GU-46 (original box)

Description

Generator pentode GU-46 with a directly heated tungsten carbide cathode in a glass shell and natural air cooling. It is designed to work as a generator and amplifier of high-frequency oscillations at frequencies up to 60 MHz with an output power of at least 700 W.

The GU-46 pentode is used in generators with independent excitation or self-excitation, as well as for linear power amplification in radio transmitters.

Stamp of technical control department of the manufacturer “ ОТК “ 

GU – a letter that determines the type of lamp: GU – generator lamps with a generation frequency of 30 to 300 MHz; 46 – the number of the serial number of the development of this type of tube.

Working position – vertical, a socle down. Cathode tungsten thoriated carbide direct heating.

It is produced in a glass baseless design with 7 pins.

Technical specifications: (at Un=8.3 V, Ua=2.5 kV, Uc2=0.6 kV, Ia=480 mA)

• Filament current 14.75 ± 1.25 A
• Anode current not less than 500 mA
• 1st grid reverse current no more than 40 μA
• 2nd grid current no more than 60 mA
• Slope 9.5±2mA/V
• Gain factor of the 1st grid relative to the 2nd grid 5±1
• Oscillatory power:
• at Un=8.3 V not less than 700 W
• at Un=7.9 V not less than 630 W
• Interelectrode capacitances, pF:
• input 29.5 ± 3.5
• day off 8.75±0.25
• checkpoint no more than 0.15

Operating time not less than 1000 hours.