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Put a bunch of these ferrite beads on everything I plug into my truck and finally found electrical silence on 2m! : r/amateurradio
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power supply - What is the purpose of the ferrite bead on DC Adaptors? - Electrical Engineering Stack Exchange
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Ferrite Ring Combo Pack, FT140 - .9" ID, 15 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz | Iron Powder Cores - Palomar Engineers®
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Snap On Sleeve Choke - 1/2"/12.7mm cable -5/10/15 bead options, 1-300 MHz | Ferrite Tutorials - Palomar Engineers®
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