Tube-number record
PL-8432
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BrandPenta Laboratories
ClassBeam Pentode
Base7-pin (non-miniature)
Filament6 V @ 8.2 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeCeramic
Base MaterialCeramic
SectionsSingle
Filament / Heater
Heater NotesMinimum cathode heating time: 180 seconds
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation1000 W
Grid 2 Voltage600 V
Grid 1 Voltage-200 V
Cathode Current1000 mA
Audio Performance
Power Output1500 W
Key Features
- Forced-air cooled
- 1000-watt plate dissipation
- Ceramic-envelope
- Compact construction
- Low-distortion linear r-f amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB1 Linear R-F Amplifier (Single-Sideband) | 2000 V | 23000 | — | — | 760 mA |
| Class AB1 Linear R-F Amplifier (Single-Sideband) | 2500 V | 23000 | — | — | 780 mA |
| Class AB1 Linear R-F Amplifier (Single-Sideband) | 3000 V | 23000 | — | — |
Application Notes
Especially suited for low-distortion Class-AB1 linear r-f amplifier use, where a single tube will deliver over 1500 watts of useful power output. Also provides outstanding performance in Class-AB2, Class-B and Class-C service.
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