Tube-number record
GL-893
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BrandGeneral Electric
ClassTransmitting Tube
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeWater-cooled
Sectionssingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation20000 W
Grid 1 Voltage-3000 V
Cathode Current4000 mA
Audio Performance
Power Output70000 W
Key Features
- Water-cooled
- Forced-air cooled stem
- Three-electrode construction
- Multi-phase filament operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A-F Power Amplifier (Two Tubes) | 20000 V | 16000 | — | 36 | 800 mA |
| Class C R-F Power Amplifier (Key-down) | 20000 V | — | — | — | 4000 mA |
| Class B R-F Power Amplifier | 15000 V | — | — | — |
Application Notes
The unique construction of the filament permits operation from single-phase, three-phase, or six-phase alternating current, or from direct current, for all classes of service.
Datasheets
Datasheet: GL-893.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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