RD20XK
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BrandTesla
ClassTransmitting triode
BaseFour-prong top, coaxial anode radiator
Construction
Primary Typetriode
Envelopehard glass
Base MaterialOFHC copper radiator
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation20000 W
Cathode Current5000 mA
Audio Performance
Power Output20300 W
Key Features
- Air-cooled
- OFHC copper anode with fins
- Thoriated tungsten cathode
- Hard glass envelope
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF power amplifier, class C, anode modulation (A3) | 10000V | 20000 | - | 29 | 2600mA |
| RF power amplifier or oscillator, class C, telegraphy (A1) @ 25MHz | 10000V | 20000 | - | 29 | 4600mA |
| RF power amplifier or oscillator, class C, telegraphy (A1) @ 20MHz | 12000V | 20000 | - | 29 | 4600mA |
| RF power amplifier or oscillator, class C, telegraphy (A1) @ 5MHz | 15000V | 20000 | - | 29 | 4340mA |
Application Notes
The TESLA RD20XK is an air-cooled transmitting triode with 20 kW dissipation. Suitable for use as an oscillator, AF or RF power amplifier at frequencies up to 30 MHz.
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