RD200B
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BrandTESLA
ClassTransmitting triode
Base4-pin
Construction
Primary Typetriode
Envelopeglass
Base Materialmetal/ceramic
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage3500 V
Plate Dissipation200 W
Grid 1 Voltage-400 V
Cathode Current275 mA
Audio Performance
Key Features
- Direct heating
- Thoriated tungsten cathode
- Parallel feed
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF power amplifier class C telegraphy | 3000V | 4400 | 5000 | 22 | 250mA |
| AF push-pull power amplifier class B (values per tube) | 2500V | 4400 | 5000 | 22 | 240mA |
Application Notes
Intended for use as a class B or C RF power amplifier or oscillator at frequencies up to 60 Mc/s, as well as a class A AF power amplifier. Can be powered by AC or unfiltered anode voltage in industrial generators.
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