HD 236 11 S1-1990 Methods of Measurement for Radio Transmitters Part 11 Transposers for FM Sound Broadcasting《无线电发射机测量方法 第11部分 调频广播转播站》.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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