Tube-number record
21/04HB
0 archive entries
21/04HB is a tube type in the TubeDatabase archive (class: Radar Display Tube). Recorded specifications: brand FERRANTI, year 1959, construction Display / CRT, base BI2A, socket Duodecal, and maximum plate voltage 18000 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
Base MaterialBI2A
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage18000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radar Display | 16000 V | — | — | — | — |
Application Notes
Designed primarily for use as a Radar Display Tube. The tube has an external conductive coating which may be used for E.H.T. smoothing. Ion trap magnet is not required.
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