Stubby Aerial Problem

Had a stubby aerial on my MK4 before I traded it in, now swapped it onto my Boc.

Appear to be getting no reception with it however, is there any aerials available to buy that work fine? or am i better sticking to the OEM one?
 
hmm, had a stubby on my mk4 and it worked fine. noticed that even the standard aerial on the mk5 gives poor reception. don't really use the radio much but its ridiculous that it doesn't work properly
 
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