# Signal Strength and Distance

I will be very thankful if you could clarify something to me.

Assume I am standing at point A and scanning WiFi around me. My phone records an access point X with a signal strength, let's say -50 dBm. I use FSPL (Free Space Path Loss) formula and calculate that the AP (Access Point) X is somewhere in radius of 5 meters around me. Then I make another scan, but this time record an AP X with a signal strength -75 dBm. The same FSPL formula suggests that X is somewhere in radius 55 meters from me.

My question is - can I safely assume that X is no farther than 5 meters from me ? Because if not and it is let's say 10-20 meters away, how can I explain a signal strength of -50 dBm, which corresponds to 5 meters distance. Is it possible that signal strength from a farther location will be stronger than from the nearer location ?

• Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you can provide and accept your own answer. – Ron Maupin Dec 25 '18 at 9:30