Artifact Details


Plug in vacuum tube module

Catalog Number



Physical object

Identifying Numbers

Other number U5-7 Printed in yellow paint on the extraction end.


overall: 1 3/4 in x 8 1/2 in x 7 1/4 in


This module has six miniature vacuum tubes and two neon bulbs mounted on a chassis located at the extraction end and a phenolic board holding 36 bannana plugs that serves as the insertion end. Components are mounted in the 3.5 inch space between the chassis and insertion end. Each of a pair of tubes on one outside end appear to have identical circuitry, and each of a pair of tubes on the opposite end appear to have identical (but different) circuitry. The center pair of tubes are each wired differently. A small paper tag attached to the extraction handle has dates and numbers that appear to be test results.


Component/vacuum tube