🔇 Pienoy 20 PCS EMI RFI Noise Filter Cable Rings/Suppressors - Ideal for 3mm, 5mm, 7mm, 9mm, and 13mm Diameter Video Cable Power Cords (Black) Review

I saw these reports of FM interference from LED car headlights in a YouTube video. Easy to snap on depending on the wire diameter/wire insulation.

I installed theses in my Chevy Cruze. The fan in the LED keeps ruining my radio. So I tried theses. You may need to add some of these. to stop the noise.

My computer speakers sometimes picked up AM stations. Super annoying. I wrapped a few of these around the wire and haven't heard from them since. I would call it a success. Also, I got a couple of these for the price. I think I'll give my car's Bluetooth receiver the same way.

I connected these to the power cords on my cheap LED headlight bulbs and the power cords to the stereo to eliminate radio interference. I slide the cheap fans onto the headlight bulbs. They snapped on easily and helped eliminate 75% of the noise. I still hear hiss when I'm at the edge of FM reception range, but I think this is a great easy setup.

I'm not sure how they can make the noise problem worse than before I put them on. I installed LED headlights, fog lights and a light bar. Every time I turned on any of the above there was interference in the radios. After installation, the noise of the generator also appeared. I tried them on a power cable in the light, on a relay, on a cable, big, small, nothing helped. Now back to halogens and no noise.

Using these on speaker wire long distances will honestly hear the difference. Old times solve the pesky problems of living in a terraced house. Everyone has something and it causes problems with everything and everyone. But nobody cares. But if you think smart. ASK .Speakers look like antennas? Right and what stops the antenna effect of the ferrite! The magnets prevent that!,,,100%For a long time.

I put them on my phone charger cable and headphone cable to use my phone as GPS and music on my bike. I had a lot of noise from the alternator and ignition system from my cellphone through my helmet speakers, which I assumed was coming from the phone's USB charging cable. I plugged 2 of these into each USB charging cable and headphone cable and it got rid of probably 75% of the noise. Wide range of sizes, they fit snug and don't move.

If you use them on speaker cables over long distances you'll honestly hear the difference. fixes times the annoying problems living in the townhouse. Everyone has something and it causes problems with everything and everyone. But nobody cares. But if you think smart. ASK .Speakers look like antennas? Right and what stops the antenna effect of the ferrite! The magnets prevent that!,,,100%For a long time.

The cheap speakers in my bedroom that I use to play white noise at night pick up my neighbor's Morse code transmissions that keep waking me up. I ordered it on the advice of a radio amateur. I had to use most of the pack and it worked much better using the big ones and wrapping the cord a few times instead of just snapping the small ones, but I no longer wake up knocking every time my neighbor is chatty at night. and I didn't have to ask him to fiddle with his antennas. Worth the money to keep…