TELEPHONE DEVELOPMENT.

New Zealand Herald, Volume XLVI, Issue 14147, 24 August 1909, Page 4

TELEPHONE DEVELOPMENT.

Improvements have been made in con- j struction of telephones of such a character as to make telephonic connection possible for a distance of no less than 2500 miles. This means that it will soon be possible to speak to a friend in any part of New Zealand no matter how remote, providing it is possible to get connected. It is not difficult to see how markedly this would revolutionise business methods. The Acting-British Consul at Stockholm gives details- of the new invention. He says that the inventors are two Swedes, Messrs. C. E. Enger and J. C. Holm, strom, the former being chief engineer in the Stockholm telephone administration, and the latter the president of the Telegraph Company's training establishment. By this invention they claim that telephonic communication can be obtained over a distance of 2500 miles with perfect clearness. This new invention has not only made telephonic communication possible between Berlin and Stockholm, but has opened the door to the possibility of communication over a much greater distanced The invention is a microphone, which has increased the sounding capabilities by 100 per cent. Recent experiments have given excellent results at a distance of 4000 kilometres (2500 miles) with 4.5 mm. copper wires, of 2000 kilometres with 3 mm. copper wires, and of 400 kilometres with 4 mm. iron wire. To achieve this result the apparatus has had to be made 40 to 50 times as powerful .is that formerly in use.