Tube-number record
RS 1081
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BrandSIEMENS
ClassTransmitting Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeMetal/Glass
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation45000 W
Grid 1 Voltage-1000 V
Cathode Current8000 mA
Audio Performance
Key Features
- Thoriated tungsten filament
- Disk-shaped grid lead-through
- Industrial HF generator oscillator
- AF amplifier and modulator suitability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF Amplifier B-Mode | 12000 V | 35000 | — | 45 | 5450 mA |
| HF Amplifier C-Mode | 12000 V | 35000 | — | 45 | 4600 mA |
| Oscillator (Industrial) | 12000 V | 35000 | — | 45 | 4200 mA |
Application Notes
The tube can be operated up to 10 MHz with 15 kV and up to 30 MHz with 12 kV. Cooling requirements: 16 m3/min air for variant L, water cooling for variant W, or vaporization cooling for variant V.
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