Tube-number record
30E8
0 archive entries
BrandMazda
ClassCathode Ray Tube
BaseCRT base (B12 family)
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
- Electrostatic deflection
- Precision compass scale
- Green (P1) phosphor
- Medium persistence
- Calibrated for octantal error
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard focus | 2200 V | — | — | — | — |
Application Notes
Specifically designed for Radio D.F. Compass use. Bearings error not exceeding +/- 2 degrees.
Datasheets
Datasheet: 30E8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results