Binocular ferrite 9:1 balun rx transformer
- There are lots of good designs for matching transformers for receiving antennas, it's cheap and easy, and very high performance
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post 07 Sep 2026
Toroid & balun Links →
Transformateur adaptation pour antenne 9:1 balun
One balun for 40-80-160 meter, OE7OPJ
4:1 coax balun design CALCULATOR
50 ohm single-band baluns
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Transformateur adaptation pour antenne 9:1 balun- To best use a long-wire antenna, the 9: 1 transformer toroid T200-2 red or T200-6 yellow
One balun for 40-80-160 meter, OE7OPJ- Amidon FT 140-77 for 40/80/160m, and amidon FT140-43 for 20-6m - multi trasformer 4:1 - 9:1 - 16:1
4:1 coax balun design CALCULATOR- Here we calculate the half wave length of the matching section of the 4:1 coax balun
50 ohm single-band baluns- The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice
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