43.33
Km LOS with USB WiFi stick
Is it possible?
Hard to say, so before
attending the real location some calculation with the help of the software is
essential. Curiosity was the main reason, and if there is just a marginal
possibility it’s worth to give a try. All experiments and measurements are done
randomly without notices to any parties to scan the real situation on the
field.
As you can find out from the
software calculation, radio link between two identical WiFi stations is
possible with the standard equipment. In this case standard means cheap, easy
available WiFi equipment with following characteristics:
TX power : 0,02 W
RX sensitivity : 5uV (-93
dBm)
Antenna gain : 15dBi
Line loss : 1dB
Propagation over the water,
continental temperature and some other details not visible on the picture are
also considered. For the antenna height I chose 5m as average on both sides.
Limited with already
mentioned parameters, the only factor that we can play around is location of
the antenna-equipment. I choose the hill 250 meters ASL with clear horizons to
Line Of Sight is essential in
this case, clear sky, nice weather and we are ready to roll. Distance between
my location and
