Tube-number record
BR 129
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BrandMarconi
ClassTransmitting Triode
Construction
Primary TypeTriode
EnvelopeForced-air-cooled
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage8500 V
Plate Dissipation5000 W
Audio Performance
Key Features
- Forced-air cooled
- Tungsten filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF Amplifier and Oscillator | 5000 V | 11000 | — | 21 | 1000 mA |
Application Notes
All air cooling supplies must be in operation before the application of any supply voltage and should be continued for at least one minute after the removal of all supply voltages. Filament current must not exceed 187A during switching on.
Datasheets
Datasheet: BR129.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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