How Does WiFi Work?
Similar to the traditional transistor radio, WiFi networks transmit information over the air using radio waves, which are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
WiFi radio waves typically have the frequency of either 2.4 gigahertz or 5.8 gigahertz. These two WiFi frequency bands are then subdivided into multiple channels, with each channel possibly being shared by many different networks.
When you download a file over a WiFi network, a device known as a wireless router first receives the data from the internet via your broadband internet connection and then converts it into radio waves. The wireless router then emits the radio waves to the surrounding area, and the wireless device that has initiated the download request captures them and decodes them.
Because WiFi depends on radio waves, WiFi networks can be disrupted by interference caused by other WiFi networks or various electronic appliances, including microwave ovens, cordless telephones, refrigerators, televisions, transistor radios, or Bluetooth devices.
To ensure optimal WiFi performance, network administrators often rely on WiFi analyzers such as NetSpot to visualize, manage, and troubleshoot WiFi connections. NetSpot can generate a comprehensive visual map of WiFi networks, highlight areas of signal weakness, and reveal potential causes of interference. In the current era of omnipresent WiFi networks, a tool like NetSpot is indispensable even when setting up a basic WiFi home network.