Abstract: An aerial message system uses a plurality of aircraft flying in formation to form a visible message in the sky. A lead or master aircraft carries a small computer which may be programmed with the message(s) to be formed, as well as other factors such as the true airspeed of the aircraft and the configuration of the formation. An interface and encoder are placed between the computer and a transmitter aboard the lead aircraft, with the interface and encoder serving to accept a signal from the computer which is compatible with a dot matrix printer, and reformatting the signal to output to the transmitter. The transmitter transmits a plurality of discrete pulses or signals to the receiving or slave aircraft, with each of the slave aircraft receivers being tuned or adjusted to receive a signal corresponding to the position of that aircraft in the formation.