Tube-number record
TRANSMITTING TETRODE
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BrandTHOMSON-CSF
ClassTransmitting Tube
BaseSpecial / none
Construction
Primary TypeTetrode
EnvelopeGlass/Metal
Base MaterialMetal
Sections1
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage5000 V
Plate Dissipation3000 W
Grid 2 Voltage600 V
Grid 1 Voltage-300 V
Cathode Current7500 mA
Audio Performance
Power Output3500 W
Key Features
- Forced air cooled
- Coaxial screen grid
- Thoriated tungsten filament
- 3 kW Anode dissipation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Frequency Modulation RF Power Amplifier at 110 MHz | 4500 V | 20000 | — | 5.5 | 1100 mA |
Application Notes
Especially intended for frequency modulation operation. Nominal heater voltage value of 5.6V is an optimum for longevity.
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