Quick view Channel Plus NF-469 Notch Filter Removes CATV 64-70 and UHF channels 14-19 The Model NF-469 Notch Filter couples the incoming signal source coax cable to the input on a splitter or bi-directional DA-series amplifier. Once installed, the NF-469 filters out channels to make room for modulated channels. In addition, the NF-469... $51.35