FIELD: communications engineering. SUBSTANCE: punching device provided with turbo coder for turbo-coding of input source data to obtain plurality of data frames and tail characters at desired code speed has vertical sweep generator for producing transmission frame by punching coded character, controller for controlling mentioned vertical-sweep generator by controlling mentioned character frame punching process according to code speed, and punching of tail characters only in case number of characters chosen from frame and of tail characters is greater than number of bits corresponding to character speed. Device implies different selection and punching rules for coded characters frame interval and for character selection interval. EFFECT: minimized punching of tail characters. 23 cl, 9 dwg
