When choosing a wireless setup for your home or local area network, it is important to ensure that the wireless data will reach its intended destination. While the WiFi protocols have advanced during the 2000s, the general technology is limited by many physical obstacles. Therefore, wireless devices will be tagged with various characteristics that reveal the device's strength. Two of these measures, which both relate to one another, are the decibel gain (dBi) and the distance in kilometers (km) that devices are expected to reach. There is no direct conversion rate; instead, each available dBi has a set kilometer distance assigned to it, depending on speed.
Know that on a low-speed device, 24 dBi is 26.2km, 14 dBi is 19km, 12 dBi is 17.3km, 10 dBi is 15.8km and 7 dBi is 14.1km.
Know that on a standard-speed device, 24d dBi is 24.5km, 14 dBi is 16.9km, 12 dBi is 15.4km, 10 dBi is 14.1km and 7 dBi is 12km.
Know that on a medium-speed device, 24 dBi is 21.8km, 14 dBi is 14.4km, 12 dBi is 13.1km, 10dBi is 12km and 7 dBi is 10.2km.
Know that on a high-speed line, 24 dBi is 19.4km, 14 dBi is 12.8km, 12 dBi is 11.2km, 10 dBi is 10.2km and 7 dBi is 8.7km.