Common Mode Noise Filter – Coax Radio Communication RFI Solutions Store/RFI Solution Kits/Radio Communication RFI SolutionsAntenna Rotor RFI SolutionsAntenna Rotor RFI SolutionsAntenna Switch RFI SolutionsAntenna Switch RFI SolutionsAntenna Tuner RFI KitsAntenna Tuner RFI KitsCoax Common Mode Noise FilterCoax Common Mode Noise FilterCommon Mode Noise Filter - AC or DC PowerCommon Mode Noise Filter - AC or DC PowerFeedline Chokes & Static BleedersFeedline Chokes & Static BleedersHF/VHF Transceiver RFI/Noise KitsHF/VHF Transceiver RFI/Noise KitsLinear Amplifier RFI KitsLinear Amplifier RFI KitsMicrophone/Speaker Audio RFIMicrophone/Speaker Audio RFIPortable and Mobile Radio RFI SolutionsPortable and Mobile Radio RFI Solutions 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