Tube-number record
GS-9B
0 archive entries
GS-9B is a tube type in the TubeDatabase archive (class: Microwave Triode). Recorded specifications: construction Triode, base metal, socket Coaxial, maximum plate voltage 2500 V, and maximum plate dissipation 300 W. The archive does not yet hold a photographed example of this type.
ClassMicrowave Triode
BaseCoaxial
Filament11.7 V @ 1 mA
Construction
Primary TypeTriode
Envelopemetal-ceramic
Base Materialmetal
SectionsSingle
Filament / Heater
Materialoxide-coated
Warm-up Time90s
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage2500 V
Plate Dissipation300 W
Grid 1 Voltage50 V
Cathode Current330 mA
Audio Performance
Power Output40 W
Key Features
- forced air cooling
- continuous operation
- decimetric wavelength range
- external-feedback oscillator compatible
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF generation (continuous) | 1300 V | 19500 | — | 111 | 120 mA |
Application Notes
The triode is available in two variants: GS-9B with heat sink for forced air cooling, and GS-90B (FC-90B) without heat sink for other cooling systems.
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