目前,城市中有些家庭已拥有两台、甚至多台电视机,于是需解决一条有线电视馈线同时供几架电视使用的问题。若只是简单的将几台电视机信号输入线并联起来,接在一个有线信号源上,由于阻抗严重失配,会出现图象模糊不清并伴有网纹干扰,严重影响接收效果。解决的办法是:采用射频分配器将电视信号分成几路,传递给每台电视机,以保证图象质量。下面介绍两种有线信号分配器的自制方法。 At present, some families in the city already have two or even more television sets, so the problem of using one CATV cable for several TV sets at a time is solved. If only a few TV signal input lines in parallel, connected to a cable signal source, due to a serious mismatch in impedance, there will be blurred images and accompanied by moire interference, seriously affecting the receiving effect. The solution is: the use of radio frequency divider TV signal is divided into several channels, passed to each TV, to ensure image quality. Here are two methods of home-made cable signal distributor.