The Model NF-471 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-471 filters out channels to make room for modulated channels. In addition, the NF-471 blocks the modulated signals from being broadcast back into the coax. The NF-471 is a perfect solution for modulation in the ever-increasing bandwidth taken up by Cable Television.
The Model NF-471 Notch Filter blocks incoming cable TV channels 75-80 and off-air UHF TV channels 24-29, allowing 5400, 5500, and SVM series modulators to insert a channel without interference. With the Model NF-471 Notch Filter you can create three modulated channels (76, 77, 78, and 79) on CATV and three channels (25, 26, 27, and 28) on UHF channels.