For hardware versions older than version 1.3, in case a Wi-Fi connection is needed, connect a Wi-fi antenna to the SMA connector labeled “WIFI“. Select a good antenna placement spot considering the operation environment.
Figure 13: Wi-Fi antenna connector (hardware version older than 1.3)
Newer hardware versions don’t have an option of connecting an external Wi-Fi antenna as MIMO capability for cellular modems has been introduced. In case stronger reach is needed, a user should contact the manufacturer to provide possible solutions.
Make sure the signal level is over -80dBm to have a stable connection to the network.