| 摘要 |
The circuit applies the control voltage to the selected local oscillator for obtaining adequate intermediate frequency corresponding to the satellite or TV Broadcast. The circuit comprises a data input circuit (7) for inputing the selected mode, a control circuit (8) generating control voltage for an input selection circuit (9) and an output selection circuit (14), a frequency divider (10) deviding the selected mode frequency, a phase detector (12), and a low band filter (13).
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