Tube-number record
849
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BrandAmperex
ClassThree Electrode Air Cooled Vacuum Tube Modulator, Audio Frequency Power Amplifier, Radio Frequency Amplifier, Oscillator
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation400 W
Grid 1 Voltage-500 V
Cathode Current350 mA
Audio Performance
Typical THD1.5%
Power Output100 W
Key Features
- Air Cooled
- Three Electrode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A A.F. Power Amplifier | 3000 V | 6000 | 3200 | 19 | 100 mA |
| Class C R.F. Power Amplifier (Telephony) | 2000 V | — | — | — | 300 mA |
| Class C R.F. Power Amplifier (Telegraphy) | 2500 V | — | — | — |
Application Notes
Used as modulator, A.F. power amplifier, R.F. amplifier, and oscillator.
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