Tube-number record
21FCP4
0 archive entries
21FCP4 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Le Cathoscope, year 1960, construction Electrostatic Focus, Magnetic Deflection, socket CRT / special base, and maximum plate voltage 16000 V. The archive does not yet hold a photographed example of this type.
BrandLe Cathoscope
ClassCathode Ray Tube
BaseCRT / special base
Filament6.3 V @ 350 mA
Construction
Primary TypeElectrostatic Focus, Magnetic Deflection
Envelope171-G1
SectionsSingle
Filament / Heater
MaterialSulfide type
Warm-up Time11s
Heater NotesUnipotential cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode drive service | 16000 V | — | — | — | — |
Application Notes
The 21 FC P4 is an electrostatic focus and magnetic deflection, direct viewing picture tube. Features include a short overall length and a non-ion trap gun.
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