| 摘要 |
PURPOSE:To cut off a noise generated in channel switching and the sound output of an undesired channel by operating a switch which stops or degrades the receiving function of a tuner by utilizing the forward/backward operation of an operating shaft. CONSTITUTION:The switch which stops or degrades the receiving function of the tuner is provided, and this switch is operated during the forward movement of the operating shaft to hold this state until the operating shaft is returned. When an optional push button 12 is pressed to hold a desired channel selection shaft in a forward/backward movement state, a channel stored by the channel selection dowel that the channel selection shaft has is selected. On the other hand, when an operating plate 35 traverses to left by the forward movement of the operating shaft 1, a switch 40 which normalizes the receiving function of a receiving circuit in an on state held so far turns off to stop or degrades the receiving function, and this state is held while the operating shaft 1 moves forth and back once. Consequently, the mixing of the noise generated in channel switching and the channel selection sound output of an undesired state caused by the motion of a variable tuning part 43 which is varied following up the forward/backward movement of the channel-selection shaft are evaded. |
