does this do anything beyond the capabilities of a vanilla kali install?
$ sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport ~/bin/airport
$ sudo airport sniff
$ tcpdump -r /tmp/airportSniffxxxx.cap | lessThere's bunch of cool options, including WiFi quality scan.
‘jzelinskie has the short instructions in their comment.