Tube-number record
1T4
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BrandBrimar
ClassRF Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeMiniature
SectionsSingle
Filament / Heater
MaterialOxide Coated
Absolute Maximum Ratings
Plate Voltage90 V
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
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF Amplifier | 45 V | 700 | 350000 | — | 1.7 mA |
| RF/IF Amplifier | 90 V | 750 | 800000 | — | 1.8 mA |
| RF/IF Amplifier | 90 V | 900 | 500000 | — | 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
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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