This doesn’t apply to all radar stations that have been deployed there are many radar installations do not use 5GHz. This means that they may use some of the same frequencies that are used for Wi-Fi networks. Some types of radar installation operate in the 5GHz band that is used by Wi-Fi network.
One particular service that shares spectrum with wireless LANs is radar. channel widths used, spectral masks etc.).Įven though they may be licence-exempt, Wi-Fi networks are still subject to restrictions to minimize their impact on other wireless services and equipment in the same areas of spectrum used by WLANs. This may include restrictions on parameters such as RF transmit power levels and limiting the spectral characteristics of transmitted signals (e.g. This is in contrast to many other areas of the radio spectrum that generally require some form of (paid-for) licence to operate radio equipment.Īll wireless services are generally subject to a range of enforceable technical restrictions to ensure they operate in a manner that will minimize interference to other wireless services. Wi-Fi networks operate in areas of RF spectrum that require no licence to operate.
However, beneath the headline of “2.4Ghz = bad, 5Ghz = good”, there lurks a shadowy figure that can be troublesome if you’re not aware of its potential impact: DFS. 5GHz has far more channels available, a corresponding lower number of devices per channel, and generally suffers much lower non-Wi-Fi interference. Many wireless LAN professionals will generally advise that you put your “important stuff” on the 5GHz band whenever possible. The 2.4GHz band has a reputation of being something of a “sewer” of a band, due to its limited number of usable channels, the number of Wi-Fi devices already using the band, and the high levels of non-Wi-Fi interference that it experiences. Wi-Fi networking provides us with 2 bands for the operation of wireless LAN networks: the 2.4Ghz band and the 5GHz band.
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