7905
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BrandRCA
ClassBeam Power Tube
BaseSmall-Button Noval 9-Pin
Construction
Primary TypeBeam Power Tube
EnvelopeT6-1/2
Base MaterialGlass
Sections1
Filament / Heater
MaterialCoated
Warm-up Time1s
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation10 W
Grid 2 Voltage250 V
Grid 1 Voltage-125 V
Cathode Current60 mA
Audio Performance
Power Output7 W
Key Features
- Quick-Heating-Filament
- Beam Power
- Mobile-Communications Equipment
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 200V | 6700 | - | 11.5 | 36mA |
| As amplifier at 175 Mc | 300V | - | - | - | 60mA |
Application Notes
Designed for mobile-communications equipment where quick heating is required. Pins 4 and 5 (LC) should be grounded through a capacitor to minimize RF power absorption in the filament circuit.
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