Tube-number record
D18-120
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ClassInstrument Cathode-Ray Tube
Base14-pin all-glass
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular flat faced
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect heating by AC or DC; parallel supply
Absolute Maximum Ratings
Plate Voltage11000 V
Grid 2 Voltage2200 V
Grid 1 Voltage-200 V
H-C Voltage125 V
Audio Performance
Key Features
- 18 cm diagonal
- rectangular flat faced
- mesh and metal backed screen
- Electrostatic focusing
- Double electrostatic deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard | 10000 V | — | — | — | — |
Application Notes
The tube should not be supported by the base alone. Low impedance deflection plate drive is desirable.
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