Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 30
ly transmitting and recording in Roman characters on message blanks one mes-sage per channel in each direction. 49. In actual construction many refinements and additions have been found necessary.These are all taken up under the description of each individual unit. The foregoingcovers only the… … Table of Contents Section 2 Multiplex Specifications 263-C The Western Union Telegraph Company SPECIFICATIONS FOR THE MULTIPLEX PRINTING TELEGRAPH SYSTEM SECTION 2MULTIPLEX DISTRIBUTOR AND ITS ASSOCIATED APPARATUS These Specifications are the property of the Western UnionTelegraph Company and shall…
Telegraph
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