6448
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BrandRCA
ClassUHF Beam Power Tube
BaseCoaxial Contact Surfaces
Construction
Primary TypeBeam Power Tube
EnvelopeCeramic-Metal
Base MaterialWater-cooled blocks
SectionsSingle section with dual-strand filament
Filament / Heater
MaterialThoriated Tungsten
Warm-up Time10s
Absolute Maximum Ratings
Plate Voltage7000 V
Plate Dissipation26000 W
Grid 2 Voltage1000 V
Grid 1 Voltage-300 V
Cathode Current7000 mA
Audio Performance
Key Features
- Water-cooled electrodes
- UHF operation up to 1000 Mc
- Thoriated tungsten filament
- Internal bypass capacitors
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class B Television Service (500 Mc) | 6000V | - | - | 6 | 6900mA |
| RF Power Amplifier Class B Television Service (900 Mc) | 6500V | - | - | 6 | 6800mA |
| RF Power Amplifier Class C Telegraphy (900 Mc) | 6500V | - | - | - | 6300mA |
Application Notes
Forced-air cooling of ceramic bushings required if temperature exceeds 150°C. Water flow must start before application of voltage.
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