IMPROVEMENT IN TELEPHONY
[British Official Wireless] RUGBY, 12th January. Speaking at the Institution of Civil Engineers. Sir George Lee, chief engineer of the Post Office described the development of the co-axial cable bv which 400 telephone conversations can be carried on at one time on one cable
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https://paperspast.natlib.govt.nz/newspapers/NEM19380114.2.62
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Nelson Evening Mail, Volume LXXI, 14 January 1938, Page 5
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47IMPROVEMENT IN TELEPHONY Nelson Evening Mail, Volume LXXI, 14 January 1938, Page 5
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