Eveready-Raytheon type ER235 screen grid tetrode
name: label: maker
content: Eveready Raytheon
notes: label: Description (Brief)
content: Eveready-Raytheon type ER-235 screen grid tetrode. A 5-pin plastic base with top contact, mesh grid, S-shaped envelope. Four-lobed stem press. Stamped on base: "Eveready / Raytheon / -ER 235-"; paper label reads: "Eveready / Raytheon / Dealer's Name [faded] / Date Installed [blank] / Date Removed [faded] / National Carbon Company, Inc." Reference: https://www.radiomuseum.org/tubes/tube_er235.html.
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.321232
label: catalog number
content: 321232
label: accession number
content: 241556
objectType: label: Object Name
content: tetrode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 in x 1 3/4 in; 12.7 cm x 4.445 cm