NF-470: Notch Filter

The Nortek Security & Control Family of Brands

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 (CATV).

The Model NF-470 Notch Filter blocks incoming CATV channels 70-74 and off-air UHF TV channels 19-23, allowing 5400, 5500, and SVM series modulators to insert TV channels without interference.

NOTE: To avoid interference, be sure there’s an empty channel on each side of a modulated channel.

Features

  • Notch filter frequency 499.25 MHz to 523.25 MHz
  • Rejects CATV channels 70 to 74
  • Allows insertion of CATV channels 71, 72, & 73
  • Rejects off-air UHF TV channels 19 to 23
  • Allows insertion of UHF TV channels 20, 21, & 22
  • 3.25″ L x 1 W”

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