In this image, a member of the Radio Division is seen operating the Sunter Airplane Radio Telephone set. This particular model, the Y-2444, is one of eight experimental models used and has a receiving wave length range of 300 to 2400 meters. This photograph was taken on February 15, 1919.

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Size: 8545px × 5778px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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