INFORMATION DETECTING RADIO SET

摘要

PURPOSE:To inform it to a listner in advance when the information required for the listner is broadcast by detecting a code signal before various information is broadcast and controlling on/off state of a radio set so as to raise an alarm signal. CONSTITUTION:An information detecting radio set has a conventional radio set 1 and a reception section 2 receiving normally a prescribed frequency and tuned thereto. The sound detection output is inputted to a differential amplifier 3 to light a LED 4 when the reception section 2 is in the reception state. An output of the detector 25 is inputted to code discriminators 7-10 which correspond a code signal to various information via a switch 5. The LED4 is lighted by applying a ower supply of the reception section 2 to set a switch 11 corresponding to the code dicriminators 7-10 according to the desired information. When a prescribed signal is received in this state, a logical level signal is outputted to an OR gate from the corresponding discriminators 7-10.