GMI-29B-1 modulator pulse tetrode is designed for operation in pulse modulators.

1. Glow current – 69.5 ± 3.5 A.

2. Heating voltage – 12.6 V.

3. The anode current in the lamp pulse is not more than 8 A.

4. Voltage:

– the second grid in the pulse – 2 kV;

– the first grid in the pulse – (-1.1) kV.

5. Current at filament voltage 230 V:

– the second grid in the pulse – no more than 8 A;

– the first grid in the pulse – no more than 15 A.

6. The turn-off voltage of the first grid is negative at an anode voltage of 33 kV and anode current per pulse of 1 mA – no more than 950 V.

7. Interelectrode capacitances of the tetrode:

– input – no more than 290 pF;

– output – no more than 55 pF;

– through passage – no more than 2.5 pF.

8. Ready time – no more than 5 minutes.

9. Durability – not less than 500 hours.

10. Design – glass-to-metal with an external anode lead.

11. Cooling – forced air.

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.