Wi-Fi

We recently upgraded our Wi-Fi through our provider. What was new was we noticed two different bands to choose from. One was just a regular band (at 2.4 GHz) and a new one showing as 5 GHz. So what is the difference? Let’s find out.

Coming right to my mailbox, I received a newsletter and there was an article referenced to it. So let’s go over it.

First we learn that 2.4 GHz will support up to 450 Mbps or 600 Mbps dependent on router class. That comes with the standards you may see on router boxes as 802.11b, 802.11g, 802.11n, or 802.11ac. Not sure what mine was since it’s not printed on the box itself, I found the manual for it online and found it has all the above! So let’s chase this rabbit and find out what the difference between these classes are.

802.11b was better than the original 802.11 standard in July 1999. It brought the speed up to 11 Mbps. 802.11g, brought about in 2002, is supported by all devices and network equipment and supports up to 54 Mbps bandwidth. It is the least expensive to buy and run. 802.11n came about in 2009 and gives up to 800 Mbps bandwidth, an improvement over 802.11g but a little more expensive than 802.11g. 802.11ac has the fastest maximum speed and best range but more expensive. It uses dual-band wireless – thus the 2.4 and 5 GHz we can now see. Its bandwidth is 1300 Mbps on 5 GHz and up to 450 Mbps on 2.4. This is also called Wi-Fi 5. There are a few other 802.11 standards. 802.11ad is fast but the device must be within 11 feet. 802.11ah is a lower energy but goes beyond the reaches of 802.11ac.

So now I’ve learned that I am seeing two bands because of the 802.11ac standard. The 2.4 GHz band happens to be used by other things as well. Old cordless telephones as well as garage door openers and baby monitors for instance. The 5 GHz band has fewer connections and higher speeds, however the shorter waves makes it harder to penetrate walls. You may need to use extenders for this band. If your device can use ethernet, then that will be the best connection you can have. The 5 GHz band is best used for streaming where you would experience less interference.

802.11 Standards Explained
Difference Between 2.4 GHz and 5 GHz