Tube-number record
191
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ClassReceiving Tube
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage50 V
Audio Performance
Key Features
- Filamentary Cathode
- Triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 25 V | — | — | 6 | — |
Application Notes
Early low-power triode used in telephone and radio applications.
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