Tube-number record
809
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BrandGeneral Electric
ClassTransmitting Triode
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation30 W
Grid 1 Voltage-200 V
Cathode Current100 mA
Audio Performance
Power Output55 W
Key Features
- High-mu triode
- Suitable for RF and AF use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier - Class C Telegraphy (CCS) | 750 V | — | — | 50 | 100 mA |
| RF Power Amplifier - Class C Telegraphy (ICAS) | 1000 V | — | — | 50 | 100 mA |
| Class B Audio Amplifier (Two Tubes) | 750 V | — | — | 50 |
Application Notes
Commonly used in transmitter power stages and modulator circuits.
Datasheets
Datasheet: 809.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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