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在广播电视台的无线发射系统中,发射天线和馈线是重要的组成部分。大部分电视台,发射机都有主、备机,而天线却很少有主、备天线的,始终保持发射天馈线良好运行状态是个长期而艰巨的工作。通过多年
In the radio and television broadcasting system, transmitting antenna and feeder is an important part. Most of the television stations and transmitters have main and standby machines. However, there are few antennas for the main and backup antennas. It is a long-term and arduous task to always keep the transmission antennas in good working order. Through many years