Tube-number record
6CG8-A
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6CG8-A is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand General Electric, construction Multi-section, base Glass, socket Noval (B9A), maximum plate voltage 275 V, and maximum plate dissipation 2.3 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypeMulti-section
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesSeries or Parallel Operation
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation2.3 W
Grid 2 Voltage275 V
H-C Voltage200 V
Audio Performance
Key Features
- Medium-mu triode
- Sharp-cutoff pentode
- Miniature tube
- Combined oscillator and mixer
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 125 V | 5500 | 300000 | — | 9 mA |
| Triode Section | 125 V | 6500 | 6000 | 40 | 12 mA |
Application Notes
Designed primarily for use as a combined triode oscillator and pentode mixer in VHF television receivers.
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