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前言在单边带通信机还没有大量装备时,为了解决使用电传打字机代替人工电报和利用原来的等幅报通信机与单边带通信机互相通信的问题,一般是在发信电台中采用移频附加器(即移频激励器)来代替原来等幅通信机中的频率源和在接收机后面增加一移频终端机来完成电传通信。移频激励器为了要和单边带互通电传印字报,因此必须具有较高的频率稳定度,一般采
Preface In the single-sideband communication machine is not a lot of equipment, in order to solve the use of teletype instead of manual telegraphy and the use of the original telegraph and single-sideband communication machine to communicate with each other, generally used in the sending station Frequency-shift adjusters (frequency-shift exciters) are used instead of frequency sources in the original equal-amplitude communication and by the addition of a frequency-shifting terminal behind the receiver. Frequency-shifting exciter In order to exchange information with the single-sided telegraphy printed newspaper, it must have a higher frequency stability, the general mining