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

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Tube-number record

30C8

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BrandMAZDA
ClassCathode Ray Tube
Filament4 V @ 720 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage4000 V
Grid 2 Voltage1000 V

Audio Performance

Key Features
  • All electrostatic deflection
  • Compass scale affixed externally
  • Precision calibrated
  • Green phosphor (P1)
  • High beam current gun system

Application Notes

Specifically designed for Radio D.F. Compass systems. Precision constructed to provide bearings with an error not exceeding 1%. Standard cardinal bearings (N, S, E, W) are accurate to 0.25 degrees.

Datasheets

Datasheet: 30C8.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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