Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: I have several tv's. I was adding one to my charter cable and the picture is fuzzy. Will this help with my signal?
Document: I purchased the 4 port booster because we have several TV's we were hooking up. We had a fair amount of "ghosting" from the last of the analog channels in our area. When the stations switched to digital the ghosting was gone but the picture on several stations became slightly "snowy".The booster worked well and cleaned up quite a bit of the snow although I was expecting a better picture for an especially long run cable (100 ft).
I am a Comcast customer. As most know, Comcast's service is HORRIBLE. After making several appointments for service due to fuzzy pictures in my upstairs bedrooms, a Comcast service contractor finally arrived at my doorstep. After looking at my four upstairs televisions, he basically told me that I needed a signal booster.I bought the Motorola 4-port bda-s4 amp. It worked like a charm. All of my upstairs televisions now have extremely clear pictures and sound. Don't bother calling the cable guys.
Just didn't help at all. Made the picture worse, may have been defective so I sent back. Just got a good splitter from the local electronics store and it help much more than the signal booster.
Before I bought this product I called the cable company on several occasions and nothing they did or told me ever helped. They mentioned to use a signal amplifier, which they were supposed to provide, but were reluctant. So I took matters into my own hands and did it myself. I recommend this to anyone who may have the occassional pixelated picture or any ghosting issues to try this product for yourself. I purchased mine off of Amazon for around $45 and it took minutes to install.
A quality item that boosts the cable signal making it possible for multiple TV's to produce a good picture. It was easy to install, the instructions were well written. I would recommend this product to others.
I have broadband internet coming through my cable and have seen no interference or problems with that. It was always pretty good so I'm unsure if there was any improvement. To me this was well worth the money. I have several LCD TV's around and it sucked to have spent the money on them but have bad reception.
Bought this because my apartment only has one working coaxial outlet in the living room. I have a 52" and cable modem in the living room, and recently decided to finally hook up the two TV's in the other two rooms. Unfortunately, (1) I only had a three-way splitter and (2) I was informed that the signal output was too low to be carried ~30 feet to the farthest room because the building wasn't even originally wired for cable.
They upgraded our cable, assured us it was near 100% signal into the house, and even checked the signal to the TV's. They even installed an amplifier.I swapped theirs out and put this one in its place. WOW. Our signal even looks better and ALL THOSE ISSUES went away!One caveat:  I noticed the Comcast guy used an amplifier and THEN split off into 3 cables AFTER the single amplified line! IDIOT!!!
My problem was connecting 3 tv's. Two of the tv's were on the end of 100' coaxial cable runs. I was getting signal loss and digital artifacts on all tvs, even the one near where the cable entered the house. Installing the the Motorola Signal Booster cleared up all the artifacts and signal loss. I also have a cable modem, so I split the connection to it off before I installed the booster. Easy Peasy took all of 5 minutes.
This dramatically improved the reception in my house. I have Insight Cable (Ohio) and have always had several snowy channels. The cable company had been out but said there was nothing they could do, as some channels just get poor reception. To make matters worse, I recently added five new splices for a total of 10. Several TV's had terrible reception. I chose this model so I could run the main cable input into the booster and then each output to a splitter.
Answer: If your cable signal is digital (most likely), it should help eliminate digital blocks that occur if your signal is marginal. If the digital signal cuts out completely, there may not be enough signal there for the booster to send to your set-top box. (If your signal is still analog, it should definitely improve it.)The booster needs to be installed at the service point where the cable comes into the house so it can boost signals for all televisions. You'll need the Motorola Power Inserter BDP-100/PI Remote Power Inserter to send power to the booster if the service point is outside or not near an electrical outlet, and it isn't included with the booster.