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1概述天线是广播、电视发射的重要设备。一般来讲新架设完的天线，馈线系统，通过交验投入使用之后，就需要加强管理和维护。因为在这个时期，天线系统最容易暴露出安装中存在的“隐患”。尤其是短波发射天线，它种类繁多，造价高，占地面大，制作与安装都比较复杂。这种天线通常
1 Overview Antennas are important equipment for radio and television transmission. In general, the newly erected antenna, feeder system, put into use through inspection, you need to strengthen management and maintenance. Because during this period, the antenna system most likely to expose the installation of “hidden dangers.” Especially the shortwave transmitting antenna, it is a wide range of high cost, accounting for large surface, production and installation are more complicated. This antenna is usually