WIRELESS TELEPHONY

Otago Witness, Issue 3571, 22 August 1922, Page 42

WIRELESS TELEPHONY

SOME AUCKLAND EXPERIMENTS. (From Our Own Correspondent.) AUCKLAND, August 17. Developments that have taken place lately in the realm of wireless have caused some remarkame feats to be accomplished by experimenters. In Auckland one who has been carrying on experiments for many years reports having “picked up” a powerful station at Carnarvon (Wales) using only a single detector circuit. He has also hjard messages from the Aquitania and Mauretania when crossing the Atlantic, and he distinguished a call from the Olympic leaving Southampton for New York. Dorset stations, trance, Germany, South Africa, India. China, and eapan have been frequently heard by this observer, while it is an everyday occurrence to hear the United States and the islands of the Pacific. Interesting observations on experiences while "listening in” are described by Mr G. M‘B. Salt, demonstrator in physics ar, the Auckland University College, who referred to the fact- that it was possible to hear high-powered stations at Lyons, Bordeaux, and St. Assise, in France, only at certain times of the day. The station at Nauen, just outside Berlin, has been heard by Mr Salt at certain times of th e day, and also stations in Rome, Japan, the United States, and other places. All the Australian coastal stations working ships were heard with great distinctness. Professor R. Jack, of Dunedin, had followed Home boats for seven days out, which meant something well over 2000 miles, and had heard a warship’s wireless 4000 miles away. Dealing with wireless telephony. Mr Salt said that Professor Jack had been heard very distinctly at Hamilton, and he had also been picked up once at Auckland University College. Permission had been given him to use much higher power, in which ease he should be heard distinctly in all parrs of New Zealand, and possibly also in Australia. A station at Melbourne had been picked up in New Zealand with the use of only one valve.