Snap-on Ferrite Beads 11mm (set of 3)


Three pack of Type-31 Mix snap on ferrite beads, 11mm diameter. Useful for reducing or eliminating RFI interference and RF energy from traveling down the outside of the feed line.


SKU: SNAPFERRITE-11MM Category: Tags: , , , , ,


DC-Ground antennas like J-Poles and Slim Jims work best when you can create a choke balun of 5 loops of coax near the feed point of the the antenna. But stiffer cable like RG-8U, RG-213, or LMR-400 can be difficult to loop. These snap on ferrite beads solve the problem. Placing three of these snap ferrites near the feed point of your antenna will accomplish the same task as a coiled choke balun, that is stopping any stray RF energy from traveling back down the outside of the coax cable braid.


  • Snap on type ferrite choke
  • Type 31 mix ferrite material
  • 11mm inner diamater (.413 inch)
  • Fits RG-8U, RG-213, LMR-400 (or similar) cable
  • Sold as a set of three


Additional information

Weight .125 lbs

You may also like…

Receive My Weekly Message

Subscribe to the KB9VBR antennas newsletters, the best amateur radio value in town. Receive notifications when new videos are posted, Find out what Michael is working on, sales & promotions, and get news about the amateur radio community. All coming to you about once a week. 

You have Successfully Subscribed!