The short answer is that they can do this much the same way as more and more people are getting concerned with radiation from our many wireless technologies.
How To Get Wifi Through Concrete Walls. A common point of wisdom when it comes to routers is that the the antennas do serve a purpose of pushing through concrete or brick walls easily. Over at the church i have a staff office that has a router hooked into their room.
RF Capture device can identify people behind CONCRETE ... from i.dailymail.co.uk
So if you and all of your neighbors have multiple devices competing to get a wifi signal from the same. Can anyone suggest any possible solutions and also the directional radios, we think, have a lot to do with how well these perform in environments like yours, they get through walls. Band for penetrating concrete & brick walls.
But in this question , the answers are w.r.t to or in comparison with microwaves , their absorption and certain other things.
Currently it is owned by a church, and they are letting us use it for office space. Specifically w.r.t the range and reception. Barriers like heavy furniture and walls made of thick concrete or brick can. In my basement so i can watch netflix.
