FIELD: radio engineering, communication.
SUBSTANCE: regional information communication system comprises a monitoring and control station and territorially distributed objects connected to each other by two-way radio communication, wherein the frequencies of heterodynes, narrowband filters and frequency selectors are related in a certain manner.
EFFECT: high selectivity, noise immunity and reliability of two-way radio communication between a monitoring and control station and each territorially distributed object by suppressing spurious signals received through additional channels.
3 cl, 3 dwg
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