| 摘要 |
PURPOSE:To attain the operation as a diversity receiver by using an indenpendent local oscillator when two receivers receive different frequencies respectively and using any local oscillator when they receive the identical frequency in common. CONSTITUTION:Two reception systems are provided and in case of the operation such as searching of a station broadcasting the same content or a traffic information station, a control circuit 10 selects the position A to a changeover circuit 14 to stop the operation of a multi-path detection and comparison circuit 12 thereby allowing a changeover circuit 13 to select the position A. Thus, a reception system 9a acts as a system receiving a frequency and a reception system 9b acts as a system searching an in-band signal with a prescribed purpose. In this case, the reception systems 9a, 9b are independent. On the other hand, in case of the operation as a diversity receiver, the circuit 10 allows the circuit 14 to be connected to the position B, an output of a local oscillating circuit 6a of the reception system 9a is inputted to a mixng circuit 4b of the reception system 9b and the reception systems 9a, 9b receives the same frequency. The circuit 12 is actuated at the same time to allow the circuit 13 to select a frequency with less multi-path disturbance and the sound is outputted from a speaker 16. |
