Tube-number record
6868
0 archive entries
6868 is a tube type in the TubeDatabase archive (class: Traveling Wave Tube). Recorded specifications: brand Federal Telephone and Radio Company, construction Other / special, socket Duodecal, maximum plate voltage 1500 V, and maximum plate dissipation 150 W. The archive does not yet hold a photographed example of this type.
BrandFederal Telephone and Radio Company
ClassTraveling Wave Tube
BaseDuodecal
Filament6.3 V @ 2500 mA
Construction
Primary TypeOther / special
EnvelopeMetal
SectionsHelical type wave propagating structure
Filament / Heater
Heater NotesUnipotential oxide impregnated cathode
Absolute Maximum Ratings
Plate Voltage1500 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Power Amplifier | 1200 V | — | — | — | 70 mA |
| Linear Amplifier | 1150 V | — | — | — | 67 mA |
Application Notes
The focusing electrode is a remote cutoff grid suitable for gain control (approx 30 db range). Shell current is the difference between cathode and collector current and should be minimized. Collector should operate 100-200V positive with respect to shell.
Datasheets
Datasheet: 6868.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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