A broadcast system which utilizes an impedence-matching Transmitter Coupling Unit to place a Radio Frequency (RF) signal over the AC wiring of a building. This method essentially turns the AC power wiring of a building into an antenna which covers the interior of the building and some of the surrounding area. A typical system would consist of a transmitter and coupling unit in each building which required coverage and a Distribution Amplifier to send audio to the transmitters via telephone lines or audio Codecs.