1byone 45~60 Miles Amplified Indoor HDTV Antenna for UHF/VHF/FM, Included Power Supply, 10 Feet High Performance Cable, Handsome Thin Flat Panel Design, Black Color Fits Your Home Decor Never Pay Your Cable or Satellite For Television Again! 1byone antenna can pull in all of your local news, weather, sitcoms, kids and sports programming absolutely FREE! Just plug it in and connect to your television and let the antenna do all the work. Built-in high gain and low noise amplifier. If you cannot receive any channels, please remove the power adapter and try again. The built-in amplifier need power to work properly. While we do not recommend to use this amplifier/booster if your house is very close to the broadcast tower and the signal is already very strong. A booster will cause self-oscillate and you may get fewer signals than without. So remove the power adapter, the amplifier will not work. 10-foot coaxial cable makes it easier for you to place it at the best position in your house to get the best reception, especially for customers whose televisions are quite far away from windows. Channel reception will vary depending on what's being broadcast in your area, how far away you are from broadcast towers, and your surroundings (i.e. obstructions between you and the towers). BUYER GUARANTEE - We stand behind our antenna 100% with one year warranty. We do offer a 30 day money back guarantee on all new items in order for you to test the suitability in your area.