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短波通信的研究与应用,随着单边带技术、分集接收、移频键控和高增益全向天线的采用,使短波通信质量有了很大的提高。特别是近十几年来,电子控制技术、电子计算机技术在短波通信设备中的应用,为遥控操作和程控操作,为短波通信逐步智能化提供了必要的条件。那么,怎样提高通信效率或在交流供电失压时又能完善地保存存储器
Research and application of shortwave communication, with the single-sideband technology, diversity reception, frequency shift keying and high gain omnidirectional antenna adoption, so that the quality of short-wave communications has been greatly improved. Especially in recent ten years, the application of electronic control technology and electronic computer technology in shortwave communication equipment has provided the necessary conditions for the gradual intelligent development of shortwave communication for remote operation and programmed operation. So, how to improve the communication efficiency or save the memory when the AC power loss