I tried the
zBoost too, but I didnt have such results as gdgtgeek. My experience was after I set it up and powered the amplifier, I walked off to walk in every room, but I only had about a
5ft diameter from the inside antenna on the amp. I guess results aren't all positive.
I suggest that you read all you can on a product you make a decision for a purchase.
Once I sent this kit back I did just that. I found
Wilson Electronics and they referred me to one of their dealers,
Unwiredsignal.com. I did my research on the company and looked at any reviews I can find and asked them a lot of questions.
Once they gave me a recommendation, they explained how it would work, how I would set it up and how much area it would cover. I only had 2 bars outside and my goal was to cover my whole home. Ok, so I purchased the kit. When I received it, I set it up according to the instructions they sent, plugged in the amp and started to walk around my home starting from where the inside antenna was mounted.... and there it was.... that beautiful usable signal. This kit didnt just bring my signal inside, it also boosted it, now I have full bars inside! All their systems work with all and any technology the provider's tower is giving off.
I recommed to you and any one else to use
www.WilsonElectronics.com and
www.Unwiredsignal.com. One thing is its a bit more expensive, but you get what you pay for.
Again just do some research so you atleast know or have an idea of what you ae looking for and what you are trying to achieve.
Hope this helps,
John