Tube-number record
F4056
0 archive entries
F4056 is a tube type in the TubeDatabase archive (class: Traveling Wave Tube). Recorded specifications: brand CSF, year 1963, construction Other / special, socket Octal, and maximum plate voltage 2700 V. The archive does not yet hold a photographed example of this type.
BrandCSF
ClassTraveling Wave Tube
BaseOctal
Filament6.3 V @ 1.2 mA
Construction
Primary TypeOther / special
EnvelopeMetal
SectionsSingle
Filament / Heater
Heater NotesIndirect heating
Absolute Maximum Ratings
Plate Voltage2700 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 6.5 GHz | 2370 V | — | — | — | 36 mA |
| 7.5 GHz | 2360 V | — | — | — | 39 mA |
Application Notes
The helix must be connected externally to the collector through a milliammeter and a safety circuit set to 5 mA.
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