to-point connection. SUBSTANCE: device uses parallel-sequential method for signal frequency search with double conversion of received signal and double integration. Synchronization signal is considered received if signal in one channel is greater than average level of noise constituent of correlation convolution of signals. Device has frequency converters, correlators, detectors, integrators, channel code generator, frequency discriminator, generator of signal for tuning controlled oscillator, and controlled oscillator. EFFECT: decreased search duration, increased signal-to-noise ratio in each channel, increased quality of signal filtration in each channel.
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