Electronic industries; People; Photographs; San Bruno (Calif.)--History; Technology;
At bottom of black-and-white photographic print: "Eimac super power klystrons are tested in San Bruno, California plant. An Eimac super power klystron was used in the recent Venus radar contact supplying the high radio frequency power. Eimac...
Klystron development took place in this laboratory. The tubes are the highest objects on the table, vacuum pumps are below. After 17 months work the invention was announced to the public, 1939.
