DEVICE FOR GENERATING BACKGROUND NOISE AS FUNCTION INDICATOR IN DIGITAL RECEIVER, DIGITAL COMMUNICATION SYSTEM, AND METHOD FOR INFORMING OPERATOR IN DIGITAL RECEIVER

摘要

FIELD: digital communication systems. SUBSTANCE: generator background noise is built up in digital receiver to obtain low controlled value of background noise at output of receiver audio frequency so as to inform operator about continuous operation of receiver. EFFECT: improved design. 8 cl, 4 dwgs