GU74B/4CX800A Ceramic Power Tetrode GU74B/4CX800A Ceramic Power Tetrode
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GU74B/4CX800A Ceramic Power Tetrode

$1,440.00
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Penta Laboratories GU74B/4CX800A Ceramic Power Tetrode - Unleash High-Performance RF Amplification

Elevate your RF power amplification capabilities with the Penta Laboratories GU74B/4CX800A, a high-performance ceramic power tetrode designed for exceptional performance, reliability, and efficiency.

Key Features

Robust Power Handling:Ā With an 800-watt plate dissipation rating, this tetrode delivers substantial power output for demanding applications.

Versatile Design:Ā Excels in both grid-driven and grounded grid configurations, providing flexibility for various amplifier designs.

High Gain Performance:Ā Ideal for use as a high-gain grid-driven RF amplifier, ensuring strong signal amplification.

Direct Replacement:Ā Compatible with popular RF power amplifiers including Alpha 99, 91B, 8100, ACOM 1000, 1006, 1010, and 2000A.

Homebrew RF Radio Potential:Ā Perfect for building custom high-performance amplifiers tailored to your specific GU74B/4CX800A replacement tube needs.

Impressive Output:Ā Conservatively produces 750 watts PEP SSB and 750 watts Key-Down CW with 1200 watts input.

Enhanced Longevity:Ā Modern amplifiers with auto-tuning and vacuum tube protection circuits can further increase power output and extend tube life.

Technical Specifications

  • Filament:Ā Oxide-coated
  • Voltage:Ā 12.6 Volts
  • Current (at 12.6 volts):Ā 3.6 Amps
  • Amplification Factor (grid-to-screen):Ā 6.5
  • Frequency of Maximum Rating (CW):Ā 150 MHz
  • Base:Ā 7 Pin Special
  • Cooling:Ā Forced-air
  • Maximum Ratings:
    • DC Plate Voltage: 2500 Volts
    • DC Plate Current: 0.8 Amps
    • Plate Dissipation: 800 Watts

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