Marconi FE1 tetrode in holder
date: label: date made
content: ca 1924
name: label: maker
content: Marconi Wireless Telegraph Co. Ltd.
notes: label: Description (Brief)
content: Manufacture: Marconi valve. Printed: "Marconi Valve / Covered by Various Patents / 2296 F.E.1". Cylindrical tube with five contacts: one on each end, two on opposite sides near one end, one on the side at opposite end. Blue coating near the end with one side contact. Unit in holder. Connectors on holder etched: "F" and "P".
label: Description (Brief)
content: Note from donor reports: "Marconi Company Tetrode, also with cylindrical structure, probably the type that Mr. Hammond obtained from RCA, as requested by Marconi, as shown in the Marconi correspondence. Circa 1924."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the Estate of John H. Hammond, Jr., thru The National Shawmut Bank of Boston
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.327507
label: catalog number
content: 327507
label: accession number
content: 266066
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: holder only: 2 1/2 in x 2 3/4 in x 5 1/8 in; 6.35 cm x 6.985 cm x 13.0175 cm
label: Measurements
content: tube only: 3 3/4 in x 1 3/8 in x 1 in; 9.525 cm x 3.4925 cm x 2.54 cm
label: Measurements
content: overall: 2 1/2 in x 2 3/4 in x 5 1/8 in; 6.35 cm x 6.985 cm x 13.0175 cm