Used on a WRT160NL DD-WRT firmware ... I'm so 2 antennas like this and it allowed me to win 6 mêtres end wifi scale.
What he actually ... I missed!
The antenna is magnetic (2 large neodymium magnets) and comprises two slide holes to put the screws and slide the top antenna.
The antenna is oriented in 3 inclinations.
It is 2 times higher an antenna manufacturer and 6 times the manufacturer of antenna.
The cable is long enough to create, with 2 antennas, an antenna width of 3 m (with the router in the middle).