| 摘要 |
PURPOSE:To always obtain an accurate demodulation data and to ensure the interruption processing by an interruption data by selecting a frequency of same network excellent in a reception data. CONSTITUTION:In the standby state of TA interruption, when an unlock detection signal is consecutive for a prescribed time, a PI data and a reception frequency obtained from the existing reception broadcast wave are stored while taking it that the reception state disabling the demodulation of the data from the reception broadcast wave takes place. When a reception signal level obtained from a level detection circuit 17 is a set level or over, the signal level of the reception frequency is fetched and stored in a memory 15 corresponding to each AF data. When the PI data representing the network station of the reception station is coincident with the PI data stored in the memory 15, the station frequency of the same network during reception at present is switched to a new reception frequency. |
