Some one sent email asking what is the maximum practical range for 802.11n, and how I can get the most range?

Wireless range is difficult to define because it is influenced by various factors. The big variable is data rate. For example, it’s possible to extend the range by lowering the data rate. Data rates and effective ranges are also impacted by electrical and physical interference to the wireless radio signal. This includes interference from wireless telephones operating in the 2.4GHz or 5GHz frequencies used by
different 802.11 standards, along with physical interference, such as walls, floors, windows, and other obstructions between the wireless NIC and the wireless access point. Even manufacturers don’t list absolute ranges. Instead, they note maximum ranges that the devices are theoretically capable of reaching.

From a more practical standpoint, 802.11n should easily provide wireless coverage at excellent data rates, about 250Mbps or more throughout your entire house, though it’s usually a good idea to locate
the wireless router centrally in the house. Outside, you’ll find that you can probably maintain your 802.11n connection to a range of about 200 meters or more. Just remember that the signal strength and the
resulting data speeds will fall off as you move farther away.

You can get the most range by minimizing interference and physical obstacles between your wireless points. If you use cordless phones,
be sure that the phone operates outside of the 2.4GHz and 5GHz frequencies used by 802.11n.

The use of high-gain or directional antennas can also help maximize wireless range, but they will add cost to your wireless setup.

Tags: Wireless-G, Wi-Fi, Wireless