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调频广播因其优秀的音质和抗干扰性能而成为城市广播覆盖的主要手段。随着城市规模的日益扩展,调频发射台的功率也跟着成数量级地增大,由原来的100W、300W上升到1KW、3KW、甚至10KW,而发射天线的高度也由几十米上升到百余米甚至三四百米。已经逐步形成高塔大功率覆盖的格局。
FM radio has become the main means of coverage of urban broadcasting because of its excellent sound quality and anti-interference performance. With the increasing expansion of the city scale, the power of FM transmitters has also been increased by an order of magnitude from the original 100W and 300W to 1KW, 3KW and even 10KW, while the height of the transmitting antenna has also risen from tens of meters to over a hundred Meters or even three or four hundred meters. Has gradually formed the pattern of tower high power coverage.