Quote:
Originally Posted by DCNISMO
The small metal plate acts as a ground plane, but its small and I do get drop-outs of the satellite signal when driving under trees. The XM antenna would function better with a larger ground plane. So yes, being mounted on the outside of the car on the roof you will get better reception.
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On Balance, you do get more drops when passing under a tree, but it is not terrible. I also get those drops (not as often) with the BMW "Shark Fin" antenna on the roof.