Tube-number record
5/71AM
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BrandFerranti
ClassMicro Spot Radar Tube
BaseDuodecal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage25000 V
Grid 2 Voltage2500 V
Grid 1 Voltage-160 V
H-C Voltage200 V
Audio Performance
Key Features
- Micro spot size < 0.0005 inch
- Resolution > 8000 lines
- Metal backed screen
- Optically flat face
- Short bulb design
- Electrostatic and Magnetic focusing
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard | 25000 V | — | — | — | — |
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