FIELD: broadcasting. SUBSTANCE: unit for selection of packages of components of signal specified beforehand from stream of packages of signal includes control unit that responds to selection of user and to transmitted indicator for determination of codes of identifiers of packages (SCID) for components of proper program. Identifiers of proper programs are stored in programmed registers 13. Identifiers from proper packages of stream of signals are consistently loaded into additional register 14. Comparison circuits 15 related to programmed registers compare stored identifiers with identifiers of packages from stream of signals. Output signals from corresponding comparison circuits control usage of proper packages of components of signal from stream of signals. Identifiers in proper programmed registers are programmed in certain sequence to prevent occasional reception of unwanted data by system. EFFECT: development of unit for selection of components of sense selected beforehand containing transmitted program. 10 cl, 7 dwg
