BY WIRELESS

Evening Post, Volume CX, Issue 50, 27 August 1930, Page 9

BY WIRELESS

DESCRIBING THE TESTS

PICTURES TRIED

(From "The Post's" Representative.) SYDNEY, 21st August.

Tho ball-to-ball descriptions in Australia of the Test cricket matches played in England have provided wireless in the Commonwealth with one of the best advertisements it is possible to imagine. Thanks to tho elaborate arrangements made by tho Sydney station 2UW, with the co-operation of Amalgamated Wireless (Australasia), Ltd., these descriptions have been most vivid, aud on Test nights thousands of people throughout Australia have been known to sit up until the early hours of the morning. Tired-eyed workers in the city havo told tho tale.

Not content with these graphic descriptions, attempts have been made by Amalgamated Wireless, whoso' beam service has been of such aid in providing the descriptions, to secure wireless pictures of the Tests, but theso have not been successful enough to permit of reproduction.-

"It is as yet purely a matter of experiments," said Mr. E. T. 3?isk, general manager of Amalgamated Wireless. "Wo have been working for a long time with experimental equipment and collecting valuable data, but no attempt can be made yet to provido a dependable service such as the wireless telephone to London, until s now equipment is received. This equipment should be on its way now, but it is too early yet to say when it will be in working order. Meanwhile it is just a matter of waiting for suitable conditions for transmissions and then doing our best to get through. We will try again." Pictures of the third Test were put on the air in London, but at the first attempt the atmosphere was not kind and the signals failed to reach Australia in sufficient strength to reproduce. Much the same happened when the fourth Test pictures wero sent across the globe. .Other picturos sent from London have been received fairly well, and it seems only a matter of time beforo they are perfect. The picture impulses which are sent from London are picked up at the Sydney station at.La Perouso and are repeated over a land line to headquarters in the city. The actual picture apparatus measures about 24in long by lOin wide by lOin high. The picture itself is recorded on paper which is firmly affixed to a revolving drum, which is rotated at a speed a little faster than the speed at which tho transmitting drum is being rotated. It is kept in step by a synchronising apparatus. Tho tiny electrical impulses which form the picture element are permitted to pass through a paper which is affixed to the drum, and in passing causes electrolysis, which gives rise to a dark or light brown colour on the otherwiso white paper, and with the different degrees of depth' colour the picture.