DAYLIGHT WIRELESS.

Dominion, Volume 6, Issue 1732, 24 April 1913, Page 4

DAYLIGHT WIRELESS.

SYDNEY TO AWANUI. Some interesting daylight tests are being carried out between tho high-power wireless station at Pennant Hills and the high-power station at, Awanui, New Zealand, covering a distance 'over land and sea equal to about MOO nautical miles. These tests (states the "Sydney Morning Herald") are being conducted by an experienced staff of engineers and operators at tho stations between the hours of 11 a.m. and 1 p.m. Each message has been distinctly heard, taken down word for word, niid replied to without the slightest hitch, and owing to (lie continuity of the messages tho Australasian Wireless Compuny and the operating staff at cacli end nro naturally pleased with the results. I ho tests demonstrate that "daylight communication can bo mado between Sydney and New Zealand at any timo during both day and night. Several long-distance records have lately been recorded, reaching from 1800 to <1800 miles, but all referred to night signals. Tho circumstances, howovcr, aro very different, as the conditions for transmitting and receiving by wireless telegraphy, are much more favourable at iii°ht than in the daytime, (lie reason belli"" the extraordinary power exercised by tho daylight on Ihe electrical waves. It is very noticeable that directly the sun <ets tho' signals become much stronger, and invrnti.se in power towards midnight. \n additional proof that tho sun also has II direct influence nn the radiation of the electrical waves has been furnished in the ca=e of an eclipse of the sun. During nn eclipse the strength of the waves increases in a most marked degree. Tliu atmos- ! liberie, etfect on elcelrical waves passing between the Adelie Land wireless station and liu: stations erected in the Commonwealth and New Zealand on the "dark days" of the Antarctic is still tn lit) exploited, fliid should bo watched with illji'> " - " '