I bought this booster from Amazon based on all the rave reviews. I wasn't entirely happy with the cable signal on my big screen and I thought this would definitely help. I followed all the instructions to a tee. I hooked it up where the cable comes into the house before it splits. After I hooked it up I noticed a marginal improvement, but it still didn't fix the major issues I was having with my signal. That evening I noticed my cable Internet was much slower(!). I didn't think much of it, but the next day when I turned on my television the cable signal for television and Internet was absolutely horrible. Something must have been wrong with the unit, because as soon as I took the booster out of the loop I had the same mediocre signal I had before. I have no doubt this unit can help some, but my issues weren't corrected, and due to a faulty unit they were actually made worse.First item I've had to return to Amazon in 9 years. Which, by the way, is quite painless!