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

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Tube-number record

6992

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BrandVACUUM TUBE PRODUCTS CO. INC.
Class3" Tone Display Storage Tube
BaseDiheptal
Filament6.3 V @ 1.2 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
SectionsWriting Gun and Viewing (Flood) Gun

Filament / Heater

Heater Notes0.6A per gun; Writing gun and Viewing gun are separate heaters

Absolute Maximum Ratings

Plate Voltage12000 V
Grid 1 Voltage-200 V
H-C Voltage125 V

Audio Performance

Key Features
  • Display tones
  • High brightness
  • Visual display of TV and Radar
  • Operator controlled write, hold, and erase

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Writing Gun20 V—5000——
Viewing Gun185 V————

Application Notes

Zero volts storage mesh is the black storage condition. Pulse erasure may be accomplished by application of pulses of +10 to +25 volts. Persistence may be varied from 1 second to several minutes.

Datasheets

Datasheet: 6992.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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