ITU-R REPORT BO 809-3-1990 Inter-regional sharing of the 11 7 to 12 75 GHz frequency band between the broadcasting-satellite service and the fixed-satellite service《卫星广播业务和卫星固定业务在1.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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