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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

GAS-FILLED NOISE SOURCE TUBE

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BrandCompagnie générale de télégraphie Sans Fil (CSF)
ClassMicrowave Tube
BaseMiniature 7-pin (B7G)

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage130 V
Plate Dissipation20.8 W
Cathode Current160 mA

Audio Performance

Key Features
  • Microwave noise source
  • Neon and Krypton gas mix
  • Ambient temperature independent noise level
  • Transparent when extinguished
  • Mountable in waveguide

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Noise Source Operation130 V———160 mA

Application Notes

The tube is placed in a rectangular guide in the electric field plane, inclined at 7 degrees to the axis of the guide. A series resistor is required to limit discharge current.

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