TRIODE-PENTODE CONVERTER
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BrandRCA
ClassReceiving Tube
Base9-Pin Miniature (Noval)
Filament18.9V @ 150mA
Construction
Primary TypeMulti-unit
EnvelopeGlass
Base MaterialSmall-Button Noval
SectionsTriode, Pentode
Filament / Heater
Heater NotesDesigned for series-string operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.2 W
Grid 2 Voltage250 V
Grid 1 Voltage-40 V
H-C Voltage100 V
Audio Performance
Key Features
- 9-Pin Miniature Type
- Sharp-cutoff pentode
- Medium-mu triode
- Low interelectrode capacitances
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit (Amplifier) | 100V | 5800 | 6900 | 40 | 8.5mA |
| Pentode Unit (Amplifier) | 250V | 4600 | 750000 | - | 7.7mA |
| Pentode Unit (Triode-Connected Amplifier) | 150V | 4000 | 7900 | 42 | 7.8mA |
| Triode Unit (250-Mc Oscillator) | 150V | - | - | - | 13mA |
| Pentode Unit (Mixer) | 150V | 2100 | - |
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