This study involved DAB propagation measurements to inform DAB coverage planning and related to plans for the expansion of the UK DAB network in the context of the possible switch-off of some or all FM radio services.
The work consisted of a review of DAB planning criteria and as part of this work a drive test survey of DAB reception in hilly terrain on the Sussex coast was undertaken. The measurement vehicle, shown below, was fitted with a 230 MHz receive antenna.
Standard in house logging software was configured to record field strength in the 1.5 MHz DAB channel bandwidth, with each sample being time- and location-stamped using a GPS receiver. An example of the output of the drive testing measurements are shown below:
In addition the study reported on the feasibility, timescales and costs of making measurements on existing networks and determination of potential transmit and receive sites / measurement paths.