| 摘要 |
PROBLEM TO BE SOLVED: To enable regulating of a tracking error even without SSG. SOLUTION: A receiver comprises a synthesizer type receiving circuit 10A of a superheterodyne type using an oscillation signal of a VCO 21 of a PLL20 as a local oscillation signal, and a similar receiving circuit 10B. A normally open switch 41A is connected between an output terminal of the VCO 21 of the circuit 10B and an input terminal of an antenna tuning circuit 12 of the circuit 10A. A normally open switch 41B is connected between the output terminal of the VCO 21 of the circuit 10A and an input terminal of the tuning circuit 12 of the receiver 10B. When the switch 41A is closed, a state in which the tracking error of the receiver 10A can be regulated according to the oscillation signal of the VCO 21 of the circuit 10B is set. When the switch 41B is closed, a state in which the tracking error of the circuit 10B can be regulated according to the oscillation signal of the VCO 21 of the circuit 10B is set.
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