Tree antenna used in "Floraphone" radio experimental work by the Signal Corps Field Laboratory during World War One. Photograph shows a poplar tree being used as an antenna for the radio. Officially issued for use by the military. Sergeant McKenzie of SUBJECT 47502 is seen in the photo. Photographer is 428-19.

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Size: 8565px × 5726px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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