Circuit for selective audio reception of multiplex broadcast radio signals of a television set

摘要

The invention relates to a circuit for selective reception of multiplex broadcast radio audio signals of a television set which receives mono signals, which circuit is designed for selective reception of two-language broadcast radio signals. By arranging a 4.724 MHz band-pass filter in parallel with a 4.5 MHz band-pass filter of a television set for reception of mono signals, the outputs of the 4.5 MHz or 4.724 MHz band-pass filter are emitted selectively, and a synchroniser is synchronised to 4.5 MHz or 4.724 MHz, depending on the switching state of the switch.