High-efficiency 49:1 transformer for EndFed Half Wave (EFHW) antenna
300W SSB / 100W FT8
From 1600 up to 10m !
Classical 49:1 baluns/transformers are based on FT240-43, with wide spaced windings, and a crossover.
But do you know that such design has a poor efficiency, down to 66% and up to 80% max only?
==> Get the best "High power" 49:1 solution with this unbeatable product !
Don't you want your RF power to be effectively radiated, without excessive heating, limiting your output power?
- Efficiency measured > 89% from 80 up to 10m
- Closewound windings + autotransformer (14/2 turns ratio)
- Genuine stack of 2643251002 from Fair-rite + 2 // 47pF capacitor from TDK (6Kv) ==> unique design on the market !
- High-end 1,3mm enameled copper wire, double-coated, 210°c and > 10Kv insulation (spec IEC 60317-13)
- 10x6cm waterproof ABS box, ideal also for portable operation
- SWR < 1,5:1 on a 2450 Ohms load on ALL bands !
- Input = SO239 and output + counterpoise connection = stainless steel A4-grade (316 inox)
- Eyebolt for free suspension
- Vent valve included, to avoid condensation
All devices are checked before shipping and I ship worldwide !
Made in France, by a ham, for hams !
Any questions? Message me or check my other items
73 de Ronan F8AFC