| 摘要 |
PURPOSE:To minimize the adverse effect due to harmonics from a limiter amplifier, by activating the limiter amplifier only at the automatic channel selection. CONSTITUTION:A control signal generating circuit 18 generates a control signal at the automatic channel selection only and turns on a switch means 6. As a result, an IF signal is supplied to the limiter amplifier only at the automatic channel selection. Thus, the limiter amplifier 7 is made active only at the automatic channel selection. Further, the circuit 18 is used in common with an AFC control circuit. |
