Washington inventor says ignition interference from airplane engines is a myth. Ignition interference from airplane engines on aircraft is largely a myth according to C. Francis Jenkins, Washington, D.C., inventor who has designed a radio receiving set which he does not pick up noises from a flying

Government plane completely equipped for testing radio and lighting. Captain F.C. Hingsburg, Chief of the Airways Division of the United States Department of Commerce, and a Government airplane that has been completely oufitted as a flying laboratory for testing radio and lighting systems along the

The first radio beacon is inaugerated. An executive photograph showing Dr. George K. Burgess, Director fo the United States Bureau of Standards, and the aircraft radio beacon at College Park, Maryland, designed for guiding airplanes by radio. This is the first radio beacon for use of civil aviation

A Veteran Inventor. About 6 miles from Washington, on the edge of the little hamlet of Hyattsville, Md., may be found Dr. James Harris Rogers, wizard inventor, now 80 years old, retired from his work but still erect and energetic It was Dr. Rogers, who during the war proved that water as well as ear

Air engine tester. Dr. K.C. Dickinson, Chief of the Heat and Power Division of the Bureau of Standards, and the control room of the new aircraft engine testing laboratory at Arlington, VA. Here all engines for use on licensed airplanes are to be tested and to protect the observer, the control room a

Government expert listens to broadcasts of automobile. The Automotive Section of the Bureau of Standards is studying the anti-knock proportion of fuel used in automobile and aircraft engines and the scientist in this photograph is "listening in" to the signals of an engine instead of listening

Motion pictures by radio coming soon. Motion pictures by radio is very near, predicts C. Francis Jenkins, who has designed this small radio- vision receiving set for use in the homes. It is only a few inches square and is attached to the regular radio receiving set. A miniature motion picture screen

Washington, D.C., inventor C. Francis Jenkins

U.S. Chief Signal Officer (G.S.Gibbs?) inspects new radio equipment for talking to Aviators in flight. The new aircraft-radio equipment designed by both the Signal Corps of the War Department permits of both radiotelephone and radiotelegraph communication, sending, receiving, at the same time. The a