Internal DAB antennae are rubbish, even the "through glass" externallly mounted ones, theres one on my Zed Have a look here and get an externally mounted amplified DAB antenna to replace the exisiting antenna. I put one on the van with my Alpine DAB unit and it really is the dogs, virtually no burble or signal loss. http://www.dabonwheels.co.uk/ I keep meaning to look into it but I prefer the Zorst noise, for longer journeys I use my ipod