How the base station looks like?
Each base station comes with two antennas that are easily interchangeable by the user:
omnidirectional and
directional. Their purpose has been described
in
the answer regarding downloading range.
Here is how base station looks like with
omnidirectional antenna attached (ruler on the photo is in centimeters, plug at the end of the cable is standard USB):
Antenna can be bended by 90 degrees:
Here is how base station looks like with
directional antenna attached: