Triad type 24A screen grid tetrode
date: label: date made
content: ca 1932
name: label: maker
content: Triad Manufacturing Company, Inc.
notes: label: Description (Brief)
content: A screen grid tetrode for radio frequency amplification. Plastic base with 5 pins, domed envelope, top contact. Base marked: "Triad" and "Licensed only to extent indicated on carton". Envelope stamped: "Made in / 24A." Paper label reads: "M[anufactured U]der License of R.C.A. / Do not remove this label / [...] been carefully tested before / [....] should it fail to perform satis- / [factorily ...] may be returned for adjustment / [...na] med below within a reasonable / [...] only when date of sale and / dea[ler ...] is filled in. / Dea[ler] / Name [blank / Date of / Sale [blank] / Triad Mfg. Co., Inc. Pawtucket, R.I." Reference: https://www.radiomuseum.org/tubes/tube_24a.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 Donald J. Detwiler
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.312361
label: catalog number
content: 312361
label: accession number
content: 163276
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
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