Eliminate interference in coaxial cable

I am looking for balun for reducing interference on the coaxial cable

Hello vinod.kumar,

Welcome to the DigiKey Techforum.
If you are looking for a snap-on type Ferrite core, we would need the diameter of the coax cable, and some idea on the impedance or frequency.
Maybe one of the engineers would know more about it, and be able to point you in the right direction.