2.4 GHz  longer transmission range –  slower speeds.
5 GHz covers a shorter distance –  fastest speeds

This relates to home wifi, below we cover video transmission for use with remote control robotics

• 802.11b – 11Mbps (2.4 GHz): Originally released in 1999, this standard uses the 2.4 GHz band and can reach a maximum speed of 11 Mpbs.
• 802.11a – 54 Mbps (5 GHz): Also created in 1999, this version allows operation on the 5 GHz band and provides data rates up to 54 Mbps.
• 802.11g – 54 Mbps (2.4 GHz): The 802.11g replaced the ever-popular 802.11b and was able to match the rates of 54 Mbps in the 2.4 Ghz band.
• 802.11n – 600 Mbps (2.4 GHz and 5 GHz): This standard was approved in October 2009 and was the first standard that allowed for both the 2.4 GHz and 5 GHz Wi-Fi frequency to be used. This was the first time the term “dual-band” was used. This standard also offered speeds up to 600 Mbps.
• 802.11ac – 1300+Mbps (5 GHz): You’ll typically find this standard in most homes operating on the 5 GHz band. This is a newer standard that uses wider channels, QAM, and spatial streams for higher throughput.
• 802.11ax: The future of wireless standards, 802.11ax, also known as Wi-Fi 6, offers faster speeds with more capacity. This new standard utilizes MU-MIMO technology, which stands for multiple-user, multiple-input, and multiple output technology used for wireless communication. This type of technology works to support wireless devices that are subjected to multiple users trying to access the wireless network simultaneously. When multiple users access a network all at the same time, this can cause congestion and slow the network down significantly. MU-MIMO allows these users to access the network without slowing the network down.