 802.11b
Most WLANs deployed today use 802.11b technology, which operates in the 2.4 GHz band and supports a maximum theoretical data rate of 11 Mbps, with average throughput falling in the 4 Mbps to 6 Mbps range. In a typical office environment, its maximum range is 75 meters (250 feet) at the lowest speed, but at higher speed its range is about 30 meters (100 feet). Bluetooth devices, 2.4 GHz cordless phones and even microwave ovens are sources of interference (and thus create poor performance) for 802.11b networks. Minimizing interference can be difficult because 802.11b uses only three non-overlapping channels. 802.11b products have been shipping in quantity for several years so you will find that products are plentiful and affordable.
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