This paper describes recent improvements made to the acquisition software of a reconfigurable stepped-frequency ground penetrating radar (GPR) prototype, to allow real-time data visualization. In particular, real-time data visualization was not yet implemented in the previous version of the acquisition software, although this is a common feature available in all commercial systems. This was a bad problem for the GPR prototype: the possibility to visualize data in real time is obviously of vital importance, because it makes it possible for the user to easily identify promising areas in the field, or to recognize an anomalous functioning of the system without wasting a day of work. So far, real-time data visualization was not yet possible because the prototype at hand is equipped with three equivalent couples of antennas that can transmit and receive data simultaneously, which implies a quite large amount of data recorded per second. Nonetheless, by implementing suitable procedures for a more efficient data handling, the problem has been successfully solved and now the prototype is not anymore "blind" in the field.