Antenna to modem Huawei E5170s-22?

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1

Have a very weak LTE signal and therefore connected an Atenne, but has only slightly improved, should there still change the settings (because of Atenne)?

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For LTE you need 2 antennas and yes, reception is a lot better

Antenna for mobile router? Or Organisation
LOS lamp RED? Th ThumbEllis
Improve LTE reception? Ro RoastWealthy616