Tube-number record
GL-833-A
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BrandGeneral Electric
ClassTransmitting Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialNone
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation450 W
Grid 1 Voltage-500 V
Cathode Current600 mA
Audio Performance
Power Output2700 W
Key Features
- High-mu transmitting tube
- High perveance
- Post terminals
- Sturdy structure
- Short internal leads
- High efficiency at high frequencies
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Audio-Frequency (Two Tubes) - CCS | 3000 V | — | — | 35 | 750 mA |
| Class B Audio-Frequency (Two Tubes) - ICAS Forced Air | 4000 V | — | — | 35 | 900 mA |
| Class C Radio-Frequency Power Amplifier (Key-down) - CCS | 3000 V | — | — |
Application Notes
The tube can be operated in Class C telegraph service with maximum input of 2000 watts at frequencies as high as 30 megacycles, and with reduced input up to 75 megacycles. Forced-air cooling (40 cfm) is required for high-input ICAS conditions to keep bulb temperature below 145 C.
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