Now wireless computer networks have received a wide circulation. According to tests Wi-Fi alliance, the wireless adapter of a personal computer is capable to establish connection with a sluice on distance of 12-18 m in domestic conditions and 18-24 m at office. It is less, than radius in 45.7 m, theoretically predicted by some manufacturers of devices Wi-Fi. The most widespread standards of wireless networks today are IEEE 802.11b and 802.11g. The equipment of such networks, according to IEEE, are worked in a range of 2400-2483,5 MHz and is capable to transfer the data with the maximal speed 11 and 54 Mbit/s correspondingly. Real speed of data transmission strongly depends on a level of handicapes to which problem of reduction the this research is devoted.