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马可尼公司生产的6150型和6158型调幅/调频信号源使用耿氏振荡器,频率范围分别可达10～15和8～12.4千兆赫。通过一个外部控制信号来激励这类信号源可进行远距离地预置或扫描微波频率。这类信号源由
The 6150 and 6158 AM / FM sources produced by Marconi use the Gunn oscillator with frequencies in the range of 10-15 and 8-12.4 GHz, respectively. Excitation of such a signal source with an external control signal allows remote presetting or scanning of the microwave frequency. This type of signal source