Tube-number record
GROUNDED GRID TRIODE
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ClassUHF Triode
BasePlanar / disc seal
Filament6.3 V @ 0.4 mA
Construction
Primary TypeTriode
EnvelopeGlass with metal disc
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage350 V
Plate Dissipation3 W
Audio Performance
Key Features
- Designed for UHF operation at 600 Mc/s
- Low feedback capacity
- Concentric thimble for heater and cathode
- Indirectly heated oxide-coated cathode
- Cathode strapped internally to one heater lead
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grounded Grid UHF Amplifier | 250 V | 15000 | — | 100 | — |
Application Notes
The valve is designed to mount by means of the grid disc between coaxial lines. Used in a pre-amplifier, it improves signal to noise ratio performance of UHF receivers. Grid is typically auto-biased through 150 ohms.
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