Common Mode Noise Filter – Coax +3 Worked All Neighbors RFI Award Certificate - FREE Download WANA $0.00 In stock Quantity: 1 Add to Bag Product Details Free download of Worked All Neighbors Award for RFI Offenders! Got RFI issues with your neighbors? - Well, get the award OR fix your RFI with our RFI Solutions. Save this product for later Favorite 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