Canadian type R30 heater-type cathode triode
date: label: date made
content: 1932
notes: label: Description (Brief)
content: A 5-pin plastic base with tipless tapered envelope, getter stain. Stamped on base: "Rogers / -R30-", written "20". Paper label reads: "A/C Tube / Type 30 / Rogers / Batteryless / Radio Receiving Sets / Receiving Sets / Heater Volts 3 / Plate Volts-Max. 150 / Warning: / Positively no Adjustments / if this Label is Removed / No. 4426 / Mfg. by / Rogers Radio Tubes Limited / Toronto / July, 1932".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Weston Electrical Instrument Corp., thru John H. Miller
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313299
label: catalog number
content: 313299
label: accession number
content: 181342
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: 4 1/2 in x 1 5/8 in; 11.43 cm x 4.1275 cm