With the number of FM broadcast pograms increased, the power capacity ofexisting FM antenna-feeder system in various regions, particularly in large and middle-sized cities cannot meet the requirements of development.

• 随着调频广播的发展,天馈线系统扩容与发射塔的天线安装空间有限的矛盾,成了制约调频广播发展的突出问题。