. Thank you for buying the RadioShack Lighted Clock TV/FM Antenna. It is perfect for receiving HD (High Definition) signals, and improving your TV or stereo receiver’s FM reception. You also can switch between the antenna and an external signal, such as cable, satellite or a video game. And, the large-digit display lets you see the time and temperature at a glance. 1. Lift the battery cover off the battery compartment on the bottom of the antenna base. 2. Insert two AA alkaline batteries (not