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混合器的改进向英雄（湖南溆浦县广播电视局４１９３００）频道型混合器一般由带通滤波器、高通滤流器和低通滤波器组成，其主要优点是插入损耗小，具有一定的抗干扰能力，其缺点是调试难度大。相邻频道隔离度很差，在邻频系统中不能使用。由于滤波器采用了较多的可调元件...
Mixer improvements to the hero (Hunan Xupu Broadcasting and Television Bureau 419300) Channel mixer generally by the band-pass filter, high-pass filter and low-pass filter, its main advantage is the insertion loss is small, with a certain resistance Interference ability, the disadvantage is difficult to debug. Adjacent channel isolation is poor, can not be used in the adjacent frequency system. As the filter uses more adjustable components ...