I am using a high gain USB WiFi stick with Astroberry, additionally to the builtin WiFi. The builtin WiFi still works as an access point, whereas the external WiFi stick will try to connect to my home network. I sometimes had issues getting a good connection to my home WLAN network outside in the garden. The external USB stick was an improvement. Also, if the connection to my home network got stuck, I can still connect directly to Astroberry as a fallback.
I cannot remember the details, but setting it up was straight forward with the network manager.

CS
Guido

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