Tube-number record
902-A
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BrandRCA
ClassHigh-Vacuum Cathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialMedium Shell
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage660 V
Grid 2 Voltage660 V
Grid 1 Voltage-125 V
Audio Performance
Key Features
- High-vacuum
- Electrostatic focus
- Electrostatic deflection
- Green fluorescence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 400V Operation | 400 V | — | — | — | — |
| 600V Operation | 600 V | — | — | — | — |
Application Notes
To avoid damage, grid-No.1 voltage should be near cutoff before application of anode voltages.
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