GU-39B-1

Description

Electron tube GU-39B-1 – powerful generator tetrode in glass-to-metal version with direct-heated tungsten thoriated carbide cathode and forced air cooling. Designed for use as a power amplifier for high-frequency oscillations at frequencies up to 100MHz with an output power of at least 13kW.

The GU-39B-1 tetrode is used for operation in short-wave transmitters of stationary amplifying radio engineering devices for general and special purposes. Works in a vertical position.

Forced air cooling:

• anode – not less than 250m³/h;
• legs – not less than 60m³/h.

Stamp of technical control department of the manufacturer “ОТК“ 

Technical specifications (at Un=6.3V, Ua=3kV, Uc2=1kV, Ia=1.5A) :

• Filament current 95 ± 10A
• Cathode emission current in a pulse (at Ua=Uc2=Uc1= 1kV): not less than 30A
• Slope: 24 ± 4mA/V
• Gain factor of the 1st grid relative to the 2nd grid: 7.5 ± 1.5
• Output power (at 30MHz): at least 13kW
• Interelectrode capacitances, input no more than 80pF
• Interelectrode capacitances, exit: no more than 29pF
• Interelectrode capacitances, checkpoint: no more than 0.7pF
• Interelectrode capacitances, 2nd grid-cathode: no more than 50pF
• Heating voltage: 6 – 6.6V
• Anode voltage: 10kV
• 2nd Grid Voltage: 2kV
• Starting glow current: 150A
• Power dissipated by the anode: 6kW
• Power dissipated by the 2nd grid: 450W
• Power dissipated by 1st grid: 200W
• Operating frequency: 100MHz
• Anode temperature: 180°C
• The temperature of the anode and junctions of metal with glass: 150°C
• Ambient operating temperature range: from +5 to +70°C

Operating time not less than 2000 hours.