Tube-number record
5671
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BrandRCA
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Base MaterialSpecial terminals
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation25000 W
Grid 1 Voltage-2000 V
Cathode Current8000 mA
Audio Performance
Power Output100000 W
Key Features
- Forced-air cooled
- Multistrand Thoriated Tungsten Filament
- Integral Radiator
- High Power
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier Class B | 15000 V | — | — | 40 | 10000 mA |
| Plate-Modulated RF Power Amplifier Class C Telephony | 12500 V | — | — | 40 | 4000 mA |
| RF Power Amplifier Class C Telegraphy | 15000 V | — | — | 40 |
Application Notes
Forced-air cooling must be delivered vertically upward through radiator. Filament seals require separate air flow of 10 cfm.
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