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

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15TO4A vacuum tube outline illustration

Tube-number record

15TO4A

0 archive entries

15TO4A is a tube type in the TubeDatabase archive (class: Radar Tube). Recorded specifications: construction Display / CRT, socket Duodecal, and maximum plate voltage 15500 V. The archive does not yet hold a photographed example of this type.

ClassRadar Tube
BaseDuodecal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Sections1

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage15500 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Radar15000 V————

Application Notes

The centre of the undeflected unfocused spot will fall within a circle having 15 mm radius concentric with the centre of the tube face.

Datasheets

Datasheet: 15TO4A.pdf

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

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    Grid 2 Voltage600 V
    Grid 1 Voltage-180 V
    H-C Voltage150 V

    Audio Performance

    Key Features
    • Aluminium Backed Screen
    • Long Persistence Afterglow
    • High Final Anode Voltage