Provided that you are within the 3G/LTE signal range a suitable antenna will provide you with higher data rates as your signal to noise ratio is increased, thus a better transfer rate can be achieved.A high gain antenna mounted outside in a fixed position aligned with the relevant base station will give you best possible performance and result in a more stable signal.Please bear in mind that the 3G/LTE data rate will also be affected by the number of subscribers online at a particular time, so don’t be surprised if throughput varies during the day. Also, rain, trees and metal obstacles can influence your throughput rate.’This video explains how an outdoor antenna works:

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