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Show Helps Keep Broadcasters to Own Wave Lengths ---- H t'vlt 1 1 V I, 1 $P $ f V 1 Ell Wh ? ? 1 vr A x J .w - if j t , I Li Dr. J. H. Deilinger, chief of the radio laboratory of the bureuu of standards, is seen examining a frequency indicator, in-dicator, which is a device thnt enables radio broadcasting stations to keep on their respective wave lengths when broadcasting. This radio laboratory has not only designed a frequency Indicator but will test indicators In use by commercial concerns In order that transmitters may keep on the wave lengths assigned them. |