London, May 21.
A secret process for defeating night bomber planes by the use of radio receivers was mentioned by the Canadian Minister of National Defence, Mr. C, G. Power, in an appeal for radio technicians for the Royal Canadian Air Force, it is learned in London, Mr, Power said the system was elaborated by British scientists working in collaboration with research experts of Canada and the United States, "Details are naturally secret," Mr. Power asserted, "but I can say that, in general terms, it means that by using a great number of small radio sets of modern design technicians posted at ground points all over the British Isles will be able to detect enemy planes in the air and direct anti-aircraft fire with deadly precision,"
He added that the British Air Ministry "expects great things of this invention, but it calls for men to make it work,""—Reuter,
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