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BrandRCA
ClassTransmitting Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeS21
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1250 V
Plate Dissipation35 W
Grid 1 Voltage-400 V
Cathode Current115 mA
Audio Performance
Key Features
- Thoriated Tungsten Filament
- Two Small Caps
- R-F Power Amplifier
- Class B Modulator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 1250V | - | - | 15 | 70mA |
| Class B A-F (2 Tubes) | 1250V | - | - | 15 | 130mA |
| Class C Telephony (Plate-Modulated) | 1000V | - | - | - | 70mA |
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