| 摘要 |
PROBLEM TO BE SOLVED: To provide a tuner for receiving a digital broadcast program that is simplified, downsized and that reduces the cost of a reception system which receives two different digital broadcast programs or receives/distributes one digital broadcast program, so that interference between the digital broadcast signals can be avoided. SOLUTION: A Y power distributor 21 is provided between the 1st RF amplifier 13 in a tuner section 2 and an RF AGC circuit 14 included in the 1st demodulation means. The one distributed RF signal is given to the 1st demodulation means. A changeover section 2 that selects an output signal from the 2nd RF amplifier 33 or an output RF signal distributed by the Y power distributor 21 and outputs the selected signal to the 2nd demodulation means is provided between the 2nd RF amplifier 33 of a tuner section 30 and an RF AGC circuit 34 included in the 2nd demodulation means. The changeover section 2 is provided with a switch control circuit 5 that conducts switching of each output signal and power ON/OFF of the 2nd RF amplifier 33 in interlocking with each other.
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