| 摘要 |
PURPOSE: A Multichannel Tuning Device is provided to enable users to tune at least two frequency channels by joining the common parts of each tuner. CONSTITUTION: A Multichannel Tuning Device is connected to one frequency connector (501) which is linked to an input cable. The device includes a phase locking circuit(533) which generates frequency and provides it to a primary block and a secondary block, a primary block which mixes the frequency and the outputted signal from one transceiver channel of UHF or VHF, a secondary block which outputs intermediate frequency by mixing a frequency generated from the phase locking circuit(533) and the signal from one data channel such as UHF, and a low frequency filter(535) which filters upstream signals. The device enables users to save material costs due to the simple wiring, and miniaturized versions are available.
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