The DABRF device was developed as core component of the patented tunnel break-in system, MAGIC TBR from AVT Audio Video Technologies GmbH, that, in the event of a disaster, allows to supply a street tunnel with live warning messages via digital radio. Those systems require the DAB signal containing the warning message transmitted within the tunnel to mimic the ensemble outside the tunnel, as well with regard to its multiplex structure as to its timing. If not doing so, when the emergency warning begins, the DAB receivers inside the tunnel would lose the signal, and would be required to perform a time consuming re-synchronisation.
The DABRF and the underlying techniques are covered by several patents, among others DE10134920B4, EP2846485B1 and DE102013109795B4.
In particular, since 2015, the DABRF replaces the established DAB test receiver, UEB400-DXP, within the DAB-XPlorer family of DAB analysing tools. In this application, the DABRF offers a great potential for future extensions of the collection of powerful analysis tools of the DAB-XPlorer suite.