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Wireless Video over Wi-Fi – 2.4GHz and 5 GHz

Last updated Mar 20, 2020 | Published on Aug 9, 2019 | Podcast

Wireless Video over Wi-Fi – 2.4GHz and 5 GHz

The 2.4 GHz Wi-Fi frequency band (ranging from 2.4 GHz to 2.47 GHz) is extremely crowded. Notice that only channels 1, 6 and 11 do not overlap when used at their full bandwidth of 20 MHz. The heavy traffic within this frequency band is due to the great popularity of wireless connections for all types of portable equipment including laptops, tablets, security cameras, and many other devices. Also, because this band is unlicensed, there are essentially no protections that prevent another user from turning on their device and causing harmful interference at any time in any location. These factors often combine to make the 2.4 GHz band of Wi-Fi less desirable for professional quality wireless video transmission.

The 5 GHz band is a significant improvement over the 2.4 GHz band, although it is subject to most of the same technical issues. Historically, most laptop and tablet devices have not included 5 GHz Wi-Fi radios, so in general, the level of interference is much lower than at 2.4 GHz. In addition, there are significantly more non-overlapping channel frequencies available (a total of 21) in two blocks from 5.15 to 5.35 GHz and 5.47 to 5.825 GHz These factors combine to make the 5 GHz band a much better choice for professional video applications that use unlicensed Wi-Fi connections.

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