Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 17
nnected tothe line wire, while the other is connected to ground through a resistance AL of 2090ohms. The remaining ends of both windings are joined together and the junction apexor split point (as it is often called) connected to the lever of a 3-point key for signaling.With the keys at both… … ML= LINE WIRE=I550 80VGENERATOR —MW—1
Telegraph
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