The Model NF-470 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-470 filters out channels to make room for modulated channels. In addition, the NF-470 blocks the modulated signals from being broadcast back into the coax. The NF-470 is a perfect solution for modulation in the ever-increasing bandwidth taken up by Cable Television.
The Model NF-470 Notch Filter blocks incoming cable TV channels 70-71 and off-air UHF TV channels 19-23, allowing 5400, 5500, and SVM series modulators to insert a channel without interference. With the Model NF-470 Notch Filter you can create three modulated channels (71, 72, and 73) on CATV and three channels (20, 21, and 22) on UHF channels.