I can not tell you how many time I call my local cable tv provider -lrb- Comcast -rrb- to complain about the poor picture quality on my tv . I be unable to watch my brand new Sony flat screen hd tv due to pixelization and completely blank channel . it be happen every day . all Comcast would do be send a signal to the digital box to try to correct it . they even send a service man out to look at it . he check all the connection inside and out and tell I if the problem continue , to call . they be totally worthless . I be ready to cancel my cable tv subscription , when someone at work suggest a signal booster . so , I sign onto my favorite website in the world ! ... Amazon.com ... and find this wonderful little thing ! very simple to hook up outside where the cable wire feed into the house . it be like flip a switch . no more pixel across my screen and I be also able to pick up channel I do not have before ! it really do work . I have have it now for 2 week and have not have one problem with my tv . well worth the $ 52 I pay for it !  Motorola Signal Booster 4-port bda-s4 Cable Modem tv hdtv amplifier