I bought this item based on the reviews. Most of the relevant ones said that you must pay CLOSE ATTENTION to the installation instructions. I did. I spent 3 or more days testing different locations until I found one that worked the best. There is ample vertical and horizontal separation between the base unit and the antenna. When you install, the number of flashes from the unit shows how well you installed it. The less, the better. Mine indicated the best installation by 0-1 flashes.Since I had a decent signal to work with, I assumed that I would get a great signal with this booster. I used to drop 1-2 calls a day and my reception was not great, but it was there. Now I have a $300+ box, an ugly antenna on my house and barely better reception. It IS better, but not what I expected for this price. When I called their customer support line and complained about my results, they suggested adding a $100+ antenna. Ummmm... I DON'T THINK SO.I suggest that instead of buying this antenna, you search for the provider that has the best reception in your area.I do not recommend this product.