FIELD: communications engineering. SUBSTANCE: channel decoding device of receiver functions to receive characters encoded by inserting frame data of at least one definite bit in given location. Channel decoding device has character inserting block that receives characters and inserts character of definite value in given insertion location of definite bit and outputs received characters disposed in other locations. Decoder executes decoding of characters received at output of character insertion block. EFFECT: enhanced reliability of character coding and decoding. 12 cl, 16 dwg, 4 tbl
