I am pretty amazed that the air uses a form of WiFi and can get the distances it can. However, I was not always so impressed. When I first got the air I was lucky to get 500 feet with a clean video feed.
I decided to put together a two part video deities on the WiFi showcasing the bad signal and how I corrected that.
This could help you to know.
Mavic Air Distance / Range Test and WIFI Settings - Part Two
lvl.3
Captain