Nearly 4,000 FM translators exist nationwide. Their job is to rebroadcast other stations in areas where the parent station cannot be received. They all have a similar setup as the one above with a small transmitter, a signal receiver or input device, and an antenna. The first picture is of an omnidirectional antenna which radiates in all directions. At the top of the second picture is a FM receiver and below that is the transmitter. An FM translator can be setup for about $3000.