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I will say that this antenna has given the best noticeable TX and RX results of any mobile I've ran before. This is testing to a base station located a very good distance away. He has confirmed on several occasions that it has the strongest signal against a Wilson 5000, K40, Wilson 1000 (all mag mounts) on my same vehicle. However the Sirio picks up a lot more noticeable static and engine noise then the others.