GU-74B / GU74-B / GU74B / 4CX800A tetrode tube (sealed plastic packet)

The GU - 74b / 4CX800A Svetlana tetrode is used in wide - band non - tunable amplifiers and for single - sideband power amplification in stationary and mobile RF equipment. It is useful at full ratings through 250MHz. The GU - 74b is fully equivalent to the modern 4CX800A tube. Tube is NEW, NOS and never used before!

• Name: GU74B;
• Type: tetrode;
• Cathode type: oxide, indirect heating;
• Application field: power amplification in broadcasting and SSB equipment;
• Brief application: amplification;
• Envelope: metall - ceramic;
• Cooling method: forced air;
• Dimensions: 90mm x 71mm;
• Mass: 0.55 kg;
• Filament voltage: 12.6 V;
• Filament current: 3.3 - 3.9 A;
• Mutual conductance: 26 to 38 mA/V;
• Output power: 0.6 kW;
• Maximum anode voltage: 2kV/4kV in peak;
• Maximum operating frequency: 150MHz.