This is just one bead of a Bead Balun. For HF frequencies at least eight and probably 16 beads are needed to fully choke the unwanted outside shield currents.
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Bead Balun with One Bead
This is just one bead of a Bead Balun. For HF frequencies at least eight and probably 16 beads are needed to fully choke the unwanted outside shield currents.
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