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» Vacuum tubes by use » POWER / OUTPUT tubes » 30P1M / 30P1S tetrode tube
30P1M / 30P1S tetrode tube
Manufacturer: MELZ factory
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Rare output beam tetrode 30P1M (later name 30P1S) with a the heated oxide cathode is intended for an energy amplification in devices of broad application. Made in USSR, MELZ factory (from 1949 till 1950 only). NOS and never used before!

  • Filament voltage: 30V;
  • Anode voltage: 110V;
  • Voltage of the second grid: 110V;
  • Bias voltage on the first grid: -7.5V;
  • Filament current: 300 В± 25mA;
  • Anode current: 70 В± 22mРђ;
  • Second mesh current: < 12mA;
  • Steepness: 10В±2.5 mA/V
  • Technical Specifications Technical Specifications

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