一、通信发展史的简略回顾最近几年来，无线通信的发展势头明显加大加快，引起广大通信科技工作者的密切注意．回首当年马可尼发明无线电，利用短波试验越洋通信成功，真是伟大壮举，全世界人们都由衷地祝贺。后来，无线通信普遍用于国际通信。30年代，上海便有了国际电台，50 First, a brief review of the history of the development of communications In recent years, the momentum of development of wireless communications significantly increased to speed up, aroused the close attention of the majority of communications technology workers. Looking back at Marconi’s invention of the radio that year, it was a great feat to use the success of short-wave trial of oceanographic communications and people from all over the world heartily congratulated him. Later, wireless communications were generally used for international communications. In the 1930s, Shanghai had an international radio station, 50