CK7702
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BrandRaytheon
ClassRecording Storage Tube
BaseSpecial High Altitude MI #5025
Filament6.3V @ 600mA
Construction
Primary TypeTetrode High Resolution
Envelope3" Maximum Bulb Diameter
SectionsDual-gun (Write and Read)
Filament / Heater
Heater NotesHeater current 0.6 amp normalized to 600 mA
Absolute Maximum Ratings
Plate Voltage4000 V
Grid 2 Voltage700 V
Grid 1 Voltage-150 V
H-C Voltage125 V
Audio Performance
Key Features
- Dual-gun cathode-ray
- Simultaneous writing and reading
- Magnetic deflection
- Adjustable automatic priming
- Wide dynamic range of gray shades
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Mode 1 (Write Gun) | 3500V | - | - | - | - |
| Mode 2 (Read Gun) | 3700V | - | - | - | - |
Application Notes
Major application is scan conversion such as radar PPI to television type presentation. Deflection drive must be applied to both guns whenever tube is conducting to avoid damage.
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