It is clear from studies of frequency sharing between the fixed-satellite service and terrestrial radio-relay systems and between different fixed-satellite networks that, to ensure that mutual interference between the systems is kept to a tolerable level
ITU-R S.446-4-1993由国际电信联盟 IX-ITU 发布于 1993-01-01。
ITU-R S.446-4-1993 在中国标准分类中归属于: M70 广播、电视设备综合,在国际标准分类中归属于: 33.060.30 无线中继和固定卫星通信系统。
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