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

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1T4 vacuum tube outline illustration

Tube-number record

1T4

0 archive entries

1T4 is a tube type in the TubeDatabase archive (class: RF Pentode). Recorded specifications: brand Brimar, construction Pentode, socket Miniature 7-pin (B7G), and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.

BrandBrimar
ClassRF Pentode
BaseMiniature 7-pin (B7G)

Construction

Primary TypePentode
EnvelopeMiniature
SectionsSingle

Filament / Heater

MaterialOxide Coated

Absolute Maximum Ratings

Plate Voltage90 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF/IF Amplifier45 V700350000—1.7 mA
RF/IF Amplifier90 V750800000—1.8 mA
RF/IF Amplifier90 V900500000—3.5 mA

Application Notes

Suitable for R.F. or I.F. stages of receivers employing A.V.C. and for high gain amplifiers in deaf aids.

Datasheets

Datasheet: 1T4.pdf

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

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Manufacturers

Brands

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    Grid 2 Voltage67.5 V
    Cathode Current5.5 mA

    Audio Performance

    Key Features
    • Miniature Vari-mu
    • Battery RF Pentode
    • Internal screening
    • High gain audio amplifier capability