ITU-R M 493-13 FRENCH-2009 Digital selective-calling system for use in the maritime mobile service《海上移动通信业务中数字选择呼叫设备》.pdf

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ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

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