GU74B/4CX800A Ceramic Power Tetrode

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

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

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

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

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

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

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

Technical Specifications

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