Xterasys 2.4GHz 802.11b/g 5dB Range Extender With the xTerasys AN-5DB 2.4GHz wireless antenna, wireless reception quality can be improved dramatically, providing better signal strength to all your wireless devices. 2.4 ~ 2.5 GHz frequency range Improves wireless signal quality 5 dBi peak gain (typical) Perfect for wireless access points (AP's), PCI cards, wireless routers, etc.