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

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TMA 426 vacuum tube outline illustration

Tube-number record

TMA 426

0 archive entries

TMA 426 is a tube type in the TubeDatabase archive (class: Scan Converter Storage Tube). Recorded specifications: brand THOMSON-CSF, construction Dual gun scan converter, base Metal/Glass, socket Magnoval, and maximum plate voltage 8000 V. The archive does not yet hold a photographed example of this type.

BrandTHOMSON-CSF
ClassScan Converter Storage Tube
BaseMagnoval
Filament6.3 V @ 600 mA

Construction

Primary TypeDual gun scan converter
EnvelopeGlass
Base MaterialMetal/Glass
SectionsWriting gun and reading gun

Filament / Heater

Heater NotesHeater insulated for 10 kV (writing) and 3 kV (reading) w.r.t. ground

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Writing Gun7000 V————
Reading Gun1500 V———0.00125 mA

Application Notes

Specifically designed for short range radar such as Surface Radar, Parking Radar, and Radar Bright Display Equipment. Allows display on TV monitors in high ambient lighting.

Datasheets

Datasheet: TMA426.pdf

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

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Brands

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    Plate Voltage8000 V
    Grid 1 Voltage-100 V
    H-C Voltage150 V

    Audio Performance

    Key Features
    • High writing speed
    • Short storage time
    • Double ended gun configuration
    • Simultaneous writing and reading without crosstalk
    • Induced conductivity (EBIC) writing principle