posted on Jan, 24 2013 @ 05:21 PM
If it helps, I can share my personal experience on this. In trucking I had an Alfa antenna set up with the long range antenna and enough USB cable to
put that at 13ft above ground level (Semi-Truck). That arrangement allowed me to connect to truck stop Wi-Fi's up to a full mile away and these were
locations with multiple antennas mounted on roofs and designed to cover large outdoor areas like the parking lots and surrounding area.
It's weird though....because I ran a few scanner type programs to explore the capabilities of my setup while rolling a few times too. I'd set the
same external antenna up on the dash with the extended antenna and leave it running for a few hours with a log running to check later while I went
across various areas from city to the open fields of Central Illinois and Iowa. Cities would show hundreds of Wi-Fi points at least within detection
range all the time.....but then, I ALSO got up to a dozen hits on a regular basis in areas I couldn't even see lights of farmhouses outside a mile or
more away. I never tried connecting ...as I was rolling while this was scanning and recording. However, it still showed them clear as day....and it
didn't make much sense.
I actually started wondering how many things OUTSIDE people's homes may be generating Wi-Fi. I can't prove it but I swear some of that was coming
off cars passing around me. I'm in a truck and I can see down into vehicles....people weren't lit up with computers and this was a 2-3+ years ago.
Prior to personal/portable 'hotspot' devices being common or generally very affordable.
Dunno if that helps..but it's what I directly observed in playing with all this across all kinds of geography and parts of the nation.