| 摘要 |
PURPOSE:To prevent deterioration in noise index during TV reception of the UHF band and to improve reception performance by avoiding the UHF-band TV signal through a TV/FM broadcast changeover switch. CONSTITUTION:An UHF-band and a VHF-band signal and a VHF-band FM signal which are received by an antenna 1 are inputted to an UHF/VHF signal branching filter 6', and the UHF-band TV signal is led out from an output terminal 8 and supplied to a tuner 9 for TV broadcast reception. The VHF-band TV signal and FM signal are led out at the other output terminal 1' and sent to the TV/FM broadcast changeover switch 3' to supply the VHF-band TV signal to the tuner 9 and the FM signal to a tuner 14. Thus, the UHF-band TV signal is not passed through the switch to reduce loss in the switch and the disorder of the impedance of the signal system. |
