I run a 3db gain fibreglass antenna mounted on a swivel mount, for the DAB+ signal. I have it mounted on the opposite side to the existing AM/FM antenna. It's a little longer than the AM/FM antenna, so it looks a bit like twin antennas.
I get excellent DAB+ reception all over town and, for a long way outta town. The swivel mount I'm using at the moment is a bit ugly but I plan to make a much better one, in fact I'll make two and replace the AM/FM antenna with a better fibreglass antenna that 'll better visually match the DAB+ one while I'm at it.
"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"