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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

RD20VL

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BrandTesla
ClassTransmitting Triode
BaseCoaxial

Construction

Primary TypeTriode
EnvelopeGlass-Metal
Base MaterialKovar
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage12000 V
Plate Dissipation20000 W

Audio Performance

Key Features
  • Coaxial electrodes
  • Self-supporting squirrel-cage cathode
  • Ebullition cooling
  • OFHC copper anode
  • Kovar contact rings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF Power Amplifier—45000—45—

Application Notes

Intended for use as oscillator or RF power amplifier for SW FM broadcast transmitters and for telecommunication equipment operating at frequencies up to 100 MHz.

Datasheets

Datasheet: RD20VL.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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