The ANTOP Smartpass Amplifier, AT-601W, is designed to work with any non-amplified/passive antenna to boost the over-the-air TV signals received. The Smartpass Amplifier?s all-in-one design, allows you an easier connection and more possibilities in receiving different signal ranges. You don?t have to hesitate any more on deciding between a short range and long-range antenna! ANTOP?s Smartpass Amplifier delivers the correct range for you. Features a dual-color indicator: Green for long reception and Yellow for short reception. The attached coaxial cables offer connection flexibility to enable a wider antenna placement for better reception. The included 4G LTE Filter blocks 3G and 4G wireless signals for better reception.