GU-18-1
Generator double beam tetrode GU-18-1 with indirectly heated oxide cathode in a glass shell.
Designed to generate oscillations in circuits with independent excitation or self-excitation at frequencies up to 600 MHz.
The GU-18-1 tetrode is used in various radio engineering devices for general and special purposes.
Indirectly heated oxide cathode.
Produced in glass design.
It is produced in a glass baseless design with 8 leads.
Pin arrangement: РШ6.
Works in any position.
Cooling air natural.
Overall dimensions of the GU-18-1 tetrode:
- lamp height - 85 mm;
- lamp diameter - 40 mm.
Weight no more than 25 g.
Operating time not less than 400 hours.
Deciphering the marking of the tetrode:
GU-18-1
GU - a letter that determines the type of lamp: GU - generator lamps with a generation frequency of 30 to 300 MHz;
18 - the number of the serial number of the development of this type of lamp;
1 - modification index.
Main technical parameters of GU-18-1:
at Un=6.3 V, Ua=250 V, Uc2=200 V, Ia=35 mA
• Glow current ...... 1.25 ±0.15 A
• Anode current ...... 45 ±25 mA
• Current of the 2nd grid ...... no more than 6 mA
• Current of the 1st grid reverse ...... no more than 10 μA
• Slope ...... not less than 18 mA/V
• Oscillatory power ...... not less than 13 W
• Interelectrode capacitances, pF:
- input ...... 7 ±1.4
- output ...... 2.6 ±0.6
- passage ...... no more than 0.6
Limiting operational characteristics of GU-18-1:
• Filament voltage ...... 5.7-7.0 V
• Anode voltage ...... 600 V
• Voltage of the 2nd grid ...... 300 V
• Voltage of the 1st grid is negative ...... 175 V
• Voltage between cathode and heater ...... 150 V
• Cathode current ...... 130 mA
• Power dissipated by the anode ...... 27 W
• Power dissipated by the 2nd grid ...... 4 W
• Power dissipated by the first grids ...... 1 W
• Operating frequency ...... 600 MHz
• Cylinder temperature ...... 265 C
• Ambient operating temperature range ...... from -60 to +70 С
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