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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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12/03HB vacuum tube outline illustration

Tube-number record

12/03HB

0 archive entries

12/03HB is a tube type in the TubeDatabase archive (class: Radar Display Tube). Recorded specifications: brand Ferranti, year 1957, construction Display / CRT, base Plastic, socket Duodecal, and maximum plate voltage 15000 V. The archive does not yet hold a photographed example of this type.

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

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Radar Display12000 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.

Filters

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Manufacturers

Brands

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    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