WIRELESS TELEPHONE.

Nelson Evening Mail, Volume LIII, Issue 104, 3 May 1919, Page 5

WIRELESS TELEPHONE.

RAPID DEVELOPMENT. The rapid development of the wirelesi~ Telephone is one of the romances of the war. In 1914 the wireless telephone was still in the experimental stage, and was regarded as a kind of promising side-line to wireless telegraphy. But when the aeroplane began to be largel yused for reconnaissance and for directing artillery fire, the demand for some more easy and flexible mode of communication from the air to the land became urgent. British inventors responded magnificently to the call, and the crude apparatus of 1914 : became raipdly perfected, so , that it could, be relied upon m speaking between aeroplanes and land stations up to fifteen miles and beyond. •Owing to the necessities of secrecy, very little was known to the public about the improvements which had been effected, but their extent may he judged b v the tribute paid by the director of an American electrical company which had been engaged on the same field. He has stated that British wireless telephones were better, m range, and reliability, than any which had been produced elsewhere. In the. development of commercial aviation, wireless telephony, a* well as wireless teletrraphy. is likely to play an important part, since the.safety of the service de-, pends upon maintaining contact .with aerodromes and , aeroplanes, hut aviation is far from being the only field of ap* plication. The wireless' telephone, may supplement the newspaper < as a, means of international communication. As was pointed out by a leading British man. of science, Mr Campbell bwinton, F.R.S., a speech delivered in London m’flv be heard simultaneously in Calcutta,' Cairo. Pans, Pelrograd, New York and on vessels in mid-ooean; and by the use of loud speaking telephones large audiences may listen to the transmitted tones as ?f they Were being addressed by the original speaker.