Clip-on Ferrite Ring Cores EMI RFI Signal Noise Filter Noise Suppressor for HDMI USB Power Cable Diameter 3mm/5mm/7mm/9mm/13mm,5Size,22Pcs

As a new ham, I been having issues with em interference and needed to reduce it. Bought these and they instantly work on all my feedlines, antenna's and radios. Including my SDS200. The extras will sure come in handy. Only minor issue is it should be marked on the ferrite bead the size of what they are instead of guessing but for me this was minor.

Fit well and easy to install. If you live where you may have EM concerns due to lightening or random pulses these answer the call. I've installed these on a variety of appliances and Battery UPS components.

The magnets on the largest size are too big to allow the clips to shut. The rest works fine.

Replaced my 2000 Honda Accord headlamps with LEDs and the buzzing would start when I would have the lights and AM radio on. These were a quick fix! And much cheaper than a new transformer!

Good

great to reduce interference from nearby electronics, especially things with electric motors. I put these on the power cables for my computer and audio visual equipment along with connection cables. I don't get any weird interference when the smoothy machine is running.

I bought the assortment pack to start addressing RFI issue in my home office. My major win was snapping a couple of the larger size ones on the AC cable for my C Crane CC Radio 3 that was getting interference on several AM station when running on AC. Two cores made a big difference. I used a smaller core on the power cable of an Emerson clock radio to clear up some RFI there as well. The rest of the assortment will be laying around in case other issues arise. Nice to have an assortment, since you never know what you might need.

The two I've tried to use wouldn't snap together well and then when I tried to force it, the inside broke. Poor quality clipping mechanism.