NEON TUNING INDICATOR
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BrandG.E.C.
ClassIndicator Tube
Base4-pin
Construction
Primary TypeNeon-filled
EnvelopeGlass
Sections3-electrode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage180 V
Cathode Current1.4 mA
Audio Performance
Key Features
- Neon-filled
- Visual indication of correct tuning point
- Luminous glow on long electrode
- Three electrodes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Glow Commencement | 165V | - | - | - | 0.15mA |
| Normal Operation | 180V | - | - | - | 1.4mA |
Application Notes
Correct tuning is indicated when the luminous glow on the long electrode is of maximum length. Used in A.V.C. receivers.
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