Tube-number record
7059
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BrandRCA
ClassMedium-Mu Triode—Sharp-Cutoff Pentode
BaseNoval (B9A)
Filament12 V @ 0.195 mA
Construction
Primary TypeMulti-section
EnvelopeT6-1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesDesigned for mobile communications equipment operating from 6-cell storage-battery systems. Current listed at 13.5V.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.8 W
Grid 2 Voltage300 V
H-C Voltage120 V
Audio Performance
Key Features
- Mobile communications
- 9-pin miniature
- Sharp-cutoff pentode
- Medium-mu triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit Class A1 | 150 V | 8500 | 4700 | 40 | 18 mA |
| Pentode Unit Class A1 | 250 V | 5200 | 400000 | — | 10 mA |
Application Notes
For use in mobile communications equipment operating from 6-cell storage-battery systems.
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