Tube-number record
9GP7
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BrandGeneral Electric
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialMetal
SectionsSingle
Filament / Heater
Heater NotesAllowable variation ± 10%
Absolute Maximum Ratings
Plate Voltage7700 V
Grid 2 Voltage330 V
H-C Voltage125 V
Audio Performance
Key Features
- Magnetic focusing
- Magnetic deflecting
- P7 Phosphor
- Octal base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation 1 | 4000 V | — | — | — | 0.1 mA |
| Operation 2 | 7000 V | — | — | — | 0.1 mA |
Application Notes
The center of the undeflected unfocused spot will fall within a 20 mm radius circle. Cutoff voltage is necessary for visual extinction of a stationary focused spot.
Datasheets
Datasheet: 9GP7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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