Tube-number record
3AGP-
0 archive entries
3AGP- is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Allen B. Du Mont Laboratories, Inc., construction Electrostatic Focus, Magnetic Deflection, socket CRT / special base, and maximum plate voltage 9000 V. The archive does not yet hold a photographed example of this type.
BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseCRT / special base
Filament6.3 V @ 300 mA
Construction
Primary TypeElectrostatic Focus, Magnetic Deflection
EnvelopeJ1-25 bulb contact
SectionsSingle
Filament / Heater
Heater NotesLow current heater
Absolute Maximum Ratings
Plate Voltage9000 V
Grid 2 Voltage770 V
Grid 1 Voltage-180 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focus
- Magnetic deflection
- Aluminized screen
- Short overall length
- Small diameter neck
- Miniature base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radar Applications | 7000 V | — | — | — | 0.1 mA |
Application Notes
The Type 3AGP- is a 3-inch cathode-ray tube suitable for radar applications in miniaturized equipment. An aluminized screen is used for greater light output and to minimize charging effects.
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