Common Mode Noise Filter – Coax LED Lights RFI Kit Store / LED Lights RFI Kit LED Light RFI kit - 1 Filter for AC Power Line RFI Suppression .15-10 MHz LED Light RFI kit - 1 Filter for AC Power Line RFI Suppression .15-10 MHz SKU RFI-LED-LIGHT $9.95 Buy Now Typical user comment: The filter was quite effective. Was surprised that it actually reduced the noise level more than the signal so S+N/N improved by 1.9 S units. Bill