air-cooled transmitting triode
date: label: date made
content: 1937
notes: label: Description (Brief)
content: Air-cooled transmitting tube with monopin base on bottom, bipin base on top, both with ceramic insulators. (Nickel-plated brass pins?) Two pins are set on a collar just below the top base, asbestos(?) padding between collar and glass. BT-shaped envelope, stamped: "8511" (serial number). Decal on front: "United / Air Lines / *Coast-To-Coast* / Mainliner." Paper label bear bottom: "Date / In / 3-16-37 / Out / [faded] / Hours / [faded] / By / [faded] / Reason for Removal / Low Emission / will not draw over / [faded] with / [faded] operation in / [faded] transmitter". Inked on press: "B / 561".
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.323017
label: catalog number
content: 323017
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: overall: 21 1/4 in x 6 1/2 in; 53.975 cm x 16.51 cm