Digital Radio Mondiale is a consortium of broadcasters, manufacturers research institutes and stakeholders that have decided to work towards a world-standard for Digital broadcasting in the frequency bands below 30 MHz (i.e. the LW, MW and SW frequency bands). The base specification has been completed and was delivered to the ITU in December 1999. Field trials were conducted and revisions to the specification were completed by 2001 when roll-out of the broadcast technology started.