New German Wireless Discovery -- The television decimetre wave-sender (right), and the television transmitter and receiver for 10 centimetre wave.The German wireless industry recently demonstrated a new discovery to the press, in Berlinl. It is the decimetre wave (length under one metre), which can be sent out in any desired direction, unlike other wave-lenghts, which spread in all directions. July 22, 1935. (Photo by Keystone).