![](http://www.alamy.com/thumbs/6/E60B20F6-1CD0-41AE-81F8-EADD9BB4FF2A/2RBXAJ7.jpg)
A photograph taken on May 2, 1918, shows a radio apparatus designed for airplane use. The image displays a Fan "A" Pressure Plate and was taken at the Radio Development Station in Washington, The photograph bears the reference number 111-SC-9111 and was not intended for publication.
Size: 9177px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: -disclosure, .., 1918, 29th, 2nd, 9/11, activities, aerial, airplane, american, apparatus, aviation, communications, corp., development, effort, equipment, fan, klein, medical, military, photograph, photographer, photographs, plate, pressure, publication, radio, station, support, technology, war, washington, world, wwi