Directional WiFi Antennas
Remember, line of site works best when you are sending and receiving 802.11, so try to mount the antenna free of trees and buildings if possible. We recommend using two directional antennas if you really want a strong signal. Even if you mount one directional antenna outdoors and connect it with the wireless router, the other computer (or wireless access point, wireless bridge, etc) may not get a strong signal if it is indoors in the other building. So basically, two external directional antennas will allow you to share a high speed wireless network. But if you are really serious, get a wireless amplifier and have those friends throw in on it!
This is the common “Base” antenna used for Point-to-Multi-Point or can be an omni-directional antenna for your car. An Omni-Directional antenna would serve as your main antenna to distribute the signal to other computers or devices (such as wireless printers, PDAs, etc) in your workgroup. You can use 2 Omni-Directional antennas for a point to point system, but this is usually not recommended because there is no real point to distributing your signal all over the place when you only want to going from point A to point B. Please refer to Directional antennas above. Typical Omni-Directional WiFi antennas consist of Vertical Omnis, Ceiling Domes, Rubber ducks, Small Desktops and Mobile vertical