New wireless teletypewriter. Washington, , Oct. 15. A new radio teletypewriter service permitting instantaneous transmission of written records without the aid of wires, has been perfected by the experts of the Bureau of Air Commerce, Department of Commerce. Commerce officials said a chain of teletypewriters could be operated by radio at great distances and even in an airplane in flight. In this picture the new machine is being operated by Ladd, at the Bureau of Air Commerce field at Silver Hill, MD

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