RF Power Grid Tubes · Tetrodes

GU-74B — GU-74B (GKT-74) Russian Beam Tetrode

Manufacturer: Svetlana / Reflector

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Product Description

Russian ceramic beam tetrode (GKT-74B) with 600 W plate dissipation, popular for HF and VHF amplifiers and widely used in amateur radio.

Technical Specifications

Tube TypeBeam Tetrode
Plate Dissipation600 W
Max Plate Voltage2.7 kV
Max Plate Current600 mA
Screen Voltage250 V
Transconductance35 mA/V
Max Frequency500 MHz
Filament Voltage12.6 V
Filament Current2.5 A
EnvelopeCeramic-metal

Applications

  • HF linear power amplifiers
  • VHF amplifiers to 500 MHz
  • Amateur radio high-power
  • Military Russian HF communications

Key Features

  • 600 W plate dissipation
  • 500 MHz capable
  • Russian military-grade construction
  • Popular European amateur radio tube
  • Low filament power