The SureCall Fusion Professional comes with a yagi directional antenna. It needs to be pointed at your source of signal, or cell tower. < br > We recommend placing it as high as possible on your roof.This helps reduce oscillation between the outside antenna and the indoor antenna.The antenna should be securely fastened to a pipe, mounting pole, or protrusion.Make sure your connectors are weatherproofed. < br > You'll want to find your nearest cell tower and point the antenna toward it.That will gain you the largest amount of signal. < br > Your cable will need to be run inside your home and hooked up to the amplifier.Then, set up your indoor antenna with 20 feet of vertical or 50 feet of horizontal distance separating it from your rooftop antenna, plug in your Fusion Professional amplifier, and switch it on.You should see a significant improvement in the quality of your signal. < br > Please call us at 1-800-638-6336 for a free consultation and answers to any other questions you might have.