Tube-number record
TB 3/2000
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BrandPhilips
ClassTransmitting Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage3500 V
Plate Dissipation1100 W
Cathode Current1400 mA
Audio Performance
Key Features
- Thoriated tungsten filament
- Direct heating
- High frequency amplifier
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. class C telegraphy | 3500 V | 18000 | — | — | 1140 mA |
| H.F. class B telephony | 3500 V | 18000 | — | — | 485 mA |
| L.F. class B amplifier (two valves) | 3000 V | — | — | — | 1300 mA |
Application Notes
The tube should be supported if it is mounted with base up. Mounting position: arbitrary with plane of anode vertical.
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