Tube-number record
2G22
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2G22 is a tube type in the TubeDatabase archive (class: Triode-Heptode Sub-Miniature Frequency Converter). Recorded specifications: brand Raytheon, year 1945, construction Multi-section, socket Subminiature, and maximum plate voltage 45 V. The archive does not yet hold a photographed example of this type.
BrandRaytheon
ClassTriode-Heptode Sub-Miniature Frequency Converter
BaseSubminiature
Construction
Primary TypeMulti-section
EnvelopeT2x3 Glass Bulb
Sections2
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage45 V
Grid 2 Voltage45 V
Cathode Current2 mA
Audio Performance
Key Features
- Small size
- Light weight
- Low battery drain
- Plug-in sub-miniature
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Frequency Converter | 22.5 V | 60 | 500000 | — | 0.2 mA |
Application Notes
Designed for combined mixer and oscillator in radio receivers and portable equipment.
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