[simne]

It depends on scale need to achieve. 1000 beacons easier for one town scale, but train model for each airfield is Earth scale(in 1990 in US was ~6000 airfields, whole Europe have less number of airfields).

Also exist some nuances, as some cities are flat but others have large hills, so need to place few beacons on sides of hill (rough surface need much more beacons).

Practically, I have experience in project to deploy LoraWan network in large city Kiev, and one concurrent bought research from cellular network planners and for first look they drawn ~300 access points to have more than 99% coverage.