+9dB 15" Booster Antenna for "Linksys" with RP-TNC Connector Replaces Factory Standard Antenna and Boosts the Range of your Router as much as 4x Fits Most Linksys Routers including: WAP11, WRT54G, WRT54GS, WAP54G, and BEFW11S4 (fits all RP-TNC connections) Some Routers will require two (2) antennas for extended range performance Omni-directional with +9 dB gain (compare to +2.5 dB on factory standard antennas)