GL-893-R
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BrandGeneral Electric
ClassTransmitting Tube
Construction
Primary TypeTriode
EnvelopeGlass and Metal
Sections1
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
- Forced air-cooled
- Multi-phase filament (1, 3, or 6-phase)
- High power output
- Operable up to 25 MHz with derating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A-F Power Amplifier | 18000V | 16000 | 1875 | 30 | 5500mA |
| Class C R-F Power Amplifier | 20000V | 16000 | - | 30 | 3600mA |
| Class B R-F Power Amplifier | 20000V | 16000 | - | 30 | 2000mA |
Application Notes
The GL-893-R can be operated at frequencies up to 5 MHz at full ratings. For frequencies up to 25 MHz, plate voltage and input power must be reduced as per the frequency derating table.
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