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一、前言 日本对FPU传送的微波频率重新进行了分配,从1997年4月1日起更改为新的频率。由于与FPU指配频率的窄带化相对应和设备的老化,日本电视公司更新了东京塔的FPU接收天线和旋转装置。
I. INTRODUCTION Japan has redistributed the frequency of microwaves transmitted by the FPU from April 1, 1997 to the new one. Due to the narrower banding of the FPU assignment frequency and the aging of the equipment, Nippon Television Company updated the Tokyo Tower’s FPU receiving antenna and rotating device.