DUPLEX TELEGRAPH?

Thames Star, Volume IIII, Issue 1752, 14 August 1874, Page 3

DUPLEX TELEGRAPH?

By means of the system of duplex telegraphy -which Mr. Lemon, the General Manager of the Telegraphic Department, ' has, with considerable ability, perfected for himself, it is acknowledged that a great saving has been effected to the colony. There has unquestionably been saved the cost of a new cable across Cook's Strait, an expense which, with the increase of telegraphic business and the cheap rates at which Press messages are now transmitted, would very shortly have required to be incurred- As it is, by means of the duplex system, two operators can stand at eacVendof a wire, and transmit and teceivo simultaneously two messages., one from each end of the wire, the double current of electricity passing from both ends, and delivering the signals »s rapidly and without interruption as if on ]A^p message were being transmitted. Mr!lK6n, who by great pains'worked out this smithed-on'a principal of his own, has received the thanks of the Government, and will probaHy be more substantially regarded by Parliament. There is no reason' why^multiplex system, that by which ary number of messages may be simultaneously sent along a single wire, or, atjeast, a number sufficiently largest© warrant the appellation of multiplex. If this shall be rendered possible, added celerity' in the dispatch of business^ and greater, cheapness; of construction, will be ataong the advantages accompanying the discovery^Cross. • ; ..v".'/,'.'