F-5668
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BrandFederal Telephone and Radio Company
ClassPower Triode
BaseCustom (Water Jacket)
Construction
Primary TypeTriode
EnvelopeGlass with water-cooled anode
Base MaterialKovar seals
SectionsSingle
Filament / Heater
MaterialPure tungsten
Absolute Maximum Ratings
Plate Voltage14000 V
Plate Dissipation20000 W
Grid 1 Voltage-3000 V
Cathode Current9.4 mA
Audio Performance
Power Output17500 W
Key Features
- Water-cooled anode
- Kovar seals
- Heavy wall anode
- Designed for RF heating service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 8000V | - | - | 50 | 1600mA |
| Class C Telegraphy | 10000V | - | - | 50 | 1800mA |
| Class C Telegraphy | 12000V | - | - | 50 | 2000mA |
Application Notes
Specifically designed for radio frequency heating service. Replaces Type F-892 with water jacket modification. Maximum ratings apply up to 5 Mc.
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