RL15A
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BrandTESLA
ClassPower Pentode
Base9-pin (S 9/25 ČSN 35 8905)
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 | 220V | 4000 | - | - | 50mA |
| RF Amplifier Telegraphy | 350V | - | - | - | 57mA |
Application Notes
Suitable for RF power amplification and modulation using the suppressor grid.
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