M-O Valve type S625 screen grid tetrode with sockets
date: label: date made
content: 1927
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: A double-ended T-shaped tube with two plastic bases, one with 2 banana pins, the other with 3 pins. Unit mounted in sockets Stamped on envelope: “Marconi / Valve / British Radio Valve / Manufacturers Association / BVA / Made in England / S625 / Patented”. For very high frequency operation. Reference: https://www.radiomuseum.org/tubes/tube_s625.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320887
label: catalog number
content: 320887
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/8 in; 11.43 cm x 3.4925 cm