Tube-number record
RD20XL
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RD20XL is a tube type in the TubeDatabase archive (class: Coaxial transmitting triode). Recorded specifications: brand Tesla, construction Triode, base Copper/Glass, socket Coaxial, maximum plate voltage 10000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandTesla
ClassCoaxial transmitting triode
BaseCoaxial
Filament9 V @ 180000 mA
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Base MaterialCopper/Glass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Heater NotesDirect heating, thoriated tungsten cathode, parallel feed
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristic Data | — | 45000 | — | 45 | — |
Application Notes
Suitable for use as an oscillator or RF power amplifier in short-wave FM broadcast transmitters, TV transmitters (Class B linear amplifier), and industrial generators.
Datasheets
Datasheet: RD20XL.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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