Clip-on Noise Filter,VSKEY [10pcs 3mm] Anti-Interference High-Frequency Ferrite Core Choke Clip for Telephones,Tvs,Speakers,Radio,Audio Equipment Noise Suppressor (3mm Inner Diameter)

Functioned, kept noise level to a minimal, small enough to fit in dash, and good price.

Amazing! I really had my doubts about this product actually working. My problem was that I have a studio space in a loft above the garage. Anything that was plugged in or turned on downstairs would put a ton of static on my radio stations, making it impossible to hear what was being said or played. It was driving me totally nuts when people would come in and turn the lights on in the garage bays. Nothing I was doing would help, no matter what the position or height of the antenna. Apparently, there was enough "bleed" from the electrical lines on the 1st level that were on the same frequency as my radio (or something like that, it was explained to me but I don't remember the details.) So, I ordered these, I split my electrical cord and put one on each side of it, then put three on the antenna wire at 1 foot increments. Results? TOTALLY CLEAN SIGNAL, ZERO STATIC! Fantastic! I am one very happy customer. Thank you so much!

A Lifespan TR1200 treadmill and a Visio Tv. As soon as I stepped on the treadmill and pressed start, the Tv froze into pixelation. I tried separate surge protectors, no help. I put 5 of these on the Treadmill power cord and 5 on the TV power cord. And it actually helped quite a bit! Still an ocassional freeze up(especially in very humid weather) but a big improvement in my setup. It’s pretty low expense, so worth a try.

These are NOT the correct material composition to actually filter out RFI due to common-mode currents induced by poor-quality LED lighting and other broad-spectrum RF-generating sources. So these are a waste of time and money. Make sure you get ferrite chokes/filters made of Type 31 material to really do the job.

Noted some improvement in reducing radio interference from the new Led fog lights after attaching to these filters but not as much as I’d hoped for.

I have a 1997 Mazda Protege DX with an aftermarket radio in it, I'm restoring it because it was my mother-in-law's car and she passed away about a year ago and I'm going to restore it and give it to one of the kids,, that being said I installed some hid LED headlights with a ballast after I did that I could pretty much only pick up a couple of radio stations because of all the static when the lights were on. I did some research on ferrite and saw this product which I have now purchased and as soon as I installed them on the lines between the LED ballast in the Headlights about 90% of the static left and I was able to receive my radio stations. I have since purchased more ferrite and installed these on my radio antenna and also on the lines coming out of my alternator, and they seem to do a pretty fair job of reducing that static noise that you get in some vehicles on the radio when your turn signals are blinking on and off and so forth if you're having a problem like this I think they're worth giving a try.

Good product

My microwave used to drive my on-demand water heater mad. Without warning the water heater would click relays and start beeping sometimes when the microwave was running. I put four of these on the microwave power cord close to where it came out of the case. Problem solved! It did take four though, still acted up a bit with only three.

Anti-Interference "chokes" don't always do much at all. These are very well made but may not make any perceivable difference.

They did absolutely nothing to cancel the noise from my beamtech bulbs. 2 broke while installing them. I would not recommend them for noise canceling pertaining to automotive led bulbs

Item came in really quick. No idea if there is an improvement. Still have a bit of static, but that be because I didn't solder connections.