Tube-number record
F-6366
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BrandFederal Telephone and Radio Company
ClassPower Triode
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeGlass with air-cooled anode
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage5500 V
Plate Dissipation3000 W
Grid 1 Voltage-1500 V
Cathode Current1300 mA
Audio Performance
Power Output4000 W
Key Features
- Industrial oscillator
- Wide spacing between elements
- No internal insulators
- Air-cooled anode
- Thoriated tungsten filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy (Condition 1) | 4500 V | — | — | 25 | 1000 mA |
| Class C Telegraphy (Condition 2) | 5000 V | — | — | — | 1200 mA |
Application Notes
Specifically suitable for industrial applications due to robust spacing and lack of internal insulators. Maximum ratings apply up to 30 MHz. Operation up to 50 MHz permissible at 75% ratings.
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