Need just enough WiFi power to get the signal to fill a dead spot or to reach out into the recess yard? Amped Wireless’s WA12 antenna can put the stub antenna that comes with most routers to shame. Rated at 12dBi – roughly three-times the sensitivity of typical WiFi antennas – the WA12 boosts the signal in all directions and can make your school’s network reach further. It works with 802.11b, g and n networks and doesn’t require installing any software to operate. Just plug it into the router. That is, if the router has a removable antenna. It will cost $35.