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Tube Database (7,341 tube types · 1,270 archive entries)

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9QP4 vacuum tube outline illustration

Tube-number record

9QP4

0 archive entries

9QP4 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand General Electric, construction Rectangular Glass, base Small-shell Duodecal, socket Duodecal, and maximum plate voltage 6800 V. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassCathode-Ray Tube
BaseDuodecal
Filament4.7 V @ 300 mA

Construction

Primary TypeRectangular Glass
EnvelopeGlass
Base MaterialSmall-shell Duodecal
SectionsSingle

Filament / Heater

Heater NotesLow-current heater for series-string operation

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Cathode-Drive Service5500 V————

Application Notes

Especially designed for use in small, light weight, portable television receivers featuring circuit simplification and power reduction possible in series-string service.

Datasheets

Datasheet: 9QP4.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

Filters

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Manufacturers

Brands

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    Plate Voltage6800 V
    Grid 2 Voltage300 V
    Grid 1 Voltage100 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Small size
    • Light weight
    • Low-current heater
    • Series-string operation
    • Ion-trap gun
    • Spherical faceplate