| 摘要 |
PROBLEM TO BE SOLVED: To prevent the flow of television signal of a frequency band to be received into a high frequency amplifier for amplifying the television signal of the other frequency bands, and to simplify wiring for switching by switching a frequency band to be received with one switching voltage. SOLUTION: The tuner is provided with a first high frequency amplifier 4 for amplifying the television signal of a first frequency band, a second high frequency amplifier 5 for amplifying the television signal of a second frequency band, a first tuner circuit 2 interposed between an input terminal 1 and the first high frequency amplifier 4 and for passing a first television signal and a second tuner circuit 3 interposed between the input terminal 1 and the second high frequency amplifier 5 and for passing the television signal of the second frequency band. When receiving the television signal of the first frequency band, the input terminal of the second high frequency amplifier 5 is grounded in terms of high frequency and when receiving the television signal of the second frequency band, the input terminal of the first high frequency amplifier 4 is grounded in terms of high frequency.
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