Tube-number record
F-6399
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F-6399 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand Federal, year 1953, construction Triode, maximum plate voltage 6200 V, and maximum plate dissipation 6000 W. The archive does not yet hold a photographed example of this type.
BrandFederal
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass with Integral Water Jacket
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage6200 V
Plate Dissipation6000 W
Grid 1 Voltage-1500 V
Cathode Current1500 mA
Audio Performance
Key Features
- Integral water jacket
- No internal insulators
- Thoriated tungsten filament
- Designed for industrial oscillator use
- Wide spacing between elements
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 4500 V | — | — | 25 | 1000 mA |
| Class C Telegraphy | 5000 V | — | — | 25 | 1200 mA |
| Class C Telegraphy | 6000 V | — | — | 25 | 1400 mA |
Application Notes
Relatively wide spacing between elements and lack of internal insulators make this tube especially suitable for industrial applications. Operation up to 50 megacycles is permissible at reduced ratings.
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