Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Display Status

This object is on display in Boeing Aviation Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Boeing Aviation Hangar
Object Details
Country of Origin United States of America Type AVIONICS-Communication Manufacturer Western Electric Co., Inc.
 Physical Description 10.3cm long, 3.5cm diameter; U.S. Army Signal Corps; 1922; triode; 4 pins. 1922 Triode produced for the US Army Signal Corps in early 1922 for experimental communications across long ranges (150 miles). Dimensions 3-D: 10.2 × 3.5cm, 0.1kg (4 × 1 3/8 in., 0.1lb.)
 Materials Glass, aluminum, brass, plastic
 Inventory Number A19840868000 Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.