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在我国广大农村和远离电视台的地区,使用室外天线才能收看到好的电视节目。我们在维修过程中经常有这样现象:电视机本身没毛病,查天线高度够,方向正确,馈线和振子之间接触良好,可就是收不到电视节目。查原因是:在从天线到电视机所用的馈线上有石灰(也称白灰),使电视信号在传输过程中受到损失,造成电视效果变坏。我国人民逢年过节喜欢把屋里整理干净。特别是广大农村都习惯用石灰加食盐刷墙,不小心把墙上的馈线也刷上了石灰。这样,电视
In the vast rural areas of our country and away from the television stations, outdoor antennas are used to watch good television programs. We often have this phenomenon in the maintenance process: the TV itself is faultless, check the antenna is high enough, the correct direction, the contact between the feeder and the oscillator is good, but can not receive the television program. The reason is: in the feed from the antenna to the TV with lime (also known as lime), so that the loss of television signals in the transmission process, resulting in deterioration of television. Our people like to clean the house during the holidays. In particular, the vast majority of rural areas are accustomed to salt and salt with salt brush wall, accidentally put the wall feeder brush on the lime. This way, TV