Tube-number record
CATHODE-RAY TUBE
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BrandGeneral Electric
ClassPicture Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage-125 V
H-C Voltage180 V
Audio Performance
Key Features
- No ion-trap magnet required
- Aluminized screen
- Gray faceplate
- External conductive coating
- High-quality fluorescent screen
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Receiver | 16000 V | — | — | — | — |
Application Notes
The 21BDP4 is a rectangular all-glass picture tube providing a 19 1/4 by 15-inch picture for direct-view television reception.
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