Don't toss your router until you give it some extra distance with this omni-directional antenna. This antenna screws into the back of most wireless routers - easily replacing one of those feeble black antenna.

The D-Link ANT24-0700 is a high-gain omni-directional antenna designed for 2.4GHz ISM band indoor use. This antenna provides high transmission/reception rates for wireless LAN devices operating on the 2.4GHz public industrial, scientific and medical (ISM) frequency band. It can be used with 802.11b and 802.11g wireless LAN devices such as access points and remote routers. This antenna can be used to replace the default antenna of your wireless device to expand its operation range. It can be connected to your wireless device through an extension cable (provided with the antenna), or directly attached to your wireless device. This item is lightly used. There are magnets in the base so you can easily mount it to the side of a computer case or any other metal object. The cable is about 5ft. long with an sma connector.  A TNC adapter will  be included.