I use this one from Amazon [https://www.amazon.co.uk/dp/B0D2MNRKWC?ref=ppx_yo2ov_dt_b_fed_asin_title] and I am surprised how well it works with the windscreen mount. I have had windscreen mounts before with bad performance but follow the instructions and definitely, as suggested above scratch/grind the paint off the metal and smooth it out with fine emery cloth or sandpaper and clean it, make sure all the copper strip is in contact with the bare metal. Also give the window a good clean before sticking, yes its a bit of a faf but its worth it. I have 92 stations with full signal and very few dropouts
Terrible DAB reception with official Mekede USB adapter
robdx2 Thanks. If all else fails I may give one a try (although I did read somewhere that most of the devices actually use the same chip?).