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Your cart is empty.RF CHOKES These ferrite cores work to erase noise that is generated by a portable device or equipment that would otherwise be propagated around them. They also work as a filter to get rid of those noises generated by other devices so that your notebook PC does not get those noises that would otherwise cause malfunction for example. Ferrite cores erase and filter noises, outgoing and incoming noises at the same time. There are more than a dozen different ferrite cores offered, varied by materials, and identified by two digits numbers. The Material 31 or, sometimes called Mix 31 is the latest development for noise suppression that covers the broadest frequency range of 1 – 1000 MHz to respond to the ever-growing electromagnetic noise pollution of today. The ferrite cores come in two split halves, and clamp on to the cable whether it has a connector, or is hard wired to equipment. U.S. engineered with the latest material technology. 1pc/order unless noted as a multi-quantities pack, bulk pack. TROUBLE SHOOT TIPS Install the ferrite core at the equipment side of the cable. If a cable has equipment that needs to be protected on both sides, install at each end. Make a loop of cable over the ferrite core. Make as many loops as you can and/or install multiple ferrite cores until you successfully suppress offending noises. One loop of cable over the core has 4 times the increased erasing/filtering power, or you could use 4 cores for the same effectiveness. When there is a known offending noise present, making multiple loops of cable over the core is necessary. You can install the ferrite cores at affected devices, as well as at offending devices. Depending upon the circumstances, identifying and troubleshooting both the affected and offending devices are necessary. Atmospheric noises and static cannot be filtered by the ferrite cores. Only common-mode current caused noises can be filtered.
Miguel O.
Reviewed in the United States on March 27, 2024
Great chokes for ham radio helps with rfi issues.
Trey R
Reviewed in the United States on March 14, 2024
Well made and accurate
Jim
Reviewed in the United States on February 20, 2024
But until we get hit with an emp how good is it?
Allen Risler
Reviewed in the United States on April 17, 2024
I expected this product advertised as 3/16 to easily snap over 1/4" RG8X coax cable. This does not.
Mark A. Weiss
Reviewed in the United States on May 6, 2022
I bought these in an attempt to tame a severe RFI problem caused by a solar inverter. When it's running, the HAM HF bands are 10 over S9 noise from the inverter.I added these ferrites to both the wires going to the solar panels and the AC output lines from the inverter. There is zero improvement. Noise is still 10dB over S9.
john brooks
Reviewed in the United States on February 25, 2022
these mix 31 RF chokes stop noise & lower my S-units & hash noise in my HF radio just amazing how good they work. put on the coax at radio input and it stops RF from coming down the coax shielding((use at least 5 for coax to get the recommended 2000 ohms suppression)) and you can put them at Antenna end to, I like taking them out of it plastic shell and using shrink wrap and a heat gun for a nice look and that way you can get them close together for coax.. Wrap wall wart wire several times to increase suppression put it on computer power cord & its speakers wall wart to stop Switching power supply hash noise and cell phone chargers or any little wall wart switching power supply to stop hash noise in you power lines. make sure you follow direction to get the most out of them. There is different sizes RF Mix 31 chokes They Work.
Nellie Zhindon-Corin
Reviewed in the United States on October 8, 2022
These ferrites are mis advertised .As an rf engineer they were tried on 20m and other hf bands very ineffective in choking rf at these frequencies
JOE
Reviewed in the United States on April 14, 2022
RF Choke 31200 Ferrite Filter Core Material 31 Mix ID 3/16" 5mm worked really good for my Ham Radio station.
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