Tube-number record
12/03HB
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BrandFerranti
ClassRadar Display Tube
BaseDuodecal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeMetal backed screen glass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesWhen used for series operation, surge heater voltage should not exceed 9.5 V r.m.s.
Absolute Maximum Ratings
Plate Voltage15000 V
Grid 2 Voltage500 V
H-C Voltage200 V
Audio Performance
Key Features
- 12in diameter
- Metal backed screen
- Magnetic deflection
- Low voltage electrostatic focus
- External conductive coating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radar Display | 12000 V | — | — | — | — |
Application Notes
This screen material is liable to burn if operated with a spot which is stationary or slow moving. The tube should not be operated under such conditions, even at low beam current.
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