Tube-number record
5786
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BrandRCA
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass and Metal (Integral Radiator)
Sections1
Filament / Heater
MaterialThoriated-Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation600 W
Grid 1 Voltage-500 V
Cathode Current6000 mA
Audio Performance
Power Output1640 W
Key Features
- Forced-air cooled
- Thoriated-tungsten filament
- Integral radiator
- Vertical mounting
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier & Modulator-Class B (2 tubes) | 3000 V | — | — | 30 | 800 mA |
| RF Power Amplifier Class C Telephony | 2500 V | — | 3600 | — | 400 mA |
| RF Power Amplifier & Oscillator-Class C Telegraphy | 3000 V | — | 2200 | — |
Application Notes
Sufficient air must be delivered by a blower to the radiator and seals so that maximum temperatures are not exceeded. Air flow must start before application of any voltages.
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