| 摘要 |
The device comprises the first signal input unit which inputs satellite signals, the second signal input unit which input radio signals, the first switch which inputs the satellite and the radio signals and outputs them selectively, the first voice signal detecting unit which detects FM voice signals from selective output signals of the first switch, the second voice signals detecting unit which detects AM voice signals from the output signals of the second signals input unit, and the second switch which inputs FM and AM signals from the voice signal detecting unit and outputs selectively.
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