Tube-number record
23FP4A
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BrandRCA
ClassPicture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialGlass
Sections1
Filament / Heater
Warm-up Time11s
Heater NotesControlled Warm-Up Time
Absolute Maximum Ratings
Plate Voltage23500 V
Grid 2 Voltage550 V
Grid 1 Voltage-154 V
H-C Voltage200 V
Audio Performance
Key Features
- Aluminized Screen
- Low-Voltage Electrostatic Focus
- Magnetic Deflection
- No Ion-Trap Magnet Required
- Filterglass Faceplate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid-Drive Service | 14000 V | — | — | — | — |
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