High-end Specification Ferrite Toroid Core Replacement for Amidon FT-240-31 or Fair-Rite 2631803802.

Decrease noise in antenna systems and improve signal clarity. Reduce RF HF frequencies.

2.4 inch Outer Diameter Width / 1.4 inch Inner Diameter Width / .5" Thickness Depth

Excellent for taming RFI issues, EMI suppression, Common Mode Chokes, Balun, Unun, Transformers, Impedance Matching, Reducing Signal Loss, Inductors, Power Line Filters, HAM, CB Radio

31 Material specifically for EMI suppression applications. It does not have the dimensional resonance limitations associated with conventional MZn ferrite materials. High Permeability.