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

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Tube-number record

RL15A

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BrandTESLA
ClassPower Pentode
BaseNoval (B9A)

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

MaterialOxide-coated

Absolute Maximum Ratings

Plate Voltage500 V
Plate Dissipation20 W
Grid 2 Voltage350 V
Grid 1 Voltage-200 V
Cathode Current80 mA

Audio Performance

Key Features
  • Directly heated filament
  • Center-tapped filament
  • RF power amplifier up to 60 Mc/s
  • Internal suppressor grid connection for modulation

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Characteristic Values220 V4000——50 mA
RF Amplifier Telegraphy350 V———57 mA

Application Notes

Suitable for RF power amplification and modulation using the suppressor grid.

Datasheets

Datasheet: RL15A.pdf

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

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