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METHOD FOR MONITORING OPERATION OF RECEIVERS IN RELAY STATIONS CONSISTING OF RADIOTRANSMITTERS AND RECEIVERS CONSTITUTING INFORMATION TRANSMISSION PATH, IN PARTICULAR TO UNATTENDED RELAY STATIONS OF THE PATH
METHOD FOR MONITORING OPERATION OF RECEIVERS IN RELAY STATIONS CONSISTING OF RADIOTRANSMITTERS AND RECEIVERS CONSTITUTING INFORMATION TRANSMISSION PATH, IN PARTICULAR TO UNATTENDED RELAY STATIONS OF THE PATH