Tube-number record
F-6800
0 archive entries
F-6800 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand ITT (International Telephone and Telegraph Corporation), construction Triode, maximum plate voltage 15000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandITT (International Telephone and Telegraph Corporation)
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
Sections1
Filament / Heater
MaterialThoriated tungsten
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation20000 W
Grid 1 Voltage-1800 V
Cathode Current4000 mA
Audio Performance
Power Output55000 W
Key Features
- Water cooled anode
- Industrial oscillator
- Thoriated tungsten filament
- Operation up to 50 megacycles at reduced ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio-Frequency Power Amplifier and Oscillator - Class C Telegraphy | 12500 V | — | — | 19.5 | 3500 mA |
Application Notes
Operation at frequencies above 15 megacycles may require air flow onto the dish center in order to hold the temperature of the seals and dish below 180C. Modulation essentially negative may be used if the positive peak of the envelope does not exceed 115 per cent of the carrier conditions.
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