![]() ![]() On this scale a difference of 3 dBm leads to a halving or doubling of the previous signal’s strength.īackground noise levels that can impact your WiFi performance are also expressed in dBms. The dBm scale is logarithmic rather than linear, which means that the changes between signal strengths do not scale in a smooth and gradual manner. Therefore, a signal of -40 is more powerful than a signal of -80 since -80 is further from 0 and therefore a smaller number. This term stands for decibels relative to a milliwatt and is expressed as a negative number from 0 to -100. The most consistent method of indicating signal strength is with a quantity known as a dBm. Before delving into which signal strengths are appropriate for certain uses of your WiFi network, let’s discuss how WiFi signals strengths are measured. The strength of the WiFi signal throughout the network’s coverage area directly impacts the ability of users to perform various activities in a timely manner. Others you might see are 802.11b which is the slowest standard and 802.11g. ![]() Some of the more common ones you will see are 802.11n which is used on the 2.4GHz band and 802.11ac primarily used for 5GHz transmission. There are a number of different varieties of the protocol that are used in WiFi networking. WiFi signals use the 802.11 networking standards when transmitting data. These are higher than the frequencies used for televisions or cell phones and allow more data to be carried than do the lower frequencies. The radio waves which comprise WiFi signals make use of the 2.4 GHz and 5 GHz frequency bands. Conversely, data received from the Internet is converted from binary data into radio waves for distribution to the devices that are using the network. The router decodes radio signals received from the users of the WiFi network and transmits them to the Internet. The wireless network router is the interface between a wired connection to the Internet or other Ethernet network and the wirelessly connected devices. These devices may include computers, mobile phones, tablets or network routers.
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