| 摘要 |
PROBLEM TO BE SOLVED: To provide an offset beat canceler capable of suppressing the replacement of components except the local oscillator in the case of changing the receiving range of a channel selection part. SOLUTION: A UHF channel selection part 30 of the offset beat canceler selects a television broadcast signal of a predetermined broadcast channel specified by a selected channel control signal from a control part and outputs a video intermediate frequency signal and an audio intermediate frequency signal. The respective local oscillators 80a, 80b, 80c are constituted so that an oscillation signal of a frequency range in which television broadcast signals of UHF broadcast channels, for example, within ranges of 13 to 29, 30 to 46, 47 to 62ch are selected is outputted. The UHF channel selection part 30 is further constituted so that any one of the local oscillators 80a, 80b 80c is selectively mounted by providing a first connector 73 and a second connector 74. Then, the television broadcast signal is selected by using the oscillation signal to be outputted from the mounted local oscillators. COPYRIGHT: (C)2005,JPO&NCIPI
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