Tube-number record
RL15A
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RL15A is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand TESLA, construction Pentode, socket Noval (B9A), maximum plate voltage 500 V, and maximum plate dissipation 20 W. The archive does not yet hold a photographed example of this type.
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
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristic Values | 220 V | 4000 | — | — | 50 mA |
| RF Amplifier Telegraphy | 350 V | — | — | — | 57 mA |
Application Notes
Suitable for RF power amplification and modulation using the suppressor grid.
Datasheets
Datasheet: RL15A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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