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电缆系统改造一法□洪健（浙江省象山县有线电视台３１５７００）随着光电子技术的发展，光导纤维在有线电视领域的应用也得到了推广。目前许多有线台已经或准备将原有的３００ＭＨｚ、４５０ＭＨｚ的电缆网络改造成为光电结合的５５０ＭＨｚ网络。而且放大器均控制在三级...
Cable System Reform □ Hong Jian (Zhejiang Xiangshan County Cable Television 315700) With the development of optoelectronic technology, optical fiber applications in the field of cable television has also been promoted. At present, many cable stations have been or are planning to transform the existing 300MHz and 450MHz cable networks into optoelectronic 550MHz networks. And the amplifier is controlled in three levels ...