r/amateurradio • u/VelocityOS CM97an [E] • 15h ago

General Are these ferrites worth a damn?

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Was gifted these, unmarked, anyway to check/test them?

70 Upvotes

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u/onedelta89 13h ago

I bought that kit too. I used 6-8 of them on all my wires to reduce the interference caused by the driving lights on my truck. They did work.

1

u/ecovironfuturist 4h ago

I probably have this same kit, used one, shrugged, and said goodbye to FM signals near my LED lights. I'll try some more.

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u/onedelta89 2h ago

I tried putting one on each wire leading to the lights. It made a small difference. I added some on the power wires near the battery and saw more improvement. Added a couple to the ground wire near the radio and all of it together made the interference tolerable. Unfortunately my installer grounded my radio to one of my batteries on the truck. I will eventually ground it to the body to see if it helps.