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

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Tube-number record

BS426

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BrandEnglish Electric Valve Company Limited
ClassS-Band TR Tube
BaseWaveguide

Construction

Primary TypeDisplay / CRT
EnvelopeWaveguide
Base MaterialTin or Silver plated flange
SectionsSingle primer

Filament / Heater

Absolute Maximum Ratings

Plate Voltage1100 V
Grid 1 Voltage-1100 V

Audio Performance

Key Features
  • Broad-band
  • Single primer
  • S-Band

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Primer Operation1000 V—5500000—0.115 mA

Application Notes

The primer supply voltage must be applied at least 5 seconds before the tube is required to operate. The primer current must be limited by a series resistance of 5.5 MOhms, of which at least 0.5 MOhms must be adjacent to the primer terminal.

Datasheets

Datasheet: BS426.pdf

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

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