F-9C30
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BrandFederal Telephone and Radio Corporation
ClassFederal Power Triode
Construction
Primary TypeTriode
EnvelopeWater-cooled
Sections1
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation40000 W
Grid 1 Voltage-3000 V
Cathode Current45000 mA
Audio Performance
Power Output39000 W
Key Features
- Water-cooled anode
- Thoriated tungsten multi-strand filament
- Multi-phase filament excitation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Audio-Frequency Power Amplifier and Modulator - Class B | 10000V | - | - | 40.5 | 6000mA |
| Radio-Frequency Power Amplifier - Class B | 15000V | - | - | 40.5 | 2700mA |
| Plate-Modulated Radio-Frequency Power Amplifier - Class C Telephony | 12000V | - | - | 40.5 | 3100mA |
| Radio-Frequency Power Amplifier and Oscillator - Class C Telegraphy | 15000V | - | - | 40.5 | 4700mA |
Application Notes
Maximum ratings apply up to 20 megacycles. Filament may be operated on DC, single-phase, three-phase, or six-phase AC.
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