In large project areas (such as marine or mining projects) where you have to cover many long distance small offices that spread out around the project, generally outdoor wireless devices are used including the high power and long range Wifi devices.

The main office with internet connection and the data center of the projects typically deploy high gain wireless access point with high power Omni-directional antenna to cover long distance areas and broadcast to all directions. In some offices with dedicated LAN networks, they generally implement wireless bridge to join to the main network with high gain directional antenna to point to the Omni-directional antenna in the main office. Or any single computer or laptops in long distance areas join to the network by using the high power 1000mW or 2000mW USB adapters by pointing the directional antenna to the main office where Omni-directional antenna is installed.

There are various models of long range Wifi adapter available in the market today, the 1000mw adapter or 2000mw adapter with wireless G or wireless N standards such as those long range Wifi adapters from Alfa.

Alfa AWUS036H 1000mW USB Adapter

This Alfa AWUS036H is powered by Wireless G standard with the following features:

• USB 2.0 adapter with wireless G standard and is backward compatible with 802.11b devices
• High power 1000mW adapter with two types of antennas, 4 inch 5 dBi screw-on swivel rubber antenna and a 7dbi panel antenna
• Includes various OS drivers including Windows 7; XP; Vista; Linux (2.4.x / 2.6.x) and Mac (Mac OS 10.3 up to 10.5) if your Mac OS is 10.6.7 and later, consider the AWUS036NHR, AWUS036NH, AWUS036NEH and AWUS051NH.
• Supports any types of wireless security encryption including 64/128/256bit WEP Encryption, TKIP, 802.1X support, Wi-Fi Protected Access – WPA, WPA-PSK, WPA II

This long range adapter is based on wireless G standard. For higher speed, you may consider the wireless N high power 2000mW adapters.

Alfa AWUS036NHR 2000mW Adapter

For more power, this is your 2000mW adapter Alfa AWUS036NHR with the newest strong Realtek Chipset.

Main features:

• Unlike the 1000mW adapter, this one is powered by 802.11b/g/n delivering the speed up to 150Mbps with single 2.4GHz band
• You can upgrade the existing 4-inch 5dBi screw-on swivel rubber antenna with 9-dBi antenna
• Available drivers for Windows 7; 2000; XP; Vista and Mac (10.4.x/10.5.x/10.6.x)
• Support high security wireless encryption including  64/128-bit WEP, WPA, WPA2, TKIP, AES4n, 802.1X support, WPA-PSK, WPA II-PSK, Cisco CCX support, WAPI-PSK, WAPI-CERT
• The good thing is that it comes with utility software to scan the available network and you can save any preference network you mostly use.

There are still many various models of long range wifi adapters for connecting to long distance network.

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