Seventy years ago, American war production was going strong, as demonstrated by this worker at the Ohmite Manufacturing Company plant in Chicago. This worker, shown here on the cover of the February, 1945, issue of Radio News, is testing transmitter RF chokes for their “Q” factor.

Like virtually all American industry, the company was engaged entirely in war production. The company had been founded in 1925 and, as suggested by its name, primarily engaged in the manufacture of resistors. It’s currently headquartered in the Chicago area, with its production and distribution facilities moved to Matamoros, Mexico and Brownsville, Texas, one of many maquiladoras along the U.S.-Mexico border.

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