GU-43B-1 (original box)

Description

The GU-43B-1 generator tetrode tube in glass-to-metal design with indirectly heated oxide cathode and forced air cooling. Designed to generate and amplify high-frequency oscillations at frequencies up to 100 MHz with an output power of at least 1.3 kW.
Tetrode GU-43B-1 is used in linear power amplifiers, generators with independent excitation or self-excitation. Works in a vertical position, pins down.
Forced air cooling not less than 80 m3/h.

Stamp of technical control department of the manufacturer “ ОТК “ 

GU – generator lamps with a generation frequency from 30 to 300 MHz;
43 – the number of the serial number of the development of this type of lamp;
B – letter indicating the type of forced cooling: B – air; 1 – design.

Technical specifications:

• Glow current: 6.0-7.2 A
• Anode current in pulse: 2.7 A
• Reverse current of the 1st grid: 50 μA
• Reverse current of the 2nd grid: 80 μA
• Bias voltage negative: 20-30 V
• Locking voltage negative: 100 V
• Leakage current between the cathode and all electrodes: 30 μA
• Leakage current between the 2nd grid and the anode: 30 uA
• Leakage current between the 1st and 2nd grid: 30 uA
• Anode current at low temperature: 800 μA
• Slope of characteristic: 40-55 mA/V

Limiting performance:

• Heating voltage: 11.3-13.9 V
• Anode voltage (constant): 3.3 kV
• Voltage of the 2nd grid: 500 V
• The voltage of the 1st grid is negative: 200 V
• Anode current (peak value): 3.2 A
• Cathode current (DC): 1 A
• Power dissipated by the anode: 1100 W
• Power dissipated by the 2nd grid: 28 W
• Power dissipated by the 1st grid: 5 W
• Operating frequency: 100 MHz

Operating time not less than 1000 hours.