Tube-number record
12/08 HM
0 archive entries
12/08 HM is a tube type in the TubeDatabase archive (class: Radar Display Tube). Recorded specifications: brand Ferranti, year 1962, construction Display / CRT, socket Duodecal, and maximum plate voltage 15500 V. The archive does not yet hold a photographed example of this type.
BrandFerranti
ClassRadar Display Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage15500 V
Grid 2 Voltage600 V
Cathode Current0.15 mA
H-C Voltage200 V
Audio Performance
Key Features
- Metal backed screen
- Flat faced
- High resolution
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 15000 V | — | — | — | 0.05 mA |
Application Notes
Improved version of CV.429. Magnesium fluoride screen liable to burn if spot is stationary.
0 results