4:1 balun for 160 to 10 meters
- Stack two t-80-2 powdered iron toroid cores together. use super glue
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post 06 Sep 2026
Toroid & balun Links →
A simple broadband 4:1 Balun Transformer
Long Wire Balun
The Dual-Ferrite-Bead 4:1 HF Balun
Binocular ferrite 9:1 balun RX Transformer
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A simple broadband 4:1 Balun Transformer- 10 bifilar turns are mount on an Amidon FT-240-61 ferrite core
Long Wire Balun- I needed about 60 cm wire 1 mm to be able to have 11 turns around the iron powder core
The Dual-Ferrite-Bead 4:1 HF Balun- Ruthroff voltage balun design using a T200-2 Toroid core was selected
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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