American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 331
sistance of about 180 ohms, as indicated. BALANCING A CABLE DUPLEX. At one time the procuring of a balance on a long submarine duplex cable wafta matter requiring much skill, but of recent years the actual cable is so closely dupli-cated by the artificial cable that it has become a comparatively…
Telegraph
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