ULTRA SHORT WAVES
IMMENSE POSSIBILITIES MARCONI MUCH IMPRESSED LONDON, Dec. 4 In a lecture in London Senator Marconi revealed that recent short-wave radio experiments had resulted in communication over a distance of 163 miles on a 57 centimetres wave-length.
He said that the possibilities of ultra short waves were immense, as they were not affected by fog and gave a high degree of secrecy. He was considering their application to broadcast ing and television.
For some months Senator Marconi has been conducting experiments concerning radio transmission by means of ultra short waves of low power and with poi table, refiectoin The results were pronounced by Marmni himself last August as "successful" and as "extremely important " Tests were made in that month with a wave-length of 22J,- inches, and clear communication by radio telegraphy and by radio telephony was established between Hocco da Papa, near Rome, and Cape Figari on the north-east, corner of Sardinia—a distance of 167 miles across the Tyrrhenian Sea. Rocco da Papa is a little over 2000 ft,. above sea level. Representatives of the Ministry of Communications were present during the experiments, which Marconi directed from on board his yacht Elettra lying in Aranci Ray, near Cape Figari. The importance of the experiment lay in the proved possibility of communicating by ultra short waves over greater distances than hitherto considered theoretically possible on account of the curvature of the earth. The power required for this ultra short wave transmission is so low that no generating machinery is needed —accumulator power sufficient to light, say, a 50 candle-power lamp being all that is required. Tho set is, therefore, as small and handy as a portable typewriter. The waves being directional 'beam, transmission is absolutely secret, and cannot be tapped, and the set can be quickly transferred from place to place, and is, of course, easily concealed. The military importance of all this is obvious.
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Bibliographic details
New Zealand Herald, Volume LXIX, Issue 21358, 6 December 1932, Page 9
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316ULTRA SHORT WAVES New Zealand Herald, Volume LXIX, Issue 21358, 6 December 1932, Page 9
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