Tube-number record
HF-60
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BrandAmperex
ClassTransmitting Tube
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMetal/Ceramic Bayonet
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage1600 V
Plate Dissipation75 W
Grid 1 Voltage-300 V
Cathode Current160 mA
Audio Performance
Key Features
- Radiation Cooled
- Thoriated Tungsten Filament
- AF Power Amplifier and Modulator
- RF Power Amplifier and Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 1600 V | 5000 | — | 28 | 158 mA |
| Class C Telegraphy | 1300 V | 5000 | — | 28 | 153 mA |
| Class C Telegraphy | 1000 V | 5000 | — | 28 | 155 mA |
Application Notes
Grid voltages are given with respect to the mid-point of the filament operated on A.C. If D.C. is used, decrease grid voltage by 5 volts.
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