958-A
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BrandRCA
ClassAmplifier Triode
BaseSmall Radial 5-Pin
FilamentV @ mA
Construction
Primary TypeTriode
EnvelopeAcorn (T-44)
SectionsSingle
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation0.6 W
Grid 1 Voltage-30 V
Cathode Current7 mA
Audio Performance
Power Output0.6 W
Key Features
- Acorn type
- UHF performance up to 350 MHz
- Coated filament
- Compact design
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 135V | 1200 | 10000 | 12 | 3mA |
| Class C Telegraphy | 135V | - | - | - | 7mA |
Application Notes
R-F grounding by means of condensers placed close to the tube pins is required for full UHF capabilities. Horizontal operation permitted if plane of electrodes is vertical.
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