Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 17
ML= LINE WIRE=I550 80VGENERATOR —MW—1 … 80 V.GENERATOR Fig. 3 is flowing through any of the branches of the circuit and the relay armatures thereforerest on their back stops or spacing contacts at both stations. 8. If, in order to make a dot or dash signal, the key at the home station is now de- pressed to its marking position, the apex…
Telegraph
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