"The digital switchover (DSO) is the commonly accepted name given to the process of changing the underlying radio broadcast technology from the outdated analogue system to a system based on equipment capable of transmitting and receiving digital signals. This guide was produced to help with the process of implementation and is aimed at those involved in the process. Of course, the DSO is a process that affects citizens as part of the broadcasting audience and potential users of mobile broadband, but this guide is aimed at groups and individuals implementing the DSO, including policy makers, regulators, telecommunications operators and service providers, and broadcasters and media professionals." (Introduction)