Tamicy 60 Pcs Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip

That are very easy to install. There are different sizes. Do a very nice job on the stray RF noise. I have them almost everywhere. On every piece of coax and on the mike cable. If you say I don't need them. Ok. I say not yet but you will. When you start running 1,500 Wat amplifier you will wish you had some. They work very well and are inexpensive. I bought this one time. I have them in the shack, pickup truck, wife's car (she's a ham also). I have some left over and have given some to my fellow ham operator's Great to have on hand. I keep them in a crown Royal bag.

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 have gone through several orders of these. Wish they would come with a data sheet of what the actual mix is in the ferrite core. They do make a difference. I use them all over the place in my shack.

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!

I used these to fix an electrical interference issue with a wireless 3-way switch that I had previously installed in my kitchen to control three recessed light fixtures. This is basically a surface mount rocker switch that sends a radio signal across the room to a receiver... like a garage door opener. The system worked fine with incandescent bulbs, but when I installed LED's in the three recessed light fixtures, the switch would only work intermittently. I put one of these ferrite on each of the two wires feeding each light socket (needed to reach up into the recessed light to install, which was a bit tricky due to space constraints). So this was two beads per light. After installation, the wireless 3-way switch is working correctly again. No issues since installation. Very pleased to be able to upgrade the lighting to LED and keep the switch functionality. Worked very well, as described. I gave 4 stars for installation because the hinges on the plastic over-mold were pretty flimsy and it took some finesse to get the two halves to line up so that the clasps would latch. Keep in mind I was working overhead and blind with my hand inside a recessed light. If you snap these onto a wire in a normal setting, there is NO issue. Very pleased and would purchase again.

Almost anyone should have a bag of these noise reduction devices if they have more than one electronic device around. Clamp one around the power cord of the device causing interference and voila! No more interference. Well, sometimes it works that way. The thing about RFI (Radio Frequency Interference) is that it is sneaky and can get out of its container in lots of different ways, not just the power cord. It usually takes a bit more effort to suppress it than that. But if the RFI emitter was otherwise well designed, than the power cord fix will sometimes help. Sometimes putting the device into a metal container with a tight fitting lid (or its equivalent, also known as a Faraday cage) might be the only way to get the noise suppressed but only if the container is well grounded. The funny thing is that this container could absorb the RFI within it and re-radiate it from the outside depending on a lot of conditions. So , to sum up, these ferrites might work, and if they don't, well, they're cheap so you haven't lost much.

$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,

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

Chegou certinhos sem problemas

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