Voice-frequency telegraphs
作者:
W.Cruickshank,
期刊:
Journal of the Institution of Electrical Engineers
(IET Available online 1929)
卷期:
Volume 67,
issue 391
页码: 813-831
年代: 1929
DOI:10.1049/jiee-1.1929.0088
出版商: IEE
数据来源: IET
摘要:
After defining the title of the paper, the author proceeds to discuss the position of telegraphs in this country, comparing it with those of Germany and the United States. Multiplex a.c. transmission is considered and the limits to its use are determined. A description of the various systems in use follows, and proposals are advanced for its wider adoption in this country. The main arguments against its adoption are economic, but some technical criticism is included.
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