| 摘要 |
PURPOSE:To receive radio broadcasting through automatic switching of a selecting switch without operating the switch for an input selecting device by operating an alteration switch for receiving frequency bands of a radio receiver, a tuning switch or a dial. CONSTITUTION:When a receiving frequency band is switched by the frequency band alteration switch of the radio receiver 1 or the receiving frequency of the radio receiver 1 is tuned with the transmission frequency of radio broadcasting by a selecting switch or a tuning switch, a muting signal is outputted from a phase locked loop integrated circuit 6. Consequently, a tansistor (TR) 9 is connected, the input terminal of an integrated circuit 14 is earthed and the input level is turned to the low level, so that an electronic switch circuit 13 is turned to the radio input and an input signal from the radio input is outputted from the circuit 13. Thus, the input selecting device is switched to the radio input and radio broadcasting can be received. |
