| 摘要 |
In this circuit which enables receiving all-band channel through selecting required channel signal from UHF and VHF channel as a receiving-band conversion means, and through converting VHF channel signal to UHF channel band, receiving-band conversion is accomplished by means of connecting the first industor (20) to the second inductor (21). The tuning circuit is comprised as a double-tuning circuit when receiving VHF channel signal through connecting switching diode (31) to VHF channel signal input, and as a single tuning circuit when receiving UHF channel signal through conducting said switching diode.
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