MFJ 701

RFI Free Choke Kit

Cancel RFI radiation due to common-mode currents or signal/noise pick-up from external sources by winding an offending cable or wire around an RFI suppressing toroid. They’re split into halves allow for easy winding on all types of cable: computer ribbon, coax, power cords, telephone lines, audio-video interconnects, etc. Particularily effective in eliminating audio from RF pickup by computers and other electronic devices. The halves mount in snap-together plastic frame and multiples can be stacked for increased attenuation. These are effective from 0.5 to 200 MHz. Pack of 4.