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Your cart is empty.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)
JP
Reviewed in the United States on February 5, 2025
I am a new ham and bought this set just to have, not entirely understanding when and how they're used.Since then, I've set up antennas inside my computer room on the ceiling (yes, i know, bad idea, but it's temporary). Anyway, transmitting on 6m/10m/12m FT8 would cause all kinds of USB devices to disconnect/reconnect, and monitors to turn off/on.Adding these ferrites, especially the largest size with the wire doubled over about 3 times per ferrite, solved all of the issues. Attach them close to the connection to the PC, or where power cords connect to monitors/PCs.I'm very glad I've gotten them and will probably need to buy another pack soon.
Jonathan Dickinson
Reviewed in the United States on February 15, 2025
I was getting tons of loud GPU ground loop/common mode noise via USB to my external DAC. Nothing worked, even the ground loop isolation devices.After applying one medium choke to each of the PCI-E connectors, one large choke across both, and one large choke across the aux CPU power wires (all close to the noise source, so GPU and mobo respectively) I am hearing absolutely no noise - even with Furmark. These also double as cable management clips.Put simply: the medium chokes are large enough to clip over single PCI-E power wire bundles, and the largest chokes are large enough for two PCI-E power wire bundles.Super easy to install: open and click closed.
Stuart Walker
Reviewed in Australia on January 30, 2025
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.
CJ
Reviewed in the United States on January 12, 2025
I had installed a set of LED fog lights on my Jeep, and was getting excessive radio interference when they were illuminated. I installed a few of these ferrite beads and the interference is gone. They worked perfectly.
Dale Wisely
Reviewed in the United States on August 10, 2024
I bought a pair of Bluetooth speakers which are very good but I was noting some low-level interference. Bought these--likely more than I'll ever need--and clamped two of them on the cable on the speakers' power supply. One close to the connector on the speaker end and the other closer to the wall wart. The noise went away. The size variation of these is good... I actually used the smaller ones. They seemed well-manufactured. Good deal.
metrology dufus
Reviewed in the United States on July 7, 2024
Maybe not kill all the 'QRM' hash noise in your house, but certainly squash it down a bit.So much radiation, so few ferrite beads -at low price, to go around...We all are literally swimming in a soup of broadband electrical emissions.I've bought TWO of these kits already, and thinking about another 1 or 2.Go around and count how many USB cables, wall warts, phone chargers, wireless speaker power packs, tv's, modems, laptops, AM/FM receivers, etc you have in your house -anything that is electronic, to get an idea of how many beads you might need.These do work, but you will need a SCAD of these to squash the dozens of sources of RFI in proximity to your ham rig or AM/FM radio.The problem is, the great providers of this precious material are greedy and miserly about giving the larger sizes. Fifteen bucks for a single fat 1" ID ferrite toroid sucks!Another of my big gripes is these [far Eastern] guys do not tell you what the material type is (43, 61 or ???) and no specification of attenuation versus frequency performance.You literally do not know what you are buying OTHER than a bag full of various sizes.Given the above, what we all really need is larger sizes, and MORE of them. More than just 5 or 6 half-inchers in a 'kit'.Why the larger sizes?Because, to squash the lower frequencies (Each time a conductor passes thru the bead (a single 'turn'), the attenuation is SQUARED after the first winding. The problem with this is the wire size is too big to wind more than once or twice through a 1/2" ID bead and still get it to snap shut (and it MUST be snapped shut to complete the electromagnetic attenuation effect).Each kit I used, I first used up all the largest beads -and needed more, then I started using up the successively smaller beads, but the smallest ones are almost too small to get even ONE pass of the wire thru.-a little like moving a BIG pile of rocks...you are not done until every one of the radiating conductors has at least one bead.Sorry, I vented my spleen.73
RK
Reviewed in the United States on July 28, 2024
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'sGreat to have on hand.I keep them in a crown Royal bag.
Cate Maley
Reviewed in the United States on November 20, 2024
Needed to limit noise on cables near my amateur radio rig. For the price I was surprised by how effective they are. I snapped maybe three on the USB cable going from my laptop to my Icom 7300 and did not notice any electrical noise. Completely eliminated the interference. Good price and effective.
Dan Brown
Reviewed in Canada on March 26, 2023
used on the AC power lines to LED lights
online customer
Reviewed in Canada on November 24, 2022
Satisfactory for reducing domestic stray RFI...adequate light usage. Sometimes an electical tape wrapping needed to keep a loose ferrite clip tight. Thank you.
Jim
Reviewed in the United States on October 26, 2022
So, like most folks with jeeps, I've added LED light bars and gotten static issues on my radio. After doing some research, it seemed these ferrite rings were the answer. I ordered the variety pack knowing I had different size wires to work with. First issue I noticed is the latches are very fragile. I broke several trying to get them locked. After putting some on, I still had static issues. Since I bought a pack of sixty, I added more, and more, and more. Used all of them and while the static isn't as bad as it was, but it is still to strong to hear anything but the closest radio stations. I've pretty well given up and just streaming my music since these didn't work
jose luis hernandez
Reviewed in Mexico on October 1, 2022
Poco que compartir son cables de muy buena calidad - es todo.-.-.-
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