here be my story : I live in socal with Time Warner Cable as my provider . I have 1 line come to the house that be split 3 way : 1 -rrb- strongest signal directly to the modem ; 2 -rrb- one line driectly to the cable box\/dvr in we family room ; 3 -rrb- the third line be split use this Motorola signal booster to 4 other tv . it work perfectly . no signal loss at all to the 4 other tv . prior to this I be use a 3 way splitter I find leave over in my attic . it send the signal to 3 tv but when I add the 4th -lrb- pip on my Family room tv -rrb- the signal degrade alot . add this and now all work perfectly . the power source for this unit be awesome . I have the splitter mount in the attic and run coax to a convenient outlet for power . I highly recommend this if you be splitting signal to multiple tv .