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'© C1B651612
FEB 2^ 1925 /
RADIO BROADCAST
Vol. 6, No. 5
March, 1925
New Fields for Radio
The Next Will Be a "War in the Air" — A Consideration of the Possibilities that Radio Has Brought About
By D. C. WILKERSON
T T WAS almost inevitable that such an art as radio — for so is the science of radio now classified — with so many new and undeveloped channels for expression, would carve a way into the rank of indispensable resources for national protection and aggression.
In the late World Wrar, the pressure of combat was so tremendous and immediate that a leisurely investigation of the possibilities of radio was impossible, and it was only during the latter days of the war that the full measure of its advantages were practically, realized.
At the beginning, there were few vacuum tubes in use by either of the Allied or Central Power field or naval forces. This De Forest invention had not received the attention nor had it been developed enough through experiment to make it a worth-while adjunct to military intelligence. The twoelectrode Fleming valve up to 1914 had enjoyed considerable vogue, but it was
— Photograph Courtesy U. S. Air Service
CLUMSY AERIAL ELEPHANTS Such as this "blimp" will be easy prey for the radiocontrolled airplane, equipped with incendiary bombs or bullets
unstable, and was regarded more as a laboratory toy than a practicable work-a-day device.
The French, Italian, German, and English electrical engineers, under the incessant demands for better and more reliable means for establishing and maintaining radio communication in the surges and stress of the battle front, started developing the vacuum tube with a vengeance, and by the time that the United States entered the war in 191 7, had covered considerable ground in the development of the vacuum tube. Parallel with foreign efforts in this direction, the Western Electric, General Electric, Westinghouse, De Forest, and Bell Telephone engineers were beginning to produce real results with the threeelement tube and they had made for the United States Government a fairly stable and reliable product.
The vigorous plunge of our forces into the front line trenches rekindled the enthusiasm of