| 摘要 |
PURPOSE:To call an FM station which is tuned to a preset FM wireless microphone and to mix signals immediately by providing a preset type FM tuner and an input selector and turning on a mixing switch. CONSTITUTION:For example, a phono 11 is selected by the input selector 1. The phono signal from a source output terminal 14 is applied to the input terminal 51 of a mixing amplifier 5. THen when a mixing switch 4 is turned on, a voltage is supplied from a power source 6 for a control IC3, which calls an FM station tuned to the preset FM wireless microphone. An FM signal applied to a tuner output terminal 21 is passed through a mixing switch 6 and mixed with the phono signal. The output terminal 52 of the mixing amplifier 5 is connected to a power amplifier and a speaker. |
