I live in a stone built farmhouse (DAB radio signals do no travel through stone Walls!!) in Gwynedd there is no local transmitter that doesn't have a mountain between us and it, so as with 90% reliable Freeview our signal comes from South Wales across cardigan Bay.
Freeview comes via a high gain rooftop aerial, DAB is a very hit and miss affair with precise location of the radio making all the difference, but I had a Yamaha mini system in a fixed shelf location and a Roberts portable that simply had to be balanced on a pile of books (and a chicken sacrificed) before it worked.
Intermittent burbling on all four of my DAB radios (I won two otherwise I'd come to the conclusion they're not really worth owning here) simply a fact of life. (the others a Revo Pico and a Pure Oasis Flow are on window ledges in optimum locations and weather permitting seem to function 80% well 90% of the time.
Posty arrived half an hour ago with two of these (took risk and saved on postage)fitted one to the fixed Yamaha and another to the Roberts which now has to be in a fixed location (the only drawback I can see with these).
Roberts in a location where it worked badly is now working well (though I need to see what happens when the next Atlantic High comes in) Yamaha in a location where signal sweeps previously picked up no DAB now working well.
and who knows one day may be DAB might almost be as good as FM.
PS DAB car radios!!! in Snowdonia!!!! yer 'avin a laff