Tube-number record
21FVP4
0 archive entries
21FVP4 is a tube type in the TubeDatabase archive (class: Picture Tube). Recorded specifications: brand RCA, year 1965, construction Display / CRT, socket CRT base (B7 family), and maximum plate voltage 23000 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPicture Tube
BaseCRT base (B7 family)
Filament6.3 V @ 450 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ165-1/4 A
Sections1
Filament / Heater
Heater NotesHeater warm-up time is approximately 11 seconds (inferred from typical specs for this series, though OCR text is unclear).
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode-Drive Service | 20000 V | — | — | — | — |
Application Notes
The grid-No.4 voltage required for optimum focus will have a value between -100 and +300 volts.
0 results