Western Electric type V-3 telephone amplifier with type 408A pentode
date: label: date made
content: 1948
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A metal casing containing an electronics assembly. An 11-pin plastic base with center post and "6F56" on bottom. A type 408A pentode is mounted on top next to a dial with graduations 0 to 30 by 10s, labeled J68647A. A 3-pin socket is marked: "P" and "Mon". Tube socket is stamped: "KS13225L3". Tube has a 7-pin glass base with tipped T-shaped envelope. Stamped: "Western / Electric / 408A / Made in U.S.A. / 613".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Bell Telephone Laboratories
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315082.22
label: catalog number
content: 315082.22
label: accession number
content: 215003
objectType: label: Object Name
content: Telephone Amplifier
label: Object Name
content: telephone amplifier
label: Object Name
content: pentode
label: Other Terms
content: Telephone Amplifier; Components; Telephone and Telegraph; Telephone and Telegraph
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 1 13/16 in x 1 13/16 in; 13.97 cm x 4.6355 cm x 4.6355 cm