Tube-number record
4FP
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BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage3300 V
Plate Dissipation6 W
Grid 2 Voltage6600 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focusing
- Electrostatic deflection
- Post acceleration
- 3 1/2-inch square screen
- High brightness
- Small spot size
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Operation | 2000 V | — | — | — | — |
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