LAMPS
GU-78B
GU-78B
LAMPS
Available on back-order
Description
The generator tetrode GU-78B is designed to amplify high-frequency oscillations in amplifiers of a single-sideband signal with a power of up to 2.5 kW at frequencies up to 250 MHz. Cathode-oxide indirect heating. Decoration - metal-ceramic.
Cooling - forced air not less than 280 m3/h.
Details
1. Heating voltage 27 V.
2. Glow current 3.4-4.0 A.
3. Anode voltage 1.7 kV.
4. Voltage of the 2nd grid 300 V.
5. Bias voltage of the 1st grid, negative 51 V.
6. Locking voltage (at Ua=3 kV; la=20 mA), negative, not more than 150 V.
7. Anode current 1.5A.
8. Zero anode current (at Ua=250 V; Uc1=0 V), not less than 4.2 A.
9. The current of the 2nd grid is zero (at Ua=250 V; Uc1=0 V), not more than 0.9 mA.
10. Slope 60 ± 20mA/V.
11. Output power in class AB1 mode (at Un=27 V) 2.5 kW.
12. Output power in class AB1 mode (at Un=25.7 V) 2.2 kW.
13. Interelectrode capacitances:
– input 100-150 pF,
– output 15-30 pF,
– through passage, no more than 0.25 pF.
14. Heating voltage 25.7-28.3 V.
15. Durability – not less than 1000 hours.
16. Weight – 1.8 kg.
Payment & delivery
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.
Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.
- Description
- Details
- Payment & delivery
The generator tetrode GU-78B is designed to amplify high-frequency oscillations in amplifiers of a single-sideband signal with a power of up to 2.5 kW at frequencies up to 250 MHz. Cathode-oxide indirect heating. Decoration - metal-ceramic.
Cooling - forced air not less than 280 m3/h.
1. Heating voltage 27 V.
2. Glow current 3.4-4.0 A.
3. Anode voltage 1.7 kV.
4. Voltage of the 2nd grid 300 V.
5. Bias voltage of the 1st grid, negative 51 V.
6. Locking voltage (at Ua=3 kV; la=20 mA), negative, not more than 150 V.
7. Anode current 1.5A.
8. Zero anode current (at Ua=250 V; Uc1=0 V), not less than 4.2 A.
9. The current of the 2nd grid is zero (at Ua=250 V; Uc1=0 V), not more than 0.9 mA.
10. Slope 60 ± 20mA/V.
11. Output power in class AB1 mode (at Un=27 V) 2.5 kW.
12. Output power in class AB1 mode (at Un=25.7 V) 2.2 kW.
13. Interelectrode capacitances:
– input 100-150 pF,
– output 15-30 pF,
– through passage, no more than 0.25 pF.
14. Heating voltage 25.7-28.3 V.
15. Durability – not less than 1000 hours.
16. Weight – 1.8 kg.
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.
Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.