The MFJ-701 Snap-On-Choke kit allows you to easily eliminate or minimze radio frequency interference (R.F.I.). Simply wind the offending cable around this RFI suppressing toroid to get rid of RFI. Four square ferrite toroids are formulated especially for eliminating RFI from 500 kHz to 200 MHz. Wind on all kinds of cable - computer ribbon, TV coax, power cord, telephone etc.
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