we be have trouble receive some high def channel . some be pixelated , other just do not come through at all . we install the bda-s2 where the cable come into the house , and we problem appear to be fix . we cable get split to 6 different port , and this boost the signal at those port to a adequate level . fdc power level go from -17 dbmv to -6 dbmv . the cable modem still work just fine . we have not notice a improvement in its performance but we also never really have a problem with its performance .