I know professionals with cool expensive toys will laugh their asses off, but this is the best I can do: one smartphone with WiFiman from Ubiquiti.
wAP ac and Samsung Galaxy S9+
1. Direct line of sight at 3 meters distance
2. Behind a 19 cm thick concrete wall at 6 meters distance
3. Behind two 19 cm thick concrete walls at 15 meters distance
hAP ac3 and Samsung Galaxy S9+
1. Direct line of sight at 3 meters distance
2. Behind a 19 cm thick concrete wall at 6 meters distance
3. Behind two 19 cm thick concrete walls at 15 meters distance
hAP ac2 and Samsung Galaxy S9+
1. Direct line of sight at 3 meters distance
2. Behind a 19 cm thick concrete wall at 6 meters distance
3. Behind two 19 cm thick concrete walls at 15 meters distance
