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有线电视进入千家万户,给人们带来了高质量的视听享受,丰富了群众的文化娱乐生活,深受观众的喜爱。可是使用机械式调谐黑白电视机的用户遇到了难题:收看1～12频道节目效果很好,收看13～56频道节目效果不佳。有两个方法可以解决这个难题,并且可以让机械式调谐黑白电视机的用户能象彩电或电调谐黑白电视机用户一样将用户线一头插入用户终端盒,一头插入电视机后盖上的天线插孔上,就可以非常方便而又满意地收看到1～56频道的电视节目(并不需要转换开关)。
Cable into the tens of thousands of households, to bring people high-quality audio-visual enjoyment, enrich the cultural life of the masses, by the audience’s favorite. However, the use of mechanical tuning of black and white TV users encountered problems: watch 1 to 12 channel program works well, watching 13 to 56 channel program ineffective. There are two ways to solve this problem and allow users of mechanically tuned black-and-white televisions to plug one end of a subscriber’s line into a subscriber’s terminal box like a color television or a tuner for black-and-white television users, with an antenna plug inserted into the back of the television Hole, you can very easily and satisfactorily watched 1-56 channel television programs (do not need to switch).