21YP4B
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BrandRCA
ClassPicture Tube
BaseSmall-Shell Duodecal 6-Pin
Filament6.3V @ 600mA
Construction
Primary TypeRectangular Glass
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- Aluminized screen
- Low-voltage electrostatic focus
- 70 degree magnetic deflection
- P4 Phosphor
- No Ion-Trap Magnet required
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid-Drive Service | 16000V | - | - | - | - |
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