Peter is there a reason (Aerial perhaps) that you went with the 178 and not the 196 which adds DAB ?
DAB radio works very well with a Morgan style antenna, all that is needed is a powered splitter. I fitted a good quality Hirschman antenna and for DAB Reception it only needs extending 2 sections, not 4. The Morgan OEM antenna SELLS for less than £10.00 so the quality is questionable....