The term 'ORBIT BITS' can be broken down into two parts: ARCS (4 letters) and ORBIT. ARCS stands for 'Aeronautical Radio Communication System', which is a system of communication used in aviation. ORBIT stands for 'Orbital Radio Beacon Transmitter', which is a type of radio beacon used to transmit signals from satellites in ORBIT. Together, these two terms refer to a system of communication used to transmit signals from satellites in ORBIT.