Atlantic Pacific electron relay
date: label: date made
content: ca 1922
name: label: maker
content: Atlantic Pacific Radio Supplies Company
notes: label: Description (Brief)
content: An electron relay having a brass base with 4 pins, and a tipped T-shaped envelope. Stamped: "112509" and "ER-512503". Donor's card reads: "Triode made by the Atlantic Pacific Radio Supplies Company, 638 Mission Street, San Francisco, about 1922 or 1923. Quite similar to the original "Electron Relay [catalog number 324330], but with elements about half the length of the originals. Probably reduced in size to permit the tube to be used on the higher frequencies then coming into use by the amateurs. Filament: 5 volts, 1 ampere."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324331
label: catalog number
content: 324331
label: accession number
content: 252994
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 in x 1 3/4 in; 10.16 cm x 4.445 cm