Tube-number record
F-5918-A
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BrandFederal
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeWater-cooled anode, Kovar-to-glass seals
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage17500 V
Plate Dissipation70000 W
Grid 1 Voltage-3000 V
Cathode Current100000 mA
Audio Performance
Power Output150000 W
Key Features
- Thoriated tungsten filament
- Water-cooled anode
- Kovar-to-glass seals
- High heat dissipation grid
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Audio Modulator (2 tubes) | 14000 V | — | 2250 | 37 | 16000 mA |
| Class C RF Telephony | 14000 V | — | — | 37 | 10000 mA |
| Class C RF Telegraphy | 17500 V | — | — | 37 |
Application Notes
Designed for use as radio-frequency amplifier, oscillator, or Class B modulator. Maximum ratings apply up to 22 megacycles.
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