Normal two way radio is a Half-duplex,only one direction at a time (not simultaneously). Actually,once a party begins receiving a signal,it must wait for the transmitter and stop transmitting before replying.But our new product of dual band duplex radio solved the above problem.It? working type is full-duplex,it allows communication in both directions(allows receiving and transmitting to happen simultaneously). Land-line telephone networks also are full-duplex.It allows both callers to speak and to be heard at the same time. A good analogy for a full-duplex system would be a two-lane road with one lane for each direction.

Below is the Difference of Half-Duplex and Full-Duplex