T5.1 rns315 .... I swapped the aerial out in r/h/wing mirror.... I thought the old one was better ....
So I have LED Drl's in sportline bumper when purchased, states there CAN on module, but cuts the DAB reception to almost zero, very polorized reception ...
Remove the fuse and turn the DRL's off .... it works almost as expected.
I tried ferrite chokes over the power feeds, no joy and ferrite chokes over the led feeds, still no joy. DRL's are a good visual safety point, so only solution would be a discreet windscreen aerial or pain my head into a fix ... aftermarket DRL's .... answers it all really..