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Lot - 1pcs. or more...
Attention:
- Dates and Prints on tubes may not match what you receive upon purchase.
- Previously used. Dismantling. Tested. Electrical measurements - NO
Russian tetrode tube GU-74BSvetlanaeq.4CX800AUSED CONDITION
Russian tetrode tube GU-74B are direct replacements for use in some of the best-built RF power amplifiers, including Alpha 99, 91B, 8100; ACOM 1000, 1006, 1010, 2000A.Fully equivalent to the modern 4CX800A tube.DescriptionThe 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. GU74B (4CX800A) Ceramic Power Tetrodes are high performance ceramic/metal tetrodes with a plate dissipation rating of 800 watts.The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service.
Stamp of technical control department of the manufacturer ” ОТК “
Technical specification:
- Cathode type: oxide, indirect heating;
- Application field: power amplification in broadcasting and SSB equipment;
- Brief application: amplification;
- Envelope: metal-ceramic;
- Cooling method: forced air;
- Forced air cooling of at least 35m3/h.;
- Dimensions: 90 x 71mm;
- Filament voltage: 12.6V;
- Filament current: 3.3 – 3.9A;
- Mutual conductance: 26 to 38mA/V;
- Output power: 0.6 kW;
- Maximum anode voltage: 2kV/4kV in peak;
- Maximum operating frequency: 150MHz.
Service life not less than 2000 hours.
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