To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
It did little to make the signal stronger, it did little to extend it in any way, it provides just about the same signal strength as the factory antenna my PC came with. Easy to install and hassle free are the only positives here.