Tube-number record
9C22
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BrandRCA
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass-Metal
Base MaterialMetal
Sections1
Filament / Heater
MaterialMultistrand Tungsten
Absolute Maximum Ratings
Plate Voltage17000 V
Plate Dissipation20000 W
Grid 1 Voltage-2000 V
Cathode Current40000 mA
Audio Performance
Power Output61000 W
Key Features
- Forced-air-cooled
- Multistrand Tungsten filament
- Integral Radiator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 17000 V | — | — | 41 | 5000 mA |
| Class C Telephony | 12500 V | — | — | 41 | 3500 mA |
Application Notes
The specified air flow at a pressure of 2.2 inches of water should be delivered by a blower vertically upward through the radiator before and during the application of any voltages.
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