PLEASE, READ CAREFULLY EVERYTHING. IT IS IMPORTANT.
About item: The GU-5B is a powerful generator triode in glass-to-metal design with a directly heated tungsten thoriated carbide cathode and forced air cooling. Designed to generate and amplify high-frequency oscillations at frequencies up to 110 MHz with an output power of at least 3.5 kW. Used for operation in radio transmitting devices and in industrial high-frequency heating installations. Working position – vertical, anode down.
Forced air cooling:
– anode – not less than 400 m3/h;
– cylinder – not less than 40 m3/h.
GU – a letter that determines the type of tube: GU – generator tubes with a generation frequency of 30 to 300 MHz;
5 – the number of the serial number of the development of this type of tube;
B – letter indicating the type of forced cooling: B – air.
Technical specifications: (at Un=12 V, Ua=3 kV, Ia=0.4 A).
Filament current: 23 A.
Grid current reverse: no more than 20 μA.
Cathode emission current: (at Uа=Uс=500 V) at least 6 A.
Ionic anode current: (at Ua=500 V) no more than 40 μA.
Anode current: (at Uс=0 V) 0.55 ± 10A.
Slope: 15 ± 3 mA/V.
Gain: (at Ia=0.5 A, Ua=2 and 4 kV) 72.5 ± 12.5.
Output power: (at 25 MHz) not less than 3.5 kW.
Service life not less than 1500 h.
Weight: 2.4 kg.
PLEASE, READ CAREFULLY!
SHIPPING METHODS:
1. Europe - Economy International Shipping - no tracking number.
If you wish faster delivery and tracking number, please select STANDARD International Shipping.
2. Worldwide - Standard International Shipping - with tracking number included in the cost of shipping.
3. Any order above $ 60 US - with tracking number included in the cost of shipping.
The ESTIMATED delivery time varies from 7 to 45 working days (9 weeks) to most of the countries.
Detailed info you can find in the table below.
| Delivery time | |||||
| % of shipments that arrive in the said delivery time | |||||
| Country | working days (without holidays and weekends) | ||||
| <15 | 15-24 | 25-34 | 35-45 | >45 | |
| <3 weeks | 5 weeks | 7 weeks | 9 weeks | >9 weeks | |
| Canada, United States | 5 % | 85 % | 7 % | 3 % | 0 % |
| Africa, South America | 5 % | 20 % | 55 % | 20 % | 0 % |
| Japan, South Korea | 10 % | 85 % | 5 % | 0 % | 0 % |
| Taiwan, Thailand | 5 % | 45 % | 45 % | 5 % | 0 % |
| China, India | 5 % | 40 % | 50 % | 5 % | 0 % |
| Indonesia, New Zealand | 5 % | 40 % | 50 % | 5 % | 0 % |
| Israel | 5 % | 65 % | 30 % | 0 % | 0 % |
| Australia | 5 % | 55 % | 35 % | 5 % | 0 % |
| Russia | 5 % | 50 % | 40 % | 5 % | 0 % |
| Europe | 60 % | 35 % | 5 % | 0 % | 0 % |
| Others, not entered shall, countries | 5 % | 20 % | 55 % | 20 % | 0 % |
Thanks And Good Luck!