Wi-Fi Booster Antenna for D-link DWL520, Linksys WMP11, WET11, Netgear MA311, or D-link Aps, 2400-2483 MHz
This is wireless antenna from eforcity that can boost up to 5 times the original range of your original WiFi receiver. It has a Magnetic Mount Base which you can put it on the top of your car so you could obtain more signals. No extra pigtail is needed and it is only suitable for any modems and routers with ¼ inch external antenna port. It comes with 6 feet pigtail with reverse Polarity SMA Termination and plug and play device. Just connect it to your D-link DWL520, Linksys WMP11, WET11, Netgear MA311, or D-link and you can use it directly.
This product is fully tested with fully tested with HP RF network analyzer, ISO-9001 and can go up to 7dBi signal with frequency 2400 to 2483MHz and the maximum input power is 50W. The antenna length is 9 inch and it is Omni directional with only weight about 1.8oz. The advantage of this external antenna is its flexibility of placement. To get better result of this antenna, I would suggest you to download a program called NetStumbler. It will help you on the best placement for your antenna.
Buy here : Eforcity Wi-Fi Booster Antenna