61 balun for windom, folded dipoles antenna 3KW 160-10m

High-efficiency 6:1 transformer for windom / folded dipoles / T2FD antenna. 3KW from 160m up to 10m. ==> Get the best 6:1 solution with this bulletproof tested product! Efficiency measured > 98% from 160 up to 10m. High-end 1,8mm enameled copper wire, double-coated, 210°c and > 10Kv insulation (spec IEC 60317-13).

Additional isolation using fiber glass taping around the toroid stack. 11,5x9cm waterproof ABS box. Input = SO239 and output on ceramic insulators. Pre-drilled enclosure for easy mounting.

2x Vent valves included (1500mL/min each), to avoid condensation and to reduce core heating. Is specified over a purely resistive 300-Ohms load (SWR = 1:1). In presence of SWR, please mitigate the max input power accordingly (see chart here attached).

Depends on toroid mix, toroids stack, wire gauge, insulation and ventilation. Never trust someone saying that 1 single FT240-43 can support 3KW or that 2x FT240-43 can support 5KW. In real life, this is VERY likely to fry. Always compare the type and number of toroids used in a transformer, as well as additional insulation and ventilation. No SWR and/or no efficiency given by the vendor? Check out our results, no surprise! Made in France, by a ham, for hams!

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