Tube-number record
HF-201
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BrandAmperex
ClassTransmitting Tube
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage2500 V
Plate Dissipation150 W
Grid 1 Voltage-500 V
Cathode Current200 mA
Audio Performance
Power Output600 W
Key Features
- Radiation cooled
- Low voltage
- High current
- High ratio of transconductance to interelectrode capacitance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier - Class B | 2500 V | 4000 | 4500 | 18 | 320 mA |
| R.F. Power Amplifier - Class C Telegraphy | 2500 V | 4000 | — | 18 | 200 mA |
| Plate Modulated R.F. Power Amplifier - Class C Telephony | 2000 V | — | — | 18 |
Application Notes
Designed for R.F. Power Amplifier, Oscillator, and A.F. Power Amplifier and Modulator applications.
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