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

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Tube-number record

F 8080 (TMA 406)

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BrandCSF
ClassScan Converter Tube
BaseSpecial / none
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialMetal/Glass
SectionsTwo-gun (Inscription and Reading)

Filament / Heater

Heater NotesBoth guns (Inscription and Reading) use 6.3V / 0.6A. Inscription gun heater must be isolated to 10kV.

Absolute Maximum Ratings

Plate Voltage-8000 V
Grid 1 Voltage-100 V
Cathode Current0.25 mA
H-C Voltage10000 V

Audio Performance

Key Features
  • High definition
  • Fast erasure
  • Wide range adjustable remanence
  • Radar-to-television conversion
  • Transistorized equipment compatible

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Inscription Gun-8000 V————
Reading Gun-1500 V———0.002 mA

Application Notes

Used for converting radar signals to television standards, allowing bright daylight viewing and aviation trajectory visualization.

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