Moorhead / Marconi type VT "Amplifier-Oscillator" tube
date: label: date made
content: ca 1920
name: label: maker
content: Moorhead Laboratories
notes: label: Description (Brief)
content: A 4-pin base with metal shell and plastic insulator. Tipped T-shaped envelope. Vertically mounted filament inside a cylindrical collector. "S" molded on base insulator. In original box. Stamped on envelope: "Licensed for amateur / and experimental use only / V.T.236620". Reference: Tyne, "Saga of the Vacuum Tube," pages173-178.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322864
label: catalog number
content: 322864
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: tube: 4 1/8 in x 1 3/4 in; 10.4775 cm x 4.445 cm
label: Measurements
content: box: 4 1/4 in x 2 1/4 in x 2 1/4 in; 10.795 cm x 5.715 cm x 5.715 cm