To make a television antenna with aluminum foil, first locate and remove the casing from a 3-foot long speaker wire. Carefully wrap an end of the exposed wire around a sewing needle, and use electrical tape to hold them together. Weave the other end of the wire around a wire coat hanger, and secure it with electrical tape before bending the hanger into the shape of a "V." Place the needle into the television's UHF port.
Cut a piece of cardboard to be larger than the bent coat hanger. Cover it with aluminum foil, and use electrical tape to attach the two. Place the cardboard against a nearby wall; this acts as a reflector to enhance reception. Turn on the television, and adjust both the hanger and the aluminum foil reflector in order to achieve optimal reception.
Aluminum foil is used in other ways to create television antennas. In a more complicated method, the wires from coaxial cable adapters are stapled to a piece of cardboard. These wires are paper clipped to strips of aluminum foil, and one coaxial cable is attached to a cable connector. The other is plugged directly into the television, and the signal is received and broadcast on the screen.
In a simpler method, aluminum is simply wrapped around a store-bought high-definition antenna in order to improve reception.