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

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Tube-number record

12/08 HM

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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical15000 V———0.05 mA

Application Notes

Improved version of CV.429. Magnesium fluoride screen liable to burn if spot is stationary.

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