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中国有线电视70年代的第20年,经过这些年的发展,从小到大,从没有到现在发展的情况。现在,已经发展成为一个新的事业,在中国的广播和电视领域。中国的有线电视技术,自力更生,从零开始,引进国外先进设备和系统开发技术是非常快。从VHF频段,860MHz是地铁有线电视网络系统,其他的通道天线系统均为750MHz,从相互混合的使用同轴电缆传输电缆,电缆和MMDS多传输技术,从单一的
The first 20 years of China’s cable television industry in the 1970s, after all these years of development, from small to large, never developed to the present situation. Now it has developed into a new undertaking in the field of broadcasting and television in China. China’s cable television technology, self-reliance, from scratch, the introduction of foreign advanced equipment and system development technology is very fast. From the VHF band, 860MHz is a metro CATV network system, the other channel antenna systems are all 750MHz, mixed from each other using a coaxial cable transmission cable, MMDS cable and multi-transmission technology, from a single