60 Pieces Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip for 3mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter/Video Cable Power Cord (Black)

Used properly these will solve your problem with interference. You get a lot for your money with this assortment and these are actually surprisingly high quality.

These ferrite cores seem to work just fine as basic HF chokes, and I feel they are a good deal at this price. I ran a test on my NanoVNA with 5 windings into the core to see which frequency range these ferrites can suppress, and they seem to do a good job between 3.5 MHz and 56 MHz. I hope this basic test on the NanoVNA helps others decide if these will help their situation.

I’m extremely satisfied with the Tamicy 60 Pieces Clip-on Ferrite Ring Core Kit. This set is a fantastic value, especially for anyone dealing with RFI/EMI issues in a ham radio, audio, or general electronics setup. The variety of sizes (3mm, 5mm, 7mm, and 9mm) makes it easy to find the right fit for different cables, from small USB cords to thicker power lines. The clip-on design is super convenient—no need to disconnect or rewire anything, just snap them on and you’re good to go. I immediately noticed a reduction in interference and noise, particularly on my radio equipment and computer peripherals. The build quality feels solid, and the clips stay securely closed without slipping. Overall, this is a must-have kit for anyone looking to clean up signal noise efficiently and affordably. Highly recommended!

Fit cables well. Difficult to judge effectiveness on my system.

They do the job eliminating and reducing rf noise in components and they snap in place easily and stay in place

I have used these on various cable sizes and they have eliminated RF problems. It's an excellent selection of sizes.

$17.99 at time of review Received package in good condition - fast shipping, Presented in a durable cardboard box Nice assortment Product quality looks very good, Nice uniform finish Sizes look correct Basted on quality and quantity - good value for the price, Recommended product, these work amazingly good for filtering out USB power supply noise that being picked up by surrounding AC power cords, I will often use the lager size ones and loop them a couple of times to get better performance,

I don't know why it was necessary for the seller to bathe these ferrite clamps in patchouli. Good lord, they REEK. Be prepared to wash your hands a dozen times after handling these because they will stink terribly. Weird and gross. That said they do seem to work pretty well. Maybe the stink helps to absorb some of the background EMF.

Poco que compartir son cables de muy buena calidad - es todo.-.-.-

Have used nearly all of these they are used to reduce the effect of radio frequency interference. Have not carried out definite testing to determine if within specifications. However they have worked in all all instances where required.

used on the AC power lines to LED lights

Satisfactory for reducing domestic stray RFI...adequate light usage. Sometimes an electical tape wrapping needed to keep a loose ferrite clip tight. Thank you.