(Pack of 2) Perfect Vision Pvdp3 High Grade Diplexer Pvdp3 Pack of 2 Combine satellite signal with catv /off air. it does not work with Directv swm technology Use another diplexer at end of line another to split the signals back Use a diplexer to combine a low-band frequency and high-band frequency on one line Single Port Power Passing 40~2300 MHz