Description

Wilmer Lanier Barrow adjusts a radio antenna. Technology Review, June 1938, p. 368.

Original Caption: "Horn 'Antenna' A simple and efficient apparatus for producing a beam of ultra-high-frequency radio waves has been developed by Dr. Wilimer L. Barrow, '29, in the Department of Electrical Engineering at the Institute. This electromagnetic horn antenna is expected to be useful in microray communication over a narrow pencil-like beam at wavelengths only a few inches long. Other applications may be in airplane and ship navigation. Dr. Barrow is shown adjusting the transmitter by which the waves are started from the square hollow tube into the throat of the horn."