SCR-72 Low frequency amplifier photographed in a laboratory. The image was taken on March 5, 1918. The apparatus belongs to the SCR (Signal Corps Radio) system used during World War I. This particular model was used for amplifying low-frequency signals. The photograph is labeled with photographer number 2631.

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Size: 7982px × 6302px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 2631, 5-1916, activities, american, amplifier, ap, apparatus, description, frequency, issued, laboratory, mar, military, notes, photographer, photographs, publication, ree, scr, scr-72, war, world