Myers experimental "heater" type receiving tube
date: label: date made
content: 1926
name: label: associated user
content: unknown
label: maker
content: Myers Radio Tube Corp.
label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Four-pin plastic base without top cap, domed envelope. Donor card reads: "Triode made by Elman B. Myers in the old Music-Master laboratories in Betzwood, Pa., during the winter of 1926-27. Similar in most respects to [catalog number 324360] except that the cathode is not connected to the heater inside the envelope ... a "near finished" tube except that the top cap is missing."
label: Description (Brief)
content: The card from #324360 reads in part: "[Tube] Given to [me] by Fred Milliken, who worked on their construction with Myers. Myers fundamental project was to make tubes for direct operation off a 110 volt power line. ... It is a "heater" type with a 110 V heater wound on an insulator in the center of the cylindrical plate, with an oxide coated cathode around the heater. A conventional grid and plate complete the triode assembly. ... Milliken states that three of these tubes in a radio receiver gave results far in excess of any other tube type of that period." The manufacturer of this tube in not clear - E.B. Myers Co. Ltd. or Myers Radio Tube Corp., Cleveland, or Elman Myers himself. See Tyne, Saga of the Vacuum Tube," pages 332-336.
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.324359
label: catalog number
content: 324359
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: 6 in x 2 1/2 in x 2 1/4 in; 15.24 cm x 6.35 cm x 5.715 cm