Tube-number record
CAT 14 / CAT 14C
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BrandMarconi
ClassTriode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeWater-cooled anode
Base MaterialCopper and Glass
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation150000 W
Cathode Current30000 mA
Audio Performance
Key Features
- Water-cooled anode
- Tungsten filament
- CAT14C: Air-cooled filament leads
- CAT14: Water-cooled filament leads
- Communication or RF heating equipment
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF Power Amplifier Class C Telegraphy | 20000 V | 50000 | 900 | 45 | 18800 mA |
| HF Power Amplifier Class C Modulated | 15000 V | 50000 | 900 | 45 | 9800 mA |
| HF Power Amplifier Class B Telephony | 15000 V | 50000 | 900 | 45 |
Application Notes
Valves are suitable for use as high frequency amplifiers at frequencies up to 10 Mc/s. Filament voltage must be reduced to half during standby periods if longer than 15 minutes.
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