Update from Tehran
Effect of different antennas on the RSSI
In the following document which has been provided by Mohsen Adli (one of the community members), You can check the effect of some different antennas on RSSI lev

In the following document which has been provided by Mohsen Adli (one of the community members), You can check the effect of some different antennas on RSSI level in a LoRaWAN:
http://bit.ly/2ftovox