Tip 6: What are the possible sources of interference?
Unfortunately, maximum ranges tend to be purely theoretical, since sources of interference limit range. Within buildings, walls and storey ceilings present obstacles for the propagation of the WiFi signal. Metal walls and reinforced concrete ceilings are particularly disruptive. In addition to these passive sources of interference, there are a number of active interferers. For instance, any electrical device can impair WiFi. Microwave ovens can be especially bad. Because the usable frequency band is quite narrow, other WiFi routers in the near vicinity also create interference. This is because they often use the same wireless channel, and the two signals impair one another.
Find out more about causes and sources of interference