4 Port Bi-Directional Cable TV HDTV Digital Amplifier Internet Signal Booster with Bypass Port and Passive Return

If you are having cable TV picture problems this may be the product for you. It is NOT compatible with satellite TV, and will actually block satellite reception - so do not order it if you have satellite TV. This product will improve your cable TV picture and reduce pixilation, snow, and audio drop-outs that are caused by a weak signal level. It is compatible with all cable TV systems and services. You may or may not notice a difference in cable modem speed when using the amplifier. A number of factors influence cable modem speed, and there is no guarantee a booster will improve modem performance. If you are boosting an HDTV antenna signal, you should get the best HD antenna you can afford BEFORE using a booster. This signal amplifier IS NOT a substitute for a good antenna. If you are using an indoor antenna or are having HD reception problems with just a single TV attached to your outdoor antenna, this product will likely not improve your reception.