CAT 30
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BrandMarconi
ClassRF Power Amplifier Triode
BaseWater Jacket Support
Construction
Primary TypeTriode
EnvelopeWater-cooled Anode
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation75000 W
Grid 1 Voltage-2000 V
Cathode Current30000 mA
Audio Performance
Key Features
- Water-cooled anode
- Thoriated tungsten filament
- Suitable for Communications and RF Heating
- Class C Operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier and Oscillator Class C Telegraphy | 20000V | 24000 | 1450 | 35 | 13750mA |
| RF Power Amplifier Class C Anode Modulated | 16000V | 24000 | 1450 | 35 | 8500mA |
Application Notes
The cooling system must be started before the application of any supply voltages and must continue for 15 minutes after removal. Filament current must not exceed 250A peak. Above 5 Mc/s, plate voltage must be derated according to frequency.
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